On the Modelling and Static Analysis of Cable-stayed Arch Bridge

Cable-stayed arch bridge is a new type of composite bridge.Taking the Xiangtan Xiangjiang 4th bridge as an example,the planar finite element models of cable-stayed arch bridge are erected,and the influence line and envelope diagram of main arch are got by ANSYS software.The worst-case of living load is obtained according to envelope diagram and living loads are laid based on bending moment influence line.At last,the effects of dead load,dead load and living load on the cable-stayed arch bridge are investigated,respectively.The analysis results indicate that mechanical property of the cable-stayed arch bridge is appropriate and the method introduced and conclusions are valuable in design,calculation and check of bridge.