装配式小箱梁桥动力测试和舒适性评价

Dynamic Test & Comfort Evaluation of Fabricated Small Box Girder Bridge

通过有限元计算和动力测试,采用狄克曼(Diekemann)和斯佩林(Sperling)2种舒适性评定指标,结合模态测试和冲击系数的实测结果,分析某装配式小箱梁桥在车辆通行时桥上行人振感明显的原因。结果表明,车辆通行时桥上行人振感明显,主要原因在于结构的振动响应按评价指标在人体感觉振动的值域范围。

Through the finite element calculation & dynamic test, with the help of two comfort evaluation index of Diekemann & Sperling, and the results of modal test & impact factor, the reasons of obvious vibration of the fabricated small box girder bridge are analyzed when the vehicles are passing. The main reason of obvious vibration lies in the structure vibration response according to the evaluation index in the range of values of the human body can obviously feel.