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以一座三跨单箱单室预应力混凝土连续箱梁桥为对象,利用车辆-桥梁耦合振动关系建立单梁车辆、桥梁运动微分方程,通过二者变形协调、相互作用力协调关系实现车辆-桥梁的耦合关系;修正了自编的桥梁动力响应计算程序,通过建立在桥梁上的高速弯板称重系统实现对实际过桥交通荷载的识别,并将识别出的实际车辆荷载信息输入已建立的桥梁动力响应计算程序,快速计算出在实际车辆荷载作用下的桥梁动力响应,并利用ANSYS软件进行静力验证,用实际过桥车流产生的动应变进行动力验证。
Taking a three - span single box prestressed concrete continuous box girder bridge as an example, this paper establishes a differential motion equation of single - beam vehicle and bridge using the coupling vibration between vehicle and bridge. By means of the coordinated deformation and interaction of the two, the vehicle - bridge The correction of the self-compiled bridge dynamic response calculation program, through the bridge built on the high-speed bending plate weighing system to achieve the actual bridge traffic load identification, and identify the actual vehicle load information has been established Bridge dynamic response calculation program to quickly calculate the dynamic response of the bridge under the actual vehicle load and verify the static force with ANSYS software and verify the dynamic strain with the actual cross-car flow.