约束混凝土的应力-应变分析模型

众所周知，混凝土的强度和延性在很大程度上取决于侧向约束水平。约束的刚度和基本性能（弹性，弹塑性等）是影响混凝土性能的重要因素。本研究中，建立了一个新的简单的约束混凝土模型来描述三向受压状态下混凝土的轴向和侧向变形特性。定义约束混凝土的轴向应力-应变关系为非线性曲线的弹性区。采用常失效能量准则定义了应力-应变关系曲线的下降区域。

An Analytical Model for Stress-Strain Behavior of Confined Concrete

It is well known that the strength and ductility of concrete are highly dependent on the level of confinement provided by the lateral reinforcement. The stiffness and the constitutive behavior of the confining reinforcement (elastic, elastoplastic, etc.) are the important factors affecting the behavior of concrete. In this study, a new simple confined concrete model is developed for describing the axial and lateral deformation characteristics of concrete under triaxial compression. The stress-strain relatio...