T梁桥拓宽拼接对横向分布的影响

Transverse Distribution Influence of Widening Splicing on T-shaped Beam Bridge

随着公路桥梁交通流量的逐年增长,我国境内相当部分旧公路桥梁的早期设计荷载等级已不能满足实际的使用要求,桥梁拓宽改造设计显得十分必要及紧迫。本文借某T梁桥拓宽改造之际,采用有限元分析软件计算分析,探讨了两种不同拓宽方式下原桥荷载横向分布的变化情况并得结论,对类似桥梁拓宽改造设计具有一定的实际指导意义。

With the development of traffic flow, the design load of part of the old highway bridges can not meet the actual application requirements. In this ease, the widening design of those bridges is quite necessary and urgent. Calculating and analyzing with the finite element analysis software on a T - shaped beam bridge is performed in this paper, and how the transverse distribution of original bridge load changes under two different ways of widening design is stud- ied and a conclusion is made, which definitely has a practical guiding significance for the widening design of similar bridges.