非对称独塔斜拉桥塔梁墩固结区横向分析

Transverse Analysis of Tower Beam Pier Consolidation Zone of Asymmetric Cable Stayed Bridge with Single Tower

为研究斜拉桥塔梁墩固结区横向受力情况,指导和优化设计,以某非对称独塔双索面斜拉桥工程为背景,介绍了塔梁墩固结区结构形式,建立了塔梁墩固结区横向有限元模型,分析横向框架结构在各种荷载工况下的应力情况。结果表明:塔梁墩固结区横向结构在温度、收缩徐变以及风荷载等作用下产生较大次内力,桥墩及基础的设计需综合考虑纵横向受力情况;塔梁墩固结区受力合理,可为同类工程提供借鉴参考。

In order to study the transverse stress of the tower beam pier consolidation zone of cable-stayed bridge,guide and optimize the design,the structural form of the tower beam pier consolidation zone is introduced by taking the project of an asymmetric double cable plane cable-stayed bridge with single toweras the background.The transverse finite element model of the tower beam pier consolidation zone is established,and the stress of the transverse frame structure under various load conditions is analyzed.The results show that:the transverse structure of the tower beam pier consolidation zone will produce large secondary internal force under the action of temperature,shrinkage and creep and wind load,and the design of pier and foundation should comprehensively consider the longitudinal and transverse stress;the stress of the tower beam pier consolidation zone is reasonable,which can provide reference for similar projects.