Seismic Analysis Of High-rise Building With Short-leg Shear Wall Structure

Twenty-first Century is the " the century of city ". More and more people move into thecity. How to make a high-rise building with good seismic and economic performance on thelimited land became an direction which designers need to research. Short-leg shear wallstructure is a newly developed structure with advanced feature of frame structure and normalshear wall structure．It fulfills architectural function, carrying capacity and engineering budgetrequirements, so it is highly preferred by owners, developers and engineers. This engineeringsystem first appeared in engineering practice. But the studies of this engineering system,especially in seismic reaction analysis is absent. In order to fully utilizeits advantages andacquaint its anti-seismic quality,this paper take a high-rise shear wall structure building whichis in Xi’an as the background and the short-leg shear wall structure and the special-shapedcolumn frame shear wall structure were designed. Through the PKPM software, the index ofthese two structure were verified which illustrates the rationality of the structure. By using ofANSYS program, the model of the short-leg shear wall structure and the special-shapedcolumn frame shear wall structure and common shear wall structure were established.Through the comparative analysis of the difference of this three structure to make acomprehensive evaluation of the seismic performance of short-leg shear wall structure. Alsoby changing the thickness of the wall and the height of beam of the short-leg shear wallstructure, analyse the impact of these two components. In this paper, the main work is asfollows:(1).Based on the collection and retrieval of the related literature, introduced thecharacteristics of short-leg shear wall structure, and summarizes the development andresearch status of short-leg shear wall structure from two aspects of theoretical research andexperimental research.(2).Introduced the theory and method of aseismatic structure, including the static theory,response spectrum method and time history analysis method.(3).Through modal analysis of short-leg shear wall structure with special-shapedcolumn frame shear wall and shear wall, contast the natural vibration period of the differencebetween three structure. By change the thickness of the wall and the height of beam, analysethe influence of these two factors on the vibration characteristics of the structure.(4).Through the response spectrum analysis and the elastic time history analysis ofthree structure, contrast the difference between deformation and stress of structure. By changethe thickness of the wall and the height of beam, analyse the influence of these two factors onthe seismic performance of the structure. (5).For nonlinear static analysis under rare earthquake of the structure can help usfurther understanding the elastoplastic performance of the structure under rareearthquake,and to make a more thorough assessment of the reliability of short-leg shear wallstructures under rare earthquakes.The results of this paper can provide the necessary reference for the seismic designapplication of high-rise building.