作　　者： ; ; ; ; ;

机构地区： 重庆大学光电工程学院光电技术及系统教育部重点实验室

出　　处： 《现代科学仪器》 2007年第3期38-41,共4页

摘　　要： 针对大型索桥索力在线监测问题,介绍基于磁弹效应的索力在线测试方法,阐述它的测量原理,分析其磁路结构、磁化强度和温度对测量结果的影响,搭建相应的实验系统,实验确定最佳磁化强度和温度影响曲线,最后进行拉力模拟实验,实验表明,该索力测试方法是可行的,测量的重复性精度优于0.2%。 Aimed at the in situ detection for the cable tension of the large band cable bridges, a new in situ measurement method of cable tension based on magneto - elastic effect is introduced, its measurement principle is described, the structure of magnetic circuit is analyzed, the effect of the magnetic intensity and temperature on measurement is studied, the experiment system is designed. Confirmed the magnetic intensity and the temperature effect curve is optimized by experiment, finally, the experiment of pulling tension is carried on, the experiment resuits indicated that this method is feasible, it＇s repetition is better than 0.2%.

关 键 词： 索桥 索力 磁弹效应 磁导率

领　　域： [建筑科学] [交通运输工程]