梁式桥常见裂缝的表现形式及成因分析

摘要

It is quite common for a girder bridge to embrace the problem of cracking, which is just an external phenomenon and structural reflection of the bearing capacity of the structure and components, not the real cause of bearing capacity reduction, so the simple cracking repair cannot regain the function of bearing, instead, the real causes should be detected for the prevention and reinforcement of the girder bridge. In this paper, the manifestation modes of several common crackings are presented with causes analyzed systematically for prevention measures.%目前梁式桥普遍存在的病害问题是裂缝,开裂只是结构、构件承载力下降的一种表面征兆和构造性的反应,并非导致其承载力下降的实质性原因,故不可能通过单纯的裂缝修补来恢复其承载功能.应究其原因,对症下药,才能有效地预防裂缝的产生或者加固已有病害桥梁.该文对常见几种裂缝的表现形式,就其成因进行了系统分析,以方便为设计、施工找出控制这些裂缝的可行办法,达到防范于未然的作用.