Question

Two steel plates, both 16 mm thick with fy = 450 MPa and fu 600 MPa, need to be connected by a bolt group. Two options for this connection are shown separately in Figs. 4 and 5. Determine which system can resist a higher maximum design tensile load and state the corresponding failure modes. Assume the shear plane passes through the bolt shank. 30 mm 30 mm 30 mm 30 mm 30 mm 30 mm 50 mm 50 mm 25 mm 50 mm 25 mm N* 25 mm 50 mm 25 mm 50 mm 50 mm 5 M24 8.8/S bolts 6 M20 8.8/S bolts

Answer 1

Page: Date: / We have tor sile stnength Tan o.9 An fu lwu e ffectivve Setonal AM-net fu-uitinrate tensi1e stoiesS of mambtr Ymi =1.2s 3amm 3om no omm b bo1t SUrrm b0lt holed 04 = 2012= 2 2m SUn 07 Let the failne parttonn be 1-2-3-4-5 Anet = (B-nd)t -20o-3x22)X16 =2144mm2 1 2 6-7-8 Anet :(B-ndo)t tt 49 Anet = (250 - 3*22)16 120 x16 2215MM 1-2--4-S Anet -(200-3x22)16 (30x1630IC - 22 88mm 2 Tdn o.9 22 82x6o 988.416103N 1-2S 988.416 KN

Page: 30 Date: 0 2 / 25 25 do = 24ャ2=2673 25 25 QS 2-314-s Amet =(2OD-3メ26)メ16= \9S 2mm 2 16-7-2-9 Anet -(2OD-2x28)X16 2368 cmっ2 1-2-7t3-4-5 Anet :2 -4メ26)IS (20)2x1 +(316 4x25 Sてスり 1824MM 2 Ant (20D-3x25)x16t (392x15 4x25 1680r0a 1 1 62.4 KN Tdn= 0.gメ2352x 600 Second blaや illtko moe hence tw