| 南京白果桥主缆长度计算 |
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| 引用本文： | 王京杭,夏咏明,蒋湘成. 南京白果桥主缆长度计算[J]. 现代交通技术, 2009, 6(5): 31-34 |
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| 作者姓名： | 王京杭 夏咏明 蒋湘成 |
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| 作者单位： | 中铁大桥(南京)桥遂诊治有限公司,江苏南京,210000 |
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| 摘 要： | 根据自锚式悬索桥的实际受力特点,介绍了主缆长度的计算方法——分段悬链线法。该方法根据力学平衡条件和变形相容条件,采用解析表达式和数值迭代计算方法解决主缆长度计算问题,自动计入索曲线的非线性,并结合工程实例阐述该方法在主缆下料时的应用,证明该方法是可靠有效的。
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| 关 键 词： | 自锚式悬索桥 主缆线形 分段悬链线 无应力长度 下料长度 |
Calculation for the Length of Main Cable of Baiguo Bridge |
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| Wang Jinghang,Xia Yongming,Jiang Xiangcheng. Calculation for the Length of Main Cable of Baiguo Bridge[J]. Modern Transportation Technology, 2009, 6(5): 31-34 |
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| Authors: | Wang Jinghang Xia Yongming Jiang Xiangcheng |
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| Affiliation: | (China Zhongtie Major Bridge (Nanjing)Bridge and Tunnel Diagnosis ＆ Treatment Co. Ltd, Nanjing 210000, China) |
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| Abstract: | According to actual stress characteristics of the self-anchored suspension bridge, this paper mainly presents the calculation method of the length of main cable-the segmental catenary method.Based on conditions of mechanical balance and compatible deformation, the method uses analytical expression and iterative numerical calculation method, which includes in the nonlinearity of suspension curve automatically,to solve the calculation problem of the length of main cable.This paper, combined with engineering example, describes the application of the method under the blanking of main cable, and proves the reliability and validity of the method. |
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| Keywords: | self-anchored suspension bridge main cable alignment segmental catenary non-stress length blanking length |
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