The Optimal Design Of Shear Wall Resisting Systems For High-rise Residential Building

In recent years, the shear wall resisting systems has been adopted at domestic and overseas. The main reason is that it has the advantages of good overall space, good anti-seismic performance. Since nowadays the residential investment from developers is a lot; the sales marketing is good; economic benefit is high, it is of great significance to optimize the design of the shear wall resisting systems of high-rise residential buildings.In the earthquake zone, if the lateral stiffness of shear wall is chosen too small, the earthquake effect will be smaller, but the deformation of housing will increase. Thus, earthquake resistance cannot be achieved. If the shear wall lateral stiffness increases, it will inevitably lead to the reduction of the natural period of vibration, but the earthquake effect may also increase accordingly. So how to choose the value of the lateral stiffness of shear wall to meet the relevant standards about the displacement limit value, ensure member having good ductility, the minimum lateral stiffness of shear wall and the minimum number of shear wall, then this optimal lateral stiffness of shear wall is the desired value.This paper, which has cited an engineering example of Changchun lateral shear resisting systems, discussed how to optimize the stiffness of shear wall. Setting up a high-rise shear wall structure project as the research object and according to the building layout, the layout of shear wall and calculation is given by the finite element structure analysis software YJK and SATWE. By considering that changing the shear wall limb length, concrete strength grade, earthquake intensity, site classification, the height, the total number of layers and other factors, the quantitative analysis of how those changes affect the shear wall lateral involving stiffness the maximum inter story displacement angle, the natural period of vibration, seismic shear force, shear weight ratio and stiffness to weight ratio. The analysis results showing that the length of the shear wall shear wall is an important factor which influences the internal force of the structure characteristics, combining with the model, optimize the cost from the economic perspective.The lateral stiffness and the earthquake influence were set as design variables and the target function prospectively. The maximum inter story displacement angle and structural stability was treated as the constrained conditions to establish the mathematical model of shear wall lateral stiffness of the whole structure showing the best stress state. The optimization design of the hierarchical optimization idea on the part of the lateral stiffness of shear wall is optimized by using MATLAB optimization; write the program corresponding to the complex method, and according to the engineering example analysis, showing that the method is reasonable and effective, and reasonable in economy, the preliminary design for structure design.Under the conduction of rare earthquakes, the elastic-plastic static analysis and dynamic elastic-plastic time history analysis has demonstrated that the optimized structure is reasonable and safe after the optimizing structure by using Pushover and Epda respectively...