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(中國(guó)中元國(guó)際工程有限公司， 北京 100089)

［摘要］隔震技術(shù)通過設(shè)置隔震支座，可延長(zhǎng)結(jié)構(gòu)自振周期，降低結(jié)構(gòu)所受的地震作用。針對(duì)某醫(yī)療鋼結(jié)構(gòu)建筑，分別采用基于減震系數(shù)的分部設(shè)計(jì)法、直接分析設(shè)計(jì)法進(jìn)行隔震設(shè)計(jì)，通過同時(shí)考慮上部結(jié)構(gòu)非線性與隔震支座非線性的動(dòng)力時(shí)程分析，對(duì)不同地震水準(zhǔn)下隔震結(jié)構(gòu)的抗震性能進(jìn)行分析評(píng)價(jià)，同時(shí)與抗震結(jié)構(gòu)的抗震性能進(jìn)行對(duì)比。結(jié)果表明：采用直接分析設(shè)計(jì)法設(shè)計(jì)的隔震結(jié)構(gòu)抗震性能水平高于采用分部設(shè)計(jì)法設(shè)計(jì)的隔震結(jié)構(gòu)的抗震性能水平；相比于抗震結(jié)構(gòu)，隔震結(jié)構(gòu)的剪力、上部結(jié)構(gòu)層間位移及樓層加速度均較低，尤其是樓層加速度明顯降低，能夠保護(hù)內(nèi)部設(shè)備不發(fā)生傾覆破壞。 

［關(guān)鍵詞］醫(yī)療建筑；鋼結(jié)構(gòu)；基礎(chǔ)隔震；直接分析設(shè)計(jì)法；分部設(shè)計(jì)法；抗震性能 

中圖分類號(hào)：TU398-7 文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2021)18-0092-06

Isolation design and performance analysis of a medical steel structure 

FU  Yangqiang,  ZHANG  Tongyi 

(China IPPR International Engineering Co., Ltd., Beijing 100089，China) 

Abstract: Seismic isolation technology can prolong the natural vibration period of the structure and reduce the seismic action of the structure by setting isolation bearings. Aiming at a medical steel structure building, the seismic isolation design was carried out by using the partial design method based on the damping coefficient and the direct analytical design method. The seismic performance of the isolated structure under different seismic levels was analyzed with time history and evaluated by  considering both the non-linearity of the superstructure and the non-linearity of the isolation bearing. At the same time, the seismic performance of the isolated structure was compared with the seismic structure. The results show that the seismic performance level of the isolated structure designed by the direct analytical design method is higher than that of the isolated structure designed by the partial design method. Compared with the seismic structure, the shear force of the isolated structure, the inter-story displacement of the upper structure and the floor acceleration are better, especially the floor acceleration is significantly reduced, which can protect the internal equipment from overturning. 

Keywords: medical building； steel structure； base isolation； direct analytical design； partial design method； seismic behavior

作者簡(jiǎn)介：付仰強(qiáng)，高級(jí)工程師，一級(jí)注冊(cè)結(jié)構(gòu)工程師，Email：18610952656@163.com。