Research of the Practical Calculation Method and Procedure of Long Self-Anchored Suspension Bridge

Abstract:

Abstract:Based on the deflection theory and the virtual displacement principle, the stress state of different components of the self-anchored suspension bridge was analyzed; the formulas denoted by trigonometric series for computing the internal force and deformation of the stiffened girder, were derived respectively under a variety of loads, and the cable force was determined under the live load combined with Newton-Simpson iteration approach. On the basis, a practical method to calculate the internal force and deformation of the stiffening girder of self-anchored suspension bridge, was presented, and also the corresponding analysis program. Then, Sanchaji Bridge across Xiangjiang River in Changsha (self-anchored suspension bridge, main span of 328m), was taken for example, the calculation results compared with finite displacement theory, proved it to be simple, convenient, accurate and reliable; if the distribution of the hangers is uniform, the results were consistent between deflection theory and finite displacement theory. This shows that, this method proposed by this paper can be used to study the influences of design parameters, having on the internal force and deformation of self-anchored suspension bridge, especially in the preliminary design stage, can be easy for the selection of the main design parameters.

• Periodical: Applied Mechanics and Materials (Volumes 178-181)
• Pages: 2333-2339
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.178-181.2333
• Online since: May 2012
• Authors: Mian Tang, Yu Cai Ning, Xia Xu, Xu Hui He
• Keywords: Principle of Virtual Displacement., Self-Anchored, Suspension Bridge

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