梁裂縫寬度+撓度計(jì)算EXCEL表格（自動(dòng)版）

1、,梁裂縫寬度計(jì)算書,4/4/04,梁截面特征,(紅色為輸入數(shù)值）,計(jì)算說明：梁寬,b(mm),800,1.本計(jì)算為梁跨中、支座裂縫梁高,h(mm),750, 寬度計(jì)算表。受拉鋼筋合力點(diǎn)距離,a(單排35mm;雙排60mm80mm),70,梁鋼筋保護(hù)層厚度,C(mm) (25C32),30,2.可自動(dòng)計(jì)算梁內(nèi)力，荷載計(jì)算材料特性, 考慮梁受均布荷載作用。, 梁支座內(nèi)力按1/12ql2計(jì)算。梁砼強(qiáng)度等級(jí),C?(20,25,30,35,40),30, 梁跨中內(nèi)力按1/24ql2計(jì)算。砼軸心抗壓強(qiáng)度,fc,14.3,砼軸心抗拉強(qiáng)度,ftk,2.01,3.按表中紅色標(biāo)記順序填出個(gè)鋼筋等級(jí),fy ,300

2、, 體工程計(jì)算參數(shù)值。黑色數(shù)據(jù)鋼筋的彈性模量, ,200000, 切不可改動(dòng)。,梁上荷載計(jì)算,4.梁受拉縱向鋼筋實(shí)配面積及直樓板恒載(Kn/m2),Gk,6, 徑可調(diào)整，對(duì)計(jì)算結(jié)果較敏感。樓板活載(Kn/m2),Qk,2,梁荷載分布計(jì)算寬度(m),5.8,梁計(jì)算跨度(m),l0,12,梁自重(Kn/m),15,內(nèi)力計(jì)算,固端彎矩,736.80,跨中彎矩,368.40,梁支座裂縫計(jì)算,梁拉區(qū)翼緣板計(jì)算寬度,bf(mm),2000,梁拉區(qū)翼緣板計(jì)算高度,hf(mm),100,梁受拉縱向鋼筋實(shí)配面筋,As,8124,梁受拉縱向鋼筋等效直徑,deq,28,梁縱向鋼筋的應(yīng)力,sk=Mk/0.87/h0/

3、As,153.30 ,有效鋼筋配筋率,te =(As+Ap)/Ate; Ate=0.5bh+(bf-b)hf,0.0193 ,鋼筋應(yīng)變不均勻系數(shù),=1.1-0.65*ftk/te/sk(0.21),0.659 ,梁裂縫寬度,max=cr*sk/Es*(1.9c+0.08deq/te),0.1834 ,裂縫控制值,lim (mm),0.4000 ,裂縫驗(yàn)算結(jié)果,滿足？OK!,OK!,梁跨中裂縫計(jì)算,梁受拉縱向鋼筋實(shí)配面筋,As,8124,梁受拉縱向鋼筋等效直徑,deq,28,梁縱向鋼筋的應(yīng)力,sk=Mk/0.87/h0/As,76.65 ,有效鋼筋配筋率,te =(As+Ap)/Ate; Ate=0.5bh,0.0271 ,鋼筋應(yīng)變不均勻系數(shù),=1.1-0.65*ftk/te/sk(0.21),0.471 ,梁裂縫寬度,max=cr*sk/Es*(1.9c+0.08deq/te),0