配筋混凝土轴向拉伸试验条件下的应力-应变关系研究  

Study of Stress-strain Relationship of Reinforced Concrete under Axial Tensile Test

作　　者：吴海林[1] 朱良才[1] 冉红洲 崔福冰 郑志强[1] Wu Hailin Zhu Liangcai Ran Hongzhou Cui Fubing Zheng Zhiqiang(College of Hydraulic ＆ Environmental, China Three Gorges Univ. ,Yichang 443002, Chin)

机构地区：[1]三峡大学水利与环境学院,湖北宜昌443002

出　　处：《三峡大学学报（自然科学版）》2017年第5期48-52,共5页Journal of China Three Gorges University：Natural Sciences

基　　金：国家自然科学基金项目(51379107)

摘　　要：混凝土应力-应变关系是混凝土构件承载力、变形分析及裂缝研究的重要参数.本文设计制作了配筋混凝土试件开展配筋混凝土试件轴向拉伸试验,通过分离钢筋与混凝土分别承受的荷载,获得不同配筋率下的混凝土轴向拉伸应力-应变关系曲线,分段拟合得到对应的应力-应变曲线方程,并探讨了配筋率对混凝土轴向拉伸应力-应变关系曲线的影响规律.Concrete stress-strain curve is an important parameter of concrete component bearing capacity, de- formation analysis and crack research. In this paper, reinforced concrete specimens were designed and pro- duced to carry out the tensile test of reinforced concrete specimens, so as to get the concrete axial tensile com- plete Stress-Strain curve in different reinforcement ratios by separating loads between steel and concrete, the axial tensile stress-strain curves of concrete under different reinforcement ratios, and then the corresponding stress - strain curve equation is obtained by piecewise fitting. Meanwhile, the influence of reinforcement ratio on axial tensile stress - strain curve of concrete is discussed.

关 键 词：钢筋混凝土 轴向拉伸试验 应力-应变全曲线 数学模型 

分 类 号：TU502.6[建筑科学—建筑技术科学]