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,xxx無梁樓板計(jì)算書,,,,,,
,(等代框架法),,,,,,
一、總信息:,,,,,,,
,,,,,,,,
,混凝土強(qiáng)度,C30,板跨(X向),4.000,(m),,
,鋼筋強(qiáng)度,HRB335,板帶寬(Y向),5.000,(m),,
,荷載方式,均布荷載,板厚,300,(mm),,
,裂縫限值,0.2mm,板面活載,40,(kN/m2),,
,,,板面恒載,0,(kN/m2),,
,,,,,,,,
二、荷載計(jì)算:,,,,,,,
,1、恒載:gk=0.3*25+0=7.5kN/m2,,,,,,
,活載:p=40kN/m2,,,,,,
,,,,,,,,
,2、板面荷載標(biāo)準(zhǔn)值:,,qk=7.5+40=47.5kN/m2,,,,
,設(shè)計(jì)值:,,q=1.2*7.5+1.3*40=61kN/m2,,,,61
,,,,,,,,
,3、柱帽承受集中軸向壓力標(biāo)準(zhǔn)值:,,Nk=47.5*4*5=950kN,,,,
,設(shè)計(jì)值:,,N=61*4*5=1220kN,,,,
,,,,,,,,
三、板抗沖切計(jì)算:,,,,,,,
,取中柱計(jì)算,柱帽尺寸為1200x1200mm,h0=300-45=255mm,,,,,,,
,,0.7βh*ft*η*μm*h0,=0.7*1*1.43*0.939*5820*255,,,,
,,,=1393.69kN,>N,,,
,,故板抗沖切計(jì)算,滿足!,,,,
四、彎矩及配筋計(jì)算:,,,,,,,
,按五跨等跨梁計(jì)算彎矩,計(jì)算簡圖如下:,,,,,,
,,,,,,,,
,,,,,,,,
,,,,,,,,
,,,,,,,,
,,,,,,,,
,,,,,,,,
,,,,,,,,
,,,,,,,,
,,,,,,,,
,,,,,,,,
,,,,,,,,
,,,,,,,,
,各截面彎矩系數(shù)(荷載全跨布置),,,,,,
,跨內(nèi)最大彎矩,,,支座彎矩,,,
,,,,,,,,
,0.0782,0.0332,0.0469,-0.105,-0.0791,-0.0791,-0.105
,,,,,,,,
,,,,,,,,
,,,,,,,,
1、X向彎矩及配筋計(jì)算:,,,,,,,
,,,,,,,,
,取內(nèi)跨計(jì)算,柱帽寬度取c=1.2m,板帶寬取B=5/2=2.5m,h0=300-45=255mm,,,,,,,
,,,,,,,,
,則X向總彎矩標(biāo)準(zhǔn)值:,,,,,,
,,M總k=qk*ly*(lx-2/3*c)2,,,,,
,,,,,,,,
,,=2432kN*m,,,,,
,,,,,,,
,,,,,,,,
,X向總彎矩設(shè)計(jì)值:,,,,,,
,,M總=q*ly*(lx-2/3*c)2,,,,,
,,,,,,,,
,=1861.11kN*m,=3123.2kN*m,,,,,
,,,,,,,,
,,,,,,,,
,,內(nèi)跨X向總彎矩標(biāo)準(zhǔn)值,,,,,
,,,柱上,,跨中,,
,,,Mc,M3,Mc,M3,
,,,(kNm),(kNm),(kNm),(kNm),
,,彎矩系數(shù)C,0.0791,0.085,0.0791,0.085,
,,柱上與跨中分配系數(shù)K,0.75,0.55,0.25,0.45,
,,截面總彎矩(M總k*C),192.37,206.72,192.37,206.72,
,,板帶計(jì)算彎矩(M總k*K*C),144.28,113.70,48.09,93.02,
,,每延米彎矩(M總k*K*C/B),57.71,45.48,19.24,37.21,
,,,,,,,,
,,,,,,,,
,,內(nèi)跨X向總彎矩設(shè)計(jì)值,,,,,
,,,柱上,,跨中,,
,,,Mc,M3,Mc,M3,
,,,(kNm),(kNm),(kNm),(kNm),
,,彎矩系數(shù)C,0.0791,0.085,0.0791,0.085,
,,柱上與跨中分配系數(shù)K,0.75,0.55,0.25,0.45,
,,截面總彎矩(M總*C),247.05,265.47,247.05,265.47,
,,板帶計(jì)算彎矩(M總*K*C),185.28,146.01,61.76,119.46,
,,每延米彎矩(M總*K*C/B),74.12,58.41,24.71,47.79,
,,,,,,,,
,,,,,,,,
,,,,,,,,
,,,,,,,,
,(1)、柱上板帶最大負(fù)彎矩:,,Mc=74.12kN*m,,,,
,,,,,,,,
,抗彎配筋計(jì)算(簡化):,,As=74.12*1000000/(0.9*300*255)=1076mm2,,,,
,,,,,,,1076
,"配φ12@200(As=565),ρ=0.189%",,,不滿足!,,,
,,,,,,,,
,最大裂縫寬度:,,,,,,
,,,,,,,,
,,,,,,,,
,,,=0.682mm,,,,
,,,,,,,,
,(2)、柱上板帶最大正彎矩:,,M3=58.41kN*m,,,,
