柱承式群倉結(jié)構(gòu)模型模擬地震振動(dòng)臺(tái)試驗(yàn)研究
王錄民1,張華1,盧文勝2,肖昭然1,張昊1,許啟鏗1
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(1 河南工業(yè)大學(xué)土木建筑學(xué)院,鄭州 450052; 2 同濟(jì)大學(xué)土木工程防災(zāi)國家重點(diǎn)實(shí)驗(yàn)室,上海 200092)[摘要]通過對(duì)立筒群倉結(jié)構(gòu)1/16整體模型進(jìn)行模擬地震振動(dòng)臺(tái)試驗(yàn),測(cè)試了模型結(jié)構(gòu)的動(dòng)力特性及其在7度多遇、7度基本、7度罕遇地震作用下的加速度、位移和側(cè)壓力變化等動(dòng)力反應(yīng),研究了模型結(jié)構(gòu)的破壞機(jī)理和破壞模式,并根據(jù)試驗(yàn)結(jié)果和相似理論,推導(dǎo)和分析了原型結(jié)構(gòu)的地震反應(yīng)。試驗(yàn)及分析結(jié)果表明:立筒群倉模型整體抗震性能良好,能夠抵抗所在地區(qū)7度設(shè)防烈度下各水準(zhǔn)地震作用。同時(shí)對(duì)薄弱部位提出了加強(qiáng)措施。[關(guān)鍵詞]立筒群倉; 振動(dòng)臺(tái)試驗(yàn); 地震反應(yīng); 動(dòng)態(tài)側(cè)壓力Study of shaking table tests on the model of group silos structuresWang Lumin1, Zhang Hua1, Lu Wensheng2, Xiao Zhaoran1, Zhang Hao1, Xu Qikeng1(1 He’nan University of Technology Civil Engineering Institute, Zhengzhou 450052, China;2 Tongji University Civil Engineering Disaster Prevention Country Key Laboratory, Shanghai 200092, China)Abstract:A shaking table test of a 1/16 scale model of the reinforced concrete group silos was carried out.The dynamic properties,lateral pressure and responses of acceleration and deformation on the different level earthquakes were measured.Its dynamic behavior,cracking pattern and failure mechanism were studied as well. According to the model test results,the seismic response of the prototype was deduced and analyzed.Both the test and analytical results show that the prototype has a better seismic behavior, and it is able to survive under different level earthquakes.Some suggestions for the design of the structure were put forward.Keywords:group silos; shaking table model test; seismic response; dynamic lateral pressure*國家自然科學(xué)基金項(xiàng)目(50678061),河南省科技攻關(guān)項(xiàng)目(0624250004)。作者簡介:王錄民,碩士,教授,Email:zhengzhouzhh@yahoo.cn。參考文獻(xiàn)[1] 孫芳,王命平,耿樹江,等.柱承式筒倉的地震反應(yīng)分析[J]. 特種結(jié)構(gòu),2005,22(4):4-9.[2] GB50077—2003 鋼筋混凝土筒倉設(shè)計(jì)規(guī)范 [S].北京:中國計(jì)劃出版社,2003.[3] 王命平,孫芳,高立堂,等.筒承式群倉的地震作用分析及試驗(yàn)研究[J]. 工業(yè)建筑,2005,35(10):30-32.[4] 王錄民,張華.鋼筋混凝土立筒群倉結(jié)構(gòu)抗震模型的設(shè)計(jì)和制作[J]. 結(jié)構(gòu)工程師,2008,24(3):126-128.
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