- 摘 要
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(1 交通運(yùn)輸部天津水運(yùn)工程科學(xué)研究所水工構(gòu)造物檢測、診斷與加固技術(shù)交通行業(yè)重點(diǎn)實(shí)驗室，天津 300456； 2 防災(zāi)科技學(xué)院， 北京 101601)
［摘要］為了滿足振動臺試驗中砌體墻體軸壓比相似的要求，提出了一種預(yù)應(yīng)力加載法。采用該預(yù)應(yīng)力加載法對一座底商砌體結(jié)構(gòu)模型進(jìn)行了振動臺試驗加載，共進(jìn)行了21次地震動輸入，獲取了不同地震動輸入水平下的結(jié)構(gòu)反應(yīng)及結(jié)構(gòu)的相應(yīng)模態(tài)。試驗結(jié)果表明，該預(yù)應(yīng)力加載法提高了整體結(jié)構(gòu)的豎向壓力，在提高結(jié)構(gòu)構(gòu)件軸壓比方面是可行且有效的。由試驗結(jié)果反演可知，原型結(jié)構(gòu)達(dá)到了8度小震不壞的抗震設(shè)防目標(biāo)，高于相關(guān)規(guī)范中的抗震性能要求。
［關(guān)鍵詞］軸壓比; 砌體結(jié)構(gòu); 振動臺試驗; 預(yù)應(yīng)力加載
中圖分類號：TU317+.1 文獻(xiàn)標(biāo)識碼：A 文章編號：1002-848X(2014)15-0088-06
Application of the prestressed loading method with realization of axial compression ratio similarity in masonry structure shaking table test
Liu Hongbiao1, Zhang Qiang1, Guo Xun2
(1 Key Laboratory of Harbor & Marine Structure Safety, Ministry of Communications, Tianjin Research Institute of Water Transport Engineering, Tianjin 300456, China; 2 Institute of Disaster Prevention, Beijing 101601, China)
Abstract: In order to satisfy the requirement of the axial compression ratio similarity of the masonry wall in shaking table test, a prestressed loading method was proposed. The method was used in the shaking table test loading of a commercial masonry structure model. The model was subjected to twenty-one times of different ground motions, and the earthquake responses and modal properties of the model were assessed. Test results prove that the prestressed loading method increases the vertical compression of the whole structure and is effective in enhancing the axial compression ratio of structural specimens. From the inversion of the test results, the prototype structure can achieve the seismic fortification goal of no damage with 8 intensity weak earchquake, which is higher than the requirements of the seismic performance in the relevant codes.
Keywords: axial compression ratio; masonry structure; shaking table test; prestressed loading
*交通運(yùn)輸部天津水運(yùn)工程科學(xué)研究所基本科研項目（TKS140101）。
作者簡介：劉紅彪，博士，工程師，Email:liuhbhit@hotmail.com。
參考文獻(xiàn)
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