- 摘 要
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（1 廣西大學(xué)土木建筑工程學(xué)院， 南寧 530004； 2 廣西大學(xué)行健文理學(xué)院， 南寧 530005；3 廣西華藍(lán)設(shè)計(jì)(集團(tuán))有限公司建筑設(shè)計(jì)院， 南寧 530000；4 廣西大學(xué)工程防災(zāi)與結(jié)構(gòu)安全教育部重點(diǎn)實(shí)驗(yàn)室， 南寧 530004）
［摘要］為了研究蜂窩輕鋼門式剛架的抗震性能，對該類新型結(jié)構(gòu)進(jìn)行了低周反復(fù)荷載試驗(yàn)研究。設(shè)計(jì)兩個蜂窩輕鋼門式剛架試件進(jìn)行試驗(yàn)，考慮了開孔形式、開孔率和節(jié)點(diǎn)域加勁肋三種參數(shù)對結(jié)構(gòu)性能的影響。通過試驗(yàn)得到該類結(jié)構(gòu)的破壞形態(tài)、荷載位移曲線以及承載力等重要數(shù)據(jù)，分析結(jié)構(gòu)的耗能能力、延性、剛度退化等結(jié)構(gòu)性能與變化參數(shù)的關(guān)系。試驗(yàn)研究表明：蜂窩輕鋼門式剛架在加載遠(yuǎn)端節(jié)點(diǎn)附近梁、柱上的蜂窩孔處形成塑性鉸而發(fā)生破壞，具有良好的延性性能；蜂窩輕鋼門式剛架的耗能能力小于普通門式剛架，且圓形開孔形式的蜂窩輕鋼門式剛架的抗震性能比六邊形開孔形式的好；隨著蜂窩鋼構(gòu)件腹板開孔率的增大，結(jié)構(gòu)的剛度和極限承載力有所降低；節(jié)點(diǎn)域受力較小，設(shè)計(jì)時(shí)只需按常規(guī)的節(jié)點(diǎn)處理即可，節(jié)點(diǎn)域無需設(shè)置加勁肋。研究結(jié)果可為蜂窩輕鋼門式剛架的進(jìn)一步研究和推廣應(yīng)用提供參考。
［關(guān)鍵詞］蜂窩構(gòu)件; 門式剛架; 輕鋼結(jié)構(gòu); 抗震性能
中圖分類號：TU392.5 文獻(xiàn)標(biāo)識碼：A 文章編號：1002-848X(2014)12-0074-06
Experimental study on seismic performance of the castellated portal frame of light-weight steel
Su Yisheng1, 4, Zheng Shufang2, Li Qiliang3, Chen Zongping1, 4
（1 College of Civil Engineering and Architecture, Guangxi University, Nanning 530004, China; 2 Xingjian College of Science and Liberal Arts, Guangxi University, Nanning 530005, China; 3 Guangxi Hualan Design & Consulting Group, Architectural Design Institute, Nanning 530000, China; 4 Key Laboratory of Disaster Prevention and Structural Safety of China Ministry of Education, Guangxi University, Nanning 530004, China）
Abstract: In order to study the seismic performance of the castellated portal frame of light-weight steel, the low cyclic reversed loading experiment was performed for this new structure type. Two specimens were designed and three influential parameters were considered including the opening forms, the opening ratio and stiffener in the joint region. The failure mode, the load-displacement curve and the bearing capacity were obtained from the test, and the relationship of the structural performance such as the energy dissipation capacity, the ductility and stiffness degradation with the variable parameters were studied. The results of study show that the castellated portal frame of light-weight steel is destructed by loading the castellated holes around the beam and column near the distal joints to form the plastic hinge, which presents excellent ductility. The energy dissipation capacity of the castellated portal frame of light-weight steel is less than that of the hexagon form portal frame, but the seismic performance of the castellated portal frame of light-weight steel with circle opening forms is better than that the hexagon from portal frame. The stiffness and the limit bearing capacity decrease when the web opening ratio of structure increases. Due to weak stress in the joint region, the stiffener should not be considered in the design of joints and joints could be designed according to the common joints. The results can provide reference for further research and application of the castellated portal frame of light-weight steel.
Keywords: castellated component; portal frame; light-weight steel structure; seismic performance
*廣西科學(xué)研究與技術(shù)開發(fā)計(jì)劃項(xiàng)目（桂科攻0995008），廣西防災(zāi)減災(zāi)與工程安全重點(diǎn)實(shí)驗(yàn)室項(xiàng)目（20122DX02）。
作者簡介：蘇益聲，教授，博士生導(dǎo)師，Email:suyisheng@sina.com。
參考文獻(xiàn)
［1］KERDAL D, NETHERCOT D A. Failure modes for castellated beams［J］. Journal of Constructional Steel Research, 1984, 4(4):295-315.
［2］蘇益聲,鄒錦華,張喜德. 圓形孔蜂窩鋼梁試驗(yàn)研究［J］. 建筑結(jié)構(gòu),2006,36(8),28-30.
［3］陳紹蕃.鋼結(jié)構(gòu)下冊(房屋建筑鋼結(jié)構(gòu)設(shè)計(jì))［M］. 北京：中國建筑工業(yè)出版社, 2003.
［4］郭秉山,彭軍,劉朝科.梁腹板削弱式剛性鋼框架抗震性能研究［J］. 西安科技大學(xué)學(xué)報(bào):自然科學(xué)版,2007,27(3):364-367.
［5］李波,楊慶山,茹繼平,等. 梁腹板開圓孔的鋼框架抗震性能研究［J］. 工程力學(xué),2009,26(1):64-73.
［6］賈連光,王健. 蜂窩式梁-柱鋼框架結(jié)構(gòu)抗震性能分析［J］. 沈陽建筑大學(xué)學(xué)報(bào)：自然科學(xué)版, 2009,25(3):451-455.
［7］賈連光,孫宏達(dá),王春剛. 蜂窩式鋼框架結(jié)構(gòu)抗震性能試驗(yàn)研究［J］. 工程力學(xué),2012,29(7):147-153.
［8］李啟良.蜂窩輕鋼門式剛架受力性能試驗(yàn)與有限元研究［Ｄ］．南寧：廣西大學(xué)，2012.
［9］徐勇,陳以一,程欣，等. 輕型門式剛架抗震性能試驗(yàn)研究［J］. 建筑結(jié)構(gòu)學(xué)報(bào),2010,31(10):76-82.
［10］KATO B, CHEN W F, NAKAO M. Effects of joint-panel shear deformation on frames［J］. Journal of Constructional Steel Research, 1988, 10(1):269-320.
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