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(廣州大學(xué)工程抗震研究中心  廣州 510405)
【提要】對(duì)某框剪結(jié)構(gòu)辦公樓采用橡膠隔震支座隔震設(shè)計(jì)進(jìn)行了探討。采用等效側(cè)力法和SAP2000 非線性有限元程序方法，對(duì)隔震結(jié)構(gòu)進(jìn)行了小震水平剪力、大震隔震層位移計(jì)算;對(duì)非隔震結(jié)構(gòu)進(jìn)行了小震水平剪力的計(jì)算，并對(duì)隔震結(jié)構(gòu)與非隔震結(jié)構(gòu)在小震時(shí)的水平剪力進(jìn)行了對(duì)比；將等效側(cè)力法與SAP2000 非線性計(jì)算的部分結(jié)果進(jìn)行了對(duì)比，發(fā)現(xiàn)隔震結(jié)構(gòu)計(jì)算的第一周期相差很小，但小震剪力比、隔震結(jié)構(gòu)大震位移相差較大。通過(guò)合理布置隔震支座的平面位置，可使上部結(jié)構(gòu)的質(zhì)心與隔震層的剛心盡量重合，通過(guò)對(duì)隔震層
偏心率的計(jì)算驗(yàn)證了其效果。
【關(guān)鍵詞】  框架結(jié)構(gòu)  隔震設(shè)計(jì)  等效側(cè)力法  非線性有限元分析  偏心率  SAP2000
Seismic Isolation Design and Research of a Frameshear Wall Structure Office Building/
Shen Chaoyong1,2,Zhou Fulin2,Huang Xiangyun2,Luo Xuehai2,Wei Lushun 2(1 School of Architecture,South China University of Technology,Guangzhou 5106
40,China; 2 Earthquake Eng. Research Test Center,Guangzhou Univ.,Guangzhou 510405, China)
Abstract:Seismic isolation design of one frameshear wall structure office building is p
erformed. The method of equivalent lateral force and SAP2000 nonlinear program are
adopted in the isolator structure design. The horizontal shear force of the isolated structure in minor earthquake and the horizontal displacement of isolation layer in major earthquake are calculated, and the force of the nonisolated structure is also calculated. According to the code of seismic design of buildings, the value of the horizontal shear force of isolated structure versus that of nonisolated structure in  minor earthquake is calculated and chec
ked, and the displacement of isolationlayer in isolated structure is also checked.They all meet the need of the code. Some results of the equivalent lateral force and SAP2000 program are compared.It can be concluded that the difference is less in the period of isolated structure, but there is much difference in the maximum ratio of the shear force in the stage of minor earthquake and in the displacement of the isolation layer in the major earthquake. After the isolators are reasonably arranged in the plan, it can shorten the distance between the center of mass and the center of stiffness, and reduce the torsion response of isolated structure.The ratio of eccentricity of the isolation layer is also si
mple calculated and testified the effect.
Keywords:frameshear wall structure; isolation design; equivalent lateral force; nonlinear analysis; ratio of eccentricity