excel计算大全-房建-吊车梁计算1
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吊车梁的截面选择一.截面尺寸的确定:(1).梁的高度:①.经济要求:梁的平面内最大弯矩设计值:M xmax=464700000N·MM,支座处的最大剪力V max=梁选用钢材材质Q235,f=215N/mm2fv=Q345,f=315N/mm2fv=f=315N/mm2fv=梁需要的截面抵抗矩:W= 1.2*M xmax/f=1770286梁的经济截面高度:H=7*(W)^(1/3)-300=547②.刚度要求:对中级且Q<500KN,[l/w]=600,梁的跨度l=6000mm超过此限[l/w]=750取[l/w]=600,[w/l]=0.001667梁刚度要求的最小高度:Hmin=0.56*f*l/([w/l]*106)=③.建筑净空要求:H≤建筑净空要求根据以上三条要求确定吊车梁的高度,H=700mm二.腹板厚度Tw的确定:①.经验公式:T w=7+3h=10mm②.根据抗剪要求:T w≥ 1.2V max/h w fv= 2.9630843mm③.局部挤压应力的要求:数据准备:考虑动力系数的一个车轮的最大轮压a P max=136集中荷载增大系数,对轻、中级工作制吊车梁Y=1.0,对重级工作制吊车梁Y=1.35Y=1g Q= 1.4钢轨高度:140mm,吊车梁翼缘厚度t(暂估):轨顶至腹板计算高度上边缘的距离:h y=钢轨高度+吊车梁翼缘厚度t=车轮对腹板边缘挤压应力的分布长度,取L z=2h y+50=358T w≥aYg Q P max/(l w*f)=2mm根据以上三条要求暂估T w=8mm三.翼缘尺寸:翼缘所需的面积:A1=W x/H w-1/6HwTw=1696.6947根据翼缘的局部稳定判断翼缘不考虑局部稳定的最大宽度:b=336根据上面的翼缘最大宽度取b=330mm下翼缘厚度取10mm,下翼缘宽度Bb=300mm本吊车梁尺寸取如下值:吊车梁高度H=700mm上翼缘宽度Bt=330mm上翼缘厚度Tt=14mm下翼缘宽度Bb=300mm下翼缘厚度Tb=10mm腹板厚度Tw=8mm腹板高度Hw=676mm 根据上值转入《吊车梁截面计算》工作簿.支座处的最大剪力V max=310.63KN125N/mm2185N/mm2185N/mm2(板厚≤16mm) mm3mm636mm腹板高度暂定H w=680mmKN工作制吊车梁Y=1.3514mm车梁翼缘厚度t=154mmmmmm。
双轮距吊车梁的计算一、荷载计算1、吊车梁自重及埋件重h=0.65hf=0.15b=0.25mbf=0.50m轨道及埋件每米重=0.71KN/m 轻级动力系数=1.10吊车G 1=5.29小车G2=2.00重物G 3=10.00T吊车跨度Lk=8.74m主钩至吊车梁轨道的极限距离l1=0.59m一根吊车梁上的轮数m=2个吊车计G1=6.35小车计G2=2.40吨重物计G3=14.00梁重及埋件重P=46.68KN 2、垂直轮压垂直轮压P=99.69KN 吊车均布荷合计q =7.83KN/m3、横向水平力横向水平力T 0= 4.02KN二、吊车梁的内力计算(一)垂直力作用1、弯矩计算P 1=100KN P 2=100KN 车距宽b = 1.8m L=5.96m P=199KNX=3.58m a =0.600满足a =0.600试算值X 1=2.68mX 2=4.48最大弯矩M max =275KN*m1、剪力计算最大剪力Q max =193KN(二)横向水平力作用下弯矩及剪力 横向最大弯矩M max = 5.99KN*m 横向最大剪力Q max = 2.01(三)扭矩计算竖向力偏心矩e 1=0.02m轨道高度=0.18me 2=0.38mm T =3.52KN*m三、吊车梁配筋计算(一)纵向配筋钢筋强度fy=310N/mm2138抗弯纵向钢筋面积AS=1844抗扭纵向钢筋总面积An=138纵向钢筋总面积AS=1983mm2受压区As=292拉配筋d1=22mm 根数n=3受拉筋d2=22根数n=3实配A s=2280.8满足压配筋d1=20mm根数n=2受拉筋d 2=22根数n=0实配A s=628.32满足(一)配箍筋1.43满足安全系数K=1.55截面应满足的条件为1.54满足混凝土的轴心抗压强度fc=10N/mm2配单筋双层混凝土的抗拉强度f t = 1.1N/mm2 按计算配筋箍筋保护层a