組合隔振(震)砌體結(jié)構(gòu)模型振動(dòng)臺(tái)水平隔震試驗(yàn)研究*
李亞明1,胡錫勇2,酈敏浩2
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李亞明1,胡錫勇2,酈敏浩2(1上海建筑設(shè)計(jì)研究院有限公司, 上海 200041;2 同濟(jì)大學(xué)結(jié)構(gòu)工程與防災(zāi)研究所, 上海 200092)[摘要]遭受地鐵振動(dòng)影響的建筑往往位于抗震設(shè)防區(qū),對(duì)這類建筑進(jìn)行隔振設(shè)計(jì)時(shí),其隔振層最好兼具隔震的效果。某6層砌體結(jié)構(gòu)采用了橡膠支座與疊層橡膠滑板支座并聯(lián)的組合隔振(震)系統(tǒng),針對(duì)這種組合隔振(震)系統(tǒng)的水平隔震效果進(jìn)行了振動(dòng)臺(tái)試驗(yàn)研究,對(duì)比了隔震和非隔震情況下模型結(jié)構(gòu)在不同水準(zhǔn)地震作用后的動(dòng)力特性、加速度反應(yīng)、層間位移角反應(yīng)、基底剪力及模型結(jié)構(gòu)的破壞情況。結(jié)果表明,這種組合隔振(震)系統(tǒng)的水平隔震效果明顯。[關(guān)鍵詞]砌體結(jié)構(gòu); 組合隔震; 振動(dòng)臺(tái)試驗(yàn); 動(dòng)力特性中圖分類號(hào):TU352.1 文獻(xiàn)標(biāo)識(shí)碼:A 文章編號(hào):1002-848X(2013)13-0007-06Horizontal seismic isolation shaking table test of a masonry structure with composite isolation systemLi Yaming1, Hu Xiyong2, Li Minhao2(1 Shanghai Institute of Architectural Design & Research Co., Ltd., Shanghai 200041, China; 2 Research Institute of Structural Engineering and Disaster Reduction, Tongji University, Shanghai 200092, China)Abstract: Buildings suffered from the subway-induced vibration are frequently located in the seismic fortification area. The vibration isolation layer is expected to have the seismic isolation capacity when designing such buildings. A six-story masonry structure was equipped with rubber bearings and laminated rubber sliding bearings. To appraise the horizontal seismic isolation effect of the composite isolation system, the dynamic characteristics, acceleration responses, relative storey drifts, base shear force and damage of the structure with and without the composite isolation system under different earthquake levels were tested on the shaking table. The results show that the horizontal seismic isolation effect of the composite isolation system is remarkable.Keywords: masonry structure; composite isolation; shaking table test; dynamic characteristic*上海市科學(xué)技術(shù)委員會(huì)科研項(xiàng)目(09dz1207800),上海市城鄉(xiāng)建設(shè)和交通委員會(huì)科研項(xiàng)目(重科2010-002)。作者簡(jiǎn)介:李亞明,總工程師,教授級(jí)高工,一級(jí)注冊(cè)結(jié)構(gòu)工程師,Email:liym@siadr.com.cn。參考文獻(xiàn)[1]史金楠 R I. 工程隔震概論[M]. 北京: 地震出版社, 1996.[2]DGJ 089—2003 建筑抗震設(shè)計(jì)規(guī)程[S]. 上海, 2003.[3]CECS 126:2001 疊層橡膠支座隔震技術(shù)規(guī)程[S]. 北京: 中國(guó)標(biāo)準(zhǔn)出版社, 2001.[4]胡錫勇. 基于結(jié)構(gòu)效應(yīng)相似的模型試驗(yàn)方法研究應(yīng)用[D]. 上海: 同濟(jì)大學(xué), 2011.[5]張暉, 張善莉. 組合隔振(震)砌體結(jié)構(gòu)模型振動(dòng)臺(tái)豎向隔振研究[J]. 建筑結(jié)構(gòu),2013,43(13):13-16.
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