（1东华理工大学建筑工程学院， 南昌 330013； 2 杭萧钢构（江西）有限公司， 南昌 330013）

［摘要］对型钢部分包裹再生混凝土短柱进行了轴压试验，考虑再生粗骨料取代率、混凝土强度、长细比等为变化参数，对其进行静力试验。结果表明：型钢与再生混凝土具有良好的协同工作能力；该组合柱在轴压下的受力过程可分为弹性阶段、弹塑性工作阶段和破坏阶段；以型钢翼缘屈曲、再生混凝土压碎为破坏形式。

［关键词］型钢部分包裹再生混凝土短柱； 轴压试验； 混凝土取代率； 长细比

中图分类号：TU317， TU398+.9 文献标识码：A文章编号：1002-848X(2019)08-0072-04

Experimental study on mechanical properties of section steel partially encased recycled aggregate concrete short columns under axial compression

Liang Jiongfeng1, Zhang Guangwu1, Hu Minghua1,  Gao Jinghe1,  Xiong Zheng1, Wu Huaying2

(1 Faculty of Civil & Architecture Engineering,  East China Institute of Technology,  Nanchang 330013,  China；2 Jiangxi Hangxiao Steel Structure Co., Ltd.,  Nanchang 330013,  China)

Abstract:Axial compression experiments were carried out on section steel partially encased recycled aggregate concrete short column. Static tests were carried out considering recycled coarse aggregate replacement rate, concrete strength and slenderness ratio. The results show that the section steel and recycled concrete have good cooperative working ability; the mechanical process of the composite column under axial compression can be divided into elastic stage, elastic-plastic stage and failure stage; the failure mode is the buckling of the steel flange and the crushing of recycled concrete.

Keywords:section steel partially encased recycled aggregate concrete short column; axial compression experiment; concrete replacement rate; slenderness ratio

*国家自然科学基金资助项目（51368001），江西省杰出青年人才计划项目（20162BCB23051），江西省重点研发计划项目（20161BBG70084，20161BBH80045），江西省教育厅科技项目（GJJ150586，GJJ14497），中国博士后基金资助项目（2014M562132），中南大学博士后基金资助项目（134381），江西省新能源工艺与装备工程技术研究中心开放基金项目（JXNE-2014-08）。

作者简介：梁炯丰，博士，副教授，硕士生导师，Email：jiongfeng108@126.com。