ANALYSIS OF LIVE LOAD NONLINEAR EFFECT OF COMPOSITE GIRDER CABLE-STAYED BRIDGE WITH THREE TOWERS

摘要：

　　Taking Erqi Yangtze River Bridge as an engineering example,the spatial nonlinear finite element model named double-girder is established.The geometrically nonlinear behavior of whole bridge is analyzed under dead load plus live load in normal service stage.The nonlinear analysis involves cable sag,large displacement and beam-column.The three nonlinear factors effect on internal force of side tower and main girder are investigated.The results show that the effect of geometric nonlinearity is small.The nonlinear effect on bending moments is about 3.3%,and is 1.8% for axial force.The maximum vertical deflection is 1.001 m and is increased by 3.0% compared to linear value.The double-girder nonlinear model,which have less element numbers and conveniently calculate,can apply to the nonlinear analysis of composite girder cable-stayed bridge with three towers.

关键词： Cable-stayed bridge with three towers geometrically nonlinear analysis cable sag large displacement beam-column

作者: Feng Wang

作者单位: College of Civil Engineering & Architecture, China Three Gorges University,Yichang, Hubei,443002, P.R.China

会议类型: 国际会议

会议名称: The Twelfth International Symposium on Structural Engineering (第十二届结构工程国际研讨会)

会议地点: 武汉

会议语种:英文

页码: 1321-1326

在线出版日期: 2012-11-17（万方平台首次上网日期，不代表论文的发表时间）