Operation Stage And Earthquake Analysis Based On Beam Element And Detail Stress Calculation Of Saddle For Low-Pylon Cable-Stayed Bridge

The thesis focuses on studying the mechanics behavior of long-span low-pylon cable-stayed bridge with building up an integrated finite element model based on Shawan Bridge which is proposed to build. The structure behaviors under loads of completed bridge stage are computed and especially analyzed the effects of dead loads, vehicle live loads, temperature changes, wind loads and their combinations. The thesis also analyzes the time-dependent effect on the performance of structure in the later operation stage. Seismic characteristics of structure are studied by the response spectrum analysis and time history analysis in the thesis. At last, the defined three-dimension finite element model of the long-span low-pylon cable-stayed bridge is used to calculate the complicated stress under the most disadvantageous load case of the cable force and some discussions are given. Therefore, the static and dynamic performance and analyzing method of the long-span low-pylon cable-stayed bridge are comprehensively understood.