Study On Seismic Performances Of Composite Structure Of Bricks Walls And Concrete Shear Walls

Total story number and total height in multistory masonry structure are strictly limited by"Code for seismic design of buildings"in seismic area. If the limit is exceeded, the only way is to produce a new masonry structure system. The problem will be preferably solved by the study and application of composite structure of masonry walls and reinforced concrete walls. Composite structure of brick walls and concrete shear walls is a new kind of structure system, in which some R.C shear walls are set. This kind of structure has many advantages than ordinary masonry structure, and its seismic performances are improved by adding R.C shears walls, so it has wide application prospect.The seismic performances and its influence factor of the composite structure of brick walls and concrete shear walls is discussed using theoretical analysis and software analysis, then the conclusion and suggests are gained, the specific contents are following as:First, in this paper, structure analysis program SAP2000 and SATWE are used to analyze seismic performances of modal and prototype of 8 stories composite structures constructed in 8 degree seismic regions, which suggests that the composite structures could satisfy the request of anti-seismic defense.Second, up to now, study on structural test and theoretical analysis was much limited on 8 stories composite structure, and the research over 8 stories was less. So 9 stories composite structure built in 8 degree seismic regions, which is simulated and analyzed under frequent earthquake by program in this paper. And conclusions are drawn that 9 stories composite structures of masonry walls and reinforced concrete walls with 3m storey height, 27m total height, built in 8 degree seismic regions is feasible.The end, there are many factors affecting seismic performances of composite structure, in which the dominating is the number of R.C shear walls. By summarizing the rules of the numerical example, a new method is gave to gain reasonable numbers of shear walls, which is valuable for study and design reference.