CFRP加固RC柱在复合受力下抗扭性能的有限元分析

The finite element analysis on torsional behavior of CFRP reinforced RC columns subjected to combined action of force

采用碳纤维布纵向和环向缠绕加固压弯剪单调扭矩作用下承载力不足的钢筋混凝土柱,在轴向力存在的情况下,完成11根碳纤维加固柱的有限元模型非线性分析,包括非加固柱和加固柱的碳纤维的粘贴层数、粘贴位置和方向等作为分析参数,研究试件破坏形态,测定试件的受扭承载力以及钢筋、混凝土和碳纤维的应变变化,分析碳纤维加固后钢筋混凝土柱的受扭破坏机理。

In the axial force existence situation, the carbon fiber longitudinal and circumferential inadequate bearing capacity of reinforced concrete column in a monotonic torque under bending shear reinforcement to the wound, and inadequate performance bearing capacity, completed 11 root carbon fiber reinforced columns of the finite element model of nonlinear analysis, including non- reinforcement column and reinforcement column of carbon fiber of paste layer number, the location and orientation to be the test parameters to observe the specimen failure modes, and determination of specimens by the torsion capacity and reverse angle and steel, concrete and carbon fiber strain, and analysis of carbon fiber reinforced concrete column failure mechanism of torsion.