The Research On Bearing Capacity And Deformation Properties Of Composite Structure

Light steel-concrete composite slab started relatively late in China, developing slowly. It is a cold-formed steel and steel tubes and concrete form a new structural system that combines the advantages of light steel and concrete structures, not only high strength, stiffness, light weight, stability and good seismic performance. The fire performance has also been improved, the construction of fast, convenient environmentally friendly features to meet the requirements of the country’s sustainable development.In order to better promote the application of light steel concrete composite structures in the future building, The subject use new straw concrete steel composite structure system as a research direction, on the bearing capacity and deformation behavior of theoretical and experimental analysis, clear failure mechanism obtained experimental conclusions, the perfect combination of straw concrete light steel structure theory system research.The main contents are as follows:First, the use of finite element software to analyze the overall performance of the system of straw concrete composite structures under static loads analysis, structural system with different steel spacing, different thickness of protective layer of concrete, different types and different section size, to study its mechanical properties and resistance to lateral displacement performance, and structural system carrying capacity, deformation and economic performance were analyzed. Secondly, the time history analysis method of composite structure system under earthquake action performance and characteristics, and different structural system with part time displacement response for comparative analysis. Finally, in contrast to straw concrete composite structure system of finite element and theoretical calculation of stress analysis results of system components, working mechanism, analysis of the impact of the performance of structure is the main factor, to promote the combination of stricture development and future application in actual engineering to make theoretical basis.In this paper, through a series of calculation and analysis of composite structure system, the value of different forms of research and exploration, for straw concrete composite structure to develop and improve the system to make a certain guiding significance and reference value.