论文部分内容阅读
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。
In order to study the effect of different construction forms on the lateral resistance of the plywood shear wall, eight horizontal plywood shear wall specimens were tested for horizontal resistance to lateral force. One of them was monotonous loading and the other seven were low cyclic loading The specimen parameters include the length of the posts, the spacing of the studs, the thickness of the wall panel, and the spacing of the staples. According to the test phenomenon and the comparison of the test data, the damage modes and the performance indexes such as shear strength, lateral stiffness, deformability, stiffness degradation and energy dissipation of each specimen are analyzed. Tensile fracture at the top is the main reason leading to the overall failure of the plywood shear wall. The thickness of the wall slab determines the failure mode of the nailed connection of the edge wall, which is the important factor affecting the lateral stiffness and the ultimate displacement of the plywood shear wall Factors; reasonably reduce the nail spacing can significantly improve the strength, stiffness and energy consumption of the wall, but not less than 75/150 mm, otherwise easily lead to the splint failure of the top beam and the bottom beam; The change of length has little effect on the anti-lateral force performance. Plywood shear wall with excellent lateral resistance performance, can be applied to the higher demand of lateral resistance in the high-rise timber structures.