奉浦大桥主桥连续梁静动载试验分析

Load test and structural analysis for the continuous girder bridge of the FengPu Bridge

荷载试验是桥梁结构最有效的承载能力评定方法。以奉浦大桥五跨越江预应力混凝土变截面连续梁桥为背景,选取最不利正、负弯矩工况进行静载试验,通过挠度、应变的实测值与理论对比分析,对该连续梁目前的承载能力和刚度进行评定。并将脉动试验结果与投运前的竣工验收试验结果作对比,为同类桥型的结构性能评价积累数据资料。

Load test for bridge structure is the most effective methods for the bearing capacity evaluation.Based on the five span prestressed girder bridge of the Fengpu Brigre,the most positive and negative moment conditions are selected for the static load test.Compared the theoretical values with the measured deflections and strain values,the continuous beam current bearing capacity and stiffness are evaluated.The dynamic test results are compared with the completion and acceptance test results before operation,and some reasonable conclusions are proposed.