LOAD-CARRYING CAPACITY OF THE HIGH-STRENGTH STEEL THIN-WALLED BOX-SECTION BEAM

摘要：

A four-point flexural test was carded out to study the ultimate load-carrying capacity of the thin-walled box-section beams fabricated by high strength steel with the nominal yield stress of 745MPa to 800MPa. Then a finite element analysis with the shell element was employed to simulate the test results. The initial overall imperfection, the local imperfection of the component and the mechanical imperfection were incorporated into the analysis. The numerical values are generally in good agreement with the experimental values. Numbers of parameter analysis were carded out to investigate the ultimate load-carrying capacity of the high strength steel thin-walled box-section beam subjected pure bending moment. The values obtained indicate that the width-thickness ratio of the flange and the section side ratio are main factors that can affect its ultimate load-carrying capacity,and the slenderness ratio has little effect on the load-carrying capacity of the high strength steel thin-walled box-section beam.

关键词： High strength steel Thin-walled Box-section beam Finite element method Load-carrying capacity

作者: Lei Gao Hong-Cai Sun Ke-Bin Jiang Guan-Yao Xu

作者单位: Engineering Institute of Engineer Corps, PLA Univ. of Sci. & Tech., Nanjing 210007, P.R. China

会议类型: 国际会议

会议名称: 第十届国际结构工程青年学者研讨会(The Tenth International Symposium on Structural Engineering for Young Experts)

会议地点: 长沙

会议语种:英文

页码: 877-882

在线出版日期: 2008-10-19（万方平台首次上网日期，不代表论文的发表时间）