Research On The Construction Technique And Property Of Arch Rotating Hinge Erected By Rotating Down Vertically

The key problem in the construction of long span arch bridge is the constructive technology.The construction of arch frame is applied in the present projects. However,with the development of the Non-bracket Construction Technology,the application range of arch bridge is extended while its competitive strength is also enhanced comparing to other methods utilized in long range bridge building. As a result of own merit, the swivel technology have more and more been used in the construction of bridge. It is also getting more and more mature, has brought the very good economy and the social efficiency for our country's bridge constructionThis research is based on the Wansheng Zaodu Bridge, It has systematic research and discussion on its structure,stress,construction articles and traits about rotation hinge of the steel concrete composite arch bridge.The paper show how to set up partially finit element model during construction and deeply theoretical analysis on its mechanical behavior. A more complete calculation methods are proposed to use for the rotating hinge of arch bridge.It was proved workable though the implementation of practical project.This paper systematically researched the production and installation of rotating hinge. It provided the effective methods to control common divergence during production and installation with similar constructions for references.It deeply researched rotating axis positioning errors.It deduced a computation formula for arch rib's closure errors.With combination of structure mechanics and plane finit element models,it analysized the error's affections to mechanical propoties of the steel box arch rib.