对称双肢短肢剪力墙的低周反复荷载试验研究

介绍了两榀对称双肢短肢剪力墙的拟静力试验,研究了短肢剪力墙的破坏形态、滞回特性和整体性系数对其弹塑性性能的影响。试验结果表明,短肢剪力墙是一种强肢弱梁型的联肢墙,连梁的屈服先于墙肢的屈服,且连梁屈服后,由于内力重分布的作用,使材料的性能得到充分的发挥。短肢剪力墙结构具有较好的延性和耗能能力。对于层数、层高、墙肢尺寸、材料及配筋都相同的短肢剪力墙,其承载能力随整体性系数的增加而增加,而延性却随之减小。

Low-cycle loading experiment study on symmetric double short-pier shear walls

A low-cycle loading experiment for two specimens of symmetric double short-pier shear wall was carried out, and the failure pattern, hysteretic response, and the effect of integrative coefficient on the elastoplastic performances were studied. The results indicated that short-pier shear wall is a type of coupled wall with strong piers and weak beams; the beams yield earlier than piers, and moreover, the material capacity of the coupling beams may be fully used because of the internal stress redistribution in the beams after their yielding. Therefore, the short pier shear wall structures have well ductility and ability of energy dispassion. The loading capability increases with the increase of integrative coefficient while the ductility decreases on condition that the number of stories, story height, dimension of piers, material and reinforcement are the same.