差动变压器式测缝计在大坝变形监测中的应用分析  

Application Analysis of Differential Transformer Slot Gauge in Dam Deformation Monitoring

作　　者：蔡天德 谢东辉 纪珍珍 Cai Tiande;Xie Donghui;Ji Zhenzhen(Ningbo Reservoir Management Center,Ningbo 315000,Zhejiang;Jiaokou Reservoir Branch of Ningbo Raw Water Co.,Ltd.,Ningbo 315000,Zhejiang)

机构地区：[1]宁波市水库管理中心,浙江宁波315000 [2]宁波原水有限公司皎口水库分公司,浙江宁波315000

出　　处：《陕西水利》2022年第3期189-191,共3页Shaanxi Water Resources

基　　金：浙江省水利科技项目(RB2035)。

摘　　要：混凝土建筑物的伸缩缝是永久性的,是随荷载、环境的变化而开合的,观测方法是在测点处埋设金属标点或用测缝计进行。介绍了差动变压器式(LVDT)二向测缝计的工作原理、安装方法、在实际应用中的监测数据分析等,最后根据二向测缝计的监测成果对皎口水库大坝的稳定性进行了分析。通过应用分析,基于LVDT的二向测缝计测值稳定,精度满足混凝土重力坝的变形监测要求,为其在相似工程中的应用提供了参考依据。The expansion joints of concrete buildings are permanent and open and close with the changes of load and environment. The observation method is to bury metal punctuation points at the measuring points or use a joint gauge. The working principle, installation method and monitoring data analysis in practical application of differential transformer type(LVDT)two-way seammeter are introduced. Finally, the stability of Jiaokou Reservoir dam is analyzed according to the monitoring results of the two-way seammeter. Through application analysis, the measured value of the two-way joint measurement based on LVDT is stable, and the accuracy meets the deformation monitoring requirements of concrete gravity dam, which provides a reference for its application in similar projects.

关 键 词：伸缩缝 差动变压器 二向测缝计 变形监测 

分 类 号：TV221[水利工程—水工结构工程]