CFRP加固高强混凝土的本构模型研究

利用主动侧限混凝土柱的轴向压缩本构模型,结合多轴应力下的混凝土破坏准则,建立了CFRP加固高强混凝土的轴向压缩本构关系,并与CFRP加固高强混凝土柱的轴心受压试验结果进行对比分析.结果表明:采用理论模型计算的碳纤维布约束高强混凝土的应力-应变曲线与试验曲线吻合较好.

Study on Constitutive Model of High-strength Concrete Confined by CFRP

By use of the constitutive model of axial compression of active confinement concrete columns and the failure criterion of concrete under multi-axial stress, the theoretical expression of stress-strain relationships of axial compression for the passive confinement concrete columns is derived. The theoretical curves were compared with the experimental curves, which were obtained by the tests of CFRP confining high-strength concrete columns. The results indicate that the theoretical curves are in good agreement with the experimental curves.