Research on Wind Resistance Measures for Cantilever Construction of Long-Span Cable-Stayed Bridges
In the cantilever construction process of long-span cable-stayed bridge,significant lateral displacement will be generated under the action of wind load,which affects the linearity and mechanical properties of cable-stayed bridge.By arranging stay cables in the maximum cantilever state of the long-span cable-stayed bridge,its lat-eral displacement is controlled without affecting the pre-camber of the cable-stayed bridge as much as possible.In this paper,a cable-stayed bridge with cantilever construction is taken as an example,and the finite element model of the whole bridge is established by using finite element software,and the equivalent calculation of wind load and the designed cable-stayed cable are added to calculate and analyze the number of cables and the most suitable angle range.Among them,when two pairs of cable-stayed cables are arranged at angles between 20°～25° and 30°～35°,the control of lateral displacement of the cable-stayed bridge is relatively high and the adverse effect on the pre-camber of the cable-stayed bridge is low,which provides a reference for improving the wind resistance of the cable-stayed bridge in the construction stage of cantilever construction.
Cable-stayed bridgesCantilever constructionWind resistance measuresFinite element analysis
万方数据
维普
