- 摘 要
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（1 河北工業(yè)大學(xué)土木工程學(xué)院， 天津 300401； 2 中煤陜西中安項目管理有限責任公司， 西安 710054；3 河北省建筑科學(xué)研究院， 石家莊 050021； 4 河北建研科技有限公司， 石家莊 050021）
［摘要］為了確保古建筑的抗震安全性，將隔震技術(shù)應(yīng)用于古建筑。采用數(shù)值模擬方法研究了古建筑隔震，建立了非隔震和隔震兩種古建筑有限元模型，進行了動力時程分析。通過輸入不同頻譜的RH4TG035波、TH2TG035波和TH4TG035波，對比分析了兩種模型在地震作用下的位移、加速度時程曲線。結(jié)果表明：設(shè)置隔震層后，非隔震結(jié)構(gòu)和隔震結(jié)構(gòu)的振動形態(tài)不同，非隔震結(jié)構(gòu)做下小上大的擺動型振動，隔震結(jié)構(gòu)以隔震層為分界點，上部結(jié)構(gòu)做整體型的剛體振動。與非隔震結(jié)構(gòu)相比，隔震結(jié)構(gòu)的相對位移和相對加速度時程反應(yīng)較小，表明設(shè)置隔震層可以有效地減小地震響應(yīng)，從而能夠保護古建筑的抗震安全性。
［關(guān)鍵詞］古建筑； 隔震； 抗震性能； 有限元分析
中圖分類號：TU378.8， P315-9文獻標識碼：A文章編號：1002-848X(2017)17-0071-05
Study on seismic protection of ancient buildings based on seismic isolation technology
Du Chuang1, Chen Haixia2, Bian Zhihui3, Li Xuguang4
(1 College of Civil Engineering, Hebei University of Technology, Tianjin 300401, China; 2 China Coal Shaanxi Zhong′an Project Management Co., Ltd., Xi′an 710054,China; 3 Hebei Academy of Building Research, Shijiazhuang 050021, China; 4 Hebei Building Research Technology Co., Ltd., Shijiazhuang 050021, China)
Abstract:In order to ensure the seismic safety of the ancient buildings, the seismic isolation technique was used in the ancient buildings. The seismic isolation of the ancient buildings was studied by numerical simulation method. Two finite element models of non-seismic isolation and seismic isolation respectively were established, and the dynamic time-history analysis was preceded. The displacement and acceleration time-history curves of both models were compared and analyzed by inputting different frequency spectrums of RH4TG035 wave, TH2TG035 wave and TH4TG035 wave. The results show that non-seismic isolation structure and seismic isolation structure are different in forms of vibration. The non-seismic isolation structure is swing vibration modes, while the seismic isolation structure features integral rigid body vibration of the upper structure upon the boundary of the seismic isolation layer. Compared with non-seismic isolation structure, the relative displacement and acceleration responses is smaller for seismic isolation structure, which indicates that the seismic isolation layer can effectively reduce the impact of earthquake to ensure the seismic safety of ancient buildings.
Keywords:ancient building; seismic isolation; seismic behavior; finite element analysis
*國家自然科學(xué)基金項目（51379142），河北省教育廳青年基金項目（QN20131177），河北省科技廳基金（15275802）。
作者簡介：杜闖，博士，講師，Email:duch_1@sina.com。
