CAJ | 학술논문

对隔震层位于地下室柱顶的基础隔震四层框架结构，应用有限元软件ETABS进行三维建模和时程分析，同时设计中考虑了优化隔震支座的布置减小结构扭转效应、选取较大直径的隔震支座、加强地下室独立柱的刚度和结构有一定抵抗超烈度的安全储备等措施。设计和计算结果表明：在设防烈度7度（0．15 g ）中震作用下，水平向减震系数0．35；在7度（0．15 g ）大震作用下，上部结构基本处于弹性；在超烈度8度（0．20 g ）大震作用下，独立柱位移角仍然极小，楼层加速度减震效果显著，隔震层水平位移不超过限值的80％，整体结构具有较高的抗震性能。
대격진층위우지하실주정적기출격진사층광가결구，응용유한원연건ETABS진행삼유건모화시정분석，동시설계중고필료우화격진지좌적포치감소결구뉴전효응、선취교대직경적격진지좌、가강지하실독립주적강도화결구유일정저항초열도적안전저비등조시。설계화계산결과표명：재설방열도7도（0．15 g ）중진작용하，수평향감진계수0．35；재7도（0．15 g ）대진작용하，상부결구기본처우탄성；재초열도8도（0．20 g ）대진작용하，독립주위이각잉연겁소，루층가속도감진효과현저，격진층수평위이불초과한치적80％，정체결구구유교고적항진성능。
Regarding to a four-floor kindergarten building with its isolation layer on top of the basement columns ,a 3D model was established and the time-history analysis was conducted using the finite element software ETABS .In the de-sign ,some measures were also considered including optimizing the arrangement of isolation bearings to reduce torsional effect , selecting the the isolation bearings with larger diameter , strengthening the stiffness of basement independent columns and structures which have certain security storage for resisting ultra intensity .The design and calculation results indicate that the damping coefficient in horizontal direction is 0 .35 under 7 degree (0 .15 g) moderate earthquake;the upper part of the structure is elastic under 7 degree (0 .15 g ) strong earthquake;the independent column displacement angle is still minimum under 8 degree (0 .20 g ) ultra intensive earthquake ,and the floor acceleration damping effect is remarkable with the horizontal displacement of the isolation layer less than 80% of the limiting value ,therefore the over-all structure has a high seismic performance .