（东华理工大学建筑工程学院， 南昌 330013）

［摘要］为了研究型钢部分包裹再生混凝土短柱（强轴）的偏心受压性能，设计了6个试件并进行静力加载试验，不同试件的主要变化参数为再生粗骨料取代率、偏心率。通过试验获得了试件的破坏形态、承载力、荷载-挠度曲线、荷载-应变曲线，采用国外相关规范的计算方法对型钢部分包裹再生混凝土短柱（强轴）的偏心受压承载力进行计算，并与试验结果进行了对比分析。研究结果表明：试件的极限承载能力随着再生粗骨料取代率和偏心距的增大而减小；根据规范ANSI/AISC 360-10计算的型钢部分包裹再生混凝土短柱（强轴）的偏心受压承载力与试验结果较为吻合。

［关键词］部分包裹再生混凝土； 短柱； 偏心受压； 承载力

中图分类号：TU317， TU398+.9 文献标识码：A文章编号：1002-848X(2019)08-0076-04

Experimental study on mechanical behavior of section steel  partially encased recycled aggregate concrete short columns (strong axis) subjected to eccentric compression

Liang Jiongfeng, Jiang Tao, Wang Jianbao, Chang Yi, Yang Wenrui

(Faculty of Civil & Architecture Engineering, East China Institute of Technology, Nanchang 330013, China)

Abstract:In order to study the mechanical behavior of section steel  partially encased recycled aggregate  concrete short columns (strong axis) subjected to eccentric compression, six specimens were designed and the static loading tests were carried out. The main variation parameters of different specimens were recycled coarse aggregate replacement rate and load eccentricity ratio. The failure patterns, bearing capacity, load-displacement curves and load-strain curves were obtained by tests. The bearing capacity of partially encased recycled aggregate concrete short columns (strong axis) subjected to eccentric compression was calculated by the calculation method of existing foreign codes, and the calculation results were analyzed and compared with the experimental results. The results show that the bearing capacity of the specimen decreases with the increase of recycled coarse aggregate replacement percentage and load eccentricity ratio. The bearing capacity of partially encased recycled concrete short columns (strong axis) subjected to eccentric compression calculated according to the code ANSI/AISC 360-10 is in good agreement with the experimental results.

Keywords:partially encased recycled aggregate concrete; short column; eccentric compression; bearing capacity

*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（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。