| 斜拉索索力测量方法的比较分析 |
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| 引用本文： | 孙江波,赵红华,赵作周. 斜拉索索力测量方法的比较分析[J]. 工业建筑, 2011, 0(Z1): 402-405 |
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| 作者姓名： | 孙江波 赵红华 赵作周 |
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| 作者单位： | 北京林业大学土木工程系;清华大学土木工程系; |
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| 摘 要： | 介绍常用的斜拉索索力的几种测量方法,着重介绍频率振动法的原理与影响因素。同时,结合某实际案例,介绍用有限元分析软件分析给定索力时斜拉索不同计算模型对索计算频率的影响,并与不同解析方法的计算结果对比分析,认为长索采用张拉弦模型计算结果比较精确;短索采用铰支梁模型时计算前5阶频率时可以不考虑索抗弯刚度的影响,运用固支梁模型计算的低阶频率与实测值比较接近。
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| 关 键 词： | 斜拉桥 索力测量 频率振动法 铰支梁 张紧弦 有限元 |
COMPARATIVE ANALYSIS OF MEASURING METHODS OF CABLE TENSION FORCES IN CABLE-STAYED BRIDGES |
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| Sun Jiangbo, Zhao Honghua Zhao Zuozhou. COMPARATIVE ANALYSIS OF MEASURING METHODS OF CABLE TENSION FORCES IN CABLE-STAYED BRIDGES[J]. Industrial Construction, 2011, 0(Z1): 402-405 |
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| Authors: | Sun Jiangbo Zhao Honghua Zhao Zuozhou |
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| Affiliation: | Sun Jiangbo1,2 Zhao Honghua1 Zhao Zuozhou2(1.Department of Civil Engineering,Beijing Forestry University,Beijing 100083,China,2.Department of Civil Engineering,Tsinghua University,Beijing 100084,China) |
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| Abstract: | This paper presents several methods usually used for measuring cable tension forces in cable-stayed bridges,especially frequency vibration method.Taken two different length stay-cables under given tension forces in a real cable-stayed bridge for example,different modeling methods in finite element methods(FEM) were used to solve their natural vibration frequencies.The FEM predicted results were compared with those from other available theoretical predicting methods.It was found that FEM based on tightening ... |
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| Keywords: | cable-stayed bridge tension force measurement frequency vibration method hinged beam tightening string finite element method |
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