计算简图如下:每纵距脚手片自重NG2k=gk2×la×lb=0.35×1.5×1.1=0.5775kN每纵距施工荷载NQk=qk×la×lb=3×1.5×1.1=4.95kNMGk=kN·mMQk=kN·mM=1.2MGk+1.4MQk=1.2×0.07+1.4×0.605=0.931kN·m<f=205kN/mm2横向水平杆抗弯强度满足要求。[v]=lb/150=1100/150=7.3mmv<[v] 横向水平杆挠度满足要求。纵向水平杆计算按三跨连续梁计算,简图如下:脚手片自重均布荷载G2k=gk2×lb/3=0.35×1.1/3=0.128kN/m施工均布荷载Qk=qk×lb/3=3×1.1/3=1.1kN/mq=1.2G2k+1.4Qk=1.69kN/mMGkmax=0.10G2k×la2=0.10×0.128×1.5×1.5=0.029kN·mMQkmax=0.10Qk×la2=0.10×1.1×1.5×1.5=0.248kN·mM=1.2MGkmax+1.4MQkmax=1.2×0.029+1.4×0.248=0.382kN·m<f=205kN/mm2抗弯强度满足要求。[v]=lb/150=1500/150=10mmv≤[v] 挠度满足要求。横向水平杆与立杆连接的扣件抗滑承载力验算横向水平杆传给立杆的竖向作用力:R=(1.2NG2k+1.4NQk)/2=(1.2×0.5775+1.4×4.95)/2=3.812kNRc=8.00kNR≤Rc扣件抗滑承载力满足要求。3.2.5、立杆计算单立杆竖向承载力:N=1.2(NG1k+NG2k)+0.85×1.4∑NQk=1.2(H·gk1+7·gk2·la·lb/2)+0.85·1.4·n1·qk·la·lb/2=1.2(39.6×0.1248+7×0.35×1.1×1.5/2)+0.85×1.4×1×3×1.1×1.5/2