高速公路桥梁多车辆荷载模型与识别仿真  

Multi-Vehicle Load Model and Identification Simulation of Highway Bridge

作　　者：罗汉勇 孟靖凯 韩春华[1] 钱熙 LUO Han-yong;MENG Jing-kai;HAN Chun-hua;QIAN Xi(School of Transportation Engineering,Kunming University of Science and Technology,Kunming Yunnan 650500,China)

机构地区：[1]昆明理工大学交通工程学院,云南昆明650500

出　　处：《计算机仿真》2022年第10期143-147,共5页Computer Simulation

基　　金：云南省应用基础研究计划面上项目(2015FB124)。

摘　　要：利用当前已有方法识别多车辆移动耦合荷载时,无法准确构建移动车辆荷载模型,导致出现识别精度低、效率低的问题。为解决上述问题,提出高速公路桥梁多车辆移动耦合荷载识别方法,利用荷载模型对移动的车辆行驶时分析路面产生的冲力,计算车辆在行驶的过程中高速公路路面和桥梁路面的不平整度,通过有限单元法推导出应力影响面,识别车轴、车重等信息进,最后采用小波变换理论和傅氏变换融合识别到的车辆信息,完成高速公路桥梁多车辆移动耦合荷载识别。仿真结果表明,所提方法在进行多车辆移动耦合荷载识别时,识别精度高,且识别效率明显提升。When identifying the moving coupled loads of multiple vehicles, the existing methods can’t accurately construct the model of moving vehicle load, resulting in low recognition accuracy and low efficiency. Therefore, this paper puts forward a method to identify the coupling load of multiple moving vehicles on highway bridges. At first, we used this model to analyze the impact force on the road surface when the vehicle was running and calculate the unevenness of highway pavement and bridge pavement. Moreover, we used the finite element method to infer the stress influence surface and identify some information about axle and vehicle weight. Finally, we used wavelet transform theory and Fourier transform to fuse the vehicle information, and thus to realize the coupled load identification. Simulation results show that the proposed method has high recognition accuracy and significantly improved recognition efficiency during the coupled load identification of multiple moving vehicles.

关 键 词：耦合荷载识别 荷载模型 有限单元法 小波变换理论 傅氏变换 

分 类 号：U441[建筑科学—桥梁与隧道工程]