轴心受压FRP约束混凝土柱应力-应变关系曲线计算

本文采用多轴应力下Ottosen混凝土应力 应变关系及Ottosen破坏准则 ,以核心混凝土与FRP约束层变形协调为边界条件 ,通过计算机编制程序对FRP约束混凝土轴压短柱应力 应变关系曲线进行了计算 ,并与试验结果进行了对比。以往国内外大部分关于FRP约束混凝土的计算方法都主要以试验为基础 ,将试验得出的应力 应变关系曲线用数学公式进行拟合 ,然后通过试验数据来确定式中的参数。本文方法主要是通过理论推导得出的 ,这不同于以往的半经验性计算方法

Stress-strain Relationship Curve of Frp-Confined Concrete Columns Subjected To Axial Compression

The stress-strain relationship curve of FRP-confined concrete columns is calculated through computer process in the boundary condition of corresponding distortion between core concrete and FRP confining layer by the Ottosen failure criterion and stress-strain relationship of concrete in triaxial states,and the calculation result is compared with that of experiment.Most of the former calculate methods about FRP at home and abroad are based on experimentation.And then stress-strain relationship curve of FRP-confined concrete is simulated by formulation.The method in this article is mainly obtained by theory,which is different from most of former semi-experience calculate methods.