考虑刚度及边界条件的索力精确求解  

PRECISE SOLUTION OF CABLE TENSILE FORCE IN CONSIDERATION OF CABLE STIFFNESS AND ITS BOUNDARY CONDITIONS

作　　者：刘文峰[1] 应怀樵 柳春图[1] 

机构地区：[1]中国科学院力学研究所,北京100080 [2]东方振动和噪声技术研究所,北京100085

出　　处：《振动与冲击》2003年第4期12-14,25,共4页Journal of Vibration and Shock

摘　　要：目前索力的测试大多不考虑结构刚度的影响 ,这导致测试的结果偏大。本文中不仅考虑了索的刚度 ,而且将索的边界条件假定为简支以及简支和固支耦合两种情况 ,得到不同假设下的理论公式 ,分析了不同方法下索力的区别 ,并利用实测的数据进行分析 ,给出了未考虑刚度情况下和仅考虑为简支时的误差 ,证明在索力测试中 。In most of methods for cable tension measurement and calculation the cable stiffness' influence is usually not taken into cosideration.It makes the results bigger than the true ones.In the paper the stiffness and boundary conditions of the cable are introduced in the cable tension analysis.The equations under two different conditions,namely simply supported and clamped are established.The results of tests are compared and the errors between different conditions are deduced.The conclusion points out that in cable test,especially in short cable test,the influences of cable stiffness and boundary conditions should not be ignored.

关 键 词：刚度 索力测试 固有频率 传感器 振动法 斜拉桥 

分 类 号：U448.27[建筑科学—桥梁与隧道工程]