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（1 北京市建筑設(shè)計(jì)研究院有限公司， 北京 100045； 2 北京建筑大學(xué)土木與交通工程學(xué)院， 北京 100044）

［摘要］對(duì)高烈度區(qū)某鋼筋混凝土剪力墻結(jié)構(gòu)，采用了可提離裝置來(lái)釋放橡膠隔震支座的拉應(yīng)力，并進(jìn)行了隔震設(shè)計(jì)研究。采用SAP2000軟件對(duì)結(jié)構(gòu)進(jìn)行隔震設(shè)計(jì)，中震作用下的減震系數(shù)最大值為0-32，比非隔震結(jié)構(gòu)地震響應(yīng)減小顯著。將一種可以釋放隔震支座拉應(yīng)力的提離裝置應(yīng)用于結(jié)構(gòu)中，在一定程度上形成搖擺機(jī)制，利用結(jié)構(gòu)重力勢(shì)能抵抗一部分水平地震作用，并采用設(shè)置初始間隙的簡(jiǎn)易抗拉裝置解決結(jié)構(gòu)抗傾覆問題，解決了大震作用下隔震支座拉應(yīng)力過大的問題，驗(yàn)算結(jié)果表明隔震支座的極大和極小面壓、矢量水平位移能夠滿足規(guī)范要求。采用ABAQUS軟件對(duì)結(jié)構(gòu)進(jìn)行了大震作用下動(dòng)力彈塑性時(shí)程分析，結(jié)果表明結(jié)構(gòu)能夠滿足“大震不倒”的抗震設(shè)防目標(biāo)。

［關(guān)鍵詞］高烈度區(qū)； 動(dòng)力彈塑性時(shí)程分析； 橡膠隔震支座； 抗傾覆

中圖分類號(hào)：TU398+.2， TU352-12文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2019)18-0019-06

Research on design of base isolation structure with uplift device in high seismic fortification intensity region

Ge Dongdong1, Miao Qisong1, Bu Longgui1, Chen Xi1, Xie Linlin2, Xing Juehui1

(1 Beijing Institute of Architectural Design, Beijing 100045, China;  2 School of Civil and Transportation Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China)

Abstract:Uplift devices were used to release tensile stress of rubber isolation bearings and rubber isolation system design were performed for a reinforced concrete shear wall structure in the high seismic fortification intensity region.  The isolation design of the structure was carried out with SAP2000. The maximum damping coefficient of the inter-story shear force and overturning moment was 0-32, which was significantly lower than that of the non-isolation structure. A kind of uplift device which could release the tension of isolation bearing was applied to the structure, which formed a rocking mechanism to some extent to use the gravitational potential energy of the structure to resist part of horizontal earthquake action, and a simple tensile device with initial clearance was used to solve the problem of anti-overturning of the structure and solve the problem of excessive tensile stress of isolation bearing under the rare earthquake. The results show that the maximum and minimum surface pressure and the horizontal displacement of vector can meet the standard requirements. ABAQUS was used to conduct the dynamic elastic-plastic time-history analysis of the structure under the rare earthquake. Results show that the structure can meet the seismic fortification target of “no collapsing under the rare earthquake”.

Keywords:rubber isolation bearing; high seismic fortification intensity region; rare earthquake; dynamic elastic-plastic time-history analysis

作者簡(jiǎn)介：閤東東，博士，高級(jí)工程師，一級(jí)注冊(cè)結(jié)構(gòu)工程師，Email：gddhust@163.com。