查表10#橋梁模板槽鋼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剪應力、瞇=滿足要求。次肋擾度滿足要求。主肋雙拼16#橋梁模板槽鋼復核(II型)主肋承受次肋傳遞的荷載，主肋間距0.8m，一根主肋荷載為71.624 x 0.8=57.3對于墩身受力按簡支梁驗算主肋:查表16#橋梁模板槽鋼W=116.8cm3，則:滿足要求。57.3 x 1.7=48.71 kN查表16#橋梁模板槽鋼Ix=934.Scm4,Sx=70.3cm3,d(腹厚)=8.5mmQSx一lxd剪應力、二=滿足要求。主肋擾度48.71 x 103 x 70.3 x 10-6=85MPaSqL3 84EI5x57.3 x1.74=.— =3.2mm384x2.1x1011 x9.345x100由于主肋雙拼16#橋梁模板槽鋼，所以X3.2/2=1.6mm<4.25mm(4.25mm由《路橋施工一算手冊》P178頁表8-11所得)。滿足要求。主肋雙拼20#橋梁模板槽鋼復核(M型)主肋承受次肋傳遞的荷載，主肋間距0.8m，一根主肋荷載71.624X0.8=57.3對于墩身受力按簡支梁驗算主肋:aL257.3 X 2.228=34.67kN·m查表20#橋梁模板槽鋼W=191.4cm3，則:a=1M2 x 0.9 W34.671.8 x 1.914 x 1041 O 1 MPa<[aN,]=145MPa滿足要求。12 x 57.3 x 2.2=63.03kN20#橋梁模板槽鋼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剪應力、ax=滿足要求。主肋擾5aL4f=384EI=5x57.3x2.54384x2.1x1011x1913.7x10"g=7.3mm由于主肋雙拼f=7.3/2=3.65mm<6.25mm ( 6.25mm由《路橋施工計算手冊》P178頁表8-11所得)。滿足要求。鎖拉桿復核鎖角拉桿拉力等于主肋支點反力=57.3kN=57300N;直徑27mm圓鋼螺桿容許拉力=140MPaX 152mmx3.14X0.85=84074N;直徑25mm精軋螺紋鋼容許拉力=0.75X785MPaX 12.52X3.14x0.85=245527N,皆滿足要求。m.yishengpaimai.com
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