橡胶混凝土单轴受压下的应力-应变关系  

Stress-Strain Relationship of Rubber Concrete Under Uniaxial Compression

作　　者：杨春峰[1,2] 闫佳慧 杨敏 YANG Chunfeng;YAN Jiahui;YANG Min(Shenyang University,School of Architecture and Civil Engineering,Shenyang 110044,China;Shenyang University,The Key Laboratory of Geoenvironmental Engineering,Shenyang 110044,China;CECEP Construction Engineering Design Institute Limited,Chengdu 610052,China)

机构地区：[1]沈阳大学建筑工程学院,辽宁沈阳110044 [2]沈阳大学辽宁省环境岩土工程重点实验室,辽宁沈阳110044 [3]中节能建设工程设计院有限公司,四川成都610052

出　　处：《沈阳大学学报（自然科学版）》2022年第4期322-327,共6页Journal of Shenyang University：Natural Science

基　　金：国家科技支撑计划项目(2013BAJ15B03);辽宁省兴辽英才计划课题(XLYC1802018)。

摘　　要：以配制不同橡胶粒径和体积分数的橡胶混凝土为研究对象,通过对橡胶混凝土棱柱体试块的试验研究,探索了不同配合比的橡胶混凝土的应力-应变关系基本规律,对比分析了不同橡胶粒径和体积分数的混凝土的峰值应变、原点切线弹性模量、割线弹性模量的变化规律。结果表明,橡胶混凝土的应力-应变曲线相较于普通混凝土更平缓,其峰值应变、原点切线弹性模量、割线弹性模量均降低。参考普通混凝土单轴应力-应变关系本构方程,建立了橡胶混凝土应力-应变关系曲线上升段方程,可用于理论研究与实际工程设计中。To make different rubber particle size and volume fraction of rubber concrete as the research object,through the concrete prism test blocks of rubber experiment research,explores the different proportions of rubber concrete stress-strain relationship of the basic law,comparison and analysis the different rubber particle size and volume fraction of the peak strain of the concrete,origin of tangent elastic modulus,the secant modulus of elasticity of change rule.The results show that the stress-strain curve of rubber concrete is more gentle than that of ordinary concrete,and its peak strain,tangent elastic modulus of origin and secant elastic modulus all decrease.Based on the constitutive equation of uniaxial stress-strain relationship of concrete,the equation of rising section of stress-strain relationship curve of rubber concrete is established,which can be used for reference in related research and engineering design.

关 键 词：橡胶混凝土 应力-应变关系 切线弹性模量 割线弹性模量 本构方程 

分 类 号：TU528[建筑科学—建筑技术科学]