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頂板厚度達(dá)不到設(shè)計(jì)要求處理方案(編輯修改稿)

2025-05-20 07:26 本頁面
 

【文章內(nèi)容簡介】 式 -4) ρte = 251./ 55000.=  當(dāng) ρte < 時,取ρte = ψ = * ( * ) =  ωmax = αcr*ψ*σsk/Es*(+*Deq/ρte) (混凝土規(guī)范式 -1) ωmax =***(*20.+* ) = ,滿足規(guī)范要求! ③、左端支座跨中裂縫:  裂縫間縱向受拉鋼筋應(yīng)變不均勻系數(shù) ψ, 按下列公式計(jì)算:  ψ = * ftk / (ρte * σsk) (混凝土規(guī)范式 -2) σsk = Mk / ( * ho * As) (混凝土規(guī)范式 -3) σsk = *10^6/(* 91.* 251.) = 矩形截面,Ate=*b*h=*1000*110.= ρte = As / Ate (混凝土規(guī)范式 -4) ρte = 251./ 55000.=  當(dāng) ρte < 時,取ρte = ψ = * ( * ) =  ωmax = αcr*ψ*σsk/Es*(+*Deq/ρte) (混凝土規(guī)范式 -1) ωmax =***(*20.+* ) = ,滿足規(guī)范要求! ④、下端支座跨中裂縫:  裂縫間縱向受拉鋼筋應(yīng)變不均勻系數(shù) ψ, 按下列公式計(jì)算:  ψ = * ftk / (ρte * σsk) (混凝土規(guī)范式 -2) σsk = Mk / ( * ho * As) (混凝土規(guī)范式 -3) σsk = *10^6/(* 91.* 335.) = 矩形截面,Ate=*b*h=*1000*110.= ρte = As / Ate (混凝土規(guī)范式 -4) ρte = 335./ 55000.=  當(dāng) ρte < 時,取ρte = ψ = * ( * ) =  ωmax = αcr*ψ*σsk/Es*(+*Deq/ρte) (混凝土規(guī)范式 -1) ωmax =***(*20.+* ) = ,滿足規(guī)范要求! ⑤、右端支座跨中裂縫:  裂縫間縱向受拉鋼筋應(yīng)變不均勻系數(shù) ψ, 按下列公式計(jì)算:  ψ = * ftk / (ρte * σsk) (混凝土規(guī)范式 -2) σsk = Mk / ( * ho * As) (混凝土規(guī)范式 -3) σsk = *10^6/(* 91.* 251.) = 矩形截面,Ate=*b*h=*1000*110.= ρte = As / Ate (混凝土規(guī)范式 -4) ρte = 251./ 55000.=  當(dāng) ρte < 時,取ρte = ψ = * ( * ) =  ωmax = αcr*ψ*σsk/Es*(+*Deq/ρte) (混凝土規(guī)范式 -1) ωmax =***(*20.+* ) = ,滿足規(guī)范要求! ⑥、上端支座跨中裂縫:  裂縫間縱向受拉鋼筋應(yīng)變不均勻系數(shù) ψ, 按下列公式計(jì)算:  ψ = * ftk / (ρte * σsk) (混凝土規(guī)范式 -2) σsk = Mk / ( * ho * As) (混凝土規(guī)范式 -3) σsk = *10^6/(* 91.* 335.) = 矩形截面,Ate=*b*h=*1000*110.= ρte = As / Ate (混凝土規(guī)范式 -4) ρte = 335./ 55000.=  當(dāng) ρte < 時,取ρte = ψ = * ( * ) =  ωmax = αcr*ψ*σsk/Es*(+*Deq/ρte) (混凝土規(guī)范式 -1) ωmax =***(*20.+* ) = ,滿足規(guī)范要求! 十層58/KS軸一、基本資料: 邊界條件(左端/下端/右端/上端):固定/固定/固定/鉸支/ 荷載:  永久荷載標(biāo)準(zhǔn)值:g = kN/M2  可變荷載標(biāo)準(zhǔn)值:q = kN/M2  計(jì)算跨度 Lx = 3100 mm ;計(jì)算跨度 Ly = 4400 mm  板厚 H = 85 mm; 砼強(qiáng)度等級:C30;鋼筋強(qiáng)度等級:HRB400 計(jì)算方法:彈性算法。 