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{"work":{"id":92828505,"created_at":"2022-12-13T18:36:47.251-08:00","from_world_paper_id":222756943,"updated_at":"2024-11-26T04:32:21.971-08:00","_data":{"publisher":"Techno-Press","grobid_abstract":"It is common that analyses of offshore platforms being carried out with the assumption of rigid tubular joints. However, many researches have concluded that it is necessary that local joint flexibility (LJF) of tubular joints should be taken into account. Meanwhile, advanced analysis of old offshore platforms considering local joint flexibility leads to more accurate results. This paper presents an extensive finite-element (FE) based study on the flexibility of uni-planner multi-brace tubular Y-T and K-joints commonly found in offshore platforms. A wide range of geometric parameters of Y-T and K-joints in offshore practice is covered to generate reliable parametric equations for flexibility matrices. The formulas are obtained by non-linear regression analyses on the database. The proposed equations are verified against existing analytical and experimental formulations. The equations can be used reliably in global analyses of offshore structures to account for the LJF effects on overall behavior of the structure.","publication_date":"2014,,","publication_name":"Ocean Systems Engineering","grobid_abstract_attachment_id":"95733914"},"document_type":"paper","pre_hit_view_count_baseline":null,"quality":"high","language":"en","title":"Local joint flexibility equations for Y-T and K-type tubular joints","broadcastable":false,"draft":null,"has_indexable_attachment":true,"indexable":true}}["work"]; window.loswp.workCoauthors = [132281037]; window.loswp.locale = "en"; window.loswp.countryCode = "SG"; window.loswp.cwvAbTestBucket = ""; window.loswp.designVariant = "ds_vanilla"; window.loswp.fullPageMobileSutdModalVariant = "control"; window.loswp.useOptimizedScribd4genScript = false; window.loginModal = {}; window.loginModal.appleClientId = 'edu.academia.applesignon'; window.userInChina = "false";</script><script defer="" src="https://accounts.google.com/gsi/client"></script><div class="ds-loswp-container"><div class="ds-work-card--grid-container"><div class="ds-work-card--container js-loswp-work-card"><div class="ds-work-card--cover"><div class="ds-work-cover--wrapper"><div class="ds-work-cover--container"><button class="ds-work-cover--clickable js-swp-download-button" data-signup-modal="{"location":"swp-splash-paper-cover","attachmentId":95733914,"attachmentType":"pdf"}"><img alt="First page of “Local joint flexibility equations for Y-T and K-type tubular joints”" class="ds-work-cover--cover-thumbnail" src="https://0.academia-photos.com/attachment_thumbnails/95733914/mini_magick20221215-1-x0fh62.png?1671135611" /><img alt="PDF Icon" class="ds-work-cover--file-icon" src="//a.academia-assets.com/images/single_work_splash/adobe_icon.svg" /><div class="ds-work-cover--hover-container"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">download</span><p>Download Free PDF</p></div><div class="ds-work-cover--ribbon-container">Download Free PDF</div><div class="ds-work-cover--ribbon-triangle"></div></button></div></div></div><div class="ds-work-card--work-information"><h1 class="ds-work-card--work-title">Local joint flexibility equations for Y-T and K-type tubular joints</h1><div class="ds-work-card--work-authors ds-work-card--detail"><a class="ds-work-card--author js-wsj-grid-card-author ds2-5-body-md ds2-5-body-link" data-author-id="132281037" href="https://independent.academia.edu/vahidmokarram"><img alt="Profile image of vahid mokarram" class="ds-work-card--author-avatar" src="https://0.academia-photos.com/132281037/83250399/71867099/s65_vahid.mokarram.png" />vahid mokarram</a></div><div class="ds-work-card--detail"><p class="ds-work-card--detail ds2-5-body-sm">2014, Ocean Systems Engineering</p><div class="ds-work-card--work-metadata"><div class="ds-work-card--work-metadata__stat"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">visibility</span><p class="ds2-5-body-sm" id="work-metadata-view-count">…</p></div><div class="ds-work-card--work-metadata__stat"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">description</span><p class="ds2-5-body-sm">17 pages</p></div><div class="ds-work-card--work-metadata__stat"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">link</span><p class="ds2-5-body-sm">1 file</p></div></div><script>(async () => { const workId = 92828505; const worksViewsPath = "/v0/works/views?subdomain_param=api&work_ids%5B%5D=92828505"; const getWorkViews = async (workId) => { const response = await fetch(worksViewsPath); if (!response.ok) { throw new Error('Failed to load work views'); } const data = await response.json(); return data.views[workId]; }; // Get the view count for the work - we send this immediately rather than waiting for // the DOM to load, so it can be available as soon as possible (but without holding up // the backend or other resource requests, because it's a bit expensive and not critical). const viewCount = await getWorkViews(workId); const updateViewCount = (viewCount) => { try { const viewCountNumber = parseInt(viewCount, 10); if (viewCountNumber === 0) { // Remove the whole views element if there are zero views. document.getElementById('work-metadata-view-count')?.parentNode?.remove(); return; } const commaizedViewCount = viewCountNumber.toLocaleString(); const viewCountBody = document.getElementById('work-metadata-view-count'); if (!viewCountBody) { throw new Error('Failed to find work views element'); } viewCountBody.textContent = `${commaizedViewCount} views`; } catch (error) { // Remove the whole views element if there was some issue parsing. document.getElementById('work-metadata-view-count')?.parentNode?.remove(); throw new Error(`Failed to parse view count: ${viewCount}`, error); } }; // If the DOM is still loading, wait for it to be ready before updating the view count. if (document.readyState === "loading") { document.addEventListener('DOMContentLoaded', () => { updateViewCount(viewCount); }); // Otherwise, just update it immediately. } else { updateViewCount(viewCount); } })();</script></div><p class="ds-work-card--work-abstract ds-work-card--detail ds2-5-body-md">It is common that analyses of offshore platforms being carried out with the assumption of rigid tubular joints. However, many researches have concluded that it is necessary that local joint flexibility (LJF) of tubular joints should be taken into account. Meanwhile, advanced analysis of old offshore platforms considering local joint flexibility leads to more accurate results. This paper presents an extensive finite-element (FE) based study on the flexibility of uni-planner multi-brace tubular Y-T and K-joints commonly found in offshore platforms. A wide range of geometric parameters of Y-T and K-joints in offshore practice is covered to generate reliable parametric equations for flexibility matrices. The formulas are obtained by non-linear regression analyses on the database. The proposed equations are verified against existing analytical and experimental formulations. The equations can be used reliably in global analyses of offshore structures to account for the LJF effects on overall behavior of the structure.</p><div class="ds-work-card--button-container"><button class="ds2-5-button js-swp-download-button" data-signup-modal="{"location":"continue-reading-button--work-card","attachmentId":95733914,"attachmentType":"pdf","workUrl":"https://www.academia.edu/92828505/Local_joint_flexibility_equations_for_Y_T_and_K_type_tubular_joints"}">See full PDF</button><button class="ds2-5-button ds2-5-button--secondary js-swp-download-button" data-signup-modal="{"location":"download-pdf-button--work-card","attachmentId":95733914,"attachmentType":"pdf","workUrl":"https://www.academia.edu/92828505/Local_joint_flexibility_equations_for_Y_T_and_K_type_tubular_joints"}"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">download</span>Download PDF</button></div><div class="ds-signup-banner-trigger-container"><div class="ds-signup-banner-trigger ds-signup-banner-trigger-control"></div></div><div class="ds-signup-banner ds-signup-banner-control"><div id="ds-signup-banner-close-button"><button class="ds2-5-button ds2-5-button--secondary ds2-5-button--inverse"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">close</span></button></div><div class="ds-signup-banner-ctas"><img src="//a.academia-assets.com/images/academia-logo-capital-white.svg" /><h4 class="ds2-5-heading-serif-sm">Sign up for access to the world's latest research</h4><button class="ds2-5-button ds2-5-button--inverse ds2-5-button--full-width js-swp-download-button" data-signup-modal="{"location":"signup-banner"}">Sign up for free<span class="material-symbols-outlined" style="font-size: 20px" translate="no">arrow_forward</span></button></div><div class="ds-signup-banner-divider"></div><div class="ds-signup-banner-reasons"><div class="ds-signup-banner-reasons-item"><span class="material-symbols-outlined" style="font-size: 24px" translate="no">check</span><span>Get notified about relevant papers</span></div><div class="ds-signup-banner-reasons-item"><span class="material-symbols-outlined" style="font-size: 24px" translate="no">check</span><span>Save papers to use in your research</span></div><div class="ds-signup-banner-reasons-item"><span class="material-symbols-outlined" style="font-size: 24px" translate="no">check</span><span>Join the discussion with peers</span></div><div class="ds-signup-banner-reasons-item"><span class="material-symbols-outlined" style="font-size: 24px" translate="no">check</span><span>Track your impact</span></div></div></div><script>(() => { // Set up signup banner show/hide behavior: // 1. 