作者：杜毅1, 李贵平1, 黎洪2
作者单位：1. 贵州大学土木建筑工程学院, 贵州贵阳 550003;
2. 贵州省计量测试院, 贵州贵阳 550001
关键词：高强漆包线; 应变; 温度变化; 桥梁荷载试验
摘要：
桥梁荷载试验现场测试环境的变化,对测量结果影响较大,在试验模拟室外温度变化对现场应变结果测量影响研究的基础上,提出采用高强漆包线替代传统的胶质电线、屏蔽电缆应用到桥梁荷载试验中,并进行了多个工程实例,通过大量实测的数据说明高强漆包线替代传统的胶质电线、屏蔽电缆应用到桥梁荷载试验中是可行的,测试效果是明显的。高强漆包线作为电阻应变测试系统中桥臂导线比胶质导线(电线)稳定,高强漆包线不仅可以在桥梁结构应变测量中应用,也可以应用到机械制造、土木工程等领域,可通过应变测试对力、压力、扭矩、位移、温度等物理量进行测量。具有一定的推广使用价值。
Application of compressed enameled wire on bridge load testing experiment
DU Yi1, LI Gui-ping1, LI Hong2
1. Civil Engineering & Architecture School of Guizhou University, Guiyang 550003, China;
2. Guizhou Institute of Metrology and Testing, Guiyang 550001, China
Abstract: The measurement results of the bridge load testing experiment were heavily influenced by the field environment. Based on the field test results of strain which were affected by simulated outside temperature, it was proposed that the compressed enameled wire could replace the traditional rubberized wire and shielded cable in bridge load testing experiments. This was supported by abundant data collected from the in-situ measurements and the results of these measurements were positive. As bridge-arm lead in the electrical resistance strain testing system, the compressed enameled wire was more stable than the rubberized wire. Also, the compressed enameled wire could be applied to the fields of machinery, civil engineering and so on, not to say its application of strain measurements in bridge structural. And according to the results of strain, other physical data such as force, pressure, torque, displacement and temperature can be acquired. All the above indicates that the compressed enameled wire is worthy of widespread applications.
Keywords: Compressed enameled wire; Strain; Temperature change; Bridge load testing experiment
2008, 34(2): 112-115 收稿日期: 2007-10-6;收到修改稿日期: 2007-12-19
基金项目:
作者简介: 杜毅(1965-),女,山东青岛市人,副教授,主要从事结构材料及建筑构件物安全性能的检测研究。
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