摘要
后张无粘结预应力装配式短肢墙有直接装配式和混合装配式两种,本文对两种装配式短肢墙的力学参数ζ和α进行了分析研究,结果表明,该种结构易实现强肢弱梁的良好耗能机制,结构的弹性刚度仅与ζ和α有关。对两榀采用直接装配式和混合装配式的后张无粘结预应力装配式短肢墙进行试验研究,试验结果验证了上述观点,并得出后张无粘结预应力装配式短肢剪力墙在地震作用下残余变形较小,变形集中于连接区域,易于修复的结论。
Unbonded post-tensioned precast short-pier wall contains the direct assembly short pier-wall and the hybrid assembly short-pier wall. The mechanical parameters ξ and α of unbonded post-tensioned precast short-pier wall are analyzed in this paper. The analytical results show that the type of structures can easily realize the good mechanism of energy dissipation and the initial elastic stiffness of the strctures only depends on the two parameters. Two specimens of unbonded post-tensioned precast short-pier wall are tested. One is the the direct assembly short-pier wall and the other is the hybrid assembly short-pier wall. The results of the experiments verify the issue above, and further indicate that the unbonded post-tensioned precast short-pier wall can be easily rehabilitated due to the small residual deformation of the structures under earthquake and concentrating around the connection zones.
出处
《工程抗震与加固改造》
北大核心
2009年第1期70-73,共4页
Earthquake Resistant Engineering and Retrofitting
关键词
力学参数ζ和α
短肢剪力墙
无粘结
后张预应力
耗能能力
残余变形
mechanical parameters ξ and α
short-pier wall
unbonded
post-tensioned
ability of energy dissipation
residual deformation
