移动荷载作用下桥梁结构响应测试技术  

Technique of measuring structural responses of bridges induced by moving loads

作　　者：张军[1] 梁川 朱鹏程 贺方倩[1] 方周妮 ZHANG Jun;LIANG Chuan;ZHU Pengcheng;HE Fangqiang;FANG Zhouni(School of Intelligent Construction,Wuxi Taihu University,Wuxi 214064,Jiangsu,China;No.63983 Unit of PLA,Wuxi 214035,Jiangsu,China)

机构地区：[1]无锡太湖学院智能建造学院,江苏无锡214064 [2]63983部队,江苏无锡214035

出　　处：《工程建设》2022年第12期66-71,共6页Engineering Construction

基　　金：国家自然科学基金资助项目(50379026)。

摘　　要：随着桥梁结构计算分析越来越向精确化方向发展,桥梁结构承载力评估日益受到重视。本文运用试验的方法来获取移动荷载位置与桥梁结构响应一一对应关系曲线,并在现有结构动态响应测试设备的基础上增加激光测距传感器,通过信号转换将移动荷载位置参数作为一种位移信号通过动态响应测试仪器同步采集,获取移动荷载位置与桥梁结构响应的时域数据,根据反函数的原理,利用软件二次开发来建立实测的移动荷载位置与桥梁结构响应一一对应关系曲线。试验结果表明:该项技术可以准确地以试验的方法来获取移动荷载位置与桥梁结构响应一一对应关系曲线,并可广泛应用于各类桥梁的检测中。With more and more precise calculation and research on bridges, the assessment of bridges’ carrying capacity is gaining universal attention.In this paper, the one-to-one correspondence relationship curves between structural responses and location of moving loads on bridges are acquired using experiment method. The parameter of moving load position is looked on as another type of displacement after signal conversion, and a laser rangefinder is added to the original test instruments, by which time domain data of the moving load position can be synchronously collected together with other response signals. Then the correlation curves are plotted well with the second exploiting programming of the testing software based on the inverse function principle.The testing results indicate that the present technology can accurately gain the present congruent relationship curves, which can be widely used in detection on a variety of bridge.

关 键 词：移动荷载位置 结构响应 对应关系 反函数 桥梁测试 

分 类 号：U441[建筑科学—桥梁与隧道工程] U446.1[交通运输工程—道路与铁道工程]