杆型钢型号16b号槽钢附墙杆截面面积A(mm2)5510附墙杆截面回转半径i(mm)121.5附墙杆强度设计值[f](N/mm2)205附墙杆允许长细比[λ]1001、杆件轴心受拉强度验算σ=N/A=427243/5510=77.54N/mm2≤[f]=205N/mm2满足要求!2、杆件轴心受压强度验算附墙杆1长细比:λ1=L0/i=(a12+b12)0.5/i=(38702+75502)0.5/121.5=69.828≤[λ]=100,查规范表得:φ1=0.752满足要求!附墙杆2长细比:λ2=L0/i=(a22+b22)0.5/i=(36702+58502)0.5/121.5=56.839≤[λ]=100,查规范表得:φ2=0.824满足要求!附墙杆3长细比:λ3=L0/i=(a32+b32)0.5/i=(31002+36502)0.5/121.5=39.414≤[λ]=100,查规范表得:φ3=0.901满足要求!附墙杆4长细比:λ4=L0/i=(a42+b42)0.5/i=(33002+53502)0.5/121.5=51.736≤[λ]=100,查规范表得:φ4=0.848满足要求!附墙杆1轴心受压稳定系数:σ1=N1/(φ1A)=274992/(0.752×5510)=66.367N/mm2≤[f]=205N/mm2满足要求!附墙杆2轴心受压稳定系数:σ2=N2/(φ2A)=234771/(0.824×5510)=51.709N/mm2≤[f]=205N/mm2满足要求!附墙杆3轴心受压稳定系数:σ3=N3/(φ3A)=419139/(0.901×5510)=84.427N/mm2≤[f]=205N/mm2满足要求!附墙杆4轴心受压稳定系数:σ4=N4/(φ4A)=427243/(0.848×5510)=91.438N/mm2≤[f]=205N/mm2满足要求!
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