- 摘 要
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（廣西科技大學土木建筑工程學院， 柳州 545006）
［摘要］為探究型鋼混凝土構件受拉性能，結合結構大廳現(xiàn)有500t壓力機，自行研發(fā)一套拉壓轉換裝置。對12根型鋼混凝土受拉構件進行單調加載試驗研究。通過改變型鋼腹板厚度、型鋼翼緣厚度、配鋼率、偏心距以及配筋率等主要參數(shù)。對試件的承載力、側向位移、裂縫的情況進行了參數(shù)影響分析。試驗結果表明，偏心受拉試件偏心距越大，試件屈服荷載及極限荷載下降情況越明顯，且側向位移及破壞裂縫寬度越大； 在軸心受拉試件中，型鋼配鋼率及腹板、翼緣厚度對試件的屈服荷載、極限荷載影響明顯，對于偏心受拉試件影響不大； 而配筋率對承載力、側向位移、裂縫寬度影響甚微。
［關鍵詞］型鋼混凝土構件； 軸心受拉； 偏心受拉； 參數(shù)影響分析； 配鋼率； 偏心距； 配筋率
中圖分類號：TU398， TV355文獻標識碼：A文章編號：1002-848X(2020)17-0091-08
Experimental study on axial and eccentric tensile properties of steel reinforced concrete columns
ZHANG Peng, SHEN Minhe, DENG Yu, SUN Fei
(Department of Civil Engineering and Architecture， Guangxi University of Science and Technology， Liuzhou 545006， China)
Abstract:In order to explore the tensile properties of steel reinforced concrete columns, combined with the existing 500t press in the structure hall, a set of pull-down conversion device was developed. The monotonic loading test of 12 steel reinforced concrete columns was carried out. The main parameters, such as the thickness of the steel web, the thickness of the flange, the steel ratio, the eccentric distance and the ratio of reinforcement, were studied. The parameters of the bearing capacity, lateral deflection and fracture of the specimens were analyzed. The experimental results show that the greater the eccentricity of the slant component, the more obvious the decrease of the yield load and the ultimate load, and the greater the lateral deflection and the crack width. In the axial tension component, the steel ratio and the thickness of the web and flange have obvious influence on the yield load and ultimate load, which has little influence on those of the partial tensile components. However, the ratio of reinforcement to bearing capacity, lateral deflection and crack width has little effect.
Keywords:steel reinforced concrete column; axial tension; eccentric tension; parametric impact analysis; steel ratio; eccentric distance; ratio of reinforcement
*國家自然科學基金資助項目（51768008），中國博士后科學基金項目（2017M613273XB），廣西自然科學基金項目(2015GXNSFAA139263）。
作者簡介：張鵬，博士，教授，Email:gxutzp@126.com； 通信作者：沈民合，碩士研究生，Email: 1437867318@qq.com。
