The Research On The Use Of Composite Structure In Three-dimensional Garage

With the rapid development of economy and society, the usable land in cities and the parking spaces have been become less and less. In order to alleviate parking problem in urban areas, the construction of parking equipment is a effective way. The Three-dimensional garage has the following characteristics:①the rate between height and width is phenomenal;②The dynamic load is obvious;③The lateral stiffness weak;④Wind loads is sensitive. Most of the current parking equipment adopts steel structure. The steel concrete composite structure is a new kind of structure that steel and concrete respectively play their roles and demonstrate their advantages; it is featured by the small section height and good ductility. It has been widely an employed in ordinary civil buildings in this paper. The static and dynamic characteristics of this garage will be also discussed.For stereo garage structure development history, building functional requirements, building plane and elevation layout requirements, common three-dimensional garage types, three-dimensional garage the form of structure, the research status at home and abroad were reviewed.Explore the combination structure used in three-dimensional garage structure of feasibility and specific measures. Consider using a square steel tube concrete or round steel tube concrete column as three-dimensional garage vertical stress component. The structure plane and vertical arrangement, node structure, mechanical calculation method and design theory research and puts forward some Suggestions.Combination with finite element analysis software to establish three-dimensional model of the structure of three-dimensional garage, analysis of structure in the elastic stage, the structure of the vertex displacement, the interlayer displacement, the interlayer displacement Angle, just weight ratio, shear weight ratio and displacement ratio, axial compression ratio and other parameters, and comparing with standard requirement, shows that concrete-filled steel tube column combination three-dimensional garage structure has good seismic performance indicators at elastic stage, meet the design requirements, and its efficiency is superior to the H section steel frame structure.In sap2000software, three-dimensional garage for steel pipe concrete column combination structure defines the yield hinge, elastic-plastic analysis, analyses indicate that concrete filled steel tube composite stereo garage structure has good ductility, the weak are now5layer position, the stereo garage structure seismic concept design provides some Suggestions.Stereo garage for concrete filled steel tubular structure dynamic characteristics analysis, discuss the garage parking in different working conditions, the structure of the vibration mode and frequency characteristics. Analysis shows that the increase in the number of parking, the structure of the corresponding order frequency is reduced, partial vibration is more obvious.