区域约束混凝土结构力学模型

区域约束混凝土结构拓展了约束混凝土结构的应用范围,使得约束混凝土能适用于轴心受压、偏心受压、受弯、受剪及受扭等受力形态。根据约束为“纵筋、箍筋及核心混凝土三者有机结合,形成不可分割的有机体”的观点,提出了以约束系数为基本变量的“约束体”概念,结合构件受力特点建立了区域约束混凝土构件在不同受力形态下的力学模型,给出了相应的计算公式,为区域约束混凝土结构的推广使用奠定了基础。

Regional confined concrete(RCC)structure expands the scope of application of confined concrete structure,so that confined concrete can be applied to axial compression,eccentric compression,bending,shear and torsion and other stress forms.According to the viewpoint that the constraint is an inseparable organism formed by the organic combination of"longitudinal reinforcement,stirrups and core concrete",the concept of"constraint body"with constraint coefficient as the basic variable is put forward.According to the mechanical characteristics of members,the mechanical models of regionally confined concrete members under different stress forms are established,and the corresponding calculation formulas are given,which lays a foundation for the popularization and application of regional confined concrete structures.