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A method for calculating strand tension in the anchor span of a suspension bridge considering the rotation of a splay saddle

引用

High-Speed Railway 2023年第1期1卷 56-62页

作者： Xuejin Huo Jia Chen Dongxu Wang Li Zhu China Railway Major Bridge Reconnassance&Design Institute Co Ltd.Wuhan 430101China School of Civil Engineering Beijing Jiaotong UniversityBeijing 100044China

This paper reports a method for strand tension in anchor spans considering rotation.A kind of co-moved coordinate system,a saddle local coordinate system,was set *** system implemented the rotation of the splay saddle through the rotation of the coordinate system,and all calculations proceeded in this coordinate *** the rotation of the anchoring surface by the rotation of the local coordinate system of the anchoring surface,the anchorage point coordinates of strands were transformed to the local sadle coordinate *** was a two-layer iteration adopted in the *** the inner iteration,the cable force at the end of the vertical bend was taken as the variable,and the ordinate of the anchorage point was taken as the target *** the outer iteration,the vertical tangential angle at the end of the vertical bend was taken as the variable,and the ordinate of the anchorage point was taken as the target *** method carried out the rotation of the splay saddle and anchor surface and was simple,convenient and without *** effect of rotation was considered precisely;it showed stability during the process of two-layer iteration,powerful adaptation and higher efficiency and had been successfully applied in the construction control of the Wufengshan Yangtze River Bridge,the world's first kilometer-level combined highway and railway suspension bridge.

关键词： Suspension bridge anchor span Strand tension Rotation

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