- 摘 要
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（1 廣西大學(xué)行健文理學(xué)院， 南寧 530005； 2 廣西大學(xué)土木建筑工程學(xué)院， 南寧 530004；3 廣西防災(zāi)減災(zāi)與工程安全重點(diǎn)實(shí)驗(yàn)室， 南寧 530004；4 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）
［摘要］為了研究蜂窩輕鋼門式剛架節(jié)點(diǎn)的抗震性能，對該類新型節(jié)點(diǎn)進(jìn)行了循環(huán)反復(fù)荷載試驗(yàn)。共設(shè)計(jì)4個(gè)蜂窩式節(jié)點(diǎn)和1個(gè)原型鋼實(shí)腹式節(jié)點(diǎn)，考慮了節(jié)點(diǎn)連接形式、節(jié)點(diǎn)域加勁肋的設(shè)置和開孔中心至節(jié)點(diǎn)域距離三個(gè)變化參數(shù)對結(jié)構(gòu)的影響。通過試驗(yàn)得到該類新型節(jié)點(diǎn)的破壞特征、荷載位移曲線以及節(jié)點(diǎn)承載力，分析節(jié)點(diǎn)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：與原型鋼實(shí)腹式節(jié)點(diǎn)相比，蜂窩式節(jié)點(diǎn)具有承載力高，剛度大的優(yōu)點(diǎn)，但是耗能能力相對較弱；蜂窩式節(jié)點(diǎn)的耗能性能與節(jié)點(diǎn)的連接方式以及開孔中心至節(jié)點(diǎn)域的距離有關(guān)，而節(jié)點(diǎn)域加勁肋對節(jié)點(diǎn)抗震性能的影響不大。
［關(guān)鍵詞］蜂窩構(gòu)件; 門式剛架; 節(jié)點(diǎn); 輕鋼結(jié)構(gòu); 抗震性能
中圖分類號(hào)：TU392.5 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1002-848X(2014)12-0080-05
Experimental study on seismic performance of joints in the castellated portal frame of light-weight steel
Zheng Shufang1, Su Yisheng2, 3, Zhang Wen2, Li Qiliang4
(1 Xingjian College of Science and Liberal Arts, Guangxi University, Nanning 530005, China; 2 College of Civil Engineering and Architecture, Guangxi University, Nanning 530004, China; 3 Key Laboratory of Disaster Prevention and Safety Engineering in Guangxi, Nanning 530004, China; 4 Guangxi Hualan Design & Consulting Group, Architectural Design Institute, Nanning 530000, China)
Abstract: In order to study the seismic performance of joints in the castellated portal frame of light-weight steel, the low-cyclic reversed loading experiment was performed for this new structure type. The experiment members include four castellated joints and one original steel solid-web joint, considering three variable parameters including connection form of joints, stiffeners layout in joint region and the distance from the center of hole to joint region. From the test, the failure mode, the load-displacement curve and the bearing capacity were obtained, and the relationships of the structural performances such as the energy dissipation capacity, the ductility and stiffness degradation and so on with the variable parameters were given. The results show that the castellated joints have the advantages of high bearing capacity and high stiffness, but the energy dissipation is weak compared with the original steel solid-web joint. The connection types of joints and the distance from the center of hole to joint region have great effect on the energy dissipation of the castellated joints, and the stiffeners in joint region has little effect.
Keywords: castellated component; portal frame; joint; 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）。
通訊作者：蘇益聲，教授，博士生導(dǎo)師，Email:suyisheng@sina.com。
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