Structural Analysis Of Jinjiang Cable Stayed Bridge With Finite Element Method

Cable stayed bridges are a kind of structures that its decks are hauled up to pylons by many cables. This sort of structures system combines compressed pylon, stretched cables and bended girders. Cable-stayed bridge is now widely used. Its basic characteristics are:the light in mass, large for span, the form of beauty, and reasonable force. The cable-stayed bridge has been got the very big development all over the world since the last forty years distributing in both developed and developing countries.According to the given design information of Jinjiang Bridge, finite element model has been established to analyses forces for complete status, stability during construction process, buckling ability and seismic response the structure. When calculating the forces for complete status, dead load, live load, wind load, foundation displacement, temperature effect, and seismic load are incorporated as a single form or combination. Under the load given by code for bridge design, the stress and deflection of the main beam and the main tower were calculated in the state of ultimate bearing capacity and the state of long-term and short-term service ability and elastic performance. The counterforce of foundation was checked. Vibration characteristics were obtained by eigen-value analysis method, based on which the seismic analysis was applied by response spectrum method.