论文部分内容阅读
对2个预制装配式和1个现浇短肢剪力墙试件进行了低周反复荷载试验。与现浇试件对比,掌握预制装配式剪力墙的强度、位移延性及耗能能力等。试验结果表明:装配式试件破坏形态与现浇试件明显不同,水平拼缝为薄弱部位,变形集中。上部预制墙体基本保持完好,破坏主要集中在下部墙体,并表现为剪切破坏,与理论分析一致。有限元分析表明增加装配式短肢剪力墙中部连接钢筋,可增加水平拼缝混凝土接触面面积,减小其剪应力,从而有效改善墙体受力性能,提高墙体的承载能力和变形能力。
Low-cycle repeated load tests were carried out on two prefabricated and one cast-in-situ short-limb shear wall specimens. Compared with the cast-in-place test, grasp the strength of the prefabricated shear wall, displacement ductility and energy consumption capacity. The experimental results show that the failure mode of the fabricated specimen is obviously different from that of the in-situ test specimen, the horizontal joint is the weak part and the deformation is concentrated. The upper prefabricated walls remained basically intact, the damage mainly concentrated in the lower wall and showed the shear failure, consistent with the theoretical analysis. Finite element analysis shows that the increase of the connecting steel bars in the middle of the assembled short-limbed shear wall can increase the contact area of horizontal concrete and reduce the shear stress, so as to effectively improve the performance of the wall and improve the carrying capacity and deformation capacity of the wall .