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New algorithm of shape-finding of suspension bridge with spatial cables

Theoretical & Applied Mechanics Letters 2023年第1期13卷 33-40页

作者： Xiao-Kang Deng Zhuo Deng Xin Ren School of Automobile and Traffic Engineering Wuhan University of Science and TechnologyWuhan 430081China North China Branch of China Construction Eighth Engineering Bureau Co. Ltd.Tianjin300450China

A new algorithm is proposed to solve the problems of shape-finding of suspension bridge with spatial cables what include tedious iteration,slow convergence speed and even no convergent under some *** this paper,the stress analysis of the main cable is carried out,and the relationship between the slope change and the coordinate change is *** paper also discussed how to find the minimum slope point of symmetrical or asymmetric main cable,and the deformation compatibility equation is established and solved to obtain the shape of main *** algorithm in this paper can ensure the convergence of the solution for the suspension bridge with spatial *** calculation accuracy is high through the demonstration of the calculation examples.

关键词： Spatial cables Suspenders shape-finding Slope of cable Coupling Unequal height main tower

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Calculation method on shape finding of self-anchored suspension bridge with spatial cables

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Frontiers of Structural and Civil Engineering 2009年第2期3卷 165-172页

作者： Yan HAN Zhengqing CHEN Shidong LUO Shankui YANG School of Civil Engineering and Architecture Changsha University of Science&TechnologyChangsha 410004China Wind Engineering Research Center Hunan UniversityChangsha 410082China China Railway Siyuan Survey and Design Group Co. Ltd.Wuhan 430063China China Railway Eryuan Engineering Group Co. Ltd.Chengdu 610031China

Based on the spatial model,a reliable and accurate calculation method on the shape finding of self anchored suspension bridge with spatial cables was studiedin this *** the principle that the shape of the main cables between hangers is catenary,the iteration method of calculating the shapes of the spatial main cables under the load of hanger forces was *** reasonable position of the saddle was determined according to the shape and the theoretical joint point of the main *** shapes of the main cables at completed cable stage werecalculated based on the unchanging principle of the zero-stress lengths of the main *** using a numerical method combining with the finite element method,one self-anchored suspension bridge with spatial cables was *** zero-stress length of the main cables,the position of the saddle,and the pre-offsetting of the saddle of the self-anchored suspension bridge were *** reasonable shapes of the main cables at bridge completion stage and completed cable stage were *** results show that the shape-finding calculation method is effective and reliable.

关键词： bridge engineering self-anchored suspension bridges special cables shape-finding calculation method

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