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Response of these structures is strictly dependent upon behavior of their joints. Because of the lack of information about this part of a structure, most of the recent analysis and designs do not contain appropriate material in the case of joints. In most cases, joints are assumed to be fully clamped and their deformability is not accounted for in assessment of Jacket Type Offshore Platforms (JTOP) whereas, in reality there is always deformation in joints particularly when members undergo beyond elastic region. Approach: In this study, finite element modeling of tubular connections is carried out in order to assess their nonlinear behavior. As a result in a separate study, two FE models of a platform are made and effect of joint flexibility on these models is investigated analytically. Nonlinear static and dynamic analyses are performed considering joint deformation and compared to platform with clamped connections. Furthermore, some important parametric studies are carried out such as effect of joint flexibility on natural frequency of vibration of the structure and the process of plastic hinge formation in platform. Results: Results prove considerable effect of local joint deformation on nonlinear static and dynamic behavior of offshore structures. Conclusions/Recommendations: Taking into account the calculated results in this paper, it is highly recommended to consider the effect of joints in the design and analysis of offshore structures based on the importance of the project.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Effect of Joint Flexibility on Overall Behavior of Jacket Type Offshore Platforms","attachmentId":27047782,"attachmentType":"pdf","work_url":"https://www.academia.edu/1899799/Effect_of_Joint_Flexibility_on_Overall_Behavior_of_Jacket_Type_Offshore_Platforms","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/1899799/Effect_of_Joint_Flexibility_on_Overall_Behavior_of_Jacket_Type_Offshore_Platforms"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="1" data-entity-id="93080251" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/93080251/Local_joint_flexibility_element_for_offshore_plateforms_structures">Local joint flexibility element for offshore plateforms structures</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="1366513" href="https://amirkabir.academia.edu/mehdikia">mehdi kia</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Marine Structures, 2013</p><p class="ds-related-work--abstract ds2-5-body-sm">A large number of offshore platforms of various types have been installed in deep or shallow waters throughout the world. These structures are mainly made of tubular members which are interconnected by using tubular joints. In tubular frames, joints may exhibit considerable flexibility in both elastic and plastic range of response. The resulting flexibility may have marked effects on the overall behavior of offshore platforms. This paper investigates the effects of joint flexibility on local and global behavior of tubular framed structures in linear range of response. A new joint flexibility element is developed on the basis of flexibility matrix and implemented in a finite-element program to account for local joint flexibility effects in analytical models of tubular framed structures. The element formulation is considerably easy and straightforward in comparison with other existing tubular joint elements. It was concluded that developed flexible joint model produces accurate results comparing to sophisticated multi-axial finite element joint models.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Local joint flexibility element for offshore plateforms structures","attachmentId":95918708,"attachmentType":"pdf","work_url":"https://www.academia.edu/93080251/Local_joint_flexibility_element_for_offshore_plateforms_structures","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/93080251/Local_joint_flexibility_element_for_offshore_plateforms_structures"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="2" data-entity-id="1899800" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/1899800/Nonlinear_joint_flexibility_element_for_the_modeling_of_jacket_type_offshore_platforms">Nonlinear joint flexibility element for the modeling of jacket-type offshore platforms</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="1142368" href="https://ualberta.academia.edu/PejmanAlanjari">Pejman Alanjari</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Applied Ocean Research, 2011</p><p class="ds-related-work--abstract ds2-5-body-sm">A new nonlinear two-dimensional tubular jointelement is developed in this study on the basis of flexibility equations and the interaction between the axial force and the in-plane bending moment in the joint. Empirical equations are used to define the joint yielding in the axial direction and the in-plane rotation. An elastic–perfectly plastic yield function is adopted to include the combined effects of axial loads and bending moments on the yielding of the joint. The element formulation is straightforward, and it can readily be implemented in nonlinear finite element programs. Verification studies are carried out for the element to prove its suitability for the modeling of tubular joints of offshorejacket structures. It is concluded that the nonlinearjoint model that has been developed produces accurate results, verified against experimental data as well as against sophisticated multi-axial finite elementjoint models.