【摘要】 基于公路桥梁车桥耦合振动特性及结构动力模型试验相似理论,提出了车桥耦合振动缩尺模型试验相似关系。以某假设简支梁桥为原型,根据原型结构动力特性及相似比尺,计算了车辆与桥梁动力特性参数;对比分析了原型桥与模型桥的静、动态响应,校验所提出的车桥耦合振动缩尺模型相似律。结果表明:车桥耦合振动室内缩尺模型需同时满足弹性相似律及重力相似律。更多还原

【Abstract】 The similarity laws of bridge-vehicle interaction system were presented based on similarity theories of structure dynamic model test and dynamic property of highway bridge-vehicle coupling vibration. Taken a fictitious simple supported beam bridge as an example,the parameters of vehicle model and bridge model were calculated according to the prototype structure dynamic properties and scale factor of geometry. Comparative analysis of static and dynamic response between prototype bridge and model bridge,verified the vehicle-bridge coupling vibration model similarity law. The results showed that,the scale model test for vehicle-bridge coupling vibration need to satisfy elastic similarity law and gravity similarity simultaneously.更多还原