Analysis Of The Seismic Performance Of The Partial Frame-supported Shear Wall Structure

Partial frame-supported shear wall structures are complicated high-rise buildings whose part of the shear wall cannot fall on the ground but directly on the frame support beam due to the functional requirement of the building. Since the social economy and engineering technology develop rapidly, partial frame-supported shear wall structures are more common in our actual projects. This kind of structures is increasingly popular in the industry of architects because the structures can meet the requirements of users for construction’s functional integration. However, the difference of locations of the upper and lower parts of conversion layer has an adverse impact on the vertical uniform quality and stiffness, which contributes to the complex seismic forces of partial frame-supported shear wall structures and the disadvantage of seismic resistance.Therefore, how to reduce the stiffness mutation of conversion layer effectively is a wider issue in engineering design. In recent years, conversion layer is set higher, but there has been few people researching on the seismic properties of high conversion layer.How to efficiently analyze and design the partial frame-supported shear wall structures and how to evaluate the anti-seismic performance in case of multi-case earthquake and rare earthquake are burning issues for structural engineers.On a basis of the multinational research achievements about partial frame-supported shear wall structures, this paper makes advantage of a practice of the structures and uses SAP2000 to establish its analytical model and to conduct its static and dynamic analysis according to modal response spectrum method and dynamic process analysis. Parameters, such as seismic intensity, height of conversion layer and section of the up and down member on conversion layer, can be used to analyze andcompare the influences from these parameters on the dynamic characteristics and seismic response and to offer suggestions for the design of such structures. Then, this article also utilizes three seismic waves for the elastic dynamic analysis according to the site of an actual project, compares the differences of results between dynamic analysis and spectrum analysis and indicates the significance to adopt the time-history analysis method for additional calculations. Last but not least, SAP2000 can be used for establishing and analyzing the elastic-plastic model. After this process, it shows the partial frame-supported shear wall structures can meet the seismic requirements, and there is certain safety margin under the earthquake circumstance.