工程桥梁多方向振动的测量与模态分析  

Measurement and Modal Analysis of the Vibration of a Bridge in Multiple Directions

作　　者：邓锐强[1] 黄小清[1] 刘逸平[1] 梁德中 

机构地区：[1]华南理工大学交通学院,广东广州510640 [2]广州市公路局,广东广州510080

出　　处：《华南理工大学学报（自然科学版）》2003年第z1期52-55,共4页Journal of South China University of Technology(Natural Science Edition)

基　　金：广东省自然科学基金资助项目(000482)

摘　　要：通过预先埋置在桥面铺装层内的压电式加速度传感器对桥梁振动进行多方向的测量,并对桥梁进行有限元模态分析。在测量中考察了匀速行驶和刹车两种车栽的影响,测得了20 m跨的预应力空心梁桥在不同载荷下的竖向和水平横向振动。综合试验测量和有限元分析结果,得到了这类桥梁运动车载作用下的非常规振动特性。By piezoelectric acceleration sensors which have been embedded in the bridge deck pavement, the multiple directional vibrations of a bridge have been measured, and the vibration modes are analyzed of the bridge with FEM. The effects of vehicle with constant speeds and stop instantly are studied; the vertical and horizontal transverse accelerations of sections of a prestressed hollow beam bridge are measured. The results of measurement and FEM analysis show that the bridge may be incited irregular vibration by running vehicles.

关 键 词：桥梁振动测量 传感器 埋入式 压电式 模态分析 

分 类 号：U446.1[建筑科学—桥梁与隧道工程] TB523[交通运输工程—道路与铁道工程]