Ductile Shear Wall Supported By Frame Analysis Of The Conversion Layer

Since the beginning of the20th century, the rapid development of the construction industry, architectural forms are required to become diversified, the frame supported shear wall structure is put forward in the background, this upper part of the structure in the form is shear wall structure, can be used as residential buildings, the lower part is the grame structure,can be used as commercial outlets. Frame supported shear wall structure because of its unique structure form can bring huge economic benefits so favored by the majority of the owners,while the research and innovation of the structure are also sought by the majority of architectural scholars. The most important structural members in frame supported shear wall structure is concentrated in transform layer, this paper analysis the ductility of frame supported shear wall structure transform layer, choosing a practical engineering in Wuhan City, the model builded by using the finite element software SATWE, to analyze the following situation under the seismic action by changing the transform layer settings:To investigate the effects of different transform layer settings on the structure period, the maximum story drift, the maximum story drift angle. To investigate the effects of different transform layer settings on the structure of bottom shear, overturning moment, seismic force. Discussion on the different transform layer settings comparison of the shear wall and frame supported shear wall internal force changes.To investigate the transform layer on the equivalent lateral stiffness ratio changes effects on the structure of the seismic performance. To investigate the effects of hypothesis of the rigid floor and elastic floor on the seismic performance of transform layer structure in modeling.To explore the differences between seismic performance of stricture dynamic time history analysis method and the mode decomposition response plectrum method. And the research results are achieved as follows:1) When the transform layer increases, self vibration period of the structure have slightly change, but not obvious. Displacement angle of transform layer changes obviously, reduces the seismic performance of frame supported shear wall structure, easy to make the transform layer is formed weak layer.2) When transform layer setting increases, the structure of the bottom shear, overturning moment moderate growth, but the seismic response in the transform layer change drastically, and significantly greater than the upper and lower floors.3) Equivalent lateral stiffness ratio as a measure of frame supported shear wall structure important parameters, if the transform layer set high increase, then the parameter decreases, the seismic unfavorable. Specification requires its parameters close to1as possible.4)Frame supported shear wall structure should be calculated using time history analysis method to calculate the results of response spectrum method to verify and supplement can be integrated envelope according to the most unfavorable factors, improving the safety of the structure as a whole.