CFRP加固钢绞线-钢筋混凝土剪力墙性能

Performance of Concrete Shear Wall Reinforced by Steel Strand and Steel Bar and Confined by CFRP

为了探讨采用碳纤维布加固塑性铰区对钢绞线−钢筋混凝土剪力墙抗震性能的影响,制作了2个钢绞线−钢筋混凝土剪力墙试件,通过拟静力加载试验,研究了碳纤维布加固塑性铰区的钢绞线−钢筋混凝土剪力墙的抗震性能及其可恢复性能。研究结果表明:采用碳纤维布加固剪力墙塑性铰区可以有效提高钢绞线-剪力墙的承载能力和侧向变形能力,而且在高轴压比作用下对提高其承载能力效果更好,滞回环更加饱满,耗能能力有一定的提高,但对其残余变形没有明显影响。

In order to explore the feasibility of using carbon fiber reinforced plastics(CFRP)in the plastic hinge to control the failure mode and further improve the seismic performance of concrete shear wall reinforced by steel strand and steel bar,two specimens of concrete shear wall reinforced by steel strand and steel bar were made.The seismic and resilient performance of concrete shear wall reinforced by steel strand and steel bar and confined by CFRP in plastic hinge was studied by quasistatic loading test.The results show that the plastic hinge of concrete shear walls reinforced by steel strand and steel bar and confined by CFRP can effectively improve both bearing capacity and lateral deformation capacity,and the effect of improving its bearing capacity is better under high axial compression ratio,the hysteretic loops of the specimens confined by CFRP are fuller,and the energy dissipation capacity is improved to a certain extent,but it has no obvious effect on its residual drift.