②剪应力和挤压应力的强度条件 F64×103 ≤[z]:[L1] 50mm lb 16×80 2F 2F2×64×10 ≤[o,]:[2]= =53.3mm Lh 10×240 ③综上[]=mx{[L][L]}=533m Lm d F b h L 剪应力和挤压应力的强度条件   50mm 16 80 64 10 [ ] [ ] 3 1 =     = =   b F L Lb FS S 53.3mm 10 240 2 64 10 [ ] 2 [ ] [ ] 2 3 2 =      = = b s b s b s b s h F L Lh F   综上 L= maxL1 ,L2 = 53.3mm AS