| 考虑支座振动的索力动力检测理论 |
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| 引用本文： | 魏金波,段欣.考虑支座振动的索力动力检测理论[J].江西科学,2009,27(2). |
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| 作者姓名： | 魏金波 段欣 |
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| 作者单位： | 1. 同济大学土木工程学院,上海,200092
2. 南京工业大学土木工程学院,江苏,南京,210009 |
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| 摘 要： | 为了提高索力测试精度,考虑了索的支座振动对索力测量精度的影响,以等效刚度和等效质量来模拟支座处的边界条件,以柔性索为研究对象,建立了考虑支座振动柔性索的动力分析数学物理模型,导出了索在考虑支座振动情况下的位移函数.从能量法的基本原理出发,得到了柔性索的刚度矩阵和质量矩阵,讨论了索力和频率之间的关系,并分析了支座振动对索力动力检测的影响.研究结果表明:当索两端的等效刚度较小,等效质量较大时,不考虑支座振动,索力检测出的结果将明显小于实际值;考虑支座振动的索力动力检测理论可以更精确的确定索力.该模型是动力分析的实用模型.
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| 关 键 词： | 支座振动 索力 频率 能量法 |
Theoretical Study on Cable Tension Detection Considering Support Vibration |
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| WEI Jin-bo,DUAN Xin.Theoretical Study on Cable Tension Detection Considering Support Vibration[J].Jiangxi Science,2009,27(2). |
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| Authors: | WEI Jin-bo DUAN Xin |
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| Institution: | 1.Civil Engineering of Tongji University;Shanghai 200092 PRC;2.Civil Engineering of Nanjing University of Technology;Jiangsu Nanjing 210009 PRC |
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| Abstract: | The main objective of our investigation has been to obtain some knowledge of cable tension detection.The fundamental feature of this theory is as follows.Boundary conditions are simulated through equivalent stiffness and mass.The cable structure is studied to form a dynamical model considering support vibration.The displacement function is formed by the dynamical model.The energy method is used to obtain stiffness and mass matrix to discuss the relationship between cable tension and frequency considering th... |
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| Keywords: | Support vibration Cable tension Frequency Energy method |
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