自密实混凝土与角钢联合加固混凝土柱轴心受压承载力试验研究  

Experimental research of axial compression bearing capacity on RC columns strengthened by steel and self-compacting concrete

作　　者：胡强[1] 王痛快 贾松林[1] 吴辉琴[1] 况哲阳 罗臻[1] Hu Qiang;Wang Tongkuai;Jia Songlin;Wu Huiqin;Kuang Zheyang;Luo Zhen(College of Civil and Architecture Engineering,Guangxi University of Science and Technologyy,Liuzhou 545006,China)

机构地区：[1]广西科技大学土木建筑工程学院,广西柳州545006

出　　处：《建筑科学》2020年第7期45-52,共8页Building Science

基　　金：广西教育厅中青年教师基础能力提升项目(KY2016YB258,2018KY0316);广西科技大学博士基金项目(校科博17Z12)。

摘　　要：提出了自密实混凝土与型钢联合加固混凝土柱的加固方法,对16个试件进行了静力加载试验,研究了型钢尺寸与缀板间距等因素对加固后混凝土柱的轴心受压承载力的影响。研究结果表明:采用该方法加固的混凝土柱轴心受压承载力显著提高;自密实混凝土能够将型钢和混凝土柱有效结合,使其协同工作;增大型钢截面面积与减小缀板间距均能有效提高柱的轴心受压承载力。最后,建立了联合加固混凝土柱轴压承载力计算公式。An improved reinforced method by steel filled with self-compacting concrete is proposed.Static loading experiments for 16 specimens are carried out to study the influences of steel and batten plates spacing on axial compression bearing capacity of the concrete columns reinforced by the proposed method.The results show that axial compression bearing capacity increases significantly;steel and concrete column can be effectively united by self-compacting concrete;the increase of area of steel and the decrease of batten plates spacing can effectively increase axial compression bearing capacity of the reinforced columns.And finally,the calculation formulas for axial compression bearing are proposed.

关 键 词：混凝土柱 加固 自密实混凝土 型钢 轴心受压承载力 

分 类 号：TU398.9[建筑科学—结构工程]