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Nonlinear joint flexibility element for the modeling of jacket-type offshore platforms","attachmentId":50824552,"attachmentType":"pdf","work_url":"https://www.academia.edu/1899800/Nonlinear_joint_flexibility_element_for_the_modeling_of_jacket_type_offshore_platforms","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/1899800/Nonlinear_joint_flexibility_element_for_the_modeling_of_jacket_type_offshore_platforms"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="3" data-entity-id="5694124" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/5694124/WASET2011_Relaibility_Analysis_of_Tubular_Joints_of_Offshore_Platforms_in_Malaysia">WASET2011 - Relaibility Analysis of Tubular Joints of Offshore Platforms in Malaysia</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="8235199" href="https://cyberman.academia.edu/MassoodNazary">Massood Nazary</a></div><p class="ds-related-work--abstract ds2-5-body-sm">The oil and gas industry has moved towards Load and Resistance Factor Design through API RP2A -LRFD and the recently published international standard, ISO-19902, for design of fixed steel offshore structures. The ISO 19902 is intended to provide a harmonized design practice that offers a balanced structural fitness for the purpose, economy and safety. As part of an ongoing work, the reliability analysis of tubular joints of the jacket structure has been carried out to calibrate the load and resistance factors for the design of offshore platforms in Malaysia, as proposed in the ISO. Probabilistic models have been established for the load effects (wave, wind and current) and the tubular joints strengths. In this study the First Order Reliability Method (FORM), coded in MATLAB Software has been employed to evaluate the reliability index of the typical joints, designed using API RP2A -WSD and ISO 19902.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"WASET2011 - Relaibility Analysis of Tubular Joints of Offshore Platforms in Malaysia","attachmentId":32741587,"attachmentType":"pdf","work_url":"https://www.academia.edu/5694124/WASET2011_Relaibility_Analysis_of_Tubular_Joints_of_Offshore_Platforms_in_Malaysia","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/5694124/WASET2011_Relaibility_Analysis_of_Tubular_Joints_of_Offshore_Platforms_in_Malaysia"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="4" data-entity-id="89353382" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/89353382/Study_on_the_Analysis_of_Tubular_Joints_in_Off_Shore_Structures">Study on the Analysis of Tubular Joints in Off Shore Structures</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="196007417" href="https://bits-pilani.academia.edu/VIJAYKRUPAKERM">VIJAY KRUPAKER M</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Journal of industrial pollution control, 2017</p><p class="ds-related-work--abstract ds2-5-body-sm">Steel circular hollow sections are used extensively in offshore structures such as platform jackets. In these structures, the hollow section members are joined together by welding the profiled ends of secondary members, the braces, onto the circumference of the main member, the chord. The behaviour of these welded tubular connections, even in their simplest configuration, is complex and their analysis is difficult. With sophisticated and powerful, yet user-friendly, software widely available and computational costs rapidly falling, the use of the finite element (FE) method for the analysis of tubular joints is now commonplace in both research and practice environments. The results of such research have significantly advanced the understanding of the behaviour of tubular joints under static, fatigue and fracture loading conditions.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Study on the Analysis of Tubular Joints in Off Shore Structures","attachmentId":93167604,"attachmentType":"pdf","work_url":"https://www.academia.edu/89353382/Study_on_the_Analysis_of_Tubular_Joints_in_Off_Shore_Structures","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/89353382/Study_on_the_Analysis_of_Tubular_Joints_in_Off_Shore_Structures"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="5" data-entity-id="1197158" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/1197158/Reliability_Analysis_of_Tubular_Joints_of_Offshore_Platforms_in_Malaysia">Reliability Analysis of Tubular Joints of Offshore Platforms in Malaysia</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="1043681" href="https://utp-my.academia.edu/NelsonCossa">Nelson Cossa</a></div><p class="ds-related-work--abstract ds2-5-body-sm">The oil and gas industry has moved towards Load and Resistance Factor Design through API RP2A - LRFD and the recently published international standard, ISO-19902, for design of fixed steel offshore structures. The ISO 19902 is intended to provide a harmonized design practice that offers a balanced structural fitness for the purpose, economy and safety. As part of an ongoing work, the reliability analysis of tubular joints of the jacket structure has been carried out to calibrate the load and resistance factors for the design of offshore platforms in Malaysia, as proposed in the ISO. Probabilistic models have been established for the load effects (wave, wind and current) and the tubular joints strengths. In this study the First Order Reliability Method (FORM), coded in MATLAB Software has been employed to evaluate the reliability index of the typical joints, designed using API RP2A - WSD and ISO 19902.