Rothoblaas - 木螺钉和连接器 Page 278
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受剪螺钉的最小距离 d1 a1 [mm] a2 a3,t a3,c a4,t a4,c 通过预钻孔插入的螺钉 5 25 [mm] 12∙d 60 [mm] 3∙d [mm] [mm] [mm] a2 [mm] [mm] 15∙d [mm] 5∙d a4,c [mm] d = 螺钉标称直径 15 10∙d 15 5 5∙d 25 75 10∙d 50 25 5∙d 50 10∙d 50 25 5∙d 25 25 5∙d 35 60 50 10∙d 非受力端 90° < α < 270° F α α F a3,t • 考虑到木构件的密度 ρk ≤ 420 kg/m3，最小距离根据 EN 1995: 2014 标准确定。 278 | EWS | 户外 35 无预钻孔状态下插入螺钉 25 5∙d a2 a2 备注： 7∙d 3∙d 5 受力端 -90° < α < 90° a1 a1 35 无预钻孔状态下插入螺钉 12∙d [mm] 7∙d 7∙d 15 3∙d 20 4∙d 35 7∙d 5 20 4∙d 15 3∙d [mm] a3,c a4,t 通过预钻孔插入的螺钉 5∙d [mm] a3,t 荷载-木纹夹角 α = 90° [mm] d1 a1 荷载-木纹夹角 α = 0° a3,c 受力边缘 0° < α < 180° 非受力边缘 180° < α < 360° α F α a4,t F a4,c
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