查表10#桥梁模板槽钢Ix=198.3cm4,SX=23.5cm3,d(腹厚)=5.3mm8.6x103 x23.5 x10-6198.3 x 10-8 x 0.005310.5MPa<[i=85MPaQSx一Ixd剪应力、眯=满足要求。次肋扰度满足要求。主肋双拼16#桥梁模板槽钢复核(II型)主肋承受次肋传递的荷载，主肋间距0.8m，一根主肋荷载为71.624 x 0.8=57.3对于墩身受力按简支梁验算主肋:查表16#桥梁模板槽钢W=116.8cm3，则:满足要求。57.3 x 1.7=48.71 kN查表16#桥梁模板槽钢Ix=934.Scm4,Sx=70.3cm3,d(腹厚)=8.5mmQSx一lxd剪应力、二=满足要求。主肋扰度48.71 x 103 x 70.3 x 10-6=85MPaSqL3 84EI5x57.3 x1.74=.— =3.2mm384x2.1x1011 x9.345x100由于主肋双拼16#桥梁模板槽钢，所以X3.2/2=1.6mm<4.25mm(4.25mm由《路桥施工一算手册》P178页表8-11所得)。满足要求。主肋双拼20#桥梁模板槽钢复核(M型)主肋承受次肋传递的荷载，主肋间距0.8m，一根主肋荷载71.624X0.8=57.3对于墩身受力按简支梁验算主肋:aL257.3 X 2.228=34.67kN·m查表20#桥梁模板槽钢W=191.4cm3，则:a=1M2 x 0.9 W34.671.8 x 1.914 x 1041 O 1 MPa<[aN,]=145MPa满足要求。12 x 57.3 x 2.2=63.03kN20#桥梁模板槽钢1913.7cm4,SX=114.7cm3,d(腹厚)=9.Omm60.03 x 103 x 114.7 x 10-642MPa<[T]=85MPa力表=剪查IxQsx一Ixd剪应力、ax=满足要求。主肋扰5aL4f=384EI=5x57.3x2.54384x2.1x1011x1913.7x10"g=7.3mm由于主肋双拼f=7.3/2=3.65mm<6.25mm ( 6.25mm由《路桥施工计算手册》P178页表8-11所得)。满足要求。锁拉杆复核锁角拉杆拉力等于主肋支点反力=57.3kN=57300N;直径27mm圆钢螺杆容许拉力=140MPaX 152mmx3.14X0.85=84074N;直径25mm精轧螺纹钢容许拉力=0.75X785MPaX 12.52X3.14x0.85=245527N,皆满足要求。www.zbtaixing.com