桥面整体化层在铰接梁桥加固中的应用分析

摘要

铰接梁是我国中小跨径桥梁的一种常见结构形式,此类桥梁的横向联系是一个薄弱环节,本文分析了铰接梁铰缝破坏的原因,总结了铰接梁横向联系加固的常见方法,重点分析了桥面整体化层加固方案的特点,并以一铰接梁桥的加固为例,说明了桥面整体化层的设计与施工要点,同时结合该桥加固前后的静力荷载试验对比,验证了桥面整体化层加固方案是铰接梁桥横向联系加固的一种有效方法.%Hinged girder is a common structure form in small and medium-span bridges in our country,and its transverse linkage between beams is a weak point.In this paper,the reasons of the hinge joint failure were analyzed and the common methods of transverse linkages reinforcement of hinged beam were summarized.Besides,the features of integral layer of bridge deck were analyzed emphatically.The key points of integral layer of bridge deck's design and construction were introduced with an example of a hinged girder bridge.It was proved that the integral layer of bridge deck strengthening is an effective method to reinforce the transverse link of hinged girder bridge by comparing the static load test results of the bridge before and after the reinforcement.