Numerical investigations on the static behaviour of CHS X-joints made of high strength steels

摘要：

The use of high strength steels with yield strengths up to fy=690 N/mm2 (S690) for weldedhollow section joints is hampered due to the lack of adequate provisions in design standards. The design recom-mendations of EN 1993-1-8 (2005) are based on experimental and numerical investigations using steel grades S235 or S355 and the detailed investigations are under way to verify how these recommendations affect higher strength steels. Based upon the few detailed experimental investigations available dealing with the load carrying behaviour of connections made of high strength steels (Noordhoek et al. 1998), EN1993-1-8 (2005) gives a reduction factor of α= 0.9 to the design formulae for connections made of steels with yield strengths 355 <fy ≤ 460 N/mm2. In EN1993-1-12 (2007), this reduction factor is further reduced to α= 0.8 for steels with yield strengths 460 <fy≤ 690 N/mm2. Both factors are independent of the geometry of the joints. This paper reports observations from the first numerical investigations.

作者: O.Fleischer S.Herion R.Puthli

作者单位: Karlsruhe University, Research Centre for Steel, Timber and Masonry, Karlsruhe, Germany

会议类型: 国际会议

会议名称: 第12届钢管结构国际学术会议(The 12th International Symposium on Tubular Structures)

会议地点: 上海

会议语种:英文

页码: 597-605

在线出版日期: 2008-10-08（万方平台首次上网日期，不代表论文的发表时间）