V7.8計算軟件計算八、立柱驗(yàn)算數(shù)據(jù)中： 3、穩(wěn)定性驗(yàn)算1) 不組合風(fēng)荷載時立桿從左到右受力為(Nut＝γG∑NGk+1.4∑NQk)：R1=0.321+[1.2(0.3+(24+1.1)0.12)0.8+1.4(1+2)0.8](0.9/2+(0.5-0.35/2)/2)
+1.350.159.8=6.311kNR2=9.427+1.350.15(9.8-1.2)=11.168kNR3=9.427+1.350.15(9.8-1.2)=11.168kNR4=0.321+[1.2(0.3+(24+1.1)0.12)0.8+1.4(1+2)0.8](0.9/2+(1-0.5-0.35/2)/2)
+1.350.159.8=6.311kNNut=max[R1,R2,R3,R4]=max[6.311, 11.168, 11.168, 6.311]=11.168kN1.05Nut/(φAKH)=1.0511.168103/(0.2814240.972)=101.278N/mm2≤[f]=205N/mm2符合要求！2) 組合風(fēng)荷載時立桿從左到右受力為(Nut＝γG∑NGk+0.851.4∑NQk)：R1=5.829kN, R2=10.977kN, R3=1
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