桥梁时变移动车载的间接识别

针对桥梁上时变移动车载 ,提出了两种桥梁模型、四种移动车载间接识别方法和两种不同解决方案 ,并通过模型实验对上述不同桥梁移动车载解决方案进行验证。仿真和试验结果表明 :虽然各种车桥参数对识别结果都有不同程度的影响 ,但每种解决方案都能有效识别桥梁移动车载且以“时域法”和“频时域法”识别精度较高、实用性较强 ,可推荐用于现场桥梁移动车载识别。

Indirect identification of time-varying moving vehicle loads on bridges

For the time-varying moving loads on bridges, four indirect moving force identi fication methods with two solutions to two bridge models have been introduced in this paper, and then validated by model experiments in the laboratory. The simu lated and illustrative experiment results show that all the four methods are val id for identification of moving vehicle loads on the model bridges although vari ous vehicle-bridge system parameters affect the identification calculation to s ome extents. Both the time domain method (TDM) and frequency-time domain method (FTDM) methods have higher accuracy and robust applicability, they can be recom mended for identification of moving vehicle loads on bridges in the field.