Seismic Isolation Design And Economic Study Of Frame Shear Wall Structure Based On Anti-regulation And Standard Separation

From ancient times to the present,earthquake disasters have brought countless losses to human beings.With the rapid development of China,the number of high-rise buildings increasing rapidly,which is urgent to study the seismic structure.In order to investigate the seismic performance and economy of different seismic isolation design methods for framed shear wall structures,this paper adopts the horizontal damping coefficient method in the "Resistance Regulations" and the bottom shear ratio method in the "Isolation Standards" and uses a secondary school office building as the engineering background for the seismic isolation design of framed shear wall structures.The basic research contents and conclusions are as follows:(1)The comparison and analysis of the differences between the two codes,"Resisting Code" and "Separation Standard".The main differences are the seismic prevention objectives,key design indexes,seismic response spectrum curves of building structures,seismic isolation design methods,and analysis methods of seismic effects.(2)ETABS and PKPM software were used to calculate the mass,fundamental period,base shear,and maximum inter-story displacement angle of the conventional seismic structure,respectively.After analysis and comparison,the difference between the results calculated by both software was within 5%.The maximum inter-story displacement angle is less than the limit value of 1/800 under the elastic time analysis of multiple earthquakes in the "Anti-Earthquake Regulations" for the time analysis of conventional seismic structures.The results of the elastic time analysis,elasto-plastic time analysis,and seismic isolation layer were tested for the anticonformal isolated structure and the isolated standard isolated structure,respectively,and the results were in accordance with the specifications.(3)The seismic performance of the three structures was analyzed from five perspectives:the fundamental period,bottom shear,top displacement,maximum interstory displacement angle,and absolute acceleration.The results showed that the seismic effect of the isolated structure was obviously improved.Compared with the conventional seismic structure,the basic periods of the standard isolated structure and the gauge isolated structure were extended by 2.7 and 2.4 times,respectively.The reduction rates of bottom shear,top displacement,and maximum inter-story displacement angle were 40% ～ 50% and 30% ～ 40%,respectively.At the same time,the minimum absolute acceleration ratios with the conventional seismic structure decreased to 0.54 and 0.61.Therefore,the seismic effect of the seismic isolation structure has been significantly improved,among which the seismic isolation effect of the isolated standard isolation structure has the best effect.(4)The three structures were analyzed economically in terms of cross-sectional dimensions of members,work volume,and total life cycle.The results show that,compared with the conventional seismic structure,the cross-sectional dimensions of the members of the seismic isolation structure are all smaller.In some floors,the cross-sectional dimensions of the members of the standard isolation structure are smaller than those of the gauge isolation structure,and the whole-life cycle cost of the gauge isolation structure and the standard isolation structure are reduced by (?)1447416.76 and (?)1459448.54,respectively.Compared with the gauge isolation structure,the concrete cost of the standard isolation structure is reduced by (?)104,816.5,but the cost of steel reinforcement is increased by (?)93,214.01.Through comprehensive analysis and calculation,the standard isolated structure is more economical compared with the anti-gauge isolation structure.