Bearing Stress Analysis And Auxiliary Pier Optimized Design Of Chongqing Fuling Wujiang River Cable-stayed Briedge

While bearing the cost of bridge construction in the proportion of small, but its importance is self-evident.Bearing including fixed bearing, one-way bearing activities and two-way bearing activities, the bearing of Chongqing Fuling Wujiang Cable-stayed Bridge composed with auxiliary pier bearing, transition pier bearing and main pier bearing. Reaction force of bearing is determined by constant load, live load and the additional factors such as temperature. Cable-stayed bridge into a state with a reasonable set of optimal cable tension so that the beam, the tower have best force, correspondingly, a bridge joint reaction force equilibrium state of the main beam weight, taking into account the maximum reaction force reaction force line under the most adverse impact on automobile live loads obtained, plus bearing temperature, sedimentation and other factors pier most adverse conditions change in the value of the reaction force, according to standard values to determine the combined effects of the reaction force of the design value, taking into account the longitudinal displacement, the lateral displacement of carriage, which is designed for bearing. I will analysis of bearing force and assisted by Pier influence the performance of cable-stayed bridge. This paper will background with Chongqing Fuling Wujiang River Cable-stayed Bridge, the main contents are as follows:1) This paper identifies a reasonable state of Chongqing Fuling Wujiang Cable-stayed Bridge by-step algorithm, research into the bearing bracket reasonable force under the bridge state and live loads, integrated temperature, sedimentation and other additional factors bearing reaction force changes in accordance with the standards to determine the value of the combined effects of the reaction force of the design value, bearing reference for future selection.2) Describes the temperature effect theory, using finite element analysis software Midas\Civil calculate the temperature effect(system temperature, cable beam temperature, cable tower temperature, temperature of gradient, temperature of bearing installation and temperature of closure) of Bearing force and vertical displacement effects of Chongqing Fu Feng Shi Wujiang River Cable-stayed Bridge, analysis the influence of Wujiang River Bridge tension and compression forces Bearing the most unfavorable combination of temperature loads, and impact of the auxiliary pier, transition pier Bearing force of temperature load size sort, for bracket installation and closure temperatures made recommendations3) Analysis the concrete density, cable force error, live load, dead load, pier settlement and other factors on the pier of Wujiang River Cable-stayed Bridge Bearing tension and compression force of the influence, and the pressure of heavy beams to optimize the design to ensure the holder is subject to reasonable force status, for Bearing force and the longitudinal displacement of the girder at the support to find out which laws and make recommendations;4) Discussion the cable-stayed bridge’s influence of girder’s stress, girder’s vertical deformation, sarasota moment and cable stress by auxiliary pier, research the reasonable amount of auxiliary pier, by comparing the different scenarios analyzed the optimal position of the auxiliary pier, draw relevant conclusions, provide a reference for future’s auxiliary pier design and analysis of cable-stayed bridge.