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（1 中國(guó)地震局工程力學(xué)研究所地震工程與工程振動(dòng)重點(diǎn)實(shí)驗(yàn)室， 哈爾濱 150080； 

2 北京工業(yè)大學(xué)建筑工程學(xué)院， 北京 100124；  3 中原工學(xué)院建筑工程學(xué)院， 鄭州450007）

［摘要］為研究工字形截面型鋼混凝土短柱的受壓性能，設(shè)計(jì)了5個(gè)1/20縮尺工字形截面型鋼混凝土短柱試件，各試件幾何尺寸、配筋、配鋼均相同，進(jìn)行了不同偏心距、不同加載方向工況下的軸壓、偏壓?jiǎn)握{(diào)加載試驗(yàn)。通過(guò)試驗(yàn)，分析了各試件的破壞特征、承載力、剛度及退化過(guò)程等。對(duì)比分析了偏心距、加載方向?qū)ぷ中谓孛嫘弯摶炷炼讨軌盒阅艿挠绊懸?guī)律。基于試驗(yàn)，進(jìn)行了工字形截面型鋼混凝土短柱受壓承載力計(jì)算，計(jì)算結(jié)果與試驗(yàn)結(jié)果符合較好。研究表明：工字形截面型鋼混凝土短柱具有良好的彈塑性變形能力和較高的承載力；隨著偏心距的增大，工字形截面型鋼混凝土短柱的承載力逐漸降低，彈塑性最大位移逐漸增大，延性逐漸增強(qiáng)，剛度退化逐漸減慢；偏心距相近時(shí)，與沿翼緣方向偏心加載的試件相比，沿工字形截面腹板方向加載的試件屈服荷載、極限荷載較高，延性性能較好。

［關(guān)鍵詞］工字形截面； 型鋼混凝土短柱； 受壓性能； 試驗(yàn)研究

中圖分類(lèi)號(hào)：TU398文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2017)02-0043-05

Study on behavior of I-section steel reinforced concrete column under compression load

Zhou Zhongyi1, Cao Wanlin2, Hui Cun3

（1 Key Laboratory of Earthquake Engineering and Engineering Vibration Institute of Engineering Mechanics, China Earthquake Administration， Harbin 150080，  China； 2 College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China; 3 Shcool of Architecture and Civil Engineering, Zhongyuan  University of Technology, Zhengzhou 450007, China）

Abstract:To study the behavior of I-section steel reinforced concrete short column under compression load, five 1/20 scaled I-section steel reinforced concrete short column specimens with same geometry dimension, reinforcement and steel layout were tested under axial or eccentric (different eccentric direction , different eccentricity) monotonic loading. The failure characteristics, load-bearing capacity, stiffness and degradation process of the specimens were analyzed. The influence of eccentricity and eccentric direction on the compression behavior of I-section steel reinforced concrete short column pier was comparatively analyzed. The loading bearing capacity  of the I-section steel reinforced concrete short columns was calculated based on the test. The calculation results were well in agreement with the experimental results. The study shows that: I-section steel reinforced concrete short column has strong elastic-plastic deformation ability and high loading bearing capacity. With the increase of eccentricity,  the specimens′ loading bearing capacity reduces gradually, maximum elastic-plastic displacement increases gradually, ductility enhances gradually, stiffness degradation gradually slows down. Compared with the specimens subjected to eccentric load along the flange direction, the specimens with same eccentricity subjected to load along the web direction have higher load bearing capacity and better ductility performance.

Keywords:I-section; steel reinforced concrete short column; compression behavior; experimental study

*國(guó)家自然科學(xué)基金項(xiàng)目（51308011）,中國(guó)博士后科學(xué)基金（2013M540031）。

作者簡(jiǎn)介：周中一，博士，副研究員，Email:zhouzy@iem.ac.cn。