小角度斜交刚架桥受力特性研究分析

Analysis on mechanical characteristics of small angle skew rigid frame bridge

刚架桥以其独特的结构特点在跨越道路时有广泛的应用。本文以新建苏沪特大桥盛泽段为工程背景,设计采用不同跨度的小角度斜交刚架桥。基于Midas建立平面梁单元模型,分析小角度斜交刚架桥的受力特性,并通过三维板单元模型对计算结果进行校核。为此类小角度斜交立交工程的设计起到参考作用。

Rigid frame bridge is widely used in crossing roads because of its unique structural characteristics.Based on the Shengze section of the newly-built Suhu super large bridge as the engineering background,,small angle skew rigid frame bridges with different spans are designed in this paper.The plane beam element model is established based on Midas,the mechanical characteristics of small angle skew rigid frame bridge are analyzed,and the calculation results are checked by three-dimensional plate element model.Therefore,it plays a reference role in the design of this kind of small angle skew interchange project.