Eight shear wall specimens sheathed with 11 mm structural oriented strand board panels were assembled with overdriven sheathing nails and tested using a pseudo-dynamic procedure. Specimens used 38389 mm Douglas Fir-Larch framing members and 8d cooler, gun-driven sheathing nails. Four overdriven nail depths were considered: flush, 1.6, 3.2, and 4.8 mm. Nails were spaced at 76 mm on center along the edges and 305 mm on center along intermediate supports. Edge nailing distance was 9.5 mm. Two specimens were constructed for each aforementioned overdriven depth. To determine a lower bound on capacity, 100 percent of the sheathing nails in a specimen were driven to the specified depth. Results from this study indicate that any level of sheathing-nail overdrive will reduce the capacity of a shear wall. Compared to specimens with flush-driven nails, specimens with nails overdriven 1.6 mm suffered 5 percent loss in strength and gained 1 percent in displacement capacity. Specimens with nails overdriven 3.2 mm had strength and displacement capacity reduced by 12 and 22 percent, respectively. Specimens with nails overdriven 4.8 mm fared poorly; strength was reduced 24 percent, and displacement capacity was reduced 56 percent.
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机译：用 11 mm 结构取向刨花板板护套的 8 个剪力墙试样用超驱动护套钉组装，并使用伪动力学程序进行测试。标本使用了 38389 毫米道格拉斯冷杉落叶松框架构件和 8d 冷却器、枪驱动的护套钉。考虑了四种过驱动钉深度：齐平、1.6、3.2 和 4.8 mm。钉子沿边缘的中心间隔为 76 毫米，沿中间支撑的中心间隔为 305 毫米。边缘钉距为 9.5 毫米。对于上述每个超驱动深度，构建了两个试样。为了确定容量的下限，将试样中 100% 的护套钉打入指定深度。这项研究的结果表明，任何程度的护套钉过载都会降低剪力墙的容量。与采用齐平驱动钉的试样相比，钉子超驱动 1.6 mm 的试样强度损失了 5%，位移能力提高了 1%。钉子过压 3.2 mm 的试样的强度和位移能力分别降低了 12% 和 22%。钉子过长 4.8 mm 的试样表现不佳;强度降低了24%，排水能力降低了56%。
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