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Reliability Analysis of Tubular Joints of Offshore Platforms in Malaysia","attachmentId":30859490,"attachmentType":"pdf","work_url":"https://www.academia.edu/1197158/Reliability_Analysis_of_Tubular_Joints_of_Offshore_Platforms_in_Malaysia","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/1197158/Reliability_Analysis_of_Tubular_Joints_of_Offshore_Platforms_in_Malaysia"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="6" data-entity-id="64825048" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/64825048/Development_of_Partial_Environmental_Load_Factor_for_Design_of_Tubular_Joints_of_Offshore_Jacket_Platforms_in_Malaysia">Development of Partial Environmental Load Factor for Design of Tubular Joints of Offshore Jacket Platforms in Malaysia</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="1043681" href="https://utp-my.academia.edu/NelsonCossa">Nelson Cossa</a></div><p class="ds-related-work--abstract ds2-5-body-sm">The reliability analysis methods have been effectively applied to develop load and resistance factor design (LRFD) codes, such as the ISO 19902, that provide optimum structural safety taking into account the uncertainties of both the load and resistance parameters. Although, these methods have been developed since the early 1960's their application in the design of offshore structures is still not extensive. This paper presents the procedure for reliability analysis and evaluation of the environmental load factor for design of tubular joints of offshore platforms in Malaysia, for the proposed ISO. The uncertainties affecting the joints' resistance and loading were investigated and their statistical parameters presented. The reliability indices of a platform designed using both API RP2A-WSD and ISO 19902 were evaluated and compared. The partial environmental load factor of 1.29 was obtained, which provides a significant reference towards the adoption of ISO in Malaysia.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Development of Partial Environmental Load Factor for Design of Tubular Joints of Offshore Jacket Platforms in Malaysia","attachmentId":76679784,"attachmentType":"pdf","work_url":"https://www.academia.edu/64825048/Development_of_Partial_Environmental_Load_Factor_for_Design_of_Tubular_Joints_of_Offshore_Jacket_Platforms_in_Malaysia","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/64825048/Development_of_Partial_Environmental_Load_Factor_for_Design_of_Tubular_Joints_of_Offshore_Jacket_Platforms_in_Malaysia"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="7" data-entity-id="102107553" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/102107553/Stress_Distribution_Analysis_of_DKDT_Tubular_Joint_in_a_Minimum_Offshore_Structure">Stress Distribution Analysis of DKDT Tubular Joint in a Minimum Offshore Structure</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="10380044" href="https://independent.academia.edu/RudiWalujoPrastianto">Rudi Walujo Prastianto</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Rekayasa</p><p class="ds-related-work--abstract ds2-5-body-sm">A marginal field defines as an oil and/or gas field that has a short production period, low proven reservoir, and could not be exploited using existing technology. As the demand for oil and gas keeps increasing, one of the solutions to tackle the issues is to build the modified platform which came to be more minimalist to conduct the oil and gas production in the marginal field. Naturally, the minimum offshore structures are cost less but low in redundancy, therefore, pose more risks. Although the study on the minimum structures is still uncommon, there are opportunities to find innovative systems that need to have a further analysis toward such invention. Therefore, this study took the modified jacket platform as a minimum structure, and local stresses analysis by using finite element method is applied for the most critical tubular joint with multiplanarity of the joint is taking into account. The analysis was carried out using the finite element program of Salome Meca with three-d...