短肢剪力墙结构顶层端节点的空间受力研究

在两个短肢剪力墙无粘结预应力楼盖子空间结构模型的低周反复加载试验研究基础之上,本文通过对短肢剪力墙结构顶层端节点在试验试件的破坏失效结果分析,以及节点区钢筋的应变分析,"L"型短肢剪力墙顶层端节点在水平加载过程中从二维平面节点受力状态逐渐转变为空间节点受力状态的受力模式,空间节点受力比二维平面节点受力复杂得多,空间节点比平面节点抗震性能更有利,因此在工程设计中建筑物角部应尽可能采取"L"形墙肢的建议。

Spatial Analysis on the Behavior of Top Story Knee Joint of Concrete Structures with Short Shear Wall

This paper,based on revered cycle loading tests on the two specimens of concrete structures with short shear wall and unbonded tendons prestressed slab,analyzes the spatial analysis behavior of this concrete structure system under cyclic loading by the damage in the test specimen failure results analysis and strain analysis of reinforced node area.L-type short shear wall top story knee joints in the level of loading from two-dimensional plane stress state is gradually transformed into state space joint of the force model.Spatial mode by force than plane seems more complex than the plane mode,and seismic performance seem more favorable.so at the end of the paper,a suggestion is made to advercate that in building designs,the corner ＂L＂-shaped wall should be greatly recommended.