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对碳纤维(CFRP)布约束混凝土方形柱进行水平往复荷载作用下的非线性有限元计算模拟,并采用试验结果进行了有限元计算方法准确性的验证。通过对有限元计算结果中碳纤维布、箍筋、混凝土的应力应变的分析,探讨了碳纤维布对RC柱在往复水平荷载作用下的增强机理。研究了纤维布缠绕高度、轴压比和纤维布缠绕层数对RC矩形柱极限承载能力和位移延性的影响,可对具体的FRP工程应用提供参考和依据。
The finite element method is used to simulate the nonlinear behavior of CFRP-constrained square columns subjected to horizontal reciprocating loads. The accuracy of the finite element method is verified by the experimental results. Through the analysis of the stress and strain of CFRP, stirrup and concrete in the calculation results of finite element method, the reinforcing mechanism of RC columns under the reciprocating horizontal load is discussed. The influence of the winding height of fiber cloth, the axial compression ratio and the number of wound layers of fiber cloth on the ultimate bearing capacity and displacement ductility of RC rectangular columns were investigated. It could provide references for the concrete FRP engineering application.