[1] Li Jianhui, Li Aiqun, Yuan Huihui, Li Xiping, et al. Spatial structural analysis of main saddle for single towerspatial cable self-anchored suspension bridge [J]. Journal of Southeast University (English Edition), 2009, 25 (3): 372-375. [doi:10.3969/j.issn.1003-7985.2009.03.018]

Copy

Spatial structural analysis of main saddle for single towerspatial cable self-anchored suspension bridge()

独柱塔空间缆索自锚式悬索桥主鞍座空间受力分析

Share：

Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

25

Issue:

2009 3

Page:

372-375

Research Field:

Traffic and Transportation Engineering

Publishing date:

2009-09-30

Info

Title:

Spatial structural analysis of main saddle for single towerspatial cable self-anchored suspension bridge

独柱塔空间缆索自锚式悬索桥主鞍座空间受力分析

Author(s):

Li Jianhui¹, Li Aiqun¹, Yuan Huihui¹, Li Xiping²

¹School of Civil Engineering, Southeast University, Nanjing 210096, China
²The Fourth Survey and Design Institute of China Railways, Wuhan 430063, China

李建慧¹, 李爱群¹, 袁辉辉¹, 李喜平²

¹东南大学土木工程学院, 南京 210096; ²铁道第四勘察设计院, 武汉 430063

Keywords:

self-anchored suspension bridge;  finite element;  main saddle;  spatial cable;  structural design

自锚式悬索桥;  有限元;  主鞍座;  空间缆索;  结构设计

PACS:

U448.25;U443.38

DOI:

10.3969/j.issn.1003-7985.2009.03.018

Abstract:

Based on the engineering background of the Jiangxinzhou Bridge in Nanjing, issues related to the spatial main saddle of the self-anchored suspension bridge are studied.The refinement finite element model is established by the secondary development technology based on the platform of the general finite element program, and a reasonable load pattern is used in its spatial structural analysis, by which its path of force transference and stress distribution are obtained. Matched with the spatial main cable, the tangency point correction method is also discussed.The results show that the lateral wall stress of the saddle groove is higher than the stress within the wall due to the role of lateral forces in the finished bridge state;the horizontal volume force of the main cable can generate a gradient distributed vertical extrusion pressure on the saddle clamping device and the main saddle body;the geometric nonlinear effect of the self-anchored suspension bridge cable system in the construction process is significant, which can be reflected in the spatial tangent point position of the main cable with the main saddle changes a lot from free cable to finished cable.

以南京江心洲大桥为工程背景, 对空间缆索自锚式悬索桥主鞍座的相关问题进行研究.以大型通用有限元程序为平台, 采用二次开发技术, 建立精细化有限元模型, 在此基础上采用合理的加载模式对其进行空间受力分析, 并阐述与空间主鞍座相匹配的主缆切点简化修正方法.结果表明:空间主缆在成桥状态对主鞍座横向力的作用会造成鞍槽外侧壁应力大于内侧壁的应力;主缆横向体积力会对主鞍座压紧装置和鞍体产生梯度分布的竖向挤压力;自锚式悬索桥体系转换过程中缆索的几何非线性效应显著, 体现在空缆到成桥状态主缆与主鞍座空间切点位置会有较大的变化.

References:

[1] Hu Jianhua, Chen Guanxiong, Xiang Jianjun, et al.Design considerations and innovative techniques of Pingsheng Bridge [J].Bridge Construction, 2006(2):28-31.(in Chinese)
[2] Shao Xudong, Deng Jun, Li Lifeng, et al.Cable anchorage structure of self-anchored suspension bridge [J].China Civil Engineering Journal, 2006, 39(7):81-87.(in Chinese)
[3] Qiu Wengliang, Zhang Zhe.Study on nonlinear error adjustment of self-anchored suspension bridge in construction [J].Journal of Highway and Transportation Research and Development, 2005, 22(6):72-74.(in Chinese)
[4] Kim C Y, Lee M J, Chang S P.Nonlinear shape-finding analysisof a self-anchored suspension bridge [J].Eng Struct, 2002, 4(12):1547-1559.
[5] Zhou Yongtao, Li Yiqiang, Tu Jingping, et al.Main cable design and computing of Tianjin Fumin Haihe Bridge [J].Highway, 2006, 12(12):1-4.(in Chinese)
[6] Li Chuanxi, Wang Lei, Liu Guangdong, et al.Separate calculation method on suspension bridge saddle’s position [J].China Journal of Highway and Transport, 2005, 18(1):63-69.(in Chinese)
[7] Luo Xiheng, Xiao Rucheng, Xiang Haifan.Cable shape analysis of suspension bridge with spatial cables [J].Journal of Tongji University:Natural Science Edition, 2004, 32(10):1349-1354.(in Chinese)

Memo

Memo:

Biographies: Li Jianhui(1976—), male, graduate;Li Aiqun(corresponding author), male, doctor, professor, aiqunli@sina.com.cn.
Foundation items: The National High Technology Research and Development Program of China(863 Program)(No.2006AA04Z416), the National Science Fund for Distinguished Young Scholars(No.50725828).
Citation: Li Jianhui, Li Aiqun, Yuan Huihui, et al.Spatial structural analysis of main saddle for single tower spatial cable self-anchored suspension bridge[J].Journal of Southeast University(English Edition), 2009, 25(3):372-375.

Common functions