Study on Main Cable-Shaped of Long-Span Suspension Bridge

Abstract:

The main cable is made of PPWS. Its large displacement and nonlinear mechanical properties are shown by their own elastic deformation and its geometry changes affecting the system balance. To get the real main cable-shaped of long-span suspension bridge, based on the finite element method, the element stiffness matrix was derived, which displacement field was same to the element shape. Then through the horizontal and vertical direction equilibrium equations were solved, the relationship between main cable shape and the system parameters was obtained. The calculation method was compiled to MATLAB 7.0 programs, and applied to ascertain the main cable-shaped of one long-span suspension bridge. When the paper calculated result was contrasted with the design value, it could be concluded that: the main cable-shaped of long-span suspension bridge could be accurately obtained by the paper method, and the method was convenient for compiling.

• Periodical: Advanced Materials Research (Volumes 160-162)
• Pages: 939-944
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.160-162.939
• Online since: November 2010
• Authors: Lu Rong Cai, Rong Hui Wang, Kong Liang Chen, Chang Hai Liu
• Keywords: Able Force, Exact Finite Element, High Strength Steel Wire, Main Cable

References

[1] Steinmain D B. A practical Treatise on Suspension Bridge, 2nd ED., Wiley, (1928).

[2] Timoshenko S. The stiffness of suspension bridges, Tans. ASCE, Vol. 94, (1930).

[3] Fukuda T. analysis of multispan suspension bridges, ASCE, Vol. 93, No. ST3, (1967).

[4] Brotton D.M. A general computer program for the solution of suspension bridge problems, Structural Engineering, Vol. 44, (1966).

[5] Saffan S.A. Theoretical Analysis of Suspension Bridges, Proc. ASCE, 1966, 92(ST4). p.1. 14.

[6] Tang Jianmin, Zhao Yin. A Eulerian Geometrically Non-Linear Finite Element Method With Two-Node Cable Element for the Ananlysis of Cable Structures [J]. Shanhai Journal of Mechamics, 1999, 10(1): 89-94. (In Chinese).

[7] Jinamin T, Zuyan S. A nonlinear finite element method with five-node cuvred element for analysis of cable structures. Proceedings of IASS Intemational Symposium, 1995, 2: 929-935. (In Chinese).

[8] YANG Yan-ping. Derivation of Spline Element function of Cable Structure [J]. Journal of Kunming University of Science and Technology, 2000, 25(2): 72-74. (In Chinese).

[9] YUAN Si, CHENG Daye, YE Kangsheng. Exact Element Method for Form Finding Analysis of Cable Structures [J]. Journal of Building Structures, 2005, 26(2): 46-51. (In Chinese).