泊松比:μ=1/5. 考慮活荷載不利組合。 程序自動計(jì)算樓板自重。二、計(jì)算結(jié)果:  Mx =(+)*(* +* )* ^2 = M  考慮活載不利布置跨中X向應(yīng)增加的彎矩:  Mxa =(+)*(* )* ^2 = M Mx= + = M Asx= ,實(shí)配φ 8@200 (As = ) ρmin = % , ρ = %  My =(+)*(* +* )* ^2= M  考慮活載不利布置跨中Y向應(yīng)增加的彎矩:  Mya =(+)*(* )* ^2 = M My= + = M Asy= ,實(shí)配φ 8@200 (As = ) ρmin = % , ρ = %  Mx39。 =*(* +* )* ^2 = M Asx39。= ,實(shí)配φ 8@150 (As = ,可能與鄰跨有關(guān)系) ρmin = % , ρ = %  My39。 =*(* +* )* ^2 = M Asy39。= ,實(shí)配φ 8@200 (As = ,可能與鄰跨有關(guān)系) ρmin = % , ρ = %三、跨中撓度驗(yàn)算: Mk 按荷載效應(yīng)的標(biāo)準(zhǔn)組合計(jì)算的彎矩值 Mq 按荷載效應(yīng)的準(zhǔn)永久組合計(jì)算的彎矩值(1)、撓度和裂縫驗(yàn)算參數(shù):  Mk =(+)*(* +* )* ^2 = M  Mq =(+)*(* +* )* ^2 = M Es = = Ftk = = (2)、在荷載效應(yīng)的標(biāo)準(zhǔn)組合作用下,受彎構(gòu)件的短期剛度 Bs: ①、裂縫間縱向受拉鋼筋應(yīng)變不均勻系數(shù) ψ, 按下列公式計(jì)算:  ψ = * ftk / (ρte * σsk) (混凝土規(guī)范式 -2) σsk = Mk / ( * ho * As) (混凝土規(guī)范式 -3) σsk = (* 58.* 251.) = 矩形截面,Ate=*b*h=*1000* 85.= ρte = As / Ate (混凝土規(guī)范式 -4) ρte = 251./ 42500.= ψ = * (* ) =  當(dāng) ψ< 時,取ψ = ②、鋼筋彈性模量與混凝土模量的比值 αE: αE =Es / Ec = ③、受壓翼緣面積與腹板有效面積的比值 γf39。: 矩形截面,γf39。 = 0 ④、縱向受拉鋼筋配筋率 ρ = As / b / ho = 251./1000/ 58.= ⑤、鋼筋混凝土受彎構(gòu)件的 Bs 按公式(混凝土規(guī)范式 -1)計(jì)算: Bs=Es*As*ho^2/[++6*αE*ρ/(1+ 39。)] Bs= 200000.* 251.* 58.^2/[*++6**(1+*)]= M(3)、考慮荷載長期效應(yīng)組合對撓度影響增大影響系數(shù) θ: 按混凝土規(guī)范第 條,當(dāng)ρ39。 = 0時,θ = (4)、受彎構(gòu)件的長期剛度 B,可按下列公式計(jì)算: B = Mk / [Mq * (θ 1) + Mk] * Bs (混凝土規(guī)范式 ) B= [ *(21)+ ]* = M(5)、撓度 f = κ * Qk * L ^ 4 / B f =* * ^4/ = f / L = ,滿足規(guī)范要求!四、裂縫寬度驗(yàn)算: ①、X方向板帶跨中裂縫:  裂縫間縱向受拉鋼筋應(yīng)變不均勻系數(shù) ψ, 按下列公式計(jì)算:  ψ = * ftk / (ρte * σsk) (混凝土規(guī)范式 -2) σsk = Mk / ( * ho * As) (混凝土規(guī)范式 -3) σsk = *10^6/(* 66.* 251.) = 矩形截面,Ate=*b*h=*1000* 85.= ρte = As / Ate (混凝土規(guī)范式 -4) ρte = 251./ 42500.=  當(dāng) ρte < 時,取ρte = ψ = * ( * ) =  ωmax = αcr*ψ*σsk/Es*(+*Deq/ρte) (混凝土規(guī)范式 -1) ωmax =***(*20.+* ) = ,滿足規(guī)范要求! ②、Y方向板帶跨中裂縫:  裂縫間縱向受拉鋼筋應(yīng)變不均勻系數(shù) ψ, 按下列公式計(jì)算:  ψ = * ftk / (ρte * σsk) (混凝土規(guī)范式 -2) σsk = Mk / ( * ho * As) (混凝土規(guī)范式 -3) σsk = *10^6/(* 58.