小桥梁的车辆荷载监测方法研究与应用  

Research and Application of Vehicle Load Monitoring Method for Medium and Small Bridges

作　　者：欧阳歆泓 徐剑 徐一超 Ouyang Xin-hong;Xu Jian;Xu Yi-chao

机构地区：[1]在役长大桥梁安全与健康国家重点实验室,南京211112 [2]苏交科集团股份有限公司,南京211112

出　　处：《建筑技术开发》2020年第18期123-124,共2页Building Technology Development

基　　金：国家重点研发计划“公共安全风险防控与应急技术装备”重点专项2017年度项目(2017YFC0806000)。

摘　　要：车辆荷载数据是桥梁监测的重要指标之一,对桥梁结构实际所受荷载进行分析,可使桥梁健康监测更加直接、可靠。借助无线监测系统获取桥梁结构的动态响应,基于影响线方法并利用光纤传感器来反演结构上部荷载,对桥梁上部移动荷载进行识别。该方法有助于建立正常运营状态下桥梁的荷载模型,推动桥梁结构健康监测系统的发展。同时,可为桥梁设计检算阶段和后期管理养护阶段提供数据支持,有助于相关部门根据实际需进行合理有效的交通调控。介绍了桥梁称重系统的主要优势及存在的问题,并对基于影响线及分布传感的桥梁车辆荷载识别方法进行了分析。Vehicle load data is one of the important indicators of bridge monitoring.The analysis of the actual load on the bridge structure can make the bridge health monitoring more direct and reliable.With the help of wireless monitoring system,the dynamic response of bridge structure is obtained.Based on the influence line method and the optical fiber sensor,the upper load of the structure is inverted to identify the moving load of the upper part of the bridge.This method is helpful to establish the load model of the bridge under normal operation and promote the development of the bridge structure health monitoring system.At the same time,it can provide data support for the bridge design checking stage and the later management and maintenance stage,and help the relevant departments to carry out reasonable and effective traffic control according to the actual needs.This paper introduces the main advantages and existing problems of bridge weighing system,and analyzes the bridge vehicle load identification method based on influence line and distributed sensor.

关 键 词：中小桥梁 车辆荷载监测 影响线 移动荷载识别 

分 类 号：TU71[建筑科学—建筑技术科学] U441[建筑科学—桥梁与隧道工程]