Study On Key Technology For V Pier Triangle Frame Without Collar Beam Suspension Continuous Beam Combined System Bridge

With the development of productivity, bridge structures have developed in quantity, at the same time really demands on the aesthetics. At present bridges spanning capacity are gradually improved, more and more new materials are used, and structures are diversified development. Composite bridge structures which have advantages of suitability and aesthetic are widely used. Researching for this type of bridge’ design and construction key technology have great significance to popularization and application. In this paper, in terms of characteristics of v-pier rigid-frame continuous girders without tie bar suspension triangle combination bridge, studying the design and construction in order to provide reference to others.Considering the environmental characteristics of the site, two ideas are conceived including tied arch bridge and spring two combined bridge type of continuous beam bridge, and throughing the comparison, more continuous beams with elastic supports(Liang Rousuo) programme of bridge is choosed. This paper has compared the structure performance of triangle rigid frame continuous beam suspension system and the v-shaped rigid-frame system and continuous beam structure. This paper has recherched the design of main piers of the Fangshan WuDu bridge, girders, rigid frame(main tower), suspenders, the limit damping device and local structure. According to the designed structure size, this paper has studied finite element analysis of the stress, tension and the bridge’s deformation. Verify the programme based on the force of continuous beam bridge, through the settings in the main beam hangers to reduce the effect of live load on beam, reduce the load on the main beam deformation; v-piers increased measures reduce the girder body force and also reduce size and reinforcement.According to the structure characteristics of composite system of v-piers triangle frame without a tie bar suspension continuous beam bridge, founding the fine construction technology of tilt in anchor preloading type steel and mixed combination segment, implementing smooth construction of inclined steel and concrete with high strength bolt preloading combined, and through forming construction technology of the steel frame combination template to finalize the design product development and matched technology, Solving the problems during the construction of large volume v-piers. Studing the key technology of the first tower precasting, lifting, welding construction, and optimizating the flood control measures of degree of safety.