Research On A New Steel-Concrete Composite Wall's Compressive Bearing Capacity

Steel-concrete composite structure and light steel structure engineering have become more widely used at home and abroad, but the research and application in the combination of concrete and light steel structure together into practical engineering is very rare, especially the structural research on the straw concrete and green light steel skeleton of direct casting as a whole is not report as bearing component.The structural system of this subject is the light steel structural frame with casting straw outside. This structure effectively combines benefits of the light steel structure system together with the steel - concrete composite structure,including light weight, high strength, good seismic performance, convenient construction, short construction period, noise insulation performance, convenience and environmentally protecting concrete to use local materials, and solving the defects in the actual light steel structure of poor fire prevention and corrosion resistance .Through the experiment and theoretical analysis, the subject focuses on the studies in following aspects:1. Through test method for straw mix lightweight concrete research , find out the ratio of light steel structure wall to meet the needs of the material.2. Established new wall of finite element model, and ANSYS finite element software to a comparative analysis:①through comparing maximum bearing capacity of light steel structure composite wall with the light steel frame, and reinforced concrete wall, research compression capacity and deformation.②research the effect of the rate of the steel on the compression capacity of the wall in light steel structure;③research the effect of the concrete strength's changes in the composite structure on compression capacity of the wall in light steel structure;④research the effect of the thickness of steel protective layer on both sides on compression capacity of the wall in light steel structure;⑤research the effect of horizontal plate spacing's changes on compression capacity of the wall in light steel structure.3. Through combining model test in production of new wall with ANSYS finite element analysis, propose the way of calculation of the combination of light steel structure wall in the limit state.4. Through comparative analysis of the traditional steel wall system's carrying capacity, deformation and its amount of steel, draw specific conclusions.