| 基于频率法对系杆拱桥吊杆索力测试的分析 |
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| 引用本文： | 毛亚娜,刘世忠,叶丹.基于频率法对系杆拱桥吊杆索力测试的分析[J].兰州铁道学院学报,2010,29(1):124-128. |
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| 作者姓名： | 毛亚娜 刘世忠 叶丹 |
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| 作者单位： | 兰州交通大学甘肃省道路桥梁与地下工程重点实验室;中铁工程设计咨询集团有限公司; |
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| 基金项目： | 国家自然科学基金(50968008) |
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| 摘 要： | 根据系杆拱桥吊杆的振动特性,建立了考虑吊杆弯曲刚度影响的振动微分方程,基于弦振动理论,得出了频率法测试吊杆索力的实用计算公式.研究了单侧安装阻尼器对吊杆振动模态的影响,进而提出了消除阻尼器对索力测试精度影响的计算方法.将此方法应用于某钢管混凝土拱桥的施工监控中,对比分析了各阶段吊杆索力的测试结果与千斤顶标定测量值,结果表明:上述分析方法能够满足实际工程的需要,可广泛应用于频率法测估各种系杆拱结构的吊杆索力.
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| 关 键 词： | 索力测试 频率法 阻尼器 系杆拱桥 千斤顶测量法 |
Analysis of Determining Suspender Tension of Tied-arch Bridges Based on Frequency Method |
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| MAO Ya-na,LIU Shi-zhong,YE Dan.Analysis of Determining Suspender Tension of Tied-arch Bridges Based on Frequency Method[J].Journal of Lanzhou Railway University,2010,29(1):124-128. |
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| Authors: | MAO Ya-na LIU Shi-zhong YE Dan |
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| Institution: | 1.Key Laboratory of Road Bridge and Underground Engineering in Gansu Province/a>;Lanzhou Jiaotong University/a>;Lanzhou 730070/a>;China/a>;2.China Railway Engineering Consultants Group/a>;Beijing 100055/a>;China |
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| Abstract: | According to the vibrating characteristics of tied-arch bridge,the differential equation3] with considering the bending rigidity of the suspender as well as the calculating formula using frequency method for tension test was established.Based on the theory of chord vibration,the influence of single-side damping to the vibration of suspender was analyzed,consequently.The influence of damping to tension test was eliminated by modifying the calculating length of the suspender.The above method was used in the ... |
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| Keywords: | tension testing frequency method damping tied-arch bridge jack method |
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