CFRP加固受损桥墩的抗震性能试验研究

Experimental Research on Seismic Performance of Strengthening Damaged Bridge Pier with CFRP

以某城市立交工程为背景,建立桥墩缩尺模型,完成CFRP加固前后模型墩的拟静力破坏试验,分析研究模型墩加固前后的滞回曲线、骨架曲线、刚度退化曲线和能力耗散系数曲线.研究表明,采用CFRP加固受损桥墩,可有效恢复桥墩抗震性能,甚至得到提高,加固效果明显.

The experimental research is based on an interchange engineering of a city, where two scale models of bridge pier are built. Pseudo-static test is conducted to damage the scale model and strengthened the model with CFRP. The hysteretic curve, skeleton curve, stiffness degradation curve and energy dissipation coefficient curve of the scale model and strengthened model are analyzed. The experimental research shows that the seismic performance of bridge pier model can be recovered under the CFRP strengthening technol- ogy, and the capacity even can be enhanced. The strengthening effect is obvious.