The Research On Reasonable Quantity Of Shear Wall In Slab-Column-Shear Wall

Since the 21 st century,with the development of China's economy,the construction industry is rapidly developing at an unprecedented speed.The height is increased continuously and the styles become complex more and more.As a new type of architecture,the slab-column-shear wall structure(SCSW)is increasingly concerned by countries around the world.However,there are few studies on the SCSW structure in our country,especially when the structure is used in the seismic region.Because there is no clear optimization method,engineers design the number of shear walls too much for structural safety reasons,whichdon't give full play to the bearing capacity of the shear wall,causing a certain amount of waste.Moreover,the current research on this structure is not mature and has little experience,and its economic index is not clearly specified in the specification.Therefore,in the process of SCSW structural design,it is necessary to comprehensively consider its lateral resistance and economy under the premise of guarantee the structure safety.Therefore,the exploration of the reasonable rate of SCSW structure has important theoretical and practical guiding significance.The elastic time-history dynamic analysis(ET-HDA)and static nonlinear analysis(PUSHOVER)of the SCSW structure under different intensitys have been carried out in this paper.The main contents are:1.Based on the research result of the FSW,SW and SCSW structure,the rate of shear wall quantity index—the rate of decorated wall(?)and the theoretical analysis method of the structure are determined.2.According to research survey about the layout,quantity and model,and the hysteresis types,the constitutive model of the reinforced concrete,the SCSW structure is proved by ET-HDA and PUSHOVER.3.According to the design intensitys,building height and the rate of decorated wall,the 38 kinds of SCSW sturctures from BZQ-1~BZQ-38 are selected for standard response spectrum analysis.The torsional effect and the minimum seismic shear coefficient are determined by the period ratio and shear-weight ratio and exclude the structures that do not meet the requirements.Then,three earthquake records are selected for elastic dynamic analysis of each SCSW structure.The seismic performance of all structures is analyzed from the interlaminar shear force,the maximum displacement of the top layer and the maximum interlaminar displacement angle.4.On the basis of the above,use the static nonlinear analyze the remaining structures.The performance point is the intersection of demand spectrum and capability spectrum,and the seismic performance of the structure at the plastic stage is obtained through the interlayer shear,the interlayer displacement angle and the number of plastic hinges.In the premise that the displacement angle meets the requirements of the specification and the structure doesn't have the collapse point,the reasonable number of shear walls in the SCSW structure is obtained.Finally,the above analysis method is used to calculate and summarize the reasonable quantity of the SCSW structure with different building height,so as to provide reference for the actual project construction.