平行钢绞线索频率法索力测试研究  

Research on Frequency Method Cable Force Test for Parallel Steel Strand Cable

作　　者：朱祎鹏 周广耀 鲍芸斐 杨正林 ZHU Yipeng;ZHOU Guangyao;BAO Yunfei;YANG Zhenglin(College of Civil Engineering&Architecture,China Three Gorges University,Yichang 443002,Hubei,China)

机构地区：[1]三峡大学土木与建筑学院,湖北宜昌443002

出　　处：《工程技术研究》2023年第19期111-113,共3页Engineering and Technological Research

摘　　要：平行钢绞线斜拉索索力不均匀,且外包HDPE套管,各钢绞线之间、套管与钢绞线之间在垂度作用下中间部分相互接触,在频率法索力测试过程中具有一定的影响。文章通过建立有限元模型,对比索力与频率的对应关系得出,平行钢绞的索力不均匀性对频率法测试影响不大,HDPE套管能有效地传递和反映其内部索体的振动,因此,可根据套管质量修正斜拉索的线密度,显著提高斜拉索索力测试和计算的精确度。The cable force of the parallel steel strand cable is not uniform,and it is wrapped with HDPE casing.The middle parts of each steel strand and between the casing and the steel strand are in contact with each other under the action of sag,which has a certain influence in the process of frequency method cable force test.By establishing the finite element model and comparing the corresponding relationship between cable force and frequency,it is concluded that the non-uniformity of cable force of parallel steel strands has little influence on the frequency method test.HDPE casing can effectively transmit and reflect the vibration of its internal cable body.Therefore,the linear density of stayed cables can be modified according to the quality of casing,and the accuracy of stayed cable force test and calculation can be significantly improved.

关 键 词：平行钢绞线索 频率法 线密度修正 

分 类 号：U446[建筑科学—桥梁与隧道工程]