FRP加固钢筋混凝土桥墩的抗震性能分析

Earthquake Resistant Behavior of Reinforced Concrete Piers Strengthened with FRP

本文利用通用有限元程序建立了FRP加固钢筋混凝土桥墩的数值分析模型,对FRP加固钢筋混凝土桥墩的抗震性能进行了数值计算和分析。计算和分析结果表明,用FRP加固可以明显改善钢筋混凝土柔性墩的抗震性能;与全包裹相比,用FRP对桥墩墩底进行部分包裹可以更有效的利用FRP的强度,更为经济适用。

The simulated analysis model of reinforced concrete piers is established by using FEM program. The earthquake resistant behaviors are numerically simulated and analyzed. The analysis and simulating results show that the earthquake resistant behaviors of flexible reinforced concrete piers can improve obviously by FPR wrapping the pier. Comparing with wrapping the whole pier, the strength of the FRP can be utilized more efficiently by wrapping part of the pier above the bottom. So, wrapping part of the pier is more practical and economical.