The analysis a wind-bracing system of suspension cable bridge according to deformed scheme
To mitigate lateral swaying of the suspension footbridge’s deck system under ambient wind, wind-bracing cables and transverse cables should be arranged in the one that has the span length more than 80 meters or having the ratio between the span length and the deck width from 35 upwards. This paper presents a method to calculate lateral displacements of the deck system and tension forces in the pre-stress wind-bracing cables for the single-span suspension bridges by establishing horizontal tension equations, which are based on the flexible string theory and the iteration algorithm. The bridge structures are analyzed by means of deformation scheme method. Lateral bending stiffness of the deck system, self-weights of the wind-bracing system, and locations of the anchored points are also considered in the calculation. A case study is performed in a comparison fashion when above parameters are changed, included, or excluded.
Keywords: wind-bracing system; wind-bracing cable; transverse cable; deck system; anchored point; horizontal tension; lateral displacements.
Copyright (c) 2018 National University of Civil Engineering
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.