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（內(nèi)蒙古科技大學(xué)土木工程學(xué)院， 包頭 014010）

［摘要］為了研究端板厚度和柱翼緣厚度對(duì)部分包裹混凝土組合柱（PEC柱）-型鋼梁端板連接框架結(jié)構(gòu)抗震性能的影響，對(duì)3榀PEC柱型鋼梁端板連接框架進(jìn)行低周反復(fù)荷載試驗(yàn)，得出各框架試件的滯回曲線(xiàn)、極限承載力、轉(zhuǎn)角延性系數(shù)以及初始剛度等抗震性能數(shù)據(jù)。試驗(yàn)表明：端板厚度由12mm增加到20mm，試件承載力增加2%，試件初始剛度提高22-44%，轉(zhuǎn)角延性系數(shù)提高10%，耗能能力增加12-87%。柱翼緣厚度由12mm增加到16mm，試件最大承載力提高13-00%，初始剛度提高50-77%，耗能能力增加9-80%，但轉(zhuǎn)角延性系數(shù)降低3-4%。增加柱翼緣厚度可以明顯提高框架的極限承載力。端板和柱翼緣厚度越大，框架節(jié)點(diǎn)初始轉(zhuǎn)動(dòng)剛度越大。增加端板厚度可以明顯改善框架節(jié)點(diǎn)的轉(zhuǎn)角延性，增加柱翼緣厚度會(huì)降低框架的轉(zhuǎn)角延性。為探究上述規(guī)律的一般適用性，以試驗(yàn)為基礎(chǔ)，進(jìn)行有限元模擬拓展分析，得到與試驗(yàn)類(lèi)似結(jié)論。

［關(guān)鍵詞］PEC柱； 框架結(jié)構(gòu)； 端板連接； 抗震性能

中圖分類(lèi)號(hào)：TU375-2文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2018)06-0068-08

Experimental research on frame seismic behavior of the PEC column-steel beam connected by end plate

Zhao Gentian, Wang Lina, Di Hao

(School of  Civil Engineering， Inner Mongolia University of Science & Technology，  Baotou 014010， China)

Abstract:In order to study the effect of the thickness of end plate and column flange on seismic performance of frame of the partially encased concrete column（PEC column）-steel beam connected by end plate, low cyclic loading tests of three frame specimens of PEC column-steel beam were conducted. The hysteretic curves, ultimate strength, angle ductility, initial rigidness and other relevant seismic performance indicators were carried out. The test results show that, as the end plate thickness increases from 12mm to 20mm, the ultimate load of framework rises by 2%, initial rigidness increases by 22-44%，angle ductility coefficient and cost energy increases by 10% and 12-87% respectively. As the column flange thickness increases from 12mm to 16mm, the ultimate load of framework increases by 13%, the initial rigidness and cost energy increase by 50-77% and 9-80% respectively，but the angle ductility coefficient decreases by 3-4%. Increasing the thickness of column flange can observably improve the bearing capacity of the frame. The more the thickness of end plate and column flange, the greater the frame node initial stiffness. Increasing the thickness of end plate can increase the turn ductility of frame nodes. The optimization node ductility by increasing the column flange thickness is less. Based on experimental research, the finite element simulation was carried out to explore the general nature of the above rules. And the conclusion is similar to the experiment.

Keywords:partially encased concrete column(PEC column); frame structure; end plate connection; seismic performance

*國(guó)家自然科學(xué)基金項(xiàng)目（51268042）。

作者簡(jiǎn)介：趙根田，博士，教授，Email：zhaogentian93110@sina.com。