Rothoblaas - 木结构连接器 Page 537
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ULS 垫圈静态值 木材中的抗拔承载力 特性值 dINT dEXT s Nax,k [mm] [mm] [mm] [kN] DIN 125 A 10,5 20,0 2,0 1,71 DIN 9021 10,5 30,0 2,5 4,65 DIN 440 R 11,0 34,0 3,0 6,10 DIN 1052 - - - - DIN 125 A 13,0 24,0 2,5 2,40 dINT dEXT 杆 标准 M10 M12 M16 M20 M24 DIN 9021 13,0 37,0 3,0 7,07 DIN 440 R 13,5 44,0 4,0 10,33 18,66 DIN 1052 14,0 58,0 6,0 DIN 125 A 17,0 30,0 3,0 3,60 DIN 9021 17,0 50,0 3,0 13,02 DIN 440 R 17,5 56,0 5,0 16,67 DIN 1052 18,0 68,0 6,0 25,33 DIN 125 A 21,0 37,0 3,0 5,47 DIN 9021 22,0 60,0 4,0 18,35 DIN 440 R 22,0 72,0 6,0 27,69 DIN 1052 22,0 80,0 8,0 34,85 DIN 125 A 25,0 44,0 4,0 7,72 DIN 9021 - - - - DIN 440 R 24,0 80,0 6,0 34,31 DIN 1052 27,0 105,0 8,0 60,65 s Nax 临界:垫圈头拉入木材 N > Nax,Max Nax Nax 一般原则: • 特征值符合 EN 1995-1-1。 • 计算过程中考虑的木材密度为 ρk = 385 kg/m3。 • 设计值获取自特性征值,如下所示: • 垫圈的穿拉力和其与木构件的接触面成比例关系。 N k Nax,d = ax,k mod γM 系数 γM 和 kmod 应根据计算适用的当前规定确定。 螺栓和杆 | MET | 537
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