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(山東科技大學(xué)土木建筑學(xué)院，青島 266510)
［摘要］在實(shí)際工程中，鋼框架連接性能往往介于剛性節(jié)點(diǎn)和鉸接節(jié)點(diǎn)之間，呈半剛性連接。采用擬靜力試驗(yàn)方法進(jìn)行了角鋼連接的半剛性連接鋼框架在低周往復(fù)荷載作用下抗震性能的試驗(yàn)，研究了帶腹板雙角鋼、頂?shù)捉卿摪雱傂赃B接鋼框架在周期循環(huán)荷載作用下的滯回性能、延性和破壞機(jī)理等，為鋼結(jié)構(gòu)抗震設(shè)計(jì)提供了一定的理論參考。試驗(yàn)結(jié)果表明該鋼框架由于節(jié)點(diǎn)部位轉(zhuǎn)動(dòng)剛度小于剛性連接，使結(jié)構(gòu)的抗側(cè)剛度降低，側(cè)向變形增加，但是同時(shí)也改善了梁柱的內(nèi)力分布，提高了其在周期循環(huán)荷載作用下的滯回性能和耗能特性，比剛性連接鋼框架具有更好的抗震性能。
［關(guān)鍵詞］半剛性連接;滯回性能;延性;鋼框架
Experimental research on seismic behavior of steel frame with top and seat anglewith double web angles semi-rigid connections
Wang Lai, Zhou Nannan, Wang Guobing(College of Civil Engineering and Architecture,Shandong University of Science and Technology, Qingdao 266510, China)
Abstract:The behavior of beam-to-column connections with angles are between fully rigid connection and ideal pin connection, and belong to semi-rigid connection. Pseudo-static force testing of a steel frame with semi-rigid connections is carried out in order to study the hysteresis properties, ductility and failure mechanism of the steel frame and some theoretic reference for seismic design of steel frame structure are given. Experimental results indicate that lateral stiffness of the steel frame with semi-rigid connection reduce and the lateral displacement of the steel frame increase because of the smaller rotational stiffness of semi-rigid connection compare with the rigid connection and inner force of the steel frame occur great variation. Steel frame with semi-rigid connection has stable hysteresis properties, good energy dissipation properties and better earthquake-resistant capability.
Keywords:semi-rigid connection; hysteresis properties; ductility; steel frame
作者簡(jiǎn)介：王來(lái)，博士，教授，博導(dǎo)，山東科技大學(xué)土建學(xué)院院長(zhǎng)。從事鋼結(jié)構(gòu)與組合結(jié)構(gòu)的教學(xué)與科研。Email:wlrdtjxy@sina.com
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