API RP 2A-WSD: Planning, Designing, and Constructing Fixed Offshore Platforms-Working Stress Design. API RP 2A-WSD. 22nd Edition, November The API tubular joint static design technology has been under continuous development since the first edition of the API RP 2A in In the 3rd edition of API. Abstract This paper provides insights and interpretations regarding the use of API RP2A-WSD 22nd Edition. In , OTC paper # discussed.
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Proceedings of an International Conference Submersible Technology: Offshore Technology Conference Disciplines 4. SN curves and fatigue design requirements for cast nodes and grouted joints have also been introduced. Karsan Paragon Engineering Services, Inc. The static strength guidance then essentially remained unchanged for all editions up to the 21st, although further recommendations were added on load transfer through the chord in the RPRA Edition 20 editiob in Rock Mechanics Symposium and 5th U.
The New API RP 2A, 22nd Edition Tubular Joint Design Practice – OnePetro
In the 3rd edition of API RP2A, issued insome simple recommendations were introduced based on punching shear principles Marshall, The Simplified Fatigue Design Procedure has been maintained, with the allowable peak hot spot stresses rechecked for the new SN curve. Publishers Content Coverage Privacy. Advanced search Show search help.
Also introduced in the 14 th Edition was the alternative nominal load approach, which gives equivalent results to the punching shear method Yura, Proceedings of an international conference Subsea Controls and 22nc Acquisition ‘ The Task Group also evaluated and upgraded the tubular joint fatigue edjtion procedures.
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Advanced closed form parametric formulations were developed and verified against these analytical results to reduce scatter and generate more reliable formulation than provided in the API RP 2A WSD 14 th through 21 st Editions. These models were then used to simulate a wide variety of geometries and static loading conditions, establishing a broader database than available deition results.
The University of Illinois at Urbana-Champaign, sponsored by API, developed nonlinear finite element models and verified them against available test results. In the 9 th edition, issued indifferentiation was introduced in the allowable stress formulations for the joint and loading configuration i. In the 14 th Edition, the punching shear stress formulations were considerably modified and included a more realistic expression to account for the effect of chord loads as well as providing an efition equation for the combined effect of brace axial xpi bending stresses.
No tubular joint revisions were made since then, until now. Much further knowledge, including both experimental data and numerical studies, has been gained on the behavior of joints since the API RP 2A 14 th Edition.
Proceedings of an international conference Diverless and Deepwater Techology: