廣東科學(xué)中心E區(qū)結(jié)構(gòu)模型振動(dòng)臺(tái)試驗(yàn)與動(dòng)力特性分析
張季超1，李霆2，易和3，周觀根4，郭曼麗1，李鵬程1
- 摘 要
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（1 廣州大學(xué)，廣州 510006； 2 中南建筑設(shè)計(jì)院，武漢 430071；3 廣東科學(xué)中心，廣州 510006； 4 浙江東南網(wǎng)架股份有限公司，杭州 311209）［摘要］為了研究廣東科學(xué)中心E區(qū)的抗震性能，提高結(jié)構(gòu)的抗震安全性，有效保護(hù)結(jié)構(gòu)室內(nèi)設(shè)備、儀器和展品的安全，采用了1∶35的比例制作縮尺模型，對(duì)該模型進(jìn)行了模擬地震振動(dòng)臺(tái)試驗(yàn)，分析對(duì)比了固接、隔震、消能三種模型在不同地震作用下的動(dòng)力特性和地震反應(yīng)。試驗(yàn)采用場(chǎng)地波、El Centro波、Taft波等三種地面運(yùn)動(dòng)，以不同的地震加速度幅值進(jìn)行X，Y，Z三個(gè)主軸方向的地震試驗(yàn)。試驗(yàn)測(cè)得的數(shù)據(jù)和試驗(yàn)時(shí)的宏觀現(xiàn)象進(jìn)行綜合分析結(jié)果表明，固接結(jié)構(gòu)、消能結(jié)構(gòu)、隔震結(jié)構(gòu)在7度小震、中震、大震作用下，自振周期變化均控制在10%以內(nèi)，可以認(rèn)為結(jié)構(gòu)基本上均處于彈性工作階段。采取隔震措施，可以明顯改善結(jié)構(gòu)的抗震性能，對(duì)于平面不規(guī)則結(jié)構(gòu)，更能改善結(jié)構(gòu)的抗扭性能，提高結(jié)構(gòu)的抗震安全性。［關(guān)鍵詞］振動(dòng)臺(tái)試驗(yàn)；固接結(jié)構(gòu)；消能結(jié)構(gòu)；隔震結(jié)構(gòu)；加速度反應(yīng)；位移反應(yīng)；自振頻率Dynamic analysis and test of structural models of area E in Guangdong Science CenterZhang Jichao1，Li Ting2，Yi He3，Zhou Guangen4，Guo Manli1，Li Pengcheng1(1 Guangzhou University, Guangzhou 510006,China; 2 Central-South Architectural Design Institute, Wuhan 430071,China;3 Guangdong Science Center, Guangzhou 510006,China; 4 Zhejiang Southeast Space Frame Co.,Ltd., Hangzhou, 311209,China)Abstract:In order to investigate the seismic performance of area E in Guangdong Science Centre, improve seismic safety of the structure, and effectively protect the structure interior equipment, apparatus, and the safety of exhibits, a model with a scale of 1∶35 was fabricated and tested on the large-scale shaking-table. Three kinds of models for the consolidation, isolation, energy dissipation under different seismic dynamic characteristics and seismic response were analyzed and compared. In the test, three kinds of ground motions including space waves, El Centro wave, Taft wave were used with different amplitudes of the seismic acceleration for three axis directions of X, Y, Z. It can be found out from a comprehensive analysis with the test data and phenomena that the change of the natural frequency of structure, energy dissipation structure, isolated structure is less than 10%，the structure are basically in elastic working stages，and taking isolation measures can significantly improve the seismic performance. And for irregular surface structure, the torsional performance will be enhanced and the seismic safety of structures nature will be increased.Keywords:shaking-table test; fixed structure; energy dissipation structure; isolated structure; acceleration response; displacement reaction; vibration frequency廣東省科技計(jì)劃項(xiàng)目(2004B10101048)，(2005A11601014)，(2006B37301009)；建設(shè)部科技計(jì)劃項(xiàng)目(2005K148)，(2006K301)，(2007K309)。作者簡(jiǎn)介：張季超(1956-)，男，教授，Email:zhangjichao1956@126.com。參考文獻(xiàn)［1］廣東科學(xué)中心隔震和消能結(jié)構(gòu)模型模擬地震振動(dòng)臺(tái)試驗(yàn)研究報(bào)告(ST－0501－189)［R］.廣州:廣州大學(xué)工程抗震研究中心,2005.［2］JGJ101—96建筑抗震試驗(yàn)方法規(guī)程［S］.北京:中國(guó)建筑工業(yè)出版社,1997.［3］周福霖.工程結(jié)構(gòu)減振控制［M］.北京:地震出版社,1997.［4］GB50011—2001建筑抗震設(shè)計(jì)規(guī)范［S］.2008年版.北京:中國(guó)建筑工業(yè)出版社,2008.
［5］廣東科學(xué)中心工程場(chǎng)地地震安全性評(píng)價(jià)報(bào)告［R］.廣東省地震工程勘測(cè)中心,2004.
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