某火力發(fā)電廠主廠房框排架結(jié)構(gòu)扭轉(zhuǎn)性能研究
白曉紅1,白國良2
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(1 河南科技大學(xué)規(guī)劃與建筑工程學(xué)院,洛陽 471003;2 西安建筑科技大學(xué)土木工程學(xué)院,西安 710055)[摘要]以某火力發(fā)電廠主廠房為原型,建立整體結(jié)構(gòu)的空間計算模型,對其分別進行模態(tài)分析和水平雙向地震作用下的彈塑性時程分析。結(jié)合擬動力和偽靜力試驗研究,探討框排架結(jié)構(gòu)的空間變形性能及塑性鉸的分布特點。針對此類結(jié)構(gòu)特點引起的嚴(yán)重地震扭轉(zhuǎn)效應(yīng),提出減小扭轉(zhuǎn)的措施,改善了火力發(fā)電廠主廠房在高烈度地震作用下的動力性能,為工程設(shè)計提供參考依據(jù)。[關(guān)鍵詞]框排架結(jié)構(gòu);不規(guī)則性;雙向偏心;擬動力試驗;扭轉(zhuǎn)中圖分類號:TU375.4文獻標(biāo)識碼:A文章編號:1002-848X(2011)08-0044-05Research on the torsional performance of frame-bent structure for main building of a thermal power plantBai Xiaohong1, Bai Guoliang2(1 Planning and Architectural Engineering College, Henan University of Science & Technology, Luoyang 471003,China; 2 School of Civil Engineering, Xi’an University of Architecture & Technology, Xi’an 710055,China)Abstract:Based on the prototype of main building in a thermal power plant, the spatial computational model of integral structure was established. Modal analysis and elasto\|plastic time history analysis under two-directional horizontal earthquake were carried out. Combined with the former quasi-dynamic experiment and pseudo-static experiment, the spatial deformation performance and plastic hinges distribution were studied. At last, the torsional controlling measures against the serious torsional response induced by the structural features were pointed out which can be used as reference to engineering design and the dynamic performance of main building in thermal power plants would be enhanced.Keywords:frame-bent structure; irregularity; biaxial eccentric; quasi\|dynamic experiment; torsion*國家自然科學(xué)基金項目(50578129),教育部博士點專項基金項目(20060703001),河南科技大學(xué)博士科研啟動基金(09001352)。作者簡介:白曉紅,博士,副教授,Email:bxh99@163.com。參考文獻[1]白國良,吳濤. 河南姚孟電廠一號機組廠房可靠性檢測報告[R]. 西安:西安建筑科技大學(xué)土木工程學(xué)院,2001.[2]GB50011—2001 建筑抗震設(shè)計規(guī)范[S]. 2008版.北京:中國建筑工業(yè)出版社,2008.[3]白國良,吳濤. 大型火力發(fā)電廠鋼筋混凝土框排架主廠房抗震性能試驗研究報告[R]. 西安:西安建筑科技大學(xué)土木工程學(xué)院,2002.[4]白曉紅. 鋼筋混凝土框排架結(jié)構(gòu)的平扭耦聯(lián)多維地震反應(yīng)分析[D]. 西安:西安建筑科技大學(xué),2008.[5]JGJ3—2002 高層建筑混凝土結(jié)構(gòu)技術(shù)規(guī)程[S]. 北京:中國建筑工業(yè)出版社,2002.[6]曲哲,葉列平. 附加子結(jié)構(gòu)抗震加固方法及其在日本的應(yīng)用[J]. 建筑結(jié)構(gòu),2010,40(5):55-58.