箱梁体外预应力加固效果的分析

Analysis of Externally Prestressed Reinforcement Effect of Box girder

文章通过对某座钢筋混凝土连续箱梁桥上部结构采用体外预应力加固前、后两种状态下的内力及承载力状况进行分析,着重体现体外预应力加固的显著效果,根据分析提出箱梁体外预应力加固设计、施工时需要注意的问题及相关处理措施,为同类桥梁加固设计提供借鉴经验。

With the analysis of the upper parte of some reinforced concrete continuous box girder bridge,focused on its internal force and bearing capacity,before and after reinforcing it with the application of external prestressing force,the study characterises the obvious effect of reinforcement of external prestressing.According to the result of analysis,key issues and related measures are proposed for designing the means of reinforcement applying external prestressing in continuous box girder bridge,which can be used as a reference in the similar bridges.