</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Stress Distribution Analysis of DKDT Tubular Joint in a Minimum Offshore Structure","attachmentId":102459438,"attachmentType":"pdf","work_url":"https://www.academia.edu/102107553/Stress_Distribution_Analysis_of_DKDT_Tubular_Joint_in_a_Minimum_Offshore_Structure","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/102107553/Stress_Distribution_Analysis_of_DKDT_Tubular_Joint_in_a_Minimum_Offshore_Structure"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="8" data-entity-id="73036049" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/73036049/Numerical_Analysis_of_Tubular_XT_Joint_of_Jacket_Type_Offshore_Structures_under_Static_Loading">Numerical Analysis of Tubular XT Joint of Jacket Type Offshore Structures under Static Loading</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="75071185" href="https://independent.academia.edu/MehranIslam2">Mehran Islam</a><span>, </span><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="194372794" href="https://independent.academia.edu/JobayerMia">Md. Jobayer Mia</a><span>, </span><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="51310144" href="https://buet.academia.edu/AsifKabir">Asif Kabir</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Bangladesh Maritime Journal, 2022</p><p class="ds-related-work--abstract ds2-5-body-sm">Jacket structures are made of welded tubular space frames supported by a lateral bracing system. Tubular members are made up of structural steel. In an offshore structure, their primary job is to resist yield and buckling loads. They are also used to resist lateral loads. There are various types of tubular joints like T, K, KT, XT, etc. and each of the joints has significance, depending on the structure design and environment. These joints are subjected to various types of cyclic loading. As a result, fatigue failure occurs with the passing of time. In this study, the Finite Element Model of the XT-type tubular joint has been created and analysis has been done under static loading by using the STATIC STRUCTURAL analysis system of ANSYS 19.2 commercial software. The XT tubular model was analyzed under different load cases, and corresponding values for stress, strain, and deformation were tabulated. Using the maximum stress value, the yield point of the joint was also determined. The results highlighted that as the thickness of the joint increases, the values of maximum stress, strain, and deformation decrease. It was also observed that for tensile and compressive loading, the joint yielded at 30 KN of loading.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Numerical Analysis of Tubular XT Joint of Jacket Type Offshore Structures under Static Loading","attachmentId":81717872,"attachmentType":"pdf","work_url":"https://www.academia.edu/73036049/Numerical_Analysis_of_Tubular_XT_Joint_of_Jacket_Type_Offshore_Structures_under_Static_Loading","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/73036049/Numerical_Analysis_of_Tubular_XT_Joint_of_Jacket_Type_Offshore_Structures_under_Static_Loading"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="9" data-entity-id="94539227" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/94539227/A_review_of_stress_concentration_factors_in_tubular_and_non_tubular_joints_for_design_of_offshore_installations">A review of stress concentration factors in tubular and non-tubular joints for design of offshore installations</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="14771679" href="https://iitk.academia.edu/SamitRayChaudhuri">Samit Ray Chaudhuri</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Journal of Ocean Engineering and Science, 2016</p><p class="ds-related-work--abstract ds2-5-body-sm">Tubular structures are widely used in offshore installations, trusses, high rise buildings, towers for wind turbines, ski-lift installations, lightning, road pole signals etc., owing to their excellent structural performance and attractive appearance. Stress concentration, especially in the welded joints of these structures, is an important design consideration particularly for fatigue design. In the context of tubular and non-tubular joints, this paper provides a review of the experimental and numerical studies that have been carried out so far to determine the stress concentration factor (SCF). Emphasis is also placed on the complexity of capturing different types of stresses in tubular/non-tubular joints for estimation of SCF. Present code provisions for evaluation of SCF are also discussed. Further, a few issues, which require significant research effort to advance our understanding and to improve the current design guidelines, have been identified.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"A review of stress concentration factors in tubular and non-tubular joints for design of offshore installations","attachmentId":96967211,"attachmentType":"pdf","work_url":"https://www.academia.edu/94539227/A_review_of_stress_concentration_factors_in_tubular_and_non_tubular_joints_for_design_of_offshore_installations","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/94539227/A_review_of_stress_concentration_factors_in_tubular_and_non_tubular_joints_for_design_of_offshore_installations"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div></div></div><div class="ds-sticky-ctas--wrapper js-loswp-sticky-ctas hidden"><div class="ds-sticky-ctas--grid-container"><div class="ds-sticky-ctas--container"><button class="ds2-5-button js-swp-download-button" data-signup-modal="{"location":"continue-reading-button--sticky-ctas","attachmentId":95733914,"attachmentType":"pdf","workUrl":null}">See full PDF</button><button class="ds2-5-button ds2-5-button--secondary