The Study Of Appropriate Setting For Frame-shear Wall Structure

Being the combination of frame and shear wall, frame-shear wall system is widely adopted in modern high-rise buildings. This paper takes a project example to discuss the layout of the shear walls of the system and optimizes its stiffness. Specific work includes the following aspects:(1)Preliminary exploration of shear wall’s position and its length using SATWE software.(2)ANSYS is used to model and modal analyze the structure to extract the20-order modal of it, based on which to study the seismic performance by inputting acceleration response spectra along two major axes respectively. Then take contract of the result calculated by SATWE and find out the reason for the difference.(3)Suppose the shear wall’s positing and its length are determined value then optimize the weight of the structure by changing the thickness of the wall via the optimizing module in ANSYS limited by the maximum displacement of the structure’s top.(4)Comparative analysis on vibration characteristics, whole structural deformation and horizontal seismic force between the optimized structure and the former one.(5)Other five models are used additionally to study the influence produced by the length change of the shear wall on structure ductility.Based on those comparative analyses, it can be concluded that the position and length of the shear wall are two main factors on rigidity of structure which should be given priorities through the optimizing process.