STABILITY RESEARCH FOR CFST TIED ARCH BRIDGE UNDER TRANSVERSE WIND LOAD

摘要：

Based on a concrete filled steel tubular (CFST) tied arch bridge project, the instability caused by transverse wind load in bridge completion state is analyzed. The unified theory of CFST is applied to analysis the dual nonlinear stability of the bridge. Various factors, including arch rib initial imperfection, geometry and material nonlinearity related to stability analysis, are fully considered. The results show that the transverse wind load with high critical wind speed can cause aerostatic lateral buckling. The relatively small lateral buckling displacement reveals that geometry nonlinearity influence is trivial. Material nonlinearity is the main factor which affects the ultimate bearing capacity.

关键词： CFST tied arch bridge FEM model transverse wind load stability analysis

作者: Fan Xing Bing Zhu Cong-Lin Li

作者单位: School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, P.R. China Sichuan Province Gongxian County Traffic Bureau, Gongxian 644501, P.R. China

会议类型: 国际会议

会议名称: 2009年土木工程结构创新与可持续发展国际会议(The International Symposium on Innovation & Sustainability of Structures in Civil Engineering)

会议地点: 广州

会议语种:英文

页码: 1549-1553

在线出版日期: 2009-11-28（万方平台首次上网日期，不代表论文的发表时间）