Study On Optimization Analysis Of High-rise Shear Wall Structure Based On Seismic Action

With the rapid development of China’s economy, the real estate industry is developing rapidly, as the real estate industry’s most popular products, high-rise shear wall structure has also high-speed development at the same time. The shear wall structure has the obvious advantage in residence. It can make the house not leak beam and column, contracted bright, as large space, and can be a very good sound insulation, and also make full use of land resources to build tall buildings. Because of there are much of high-rise shear wall structure to build, and the investment is large. So, it is necessary to optimize the design of structure, and use the optimal structure design to save material and reduce cost to improve the economic benefit.In this paper, to use the high-rise shear wall structure as research object, in accordance with relevant code, use the finite element analysis software ANSYS to build finite element model in considering the influence of the holes by rooms of stair, elevator and floor. Work on modal analysis and seismic response spectrum analysis of the structural model. To research optimization analysis of structure by putting the thickness of wall of shear wall structure as design variable, the deformation control of structure as state variables (constraints), and the lightest weight of structure as objective function. To optimize beam cross section based on the optimization of the thickness of wall, and then use PKPM to design and analysis by the outcome data of optimized. And to give practical optimization design at last.Here are main conclusions:1. Find out the optimal solution of the thickness of wall by optimization analysis. To optimize beam cross section based on the optimization of the thickness of wall, and then use PKPM to design and analysis by the outcome data of optimized. The results show that this optimization method is feasible.2. The earthquake is mainly concentrated in the first few vibration modes. But in some situation, such as the rare earthquake, higher modes also should be paid attention to. It sometimes should aim at some local components such as cantilever beam to send strong reaction. Therefore, we should strengthen the earthquake resistance measures for local components.3. Through seismic response spectrum analysis we can find that:The largest lateral deformation or displacement occurred on the top of the structure under X-seismic response spectrum. Maximum inter-story drift angle occurred in the vertical middle parts of structure. The Stress of bottom and interior of structure is larger. At the corner of the top roof and the holes by rooms of stair, elevator and floor occurred stress concentration.4. The overall deformation and stress distribution of the structure is similar before and after optimization by contrasting the results of before and after optimization. The difference is that the displacement is increased and ductility is larger of structure. Therefore, when optimize shear wall under not change the wall location, the deformation of structure is similar before and after optimization.