| PC矮塔斜拉桥索力测试方法研究 |
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| 引用本文： | 王东森,张运波,刘津南.PC矮塔斜拉桥索力测试方法研究[J].国防交通工程与技术,2012(1):19-21,4. |
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| 作者姓名： | 王东森 张运波 刘津南 |
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| 作者单位： | [1]石家庄铁道大学土木工程学院,河北石家庄050043 [2]北京铁路局石家庄职工培训基地,河北石家庄050000 |
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| 摘 要： | 依据曹妃甸一号路跨纳潮河大桥矮塔斜拉桥整个施工过程的索力测试工作,提出了采用振动频率法结合压力传感器标定的斜拉索索力测试方案。为保证测试索力值的可靠性,对斜拉索线密度和自由长度等参数进行修正。通过对施工过程中实测索力值与设计理论值进行对比分析,证明该方法具有简单可行、操作方便的特点,可以为该类型桥梁的索力测试工作提供参考。
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| 关 键 词： | PC矮塔斜拉桥 索力测试 振动频率法 斜拉索 线密度 自由长度 |
A Study of the Test Methods for Cable Forces of PC-Extrados Cable-Stayed Bridges |
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| Wang Dongsen,Zhang Yunbo,Liu Jinnan.A Study of the Test Methods for Cable Forces of PC-Extrados Cable-Stayed Bridges[J].Traffic Engineering and Technology for National Defence,2012(1):19-21,4. |
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| Authors: | Wang Dongsen Zhang Yunbo Liu Jinnan |
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| Institution: | 1.College of Civil Engineering of the Shijiazhuang Tiedao University,Shijiazhuang 050043,China;2.The Workers＇ Training Base of the Beijing Railway Bureau,Shijiazhuang 050000,China) |
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| Abstract: | With the cable tension test during the whole construction of the Kuanachaohe PC-extrados cable-stayed bridge of Road 1 in Caofeidian as a practical example,a test scheme for testing the strength of cables combining the vibration-frequency method with the test method of cable forces demarcated with pressure sensors is put forward in the paper.To ensure the reliability of the results of the force test of the cables,the parameters such as the string density of the cables,the free length,etc.are modified.Through the comparison between the measured values with those of the theoretical design,it is proved that this method is simple,practical and easy in operation,which provides a useful reference for the cable force test of this type of bridges. |
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| Keywords: | PC-extrados cable-stayed bridge force test for cables vibration-frequency method cable density of the cables free length |
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