STRENGTH AND STIFFNESS OF TUBULAR JOINTS FOR ASSESSMENT/DESIGN PURPOSES

The strengths of tubular joints predicted by the many codes which address their design often differ widely. In the assessment of existing structures, a hierarchy of analysis methods, from elastic analysis with improved code checks to nonlinear 3-D pushover analysis, may be employed. To avoid potential unnecessary and expensive offshore strengthening work, it is important that these assessments are based on best estimates of joint strength. This paper gives the background to an interim results of a major international joint industry project in this area. Based on the most extensive carefully screened database ever assembled, the robustness of present design formulations have been examined, and new formulations have been developed where present codes are found wanting. Other issues, such as chord load, can length and material yield to ultimate strength have also been addressed. For the first time, expressions have been developed for P- and M- joint stiffness response, as may be used in advanced analysis including the simulation of joint behaviour during pushover analysis. The paper goes on to describe the expected future developments in this field of technology.

  • Supplemental Notes:
    • OTC 95, 27th Annual Offshore Technology Conf; 1-4 May 1995; Houston, Tx, USA. Procs. Vol 2, p 941 [7 p, 14 ref, 1 tab, 6 fig]
  • Authors:
    • Dier, A F
    • Lalani, M
  • Publication Date: 1995

Language

  • English

Subject/Index Terms

Filing Info

  • Accession Number: 00727575
  • Record Type: Publication
  • Source Agency: British Maritime Technology
  • Files: TRIS
  • Created Date: Nov 1 1996 12:00AM