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首页> 外文期刊>International Journal of Concrete Structures and Materials >Experimental Investigation on Seismic Resistance of RC Shear Walls with CFRP Bars in Boundary Elements
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Experimental Investigation on Seismic Resistance of RC Shear Walls with CFRP Bars in Boundary Elements

机译：RC剪力墙在边界元件中具有CFRP钢筋抗震性能的试验研究

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摘要

Experimental investigation on seismic performance of RC shear walls reinforced with CFRP bars in boundary elements to enhance the resilience was presented which is expected for stable resistance capacity and small residual deformation. Six RC shear walls reinforced with CFRP bars as longitudinal tensile materials in boundary elements were tested under reversed cyclic lateral loading while subjected to constant axial compression with different axial load ratios of 0.17, 0.26 and 0.33, respectively. Two forms of stirrups were used for each axial load ratio, which were rectangular and circular stirrups in boundary elements. A reference specimen, ordinary RC shear walls, was also introduced to certify the excellence of CFRP bars. The test results indicated that the walls utilizing CFRP bars had small residual deformations and residual crack widths. Lower crack propagation height and larger concrete crushing region, bearing capacity and equivalent viscous damping coefficient (EVDC) could be observed with the increase of axial load ratios. The effects of stirrup forms on experimental results had a relation to the axial load ratio. When the axial load ratio was small, the shear walls with circular stirrups had better energy dissipation than that with rectangular stirrups at a given drift level, while the cumulative energy dissipation (CED) were similar. With the increase of axial load ratio, the walls exhibited similar energy dissipation at the same drift level, however, the shear walls with rectangular stirrups had larger CED.
机译：提出了利用CFRP棒加强了RC剪切壁的抗震性能的实验研究，以增强弹性，预期稳定的阻力能力和小残余变形。用CFRP棒加强的六个RC剪切壁作为边界元件中的纵向拉伸材料在反向循环横向载荷下进行测试，同时经受0.17,0.26和0.33的不同轴向载荷比的恒定轴向压缩。用于每个轴向载荷比的两种形式的搅拌器，其在边界元件中是矩形和圆形搅拌器。还引入了参考标本，普通的RC剪力墙，以证明CFRP酒吧的卓越。测试结果表明，利用CFRP棒的壁具有小的残余变形和残留裂缝宽度。通过增加轴向载荷比率，可以观察到较低裂缝传播高度和较大的混凝土破碎区域，承载能力和等效粘性阻尼系数（EVDC）。 STORTUP形式对实验结果的影响与轴向载率有关。当轴向载荷比小时，具有圆形搅拌器的剪切壁具有比给定漂移水平的矩形搅拌器更好的能量耗散，而累积能量耗散（CED）是相似的。随着轴向载荷比的增加，壁在相同的漂移水平上表现出类似的能量耗散，然而，具有矩形搅拌器的剪切壁具有更大的CED。

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