Mechanical Performance Study Of Steel And Concrete Composite Arch Structure

Steel and concrete composite arch structure is developed on the basis of the composite structure, and and steel and concrete composite structure is developed on the basis of the steel structure and concrete structure, therefore, it has both the characteristics of steel and concrete composite structure and the characteristics of the arch structure. This kind of composite structure can not only give full play to the performance of materials but also can have beautiful shape, large span arch structure and force uniform, etc. Now the research and application of steel and concrete composite structure has been very mature, but it is fews for the combination of arch structure research. So in this paper, we carry on the preliminary theoretical research of the stress of the arch structure of steel and concrete combination performance. The completed main work and achievements include:According to the characteristics of the arch structure, their mechanical properties were analyzed. established the section internal force calculation formula of hingeless arch and two hinged arch under Uniformly distributed load, symmetric arbitrary concentrated load and concentrated load.Analysied the axial force, interface shearing stress and deformation of the hingeless arch and the two hinged arch structure by the elastic analysis method and energy method, established the calculation formula of the axial force and interface shearing stress and deformation of composite structures under uniformly distributed load and symmetrical concentrated load and arbitrary concentrated load.Gived the effect curve of the axial force,the interfacial shear stress and the deformation under influence of the size of uniformly distributed load, the connection stiffness and the thickness of concrete slab by matlab software, by these it can see the reflects the influence law and the degree of influence of each influence factor for calculation clearly. Provided important reference and basis for the steel and concrete composite arch structure’s research and design.