Abstract Construction of tall-wood buildings is increasing in North America. Cross-laminated timber (CLT) is one of the dominant structural mass-timber products and is a high strength, lightweight, value-added, wood-composite panel suited for shear walls. The advent of tall-wood buildings necessitates further connection development for increased seismic resiliency to meet life-safety and performance-based design objectives. A novel slip-friction connection (SFC) was tested on six 1.52 m by 3.04 m CLT walls subject to static and pseudo-static cyclic loading. The SFC used Belleville springs and brass shims to provide stable slip forces and equivalent-viscous damping ratios between 0.28 and 0.63. Half of the wall tests included a short post-tensioned restoring rod with Belleville washers. Inclined self-tapping screws (STS) were used to connect the SFCs to the CLT walls, and the SFCs were designed to reliably dissipate energy while protecting the rocking walls from damage. The wall’s response followed the idealized parallelogram, or flag shaped, hysteretic models observed in other slip friction systems. Results indicate repeatable performance and structural protection at least 2.5 times STS design loads. Self-centering and partially-centering wall conditions were tested by changing the SFC slip forces, while maintaining an initial 23 kN restoring force. Based on these experiments designers will be able to apply SFCs to CLT rocking walls.

中文翻译：

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具有滑动摩擦连接的交叉层压木摇墙

摘要 在北美，高木建筑的建造正在增加。交叉层压木材 (CLT) 是主要的结构大块木材产品之一，是一种适用于剪力墙的高强度、轻质、高附加值的木复合板。高木建筑的出现需要进一步开发连接以提高抗震能力，以满足生命安全和基于性能的设计目标。一种新型滑动摩擦连接 (SFC) 在六个 1.52 m x 3.04 m CLT 壁上进行了静态和伪静态循环载荷的测试。SFC 使用 Belleville 弹簧和黄铜垫片来提供稳定的滑动力和介于 0.28 和 0.63 之间的等效粘性阻尼比。一半的墙壁测试包括带有贝勒维尔垫圈的短后张恢复杆。倾斜自攻螺钉 (STS) 用于将 SFC 连接到 CLT 壁，并且 SFC 旨在可靠地耗散能量，同时保护摇摆壁免受损坏。壁的响应遵循在其他滑动摩擦系统中观察到的理想化平行四边形或旗形滞后模型。结果表明可重复的性能和结构保护至少是 STS 设计载荷的 2.5 倍。通过改变 SFC 滑动力，同时保持初始 23 kN 恢复力，测试自定心和部分定心壁条件。基于这些实验，设计师将能够将 SFC 应用于 CLT 摇墙。在其他滑动摩擦系统中观察到的滞后模型。结果表明可重复的性能和结构保护至少是 STS 设计载荷的 2.5 倍。通过改变 SFC 滑动力，同时保持初始 23 kN 恢复力，测试自定心和部分定心壁条件。基于这些实验，设计师将能够将 SFC 应用于 CLT 摇墙。在其他滑动摩擦系统中观察到的滞后模型。结果表明可重复的性能和结构保护至少是 STS 设计载荷的 2.5 倍。通过改变 SFC 滑动力，同时保持初始 23 kN 恢复力，测试自定心和部分定心壁条件。基于这些实验，设计师将能够将 SFC 应用于 CLT 摇墙。