基于移动荷载试验的桥梁快速测试与评定方法

文章提出一种基于移动荷载试验的桥梁快速测试与评定方法，并成功应用于一座实际运营的大跨径变截面连续梁桥。首先简单介绍基于移动车辆激励下桥梁动力响应的桥梁柔度矩阵识别方法；其次提出基于柔度矩阵的桥梁挠度校验系数计算的方法和流程，实现对桥梁状况的评定；最后通过数值算例和实桥试验验证所提出的桥梁评定方法的有效性和高效性。

This paper proposes a rapid testing and evaluation method based on moving load test for bridges, and applies it to a long-span continuous girder bridge with variable cross section successfully. Firstly, the bridge flexibility matrix identification method based on the moving vehicle induced dynamic response is briefly introduced. Then, the approach and procedure for calculating the deflection verification coefficient based on flexibility matrix are proposed to evaluate bridge conditions. Finally, the effectiveness and efficiency of the proposed bridge evaluation method are verified by numerical example and field test.