* 251.) = 矩形截面,Ate=*b*h=*1000* 85.= ρte = As / Ate (混凝土規(guī)范式 -4) ρte = 251./ 42500.=  當(dāng) ρte < 時,取ρte = ψ = * ( * ) =  當(dāng) ψ< 時,取ψ =  ωmax = αcr*ψ*σsk/Es*(+*Deq/ρte) (混凝土規(guī)范式 -1) ωmax =***(*20.+* ) = ,滿足規(guī)范要求! ③、左端支座跨中裂縫:  裂縫間縱向受拉鋼筋應(yīng)變不均勻系數(shù) ψ, 按下列公式計(jì)算:  ψ = * ftk / (ρte * σsk) (混凝土規(guī)范式 -2) σsk = Mk / ( * ho * As) (混凝土規(guī)范式 -3) σsk = *10^6/(* 66.* 335.) = 矩形截面,Ate=*b*h=*1000* 85.= ρte = As / Ate (混凝土規(guī)范式 -4) ρte = 335./ 42500.=  當(dāng) ρte < 時,取ρte = ψ = * ( * ) =  ωmax = αcr*ψ*σsk/Es*(+*Deq/ρte) (混凝土規(guī)范式 -1) ωmax =***(*20.+* ) = ,滿足規(guī)范要求! ④、下端支座跨中裂縫:  裂縫間縱向受拉鋼筋應(yīng)變不均勻系數(shù) ψ, 按下列公式計(jì)算:  ψ = * ftk / (ρte * σsk) (混凝土規(guī)范式 -2) σsk = Mk / ( * ho * As) (混凝土規(guī)范式 -3) σsk = *10^6/(* 66.* 251.) = 矩形截面,Ate=*b*h=*1000* 85.= ρte = As / Ate (混凝土規(guī)范式 -4) ρte = 251./ 42500.=  當(dāng) ρte < 時,取ρte = ψ = * ( * ) =  ωmax = αcr*ψ*σsk/Es*(+*Deq/ρte) (混凝土規(guī)范式 -1) ωmax =***(*20.+* ) = ,滿足規(guī)范要求! ⑤、右端支座跨中裂縫:  裂縫間縱向受拉鋼筋應(yīng)變不均勻系數(shù) ψ, 按下列公式計(jì)算:  ψ = * ftk / (ρte * σsk) (混凝土規(guī)范式 -2) σsk = Mk / ( * ho * As) (混凝土規(guī)范式 -3) σsk = *10^6/(* 66.* 335.) = 矩形截面,Ate=*b*h=*1000* 85.= ρte = As / Ate (混凝土規(guī)范式 -4) ρte = 335./ 42500.=  當(dāng) ρte < 時,取ρte = ψ = * ( * ) =  ωmax = αcr*ψ*σsk/Es*(+*Deq/ρte) (混凝土規(guī)范式 -1) ωmax =***(*20.+* ) = ,滿足規(guī)范要求! 十層1216/KP軸一、基本資料: 邊界條件(左端/下端/右端/上端):固定/固定/固定/固定/ 荷載:  永久荷載標(biāo)準(zhǔn)值:g = kN/M2  可變荷載標(biāo)準(zhǔn)值:q = kN/M2  計(jì)算跨度 Lx = 5150 mm??;計(jì)算跨度 Ly = 2975 mm  板厚 H = 110 mm; 砼強(qiáng)度等級:C30;鋼筋強(qiáng)度等級:HRB400 計(jì)算方法:彈性算法。 泊松比:μ=1/5. 考慮活荷載不利組合。 程序自動計(jì)算樓板自重。二、計(jì)算結(jié)果:  Mx =(+)*(* +* )* ^2 = M  考慮活載不利布置跨中X向應(yīng)增加的彎矩:  Mxa =(+)*(* )* ^2 = M Mx= + = M Asx= ,實(shí)配φ 8@200 (As = ) ρmin = % , ρ = %  My =(+)*(* +* )* ^2= M  考慮活載不利布置跨中Y向應(yīng)增加的彎矩:  Mya =(+)*(* )* ^2 = M My= + = M Asy= ,實(shí)配φ 8@200 (As = ) ρmin = % , ρ = %  Mx39。 =*(* +* )
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