鱼脊梁与部分斜拉桥组合体系桥梁参数化分析

鱼脊式连续梁桥具有结构刚度大、支点负弯矩大、跨中弯矩和下挠度小等受力特点,而部分斜拉桥需要刚度较大的加劲梁,因此.可以利用鱼脊式连续梁桥和部分斜拉桥的优点来组合两种桥型。为了得岀这一组合体系的适用范围和受力特性,对一系列鱼脊式连续梁桥和部分斜拉桥的组合结构桥梁进行了参数化分析。

Parametric Analysis on Composite System Bridge of Fish Ridge Beam and Partial Cable-stayed Bridge

The fish-ridge continuous girder bridge has some mechanical characteristics of large structure stiffness,large negative bending moment at the support,and small moment and down deflections at mid-span,and moreover,the partial cable-stayed bridge needs the large stiffness of stiffening girder.Therefore,two types of bridge can be combined by the advantages of using the fish-ridge continuous girder bridge and the partial cable-stayed bridge.In order to obtain the application range and mechanical characteristic of this composite system,this paper carries out the parametric analysis on a series of composite structural bridges of fish-ridge girder bridge and partial cable-stayed bridge.