LYP波纹双钢板混凝土组合剪力墙抗震性能研究

Study on Seismic Performance of LYP Corrugated Double-Plate Concrete Composite Shear Walls

摘要:

为研究低屈服点波纹双钢板混凝土组合剪力墙抗震性能,运用ABAQUS构建有限元模型。以钢板形式(波纹钢板和平钢板)、钢材强度等级(低屈服点钢材和普通钢材)为主要参数进行对比研究,结果表明,波纹钢板试件相比平钢板试件屈服荷载最高提升了11.28%,峰值荷载最高提升了11.29%,延性最高提升了18.68%,并且波纹钢板试件的刚度退化较为平缓,耗能能力更强,抗震性能更优;低屈服点钢材试件相比普通钢材试件,虽然更早达到屈服,承载能力有一定下降,但延性得到极大提升,最高提升67.63%,最低提升44.22%,耗能表现更为优异,抗震性能更好。结构的改变和材料的改变均能提高试件的抗震性能,且两者结合更能使试件的抗震性能得到更大提升。

Abstract:

To study the seismic performance of low-yield point corrugated double-layer steel plate concrete composite shear walls, a finite element model was constructed using ABAQUS. The main parameters considered were the form of the steel plates (corrugated steel plates and flat steel plates) and the strength grade of the steel (low-yield point steel and ordinary steel). The results showed that the yield load of the corrugated steel plate specimens was 11.28% higher than that of the flat steel plate specimens, the peak load was 11.29% higher, and the ductility was 18.68% higher. Moreover, the stiffness degradation of the corrugated steel plate specimens was more gradual, and their energy absorption capacity was stronger, resulting in better seismic performance. Compared with the ordinary steel specimens, the low-yield point steel specimens reached yield earlier and had a certain decrease in bearing capacity, but their ductility was greatly improved, with the maximum improvement being 67.63% and the minimum improvement being 44.22%. Their energy absorption performance was more outstanding, and their seismic performance was better. In other words, both the structural change and the material change can improve the seismic performance of the specimens, and the combination of the two can achieve a greater improvement in the seismic performance of the specimens.