LATERAL BUCKLING LOAD OF TIED-ARCH BRIDGE WITH TRANSVERSE BRACES IN RAILWAY PASSENGER TRANSPORT LINE

摘要：

The practical calculation formula for lateral buckling load of tied-arch bridge with transverse braces in railway passenger transport line is proposed using the Ritz approximation method. The trial displacement functions are postulated to satisfy the boundary conditions in lateral flexural torsion buckling conditions. The energy formulations for the main arch frame lateral flexural and torsion internal energy,the transverse brace flexural energy and main arch frame local deformation internal energy,external loading potential and the hanger follower force potential are determined using the trial displacement functions. The critical lateral buckling load for the tied-arch bridge is deduced based on the minimal potential principle. As a case for study,the lateral buckling load for a tied-arch bridge in a railway passenger transport line is investigated using the proposed calculation method. The comparison is made between the practical method and buckling analysis using the finite element. The result shows that the proposed calculation method is easy to manipulate and can predict the critical lateral buckling load for the tied-arch bridge.

关键词： Lateral buckling load Tied-arch bridge Arch bridge in passenger railway line Minimal potential principle Three dimensional finite element analysis

作者: Tai-Quan Zhou Yuan Hua

作者单位: Key Laboratory of Bridge-Structure Engineering of Ministry of Communications,Chongqing Jiaotong Univ Key Laboratory of Bridge-Structure Engineering of Ministry of Communications,Chongqing Jiaotong Univ

会议类型: 国际会议

会议名称: The Eleventh International Symposium on Structural Engineering(第十一届结构工程国际研讨会)

会议地点: 广州

会议语种:英文

页码: 1478-1482

在线出版日期: 2010-12-01（万方平台首次上网日期，不代表论文的发表时间）