加宽后新旧桥梁整体性能评估的荷载试验分析

摘要

对于拓宽后新旧梁体的整体性能评估方法，重点采用了基于接缝板曲率的评价法和利用横向分布系数的评价法，针对某桥梁进行了现场试验，通过结构分析，确定静载试验方案，利用现场加载试验测试桥梁的挠度和应变，并对试验数据进行处理，得出接缝板的曲率以及各个主梁的横向分布系数，通过数据对比和分析，对桥梁结构特别是新旧主梁的联接性能做出总体评价，旨在为桥梁的安全评估和维修养护提供技术支持，同时也为同类桥梁结构的整体性能评估提供参考。%As to the evaluation methods on the whole performance of the broadened existing bridge,it are mainly adopt that assessment method based on the joint plate’s curvature and the transverse distribution coefficient. And then the examinations are carried out on a bridge. The load test is put to effect by analysis of structures. Through the load test,the deflection and the strain of this bridge are get. Then calculating the joint plate’s curvature and the transverse distribution coefficient,comparing and analyzing the test data,it is evaluated that the whole performance state of this bridge. This article could provide reference for operation administration and maintenance of similar bridge.