Continuous Steel Box Girder Pier Top Spin Technology Research

Bridge swivel construction along with new material research progress construction stepped design light research unceasingly thorough, the construction craft is mature day after day.Experienced the flat turn, the vertical stroke has transferred, development phases and so on even vertical stroke union, was suitable in the mountainous area, the plain different terrain, the different environment.Has widely been suitable in the box arches, double arched, the trussed arch, just the arching, slanting leg bridges and so on steel construction, diagonal cable bridge, continual bridge.Has the construction speed quickly, saves the construction timber wood, the reduction construction equipment, does not interrupt the transportation, does not affect is open to navigation and so on the characteristics, has the remarkable economic efficiency and the social efficiency.The structure computation theory, the design technology progress and the computer technology in the project domain widespread application, promoted the swivel construction craft development and the innovation.On Shijiazhuang and the level road viaduct the cross Jing-Guang Railroad designs is64.22m+64.232m continual steel box Liang, as a result of the traffic safety and the field condition limit, set a higher request to the construction technology.In order to guarantee the railroad traffic safety and the construction plan smooth implementation, this article went against the swivel construction technology on the pillar to conduct the system research.First, through and surmounts the railroad to this bridge unique feature the geography condition analysis, proved the pillar to go against the swivel craft the feasibility, has determined the swivel construction plan.Second, to the continual steel box Liang swivel construction establishment finite element model, determined vertically and horizontally to the balanced reshuffle plan, solved curve continual steel box Liang vertically and horizontally not to approach the balance force moment problem.Meanwhile to the swivel dynamic system, the ancillary facilities has carried on the computation analysis and the design. Third, has conducted the research to the central turntable and the bearing of bridge, and aimed at this project characteristic to design the central turntable and the permanent support gathers a form,has provided the new experience for the similar project.Forth, the enhancement construction process control, the formulation examination and the king post called the heavy plan, and has carried on the analysis to the examination result.Shijiazhuang and the level road continual steel box Liang swivel construction success implementation, has provided the new mentality for the bridge swivel craft, will have the important guiding sense to the next similar bridge construction.