行驶车辆引起复杂场地及结构振动的试验研究  

EXPERIMENTAL STUDY ON VEHICLE-INDUCED VIBRATION OF COMPLICATED GROUND AND BUILDINGS

作　　者：申永刚[1] 项贻强 

机构地区：[1]浙江大学土木工程学系,杭州310027

出　　处：《振动与冲击》2008年第5期89-94,共6页Journal of Vibration and Shock

摘　　要：对行驶车辆引起复杂场地及结构振动的实际工程进行了现场测试,将跑车试验实测数据与数值模型计算结果进行对比分析,验证了车辆-场地耦合振动理论的正确性。隔振前后用跳车试验比较了隔振沟对场地及结构的隔振效果。结果发现,行驶车辆所引起的场地振动响应随着车辆行驶速度的增大而增大,随着测点与振源的距离增大而减小;地形增高会对振动响应产生放大效应;合适深度的隔振沟能够减轻道路表面波的振动,有效阻隔中高频率波的传播,从而减轻结构振动。The vibrations of ground and neareby buildings indcuced by running vihcile are studied by means of onsite experiments on a complicated ground near a highway road. The theory of vehicle-ground coupled vibration is verified by comparing numerical calculation results with those of vehcile-running experiments. The results show that the vibration levels of ground and building increase with vehcile speed, but decrease with the distance between the measuring point and the vibration source. For muti-layer ground, the higher layer vibrates more strongly than lower ones. An isolation ditch with a suitbale depth performs well for suppressing vehicle-induced vibration of the road surface, and effectively keeping the waves with higher frequencies from propagating. Consequently, the building vibration is reduced.

关 键 词：行驶车辆 复杂场地 结构振动 跑车试验 跳车试验 隔振沟 数值计算 

分 类 号：TB533.2[理学—物理] TU435[理学—声学]