Rothoblaas - 木螺钉和连接器 Page 184
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静态值 | BEECH LVL 特征值 EN 1995:2014 抗拉强度(1) 几何形状 钢 抗拉强度 全螺纹抗拔强度 (2) L b A d1 d1 eq. [mm] d1 L b [mm] [mm] [mm] 6 180 170 190 6 7 140 6 220 8 200 8 280 6 8 9 8 无预钻孔 A min [mm] 130 Rax,k 230 190 [kN] 32,76 22,62 42,84 29,58 52,92 36,54 210 63,84 44,08 290 90,72 260 250 270 240 230 250 320 310 330 270 有预钻孔 Rax,k [kN] 150 210 LVL 63,00 43,50 77,28 53,36 62,64 104,16 71,92 抗拉强度(1) 几何形状 Sg A Sg A Rtens,k [kN] 18,00 32,00 钢 抗拉强度 部分螺纹抗拔强度 (2) L b 钢 d1 d1 eq. [mm] d1 [mm] 6 6 7 [mm] 140 180 6 220 8 200 8 280 6 8 9 L 8 b [mm] 130 170 250 240 230 320 310 备注： 之间的最小值。 Rax,d = min 55 95 190 A min [mm] Rax,k [kN] [kN] 23,94 16,53 105 28,56 19,72 145 42,00 95 105 125 145 165 (2) 螺纹轴向抗拔强度 Rax,90,k 的评估考虑了木纹与螺钉之间的夹角为 90°，插入长度为 b。 184 | VGZ HARDWOOD | 木结构 有预钻孔 115 ax,d) 与钢材边的强度设计值 (R tens,d) Rax,k kmod γM Rtens,k γM2 Rax,k 13,86 135 125 无预钻孔 75 115 85 270 (1) 螺钉的强度设计值是木材边的强度设计值 (R [mm] 75 210 260 Sg LVL 9,57 18,90 13,05 28,98 20,01 35,28 24,36 29,00 48,72 33,64 钢 Rtens,k [kN] 18,00 32,00 (3) 螺钉的滑移强度设计值是木材边的强度设计值 (R V,d) 与钢材边的强度设计值 (R tens,d 45°) 之间的最小值。 RV,d = min RV,k kmod γM Rtens,k 45° γM2 (4) 螺钉的抗拉强度的评估考虑了木纹与螺钉之间的夹角为45°。
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