竖向钢筋套筒浆锚连接的预制剪力墙抗震性能非线性有限元分析

在低周反复荷载试验的基础上,对套筒灌浆连接的预制装配式剪力墙进行有限元分析,模拟分析轴压比、配筋率和配箍率等因素对剪力墙承载力和变形能力的影响。用ABACUS建立剪力墙非线性有限元模型,对比分析结果与试验结果,验证了有限模型的合理性。有限元模型可模拟实际预制剪力墙的受力性能,轴压比、配筋率、配箍率、混凝土强度对套筒灌浆连接的预制装配式剪力墙的承载力和变形能力影响较大,套筒位置、套筒数量对其影响较小,对这些参数进行合理的调整可以提高预制剪力墙的抗震性能。

Nonlinear finite element analysis on seismic performance of pre-cast shear w alls w ith vertical reinforcements spliced by grout sleeves

Based on the experiments of the reversed low cyclic loads,the pre-cast shear walls with vertical reinforcements spliced by grout sleeves are studied by nonlinear finite element analysis,and the effects of ratios of axial compression,reinforcement ratios and stirrup ratios on loading capacity and deformability of the shear wall are further investigated.The nonlinear finite element model are established by ABACUS.Verifying the rationality of the model through comparing the results of the finite element analyses and the results of experiments,and the finite element model can simulate the actual behavior of the pre-cast shear walls.The factors such as the ratios of axial compression,the reinforcement ratios and stirrup ratios of side columns and the concrete grades have a great effect on the loading capacity and deformability of the pre-cast shear walls,and the location of grout sleeve,the number of grout sleeve has a little effect on it.The appropriate adjustments of these parameters can increase the seismic performance of the shear walls.