基于WIM实测数据的车辆荷载效应极值的预测分析  

Prediction of the extreme value of vehicle loading effects based on WIM data

作　　者：袁伟璋 黄海云[1] 张俊平[1,2] 尹兴[1] 刘泽戈 

机构地区：[1]广州大学土木工程学院,广州510006 [2]广东省交通职业技术学院,广州510170

出　　处：《中国科技论文》2016年第7期839-842,共4页China Sciencepaper

基　　金：国家自然科学基金资助项目(51278134);高等学校博士学科点专项科研基金资助项目(20114410110003);广东省交通运输厅科技资助项目(201402022)

摘　　要：为了研究车辆荷载的发展变异对桥梁结构的影响,基于渝湛高速公路27万多个货车的动态称重系统(WIM)实测数据,通过蒙特卡罗法生成随机车流,将其加载于虚拟简支梁结构模拟车辆荷载效应,采用阈值模型(peaks over threshold model,POT模型)预测结构未来可能出现的车辆荷载效应极值,并与实测数据进行对比验证。结果表明:上述方法能够较为合理地预测车辆荷载效应极值,而按JTG D60—2015公路桥涵设计通用规范会得出偏小的结果。In order to study the effects of development and variation of vehicle loading on bridge structure,random vehicle flow was generated by Monte Carlo method and the virtual simply supported beam was loaded to simulate the vehicle loading effect according to more than two hundred and seventy thousand weight in motion data of YuZhan highway.POT model was used to predict the maximum vehicle loading effects and they were compared with the measured data.The results showed that this method can reasonably predict the extreme value of vehicle loading effect and the result might be smaller by JTG D60-2015 General Specifications for Highway Bridges and Culverts design codes.

关 键 词：车辆荷载效应 动态称重系统 随机车流 蒙特卡罗法 阈值模型 

分 类 号：U441.2[建筑科学—桥梁与隧道工程]