纤维增强聚合物约束混凝土柱轴压本构模型研究新进展

PROGRESS IN STUDIES OF THE CONSTITUTIVE MODEL OF FRP-CONFINED CONCRETE COLUMNS

较全面总结了纤维增强聚合物约束混凝土的本构模型最新进展,分析了各类模型的理论基础、特点、存在的问题,探讨了纤维增强聚合物约束混凝土轴压强度与变形规律、破坏机制等,总结了影响本构模型的主要影响因素,如约束应力的计算、纤维增强聚合物实际破坏应变值等,为今后对本构模型比较分析提供了基本框架.

This paper reviews the latest progress in studies of the constitutive models of the FRP（fiber reinforced polymer）-confined concrete,and analyzes their theoretical basis, the characteristics and the problems of existing models, focusing on the axial compressive strength and deformation, the failure mechanism of the FRP-confined concrete, and the main factors affecting the constitutive models, such as the FRP restraint stress and the actual strain at the failure state. A basic framework for comparative analysis of constitutive models in future is suggested.