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采用简化的双线性纤维增强聚合物(FRP)约束混凝土应力-应变曲线模型,对地震荷载作用下的混杂FRP约束完好混凝土圆柱进行了近似的截面延性分析,再从钢筋有效截面面积的减少、钢筋力学性能的降低和钢筋-混凝土黏结界面的弱化三个方面考虑钢筋腐蚀对截面延性的影响,建立了计算混杂FRP加固腐蚀混凝土圆柱潜在塑性铰区延性的简单适用模型,并编写了无需迭代的混杂FRP加固腐蚀混凝土柱基于位移性能的抗震设计程序.
The simplified bilinear fiber reinforced polymer (FRP) constrained concrete stress-strain curve model is adopted to analyze the approximate ductility of concrete columns under the action of earthquake loads. From the reduction of effective cross-sectional area of steel bar, Reduce the mechanical properties of reinforced concrete and weaken the bond between steel and concrete, consider the influence of steel corrosion on the ductility of the section, and establish a simple and applicable model for calculating the ductility of the potential plastic hinge of reinforced concrete columns strengthened with hybrid FRP. Earthquake-resistant design program based on displacement performance of hybrid FRP reinforced concrete columns.