测缝计拉伸装置的设计及应用  

Design and application of stretching device of joint meter

作　　者：朱学练 蔡来良[1] 朱学慧 杨望山[1] ZHU Xuelian;CAI Lailiang;ZHU Xuehui;YANG Wangshan(School of Surveying and Land Information Engineering, Henan Polytechnic University, Jiaozuo 454450, China;Gezhouba Group testing Co. Ltd, Yichang 443002, China;Housing and Urban Construction Bureau of Wufeng Tujia Autonomous County, Yichang 443413, China)

机构地区：[1]河南理工大学测绘与国土信息工程学院,河南焦作454000 [2]葛洲坝集团试验检测有限公司,湖北宜昌443002 [3]五峰土家族自治县住房和城乡建设局,湖北宜昌443413

出　　处：《人民长江》2018年第2期69-73,共5页Yangtze River

基　　金：河南省科技攻关项目(162102210226);河南省高等学校重点科研计划项目(15A420005);河南理工大学博士基金项目(B2012-004)

摘　　要：差动电阻式测缝计和振弦式测缝计安装时都需要预拉,用手或其他工具直接操作难以把握好力度,容易损毁仪器,且预拉值难以稳定。为此,设计了一款便携的测缝计拉伸装置,在测缝计安装时对其进行预拉,使测缝计在大坝及其附属结构横缝、纵缝和诱导缝等部位安装时更安全、更便捷。将手动拉伸过程转化为机械拉伸过程,避免了测缝计在预拉时力度难以把握、拉坏仪器等情况的发生。实例应用表明,该拉伸装置不仅优化了预拉过程,而且改进了测缝计安装方法、缩短了安装时间、提高了安装质量,可供类似工程监测仪器改造借鉴。The installation of differential resistance joint meter and vibrating wire joint meter need to be pre - stretched before installation. If stretching it by hands or other tools directly, the strength is difficult to grasp and the instrument is easily to be damaged, meanwhile, the measured values are not stable enough. Therefore, a portable stretching device was designed to solve this problem. Pre - stretching before the installation of joint meter makes it safer and more convenient to install the joint meter at transverse joint, longitudinal joint and induced joint of the dam and affiliated structures. By the new device, the manual stretc- hing process is switched into mechanical stretching process, so as to avoid irrational stretching strength and damaging of instrument. Engineering application indicate that this device not only optimizes the pre - stretching process, but also improves the installation of the joint meter, which shortens the installation time and improves the installation quality.

关 键 词：测缝计 预拉 拉伸装置 开合度 

分 类 号：TV698[水利工程—水利水电工程]