js-swp-download-button" data-signup-modal="{"location":"download-pdf-button--sticky-ctas","attachmentId":95733914,"attachmentType":"pdf","workUrl":null}"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">download</span>Download PDF</button></div></div></div><div class="ds-below-fold--grid-container"><div class="ds-work--container js-loswp-embedded-document"><div class="attachment_preview" data-attachment="Attachment_95733914" style="display: none"><div class="js-scribd-document-container"><div class="scribd--document-loading js-scribd-document-loader" style="display: block;"><img alt="Loading..." src="//a.academia-assets.com/images/loaders/paper-load.gif" /><p>Loading Preview</p></div></div><div style="text-align: center;"><div class="scribd--no-preview-alert js-preview-unavailable"><p>Sorry, preview is currently unavailable. You can download the paper by clicking the button above.</p></div></div></div></div><div class="ds-sidebar--container js-work-sidebar"><div class="ds-related-content--container"><h2 class="ds-related-content--heading">Related papers</h2><div class="ds-related-work--container js-related-work-sidebar-card" data-collection-position="0" data-entity-id="27917176" data-sort-order="default"><a class="ds-related-work--title js-related-work-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/27917176/Offshore_Platforms_Joint_Design_in_Fixed_Member_1_Assignment_No_CIVL_4170_Design_of_Offshore_Systems">Offshore Platforms Joint Design in Fixed Member/ – 1 Assignment No. CIVL 4170 – Design of Offshore Systems</a><div class="ds-related-work--metadata"><a class="js-related-work-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="52301926" href="https://independent.academia.edu/XifenHu">Xifen Hu</a></div><div class="ds-related-work--ctas"><button 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translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-related-work-sidebar-card" data-collection-position="1" data-entity-id="86159900" data-sort-order="default"><a class="ds-related-work--title js-related-work-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/86159900/Effects_of_geometrical_parameters_on_the_degree_of_bending_DoB_in_two_planar_tubular_DT_joints_of_offshore_jacket_structures_subjected_to_axial_and_bending_loads">Effects of geometrical parameters on the degree of bending (DoB) in two-planar tubular DT-joints of offshore jacket structures subjected to axial and bending loads</a><div class="ds-related-work--metadata"><a class="js-related-work-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="29790040" href="https://independent.academia.edu/MasoudNiaki">Masoud Niaki</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Marine Structures, 2019</p><div class="ds-related-work--ctas"><button 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href="https://www.academia.edu/86159900/Effects_of_geometrical_parameters_on_the_degree_of_bending_DoB_in_two_planar_tubular_DT_joints_of_offshore_jacket_structures_subjected_to_axial_and_bending_loads"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-related-work-sidebar-card" data-collection-position="2" data-entity-id="87560319" data-sort-order="default"><a class="ds-related-work--title js-related-work-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/87560319/A_Finite_Element_Technique_for_the_Ultimate_Strength_Analysis_of_Tubular_Joints">A Finite Element Technique for the Ultimate Strength Analysis of Tubular Joints</a><div class="ds-related-work--metadata"><a class="js-related-work-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="95769050" 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href="https://www.academia.edu/87560319/A_Finite_Element_Technique_for_the_Ultimate_Strength_Analysis_of_Tubular_Joints"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-related-work-sidebar-card" data-collection-position="3" data-entity-id="88816676" data-sort-order="default"><a class="ds-related-work--title js-related-work-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/88816676/Stress_Concentration_Factor_of_A_Two_Planar_Double_KT_Tubular_Joint_due_to_In_Plane_Bending_Loading_in_Steel_Offshore_Structures">Stress Concentration Factor of A Two-Planar Double KT Tubular Joint due to In-Plane Bending Loading in Steel Offshore Structures</a><div class="ds-related-work--metadata"><a class="js-related-work-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="64321458" href="https://independent.academia.edu/YoyokSetyo2">Yoyok Setyo</a></div><p class="ds-related-work--metadata ds2-5-body-xs">MATEC Web of Conferences, 2018</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Stress Concentration Factor of A Two-Planar Double KT Tubular Joint due to In-Plane Bending Loading in Steel Offshore Structures","attachmentId":92720039,"attachmentType":"pdf","work_url":"https://www.academia.edu/88816676/Stress_Concentration_Factor_of_A_Two_Planar_Double_KT_Tubular_Joint_due_to_In_Plane_Bending_Loading_in_Steel_Offshore_Structures","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-related-work-grid-card-view-pdf" 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