Study on Flexural Behavior Evaluation of Reinforced Concrete Columns with Ultra High Performance Concrete

为了模拟超高性能混凝土(UHPC)加固混凝土柱的受弯性能，通过6个试件的偏心受压试验，测定了UHPC的轴向应力-应变曲线。试验变量为横向配筋量。从超高性能混凝土的轴向应力-应变曲线可以看出，横向配筋的约束效应对最大压应力、最大压应力下的压应变有影响。约束效果与横向配筋量有关，但差异很大。

In order to simulate flexural behavior of reinforced concrete columns with ultra high performance concrete (UHPC), axial stress-strain curves of UHPC were measured from eccentric compressive loading test with six specimens. Experimental variable was amount of transverse reinforcement. From the axial stress-strain curves of UHPC, it was clarified that confinement effect by transverse reinforcement had influence on maximum compressive stress, compressive strain at maximum compressive stress. The confinement effect depended on the amount of transverse reinforcement, but varied widely.