| 拉索的悬链线解答在斜拉桥调索中的应用 |
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| 引用本文： | 魏建东,刘忠玉.拉索的悬链线解答在斜拉桥调索中的应用[J].公路交通科技,2005,22(12):78-80,97. |
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| 作者姓名： | 魏建东 刘忠玉 |
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| 作者单位： | 1. 西南交通大学土木学院,四川,成都,610031
2. 郑州大学土木学院,河南,郑州,450002 |
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| 摘 要： | 基于作者建立的无弹性悬链线解答,推导了拉索的无应力索原长计算公式,以及索原长与索力之间的增量关系式。算例表明,本文建立的索原长计算式是正确的;索原长与索力之间的增量关系式可应用于大跨度斜拉桥的调索计算,与常用的Ernst弹性模量修正法具有相近的精度。算例还表明,在进行调索计算时,割线模量法具有很高的精度,且公式简单,建议优先采用。
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| 关 键 词： | 拉索 斜拉索 悬链线 斜拉桥 调索 |
| 文章编号： | 1002-0268（2005）12-0078-03 |
| 收稿时间： | 2004-09-23 |
| 修稿时间： | 2004-09-23 |
Cable Tension Adjustment in Cable-Stayed Bridge by Using Catenary Solution |
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| WEI Jian-dong,LIU Zhong-yu.Cable Tension Adjustment in Cable-Stayed Bridge by Using Catenary Solution[J].Journal of Highway and Transportation Research and Development,2005,22(12):78-80,97. |
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| Authors: | WEI Jian-dong LIU Zhong-yu |
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| Institution: | 1. College of Civil Eng., Southwest Jiaotong University, Sichuan Chengdu 610031, China; 2. College of Civil Eng., Zhengzhou University, Henan Zhengzhou 450002, China |
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| Abstract: | Based on the catenary solutions without considering cable's elasticity developed by the authors,the formulas to calculate the unstrained length of cable,and the differential relation between the unstrained length and the cable tension were drived.Examples indicated that the formula to calculate the unstrained length is correct,the differential relation between the unstrained length and cable tension can be used for cable tension adjustment in large-span cable-stayed bridges,and has precision close to the method using Ernst's modified modulus.It is indicated that the method using secant modulus is better in precision,and is proposed to be used in the engineering. |
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| Keywords: | Cable Stay-cable Catenary Cable-stayed bridge Cable tension adjustment |
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