耒水大桥荷载试验分析

摘要

It has been a hundred years since the development of modern bridges in China. The collapse accidents caused by the insufficient bearing capacity of bridges occur frequently,more and more old bridges and new bridges need load tests to test their bearing capacity,and give reasonable bridge evaluation to avoid irreparable damage.On the basis of old bridge reconstruction,Leishui bridge project as the background,the internal force through the finite element modeling and simulation is an-alyzed,and the control sections and static conditions are deterimined,and some tests on stress-strain and dynamic response are done,according to the analysis of the bridge load test standard Leishui bridge stiffness and bearing capacity can meet the design requirements to ensure the safety of structure.%我国近代桥梁发展至今已有百年,桥梁因承载力不足导致坍塌的事故频发,越来越多的旧桥、新桥需要荷载试验来检测它的承载能力,给出合理的桥梁评估,避免造成不可挽回的损失.依托耒水大桥工程为背景,通过有限元建模模拟分析内力,判断控制截面,确定静力工况,进行应力应变测试以及动力响应测试,根据桥梁荷载试验标准分析耒水大桥刚度与承载力是否满足设计要求,以确保结构安全.