摘要
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。
A low cyclic reversed load test was carried out on two new precast concrete （NPC） and one cast-in-situ short-leg shear wall specimens. Compared with the cast-in-situ specimen, the strength, stiffness, ductility and energy dissipation of NPC specimens were grasped. The test result shows many contents. The failure mode of NPC specimen is obviously different from that of the cast-in-situ one. The horizontal joint is the weak part with a concentrated deformation. The upper precast shear wall remains in a good condition and the failure presented as shear failure is concentrated in the lower precast shear wall. The finite element analysis shows that： the increase of the connect reinforcements of NPC specimens can increase the contact area of concrete in a horizontal joint, reduce the shear stress, and effectively improve the mechanical behavior of NPC shear wall and enhance its carrying capacity and deformation caoacity.
出处
《工程力学》
EI
CSCD
北大核心
2013年第5期125-130,共6页
Engineering Mechanics
基金
国家科技支撑计划项目(2011BAJ10B03)
关键词
预制混凝土
短肢剪力墙
低周反复荷载
试验
有限元分析
precast concrete
short-leg shear walls
low-cyclic reversed load
test
finite element analysis
