腹板开裂预制T梁的承载力评定

Bearing Capacity Evaluation of Prefabricated T Girder with Web Cracking

以某桥一片预制T梁腹板开裂工程实例为背景,介绍了采用单梁静载试验对开裂T梁承载力进行评定的方法。通过测试单梁在等效静力荷载作用下的应力、变形数据,并与有限元计算的应力、变形理论值进行比较,评定T梁的实际承载力是否满足设计要求。

Based on an engineering example of the web cracking of prefabricated T girder of a bridge,the method of evaluating the bearing capacity of cracked T girder by single girder static load test was presented. The stress and deformation of single girder under equivalent static load were tested,and compared with the theoretical value of stress and deformation calculated by finite element method,it was evaluated whether the actual bearing capacity of T girder met the design requirement.