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- W2377084307 abstract "The nonlinear aerostatic stability of a 420m-main-span suspension pedestrian bridge was analysed numerically. Based on aerostatic coefficients of the main girder measured in wind tunnel tests,nonlinear influences caused by the structure and aerostatic load were analysed by using incremental double iteration method. The results conclude as follows: the structure deformation varying with wind speed shows obvious nonlinearity,and the aerostatic instability mode is of the characteristic of space deformation of bending-twisting coupling mode; comparing with the highway bridge,the torsional stiffness of the bridge due to main cables accounts for a greater proportion of the stiffness of the long-span suspension pedestrian bridge. The critical wind velocity and the reason of aerostatic instability can be got by tracing the stress in the main cable with the variation of wind speed; nonzero initial wind attack angle can reduce the critical wind speed; central buckles and anti-wind cables can raise the critical wind speed. The aerostatic instability mode after the installation of central buckles is the bending-twisting coupling mode of main girder,and the aerostatic instability mode after adding the measure of anti-wind cables is the local structural buckling due to the wind cables and hangers stress relaxation. The results are beneficial to the further research of long span narrow bridge aerostatic stability." @default.
- W2377084307 created "2016-06-24" @default.
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- W2377084307 date "2014-01-01" @default.
- W2377084307 modified "2023-09-23" @default.
- W2377084307 title "Nonlinear aerostatic stability analysis of a long-span suspension pedestrian bridge" @default.
- W2377084307 hasPublicationYear "2014" @default.
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