,抗彎配筋計(jì)算(簡化):,,As=58.41*1000000/(0.9*300*255)=848mm2,,,,
,,,,,,,848
,"配φ12@200(As=565),ρ=0.189%",,,不滿足!,,,
,,,,,,,,
,最大裂縫寬度:,,,,,,
,,,,,,,,
,,,,,,,,
,,,=0.488mm,,,,
,,,,,,,,
,(3)、跨中板帶最大負(fù)彎矩:,,Mc=24.71kN*m,,,,
,,,,,,,,
,抗彎配筋計(jì)算(簡化):,,As=24.71*1000000/(0.9*300*255)=358mm2,,,,
,,,,,,,358
,"配φ12@200(As=565),ρ=0.189%",,,,,,
,,,,,,,,
,最大裂縫寬度:,,,,,,
,,,,,,,,
,,,,,,,,
,,,=0.07mm,,,,
,,,,,,,,
,(4)、跨中板帶最大正彎矩:,,M3=47.79kN*m,,,,
,抗彎配筋計(jì)算(簡化):,,As=47.79*1000000/(0.9*300*255)=694mm2,,,,
,,,,,,,694
,"配φ12@200(As=565),ρ=0.189%",,,不滿足!,,,
,,,,,,,,
,最大裂縫寬度:,,,,,,
,,,,,,,,
,,,,,,,,
,,,=0.356mm,,,,
,,,,,,,,
,,,,,,,,
2、Y向彎矩及配筋計(jì)算:,,,,,,,
,,,,,,,,
,取內(nèi)跨計(jì)算,柱帽寬度取c=1.2m,板帶寬取B=4/2=2m,h0=300-45=255mm,,,,,,,
,,,,,,,,
,,,,,,,,
,則Y向總彎矩標(biāo)準(zhǔn)值:,,,,,,
,,M總k=qk*lx*(ly-2/3*c)2,,,,,
,,,,,,,,
,,=3351.6kN*m,,,,,
,,,,,,,
,,,,,,,,
,Y向總彎矩設(shè)計(jì)值:,,,,,,
,,M總=q*lx*(ly-2/3*c)2,,,,,
,,,,,,,,
,=1861.11kN*m,=4304.16kN*m,,,,,
,,,,,,,,
,,,,,,,,
,,內(nèi)跨Y向總彎矩標(biāo)準(zhǔn)值,,,,,
,,,柱上,,跨中,,
,,,Mc,M3,Mc,M3,
,,,(kNm),(kNm),(kNm),(kNm),
,,彎矩系數(shù)C,0.0791,0.085,0.0791,0.085,
,,柱上與跨中分配系數(shù)K,0.75,0.55,0.25,0.45,
,,截面總彎矩(M總k*C),265.11,284.89,265.11,284.89,
,,板帶計(jì)算彎矩(M總k*K*C),198.83,156.69,66.28,128.20,
,,每延米彎矩(M總k*K*C/B),99.42,78.34,33.14,64.10,
,,,,,,,,
,,內(nèi)跨Y向總彎矩設(shè)計(jì)值,,,,,
,,,柱上,,跨中,,
,,,Mc,M3,Mc,M3,
,,,(kNm),(kNm),(kNm),(kNm),
,,彎矩系數(shù)C,0.0791,0.085,0.0791,0.085,
,,柱上與跨中分配系數(shù)K,0.75,0.55,0.25,0.45,
,,截面總彎矩(M總*C),340.46,365.85,340.46,365.85,
,,板帶計(jì)算彎矩(M總*K*C),255.34,201.22,85.11,164.63,
,,每延米彎矩(M總*K*C/B),127.68,100.61,42.56,82.32,
,,,,,,,,
,,,,,,,,
,,,,,,,,
,(1)、柱上板帶最大負(fù)彎矩:,,Mc=127.68kN*m,,,,
,,,,,,,,
,抗彎配筋計(jì)算(簡化):,,As=127.68*1000000/(0.9*300*255)=1854mm2,,,,
,,,,,,,1854
,"配φ12@200(As=565),ρ=0.189%",,,不滿足!,,,
,,,,,,,,
,最大裂縫寬度:,,,,,,
,,,,,,,,
,,,,,,,,
,,,=1.345mm,,,,
,,,,,,,,
,(2)、柱上板帶最大正彎矩:,,M3=100.61kN*m,,,,
,抗彎配筋計(jì)算(簡化):,,As=100.61*1000000/(0.9*300*255)=1461mm2,,,,
,,,,,,,1461
,"配φ12@200(As=565),ρ=0.189%",,,不滿足!,,,
,,,,,,,,
,最大裂縫寬度:,,,,,,
,,,,,,,,
,,,,,,,,
,,,=1.01mm,,,,
,,,,,,,,
,(3)、跨中板帶最大負(fù)彎矩:,,Mc=42.56kN*m,,,,
,,,,,,,,
,抗彎配筋計(jì)算(簡化):,,As=42.56*1000000/(0.9*300*255)=618mm2,,,,
,,,,,,,618
,"配φ12@200(As=565),ρ=0.189%",,,不滿足!,,,
,,,,,,,,
,最大裂縫寬度:,,,,,,
,,,,,,,,
,,,,,,,,
,,,=0.291
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