CFRP加固高强混凝土柱抗震性能和延性研究

Research on ductility and earthquake-resistance of high-strength concrete column confined by CFRP

通过试验对9根低周反复荷载作用下碳纤维布加固高强混凝土柱的抗震性能和延性进行了研究.分析了碳纤维布加固高强混凝土柱抗震性能的影响因素和加固效果.用有限元数值模拟方法对抗震柱加固后的力学性能进行了数值模拟.试验和有限元分析结果表明,加固柱的抗震性能和延性得到明显改善.有限元分析结果与试验结果符合较好,为碳纤维布加固高强混凝土的数值分析提供了参考.

Ductility and earthquake-resistance of nine high-strength reinforced concrete columns confined by CFRP were researched. A group of repeating low frequency lateral loads and constant axial load acted on those columns. The factors that impact the ductility and earthquake-resistance of high-strength reinforced concrete column confined by CFRP and the result of the test were principally researched. The method of finite element numerical calculation is used to simulate the mechanical behavior of high-strength reinforced concrete columns confined by CFRP. The result of finite element simulation and the result of the test show that the ductility and earthquake-resistance of confined column have an obvious improvement. The result of finite element simulation is coincident with that of the test, which provides a reference for the numerical analysis of high-strength concrete confined by CFRP.