CAJ | 학술논문

基于基础隔震体系的动力特性提出将阻尼器安装在框架结构底部楼层的优化布置策略。首先通过计算场地特征频率ω与减震结构底部隔震层固有频率ωn 的比值初步确定结构底部安装阻尼器的楼层数；随后针对减震结构层间位移容许值，通过几次简单的试算即可最终确定所需的阻尼器数量及其安装位置。采用Etabs和Perform-3D两种分析软件，选取2条实际强震纪录和1条人工模拟的加速度时程曲线对一栋10层的减震结构进行了弹性和弹塑性时程分析，表明在底部楼层安装阻尼器的减震结构具备与基础隔震体系类似的动力特性。
기우기출격진체계적동력특성제출장조니기안장재광가결구저부루층적우화포치책략。수선통과계산장지특정빈솔ω여감진결구저부격진층고유빈솔ωn 적비치초보학정결구저부안장조니기적루층수；수후침대감진결구층간위이용허치，통과궤차간단적시산즉가최종학정소수적조니기수량급기안장위치。채용Etabs화Perform-3D량충분석연건，선취2조실제강진기록화1조인공모의적가속도시정곡선대일동10층적감진결구진행료탄성화탄소성시정분석，표명재저부루층안장조니기적감진결구구비여기출격진체계유사적동력특성。
An optimal distribution strategy of the energy dissipation dampers installed in the bottom stories of frame structures was put forward based on dynamic characteristics of base-isolated system .Firstly ,the number of stories was defined by calculating the ratio of site characteristic frequency ωand bottom isolation stories natural frequency ωn of energy dissipation structure .Then ,with regard to storey drift permissible value ,the quantity and installation positions of dampers were defined through several simple calculations .2 sets of actual strong earthquake records and 1 set of artificial acceleration time-history curve for a 10 stories frame structure were selected to conduct the time-history analysis under frequently and rarely earthquakes by ETABS software and Perform-3D software .The results show that the dynamic characteristics of energy dissipation structure in which the dampers are installed in lower stories are similar to those of base-isolated system .