单箱连续刚构静载试验分析方法对比研究

The Comparative Study on the Analytical Method of Static Load Test of Single-box Continuous Rigid Frame

针对目前箱型截面横向腹板空间受力分析不够精确这一问题,采用大型有限元分析软件Midas Civil对实际工程以单梁法、修正的单梁模型法与梁格法3种方式进行计算分析,试验结果显示:梁格法与修正的单梁模型法计算结果相差不大,单梁法无法模拟腹板空间受力不平均的问题,可为后续的连续刚构桥静载试验工程提供参考。

Regarding the inaccuracy of spatial stress analysis of box section transverse web,this paper conducted computational analysis on the actual projects by ways of single girder method,modified single girder model method and beam grid method using Midas Civil.The results revealed that there was little difference between beam grid method and modified single girder model method,but the single girder method was unable to simulate the uneven spatial stress of web,which could provide reference for the static load test of subsequent continuous rigid frame bridges.