Analysis of Stress on Cable-Beam Anchorage Zone for Cable-Stayed Bridge

doi:10.3969/j.issn.1674-0696.2012.04.04

Abstract

Abstract: By using the ANSYS，a 3-dimensional finite element model for the cable-beam anchorage zone of Fenfangwan Bridge was built to investigate the stress． The stress distribution was analysed and the bearing capacity was consequently evaluated． The following conclusions can be drawn: the stress on ear-plate is much greater than the other plates; the maximum Mises stress is located on the sides of pin hole; stress transfers fast and fluently though it is greater on some local regions; the structure could meet the requirements of bearing capacity．

Key words: cable-stayed bridge, ear-plate, cable-beam anchorage zone, stress distribution, finite element analysis

摘要： 利用ANSYS软件建立了粉房湾大桥索梁锚固区实桥模型，分析了耳板式锚固区结构的应力及应力分布情况，对承载能力进行了评价。结果表明:耳板上的Mises应力远大于顶板、腹板和底板的应力，耳板上最大Mises应力位于销孔的两侧，关于斜拉索方向对称的位置;锚固区各构件应力在局部区域数值较大，但扩散较快，应力传递流畅; 满足索梁锚固区结构承载能力要求。

关键词: 斜拉桥, 耳板式, 索梁锚固区, 应力分布, 有限元分析

CLC Number:

U443.3

Wang Shao-huai,Xiang Zhong-fu,Xie Bing-min,Zhao Jun. Analysis of Stress on Cable-Beam Anchorage Zone for Cable-Stayed Bridge[J]. Journal of Chongqing Jiaotong University(Natural Science), 2012, 31(4): 751-754.

王少怀,向中富,谢秉敏,赵军. 斜拉桥耳板式索梁锚固区应力分析[J]. 重庆交通大学学报（自然科学版）, 2012, 31(4): 751-754.

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