鋼管混凝土柱計算

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數(shù)據(jù)輸入,,,,,,,,,,,,,,,

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鋼管外徑d(mm),820,軸心壓力N(KN),2860.00,,,,,,,,,,,,

管壁厚度t(mm),16.0,最大彎矩M(KN·m),510.00,,,,,,,,,,,,

鋼材抗壓強(qiáng)度設(shè)計值f(N/mm2),315,計算長度l(mm),19000,,,,,,,,,,,,

鋼材屈服強(qiáng)度值fy(N/mm2),345,等效彎矩系數(shù)βm,1.0,,,,,,,,,,,,

混凝土強(qiáng)度等級,C30,鋼材彈性模量Es(N/mm2),2.06E+05,,,,,,,,,,,,

當(dāng)構(gòu)件處于溫度變化的環(huán)境中時，請輸入右值,,溫度t(℃)（80≤t≤150）,,,,,,,,,,,,,

構(gòu)件偏心率2M/Nd1（此值僅供參考）,0.453,永久荷載所占比例（%）,,,,,,,,,,,,,

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數(shù)據(jù)輸出,,,,,,,,,,,,,,,

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一、常規(guī)數(shù)據(jù),,,,,,,,,,,,,,,

混凝土抗壓強(qiáng)度標(biāo)準(zhǔn)值fck(N/mm2),20.1,混凝土抗壓強(qiáng)度設(shè)計值fc(N/mm2),14.3,,,,,,,,,,,,

鋼管內(nèi)徑d1=d-2t(mm),788,組合截面面積Asc=πd2/4(mm2),5.3E+05,,,,,,,,,,,,

混凝土截面面積Ac=πd12/4(mm2),4.9E+05,鋼管截面面積As=Asc-Ac(mm2),4.0E+04,,,,,,,,,,,,

組合截面抵抗矩Wsc=Ascd/8(mm3),5.4E+07,含鋼率α=As/Ac,0.083,,,,,,,,,,,,

套箍系數(shù)ξ=αfy/fck,1.42,套箍系數(shù)ξ0=αf/fc,1.83,,,,,,,,,,,,

系數(shù)B=7.483×10-4fy+0.974,1.232,系數(shù)C=-5.188×10-3fck+0.0309,-0.073,,,,,,,,,,,,

受壓組合強(qiáng)度標(biāo)準(zhǔn)值fysc=(1.212+Bξ+Cξ2)fck(N/mm2),,,56.6,,,,,,,,,,,,

受壓組合強(qiáng)度設(shè)計值fsc=(1.212+Bξ0+Cξ2)fc(N/mm2),,,47.4,,,,,,,,,,,,

受壓組合彈性模量Esc=(12.2×10-4+0.7284/fy)fyscEs(N/mm2),,,3.88E+04,,,,,,,,,,,,

溫度折減系數(shù)kt,1.000,徐變折減系數(shù)kc,1.000,,,,,,,,,,,,

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二、剛度驗算,,,,,,,,,,,,,,,

構(gòu)件長細(xì)比λ=4*l/d,92.7,構(gòu)件容許長細(xì)比[λ],80,,,,,,,,,,,,

剛度驗算λ<[λ],,,不滿足,,,,,,,,,,,,

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三、強(qiáng)度驗算,,,,,,,,,,,,,,,

N/Asc(N/mm2),5.42,0.2fscktkc(N/mm2),9.47,,,,,,,,,,,,

當(dāng)N/Asc≥0.2fscktkc時，驗算N/Asc+M/1.5Wsc≤fscktkc,,,,,,10,20,30,40,50,60,70,80,90,100

當(dāng)N/Asc＜0.2fscktkc時，驗算N/1.4Asc+M/1.4Wsc≤fscktkc,,,滿足,,Q235,1.000,0.990,0.978,0.960,0.902,0.849,0.801,0.761,0.727,0.696

,,,,,16Mn,1.000,0.990,0.976,0.956,0.897,0.841,0.791,0.748,0.710,0.631

四、穩(wěn)定性驗算,,,,,15MnV,1.000,0.990,0.976,0.957,0.898,0.842,0.793,0.750,0.713,0.596

軸心受壓構(gòu)件穩(wěn)定系數(shù)ψ,0.689,歐拉臨界力NE=π2EscAsc/λ2(KN),2.4E+04,,,,,,,,,,,,

N/ψAsc(N/mm2),7.86,0.2fscktkc(N/mm2),9.47,,Q235,,,,,,,,,,0.719

當(dāng)N/ψAsc≥0.2fscktkc時，驗算N/ψAsc+βmM/1.5Wsc(1-0.4N/NE)≤fscktkc,,,,,16Mn,,,,,,,,,,0.689

當(dāng)N/ψAsc＜0.2fscktkc時，驗算N/1.4ψAsc+βmM/1.4Wsc(1-0.4N/NE)≤fscktkc,,,滿足,,15MnV,,,,,,,,,,0.682

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