夹板木剪力墙的抗侧力性能试验

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振动与冲击 ›› 2016, Vol. 35 ›› Issue (19) : 94-100.

论文

夹板木剪力墙的抗侧力性能试验

郑维，陆伟东，刘伟庆，刘杏杏

作者信息 +

Racking performance of sheathing sandwiched wood shear walls

ZHENG Wei, LU Wei-dong, LIU Wei-qing, LIU Xing-xing

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文章历史 +

摘要

为研究不同构造形式对夹板木剪力墙抗侧力性能的影响，对8片夹板木剪力墙试件进行了水平抗侧力试验，其中1片为单调加载，7片为低周反复加载，试件参数包括墙肢长度、墙骨柱间距、墙面板厚度以及钉间距。根据试验现象和由试验数据对比分析了各试件的破坏模式及抗剪强度、抗侧刚度、变形能力、刚度退化和耗能等性能指标，结果表明，端部墙骨柱在抗拔锚栓顶部的受拉断裂是导致夹板木剪力墙整体破坏的最主要原因；墙面板的厚度决定了边缘墙骨上钉连接的破坏模式，是影响夹板木剪力墙抗侧刚度和极限位移的重要因素；合理减小钉间距能明显提升墙体的强度、刚度及耗能，但不宜小于75/150 mm，否则易造成顶梁板和底梁板的劈裂破坏；墙骨柱间距及墙肢长度的变化则对其抗侧力性能的影响较小。夹板木剪力墙具有优异的抗侧力性能，可应用在更高抗侧力需求的中高层木结构建筑中。

Abstract

In order to evaluate the influence of different experimental variables on the racking performance of sheathing sandwiched wood shear walls, one monotonic test and seven reversed cyclic tests were carried out. Four typical experimental variables were considered, including wall length, stud spacing, sheathing thickness and nails spacing. The performance was evaluated and compared in terms of shear strength, lateral stiffness, ultimate displacement, stiffness degradation and energy dissipation. The results showed that the tensile fracture of end stud which appeared at the top of hold-down was the finial damage pattern of sheathing sandwiched wood shear walls. The sheathing thickness which determined the failure modes of nail connections on the edge frame had significant effects on the lateral stiffness and ultimate displacement of the walls. Appropriate decrease in nail spacing could increase the shear strength and lateral stiffness of the walls, but the nail spacing should be larger than 75/150 mm to avoid the splitting of top plate and bottom plate. Sheathing sandwiched shear walls exhibit excellent racking performance and can be applied in mid-rise timber buildings.

导出引用

郑维，陆伟东，刘伟庆，刘杏杏. 夹板木剪力墙的抗侧力性能试验[J]. 振动与冲击, 2016, 35(19): 94-100

ZHENG Wei, LU Wei-dong, LIU Wei-qing, LIU Xing-xing. Racking performance of sheathing sandwiched wood shear walls[J]. Journal of Vibration and Shock, 2016, 35(19): 94-100

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