雨蓬計(jì)算程序兼計(jì)算書

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數(shù)據(jù)輸入,,,,

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梁寬b(mm),,350,活荷載標(biāo)準(zhǔn)值qK(KN/m),3.51

梁高h(yuǎn)(mm),,800,混凝土強(qiáng)度等級,C30

梁上墻體高h(yuǎn)q(mm),,0,受拉鋼筋強(qiáng)度設(shè)計(jì)值fy(N/mm2),360

雨蓬板恒荷載gKb(KN/m2),,5.00,箍筋強(qiáng)度設(shè)計(jì)值fyv(N/mm2),210

雨蓬板計(jì)算跨度lb(mm),,1300,梁凈跨ln(mm),8650

雨蓬板長度lb0(mm),,9000,梁計(jì)算跨度l0(mm),9000

雨蓬板荷載pb(KN/m2),,9.78,梁以上樓面恒荷載標(biāo)準(zhǔn)值glK(KN/m2),0.00

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數(shù)據(jù)輸出,,,,

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一、常規(guī)數(shù)據(jù),,,,

恒荷載,梁重25bh,7.00,混凝土軸心抗壓設(shè)計(jì)值fc(N/mm2),14.3

,"梁上墻體重20b*MIN[hq,ln/3]",0.00,系數(shù)α1,1.00

,雨蓬板傳來(lb+b/2)gKb(KN/m),7.38,混凝土抗拉設(shè)計(jì)值ft(N/mm2),1.43

恒荷載標(biāo)準(zhǔn)值gK(KN/m),,14.38,梁有效高度h0=h-35(mm),765

荷載設(shè)計(jì)值p=1.2gK+1.4qK(KN/m),,22.16,受扭塑性抵抗矩Wt=b2*(3h-b)/6(mm3),4.19E+07

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二、截面驗(yàn)算,,,,

剪力V=pln/2(KN),,95.9,驗(yàn)算V≤0.07fcbh0,滿足

力矩mp=pblb2/2(KN·m/m),,8.26,抵抗扭矩T=mpl0/2(KN·m),37.19

V/bh0+T/Wt(N/mm2),,1.25,驗(yàn)算V/bh0+T/Wt≤0.25fc,滿足

驗(yàn)算V/bh0+T/Wt≤0.7ft,,不滿足,需進(jìn)行構(gòu)件受剪扭承載力計(jì)算,

驗(yàn)算V≤0.035fcbh0,,滿足,不需進(jìn)行受剪承載力驗(yàn)算,

驗(yàn)算T≤0.175ftWt,,不滿足,需進(jìn)行受扭承載力驗(yàn)算,

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三、構(gòu)造配筋,,,,

受扭承載力降低系數(shù)βt=1.5/(1+0.5VWt/Tbh0),,,,1.248

βt實(shí)際取值（當(dāng)βt<0.5時(shí)，取0.5；當(dāng)βt>1.0時(shí)，取1.0）,,,,1.000

系數(shù)α=1+1.75(2βt-1),,2.75,最小配箍率ρsvmin=0.02αfc/fyv,0.0037

幾肢箍n,,2,,

箍筋直徑d(mm),,10,實(shí)際配箍率ρsv=2Asv/bs,0.0045

箍筋間距s(mm),,100,配箍是否滿足(ρsv≥ρsvmin),滿足

受扭縱筋最小配筋率ρtlmin=0.08(2βt-1)fc/fyv,,,,0.0054

受扭鋼筋直徑d(mm),,18,受扭縱筋實(shí)際配筋率ρtl=Astl/bh,0.0055

受扭鋼筋數(shù)量,,6,受扭配筋是否滿足(ρtl≥ρtlmin),滿足

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四、承載力驗(yàn)算,,,,

⒈受彎承載力驗(yàn)算,,,,

彎矩M=pl02/8(KN·m),,224.41,受彎鋼筋直徑d(mm),25

γS=(1+(1-2αS)1/2)/2,,0.9601,受彎鋼筋數(shù)量,2

截面抵抗矩系數(shù)αS=M/α1fcbh02,,0.0766,鋼筋實(shí)際配筋面積AS(mm2),981.7

鋼筋面積AS=M/γSfyh0(mm2),,848.7,是否滿足,滿足

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⒉受剪承載力驗(yàn)算,,,,

斜截面受剪承載力VCS=0.07fcbh0+1.5fyvnAsvh0/s(KN),,,,

,,,驗(yàn)算VCS≥V,

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⒊受扭承載力驗(yàn)算,,,,

截面核芯部分短邊尺寸bcor=b-50(mm),,300,截面核芯部分長邊尺寸hcor=h-50(mm),750

截面核芯部分面積Acor=bcorhcor(mm2),,225000,截面核芯部分周長ucor=2(bcor+hcor)(mm),2100

受扭全部縱筋面積Astl(mm2),,1526.8,沿截面周邊單肢箍筋面積Ast1(mm2),78.5

受扭縱筋與箍筋的配筋強(qiáng)度比值ζ=fyAstls/fyvAst1ucor,,,,1.59

ζ實(shí)際取值(當(dāng)ζ<0.6時(shí)，取0.6；當(dāng)ζ>1.7時(shí)，取1.7),,,,1.59

0.35ftWt+1.2ζ1/2*fyvAst1Acor/s(KN·m),,77.05,驗(yàn)