轴心受拉构件混凝土有效受拉面积的试验研究  

Experimental Research on Effective Tensile Area of Reinforced Concrete Axial Tension Members

作　　者：李金昌 韩进舟 李平先[1] 韩冲 LI Jin-chang;HAN Jin-zhou;LI Ping-xian;HAN Chong(School of Water Conservancy Engineering,Zhengzhou University,Zhengzhou 450001,China;CGCOC Water and Electric Engineering Co.,Ltd.,Zhengzhou 450016,China;Jianye Housing Group(China)Co.,Ltd.,Zhengzhou 450000,China)

机构地区：[1]郑州大学水利科学与工程学院,河南郑州450001 [2]中地海外水利水电工程有限公司,河南郑州450016 [3]建业住宅集团(中国)有限公司,河南郑州450000

出　　处：《混凝土与水泥制品》2021年第10期21-24,共4页China Concrete and Cement Products

基　　金：清华大学水沙科学与水利水电工程国家重点实验室开放基金项目(sklhse-2018-C-04)。

摘　　要：通过10根中心配置HRB400级钢筋的混凝土棱柱体构件轴心受拉试验,并结合已有的11根配置HRB335级钢筋的相同构件试验结果,探讨了混凝土表面应变的变化以及钢筋级别对轴心受拉构件混凝土有效受拉面积的影响。结果表明:在轴心受拉情况下,配置HRB335钢筋和配置HRB400钢筋的混凝土有效受拉面积略有差异;对配置HRB400和配置HRB335钢筋的构件,混凝土有效受拉面积可分别按半径为7.3d(d为钢筋直径)和7.4d的圆形面积计算,或分别按边长为6.5d和6.6d的正方形面积计算。The axial tension behaviors of ten prism members with HRB400 steel bars and eleven prism members with HRB335 steel bars were investigated,and the effect of concrete strain and steel grade on the effective tensile cross-sectional area was explored.The results indicate that the effective tensile cross-sectional area of the concrete with HRB400 steel bar has a slightly different with that of the concrete with HRB335 steel bar under the condition of axial tension.A circular area with a radius of 7.3d(d is the diameter of the steel bar)or a 7.4d and a square area with a side length of 6.5d or a 6.6d are proposed respectively based on the experimental data with HRB400 or HRB335 steel bar.

关 键 词：混凝土有效截面面积 钢筋级别 轴心受拉构件 钢筋直径 

分 类 号：TU528[建筑科学—建筑技术科学]