城市公路桥梁抗倾覆验算与加固改造的设计方案研究

Study on the Design Scheme of Overturning Resistance Checking Calculation and Strengthening and Reconstruction of Urban Highway Bridges

随着城市化进程的不断推进,越来越多的城市选择架设公路桥梁,随之而来的城市公路桥梁倾覆事件频发,城市公路桥梁的抗倾覆验算和加固改造逐渐成为桥梁建设领域的重要研究项目。同时,单柱桥以其良好的实用性和美观的外观成为现代交通工程中的主要作业桥梁之一。但由于该类桥梁在设计、施工、运营等方面的一些因素,以及近年来车辆超载情况的增加,桥梁倒塌事件时有发生。为防止类似事件的再次发生,本文以单柱墩桥为研究对象,对城市公路桥梁抗倾覆稳定性进行研究,并针对加强城市公路桥梁提出一系列加固方案。

With the continuous promotion of urbanization,more and more cities choose to set up highway bridges,which are followed by frequent overturning events of urban highway bridges,making the calculation of overturning resistance checking and reinforcement modification one of the important study project in the bridge construction field.Meanwhile,single-column bridges have become one of the major operation bridges in modern traffic engineering due to their good practicability and aesthetic appeal.However,due to some factors in design,construction and operation of such bridges,as well as the increase of vehicle overloading in recent years,bridge collapses occasionally occur.Hence,in order to prevent the re-occurrence of similar events,taking single column pier bridge as the study object,this article aims to investigate the overturning resistant stability of urban highway bridge,and propose a reinforcement scheme to provide the basis for the reinforcement of urban highway bridges.