斜跨拱桥的受力分析及斜拉索布置方式比选

Stress Analysis of Inclined-span Arch Bridge and Comparison of Layout Forms of Stayed Cable

以太原市东中环北延上跨北涧河立交工程为例,介绍斜跨拱桥的受力分析和桥型比选。采用Midas Civil大型通用有限元分析软件建立空间有限元计算模型,对“竖琴式”“扭曲面式”和“渔网式”3种拉索体系斜跨拱桥的受力分析进行了比较,得出各种体系的特点,以及指导斜跨拱桥的受力分析和桥型选择。

Take the Taiyuan East Middle Ring North Extension Expressway Project spanning Beijian River as an example,the stress analysis and the bridge type comparison of the inclined-span arch bridge are introduced.The large-scale general finite element analysis software Midas Civil is used to establish the spatial finite element calculation model to analyze and compare the stresses of three cable systems(harp type,warped surface type and fishing net type)of inclined-span arch bridges.The characteristics of each system are obtained,which can guide the stress analysis and bridge type comparison of inclined-span arch bridge.