Rothoblaas - 木螺钉和连接器 Page 35
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受剪螺钉的最小距离 | LVL 荷载-木纹夹角 α = 0° d1 [mm] a2 [mm] a1 a3,t 无预钻孔状态下插入螺钉 [mm] 12∙d [mm] 15∙d [mm] a3,c [mm] a4,t 5 60 6 72 5∙d 25 10∙d 50 60 25 30 5∙d [mm] a4,c 荷载-木纹夹角 α = 90° 5∙d d = 螺钉标称直径 75 25 30 90 30 8 无预钻孔状态下插入螺钉 10 96 120 5∙d 120 150 10∙d 50 10∙d 40 50 80 5∙d 100 40 40 10∙d 50 a4,c 5∙d 5 6 8 10 40 50 25 30 40 50 60 80 100 50 60 80 100 25 50 25 30 60 50 80 30 100 40 50 a4,t α a2 F F α a1 F a2 a2 α α F a3,t 备注: • 最小距离符合 ETA-11/0030,除非 LVL 板技术文档另有说明,否则应视为有效。 • 无论使用平行单板还是交叉单板的软木LVL,最小距离均有效。 • 无预钻孔的最小距离对于最小厚度的 LVL 构件有效 tmin: t1 ≥ 8,4 d -9 t2 ≥ a1 a3,c 其中: t 1 是与 2 个木构件连接的 LVL 构件的厚度(以mm为单位)。在连接3个或更多构 件的情况下,t 1 表示位于最外部的LVL的厚度; t 2 是与 3 个或更多构件连接的中心构件的厚度(以mm为单位)。 11,4 d 75 木工 | HBS | 35
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