基于频率法的短索索力计算公式误差分析  

Error Analysis of Short Cable Force Calculation Formulas Based on Frequency Method

作　　者：刘红义[1,2] 和海芳 谢进财[2] 李亚寒 LIU Hongyi;HE Haifang;XIE Jincai;LI Yahan(Research Institute of Highway ministry of Communication,Beijing 100088,China;China-Road Transportation Verification&Inspection Hi-Tech Co.,Ltd.,Beijing 100088,China)

机构地区：[1]交通运输部公路科学研究院,北京100088 [2]中路高科交通检测检验认证有限公司,北京100088

出　　处：《铁道建筑》2019年第10期15-18,共4页Railway Engineering

基　　金：交通运输部公路科学研究所基本科研业务费项目(2015-9016)

摘　　要：短索索力测试需考虑抗弯刚度和边界条件的影响,其受力模式更接近固支受拉梁模型,目前短索索力受多种因素影响在成桥或运营测试时存在较大误差。本文讨论目前短索索力测试的一些问题,对4种实用公式结合文献数据和有限元结果进行了误差分析,研究了造成误差的主要原因,给出了短索索力计算公式使用建议。The influence of bending stiffness and boundary condition should be considered in the test of short cableforce,and its stress mode is closer to the model of fixed tension beam. At present,there are big errors when the shortcable force is affected by many factors in the test of completed bridge or operation. This paper discussed some problemsin the test of short cable force at present,and analyzed the error of four practical formulas combined with literature dataand finite element results. The main causes of the errors were studied,and the suggestions for using the calculationformula of the short cable force were given.

关 键 词：斜拉桥 索力测试 数值计算 频率法 计算公式 

分 类 号：U448.27[建筑科学—桥梁与隧道工程]