炭纤维布对开洞黏土砖墙抗震加固研究

Anti-seismic strengthening of brick wall with an opening by CFRP

采用炭纤维布对开洞黏土砖墙试件进行抗震加固,通过伪静力试验对试件在低周往复荷载作用下的抗震性能进行研究,对比所得各项试验数据,分析炭纤维布加固对砖墙抗震性能的影响,并比较了不同试验方案的效果。在试验的基础上建立加固受力模型,提出了加固墙体抗震受剪承载力的计算公式。结果表明,炭纤维布加固可有效地改善砖墙抗震性能,受力模型可较好地反映加固墙体受力机理。

Several brick walls with an opening were strengthened by CFRP for anti-seismic purpose. Based on pseudo-static experiment, the anti-seismic behavior of the walls was studied. The strengthening effect of CFRP was analyzed and different strengthening methods were compared. Finally, the mechanical model of the strengthened wall was established, and the simplified formula for calculating anti-seismic shear capacity of brick wall strengthened by CFRP was presented, too. The study indicates that the anti-seismic behavior of the walls have been improved effectively by CFRP attached to them, and the simple ealculating model presented in the paper accords with the actual working state of the brick wall strengthened by CFRP.