s=0.025m 箍筋直径d=8mm满足筋距S=120mm钢筋强度fy=210N/mm21、方法一抗扭单支箍的面积As=17.33抗剪单支箍的面积As=29.38配单支箍总面积As=46.71mm2 实配单支箍总面积As=50.271、方法二 受扭箍筋As t1=0.3823 受剪箍筋Asv =25.37配单支箍总面积As=25.75mm2Wt=0.018m3βt =0.5000.146ζ=1.38配单支箍实际总面积As=46.71FALSE三、吊车梁挠度验算0.24吊车轮距K=1.800m横轴系数=0.302k 1=0.040Bd=1.01864E+14Bc=9E+139.93长期荷载Mc=34.78短期荷载Md=218.427M 253KN*m fcmax=10.87不满足四、吊车梁裂缝宽度验算纵向受拉钢筋直径d=2.2cm平均裂缝间距lf=111mm计算受拉钢筋应力fy=222N/mm2裂缝宽度δfmax =0.246满足吊车梁正截面配筋计算公式砼f c=10N/m ㎡砼fc m=11N/m ㎡ 钢 f g=310N/m ㎡梁高h=650mm梁宽 b=250mm弯矩M =275KNm剪力V =193KN370.989398.99365.625单筋承受弯矩 Mumax=371KN 配单筋截面条件满足梁高h 0=585满足FALSE1、单筋公式:保护层a s=65mmh 0 =585a=1375b=-2E+06c=3E+08判别式 =1E+12有解962208截面受压X =208A s=1844.43565梁高h 0=5850.540.612、双筋公式:拉保护层a s=65mm 压保护层as=65mm 00.544761.4370.989398.9872941A s 1=受压A s =受拉A s 总=0m ㎡双筋承受弯矩 Mu1=370.99剪力V =1933、斜截面配筋:配弯起筋直径d 弯=22mm 弯筋角度 a45根数n=0箍筋面积As 剪 =29.38 箍钢 f g=210N/m ㎡箍筋直径ds 剪 =6箍筋设计间距@ =120mm支数n =2弯钢 f g=310N/m ㎡砼f c=10N/m ㎡102.3750荷载剪力V=193荷载剪力V=截面有效h 0=585mm 0.07f c*b*h 0=######需配筋箍抗剪V=193满足总抗剪V=193满足。
一台吊车(两个轮子)吊车梁计算1.输入吊车参数跨度(mm)轮压P(t)轮距(mm)车宽(mm)P设计值800016.550006330245.0798起重量Q小车重g水平荷载T2T弯矩Mt103 5.3562610.7125210126.682.输入截面参数上翼缘B1上翼缘t1下翼缘B2下翼缘t2腹板ho腹板tw螺孔位置ao 32012200124766903.强度验算Af1n Af2n Awn An3324240028568580中和轴yn Ixn Wxn1Wxn2Iyn1Wyn1fy正应力1 223.72313887848621737795140722928588400178677.5235323.3094.整体稳定验算Af1Af2Aw面积A3840240028569096中和轴y Ix Wx1Wx2Iy Wy iy211.372411857405194849514269494076800025480066.94752I1I2eitaB kesi beitaB lambdaY faiB faiB1 3276800080000000.4860280.60.838119.49660.9939590.7612395.挠度验算挠度 mm v/L24.9661320.43448两台吊车(三个轮子)吊车梁计算跨度L轮压P1轮压P2轮距a1轮距a2车宽B1车宽B2a1 6000 3.767.32500300030003500500起重量Q1起重量Q2小车重g1小车重g2水平刹车T1水平刹车T2弯矩Mt 5101 1.5 2.47212 4.7382310748.37上翼缘B1上翼缘t1下翼缘B2下翼缘t2腹板ho腹板tw螺孔位置ao 3001220012476890Af1n Af2n Awn An3072240038089280中和轴yn Ixn Wxn1Wxn2Iyn1Wyn1fy正应力1 232.3313947839641699230147489622723200151488235215.7027Af1Af2Aw A3600240038089808中和轴y Ix Wx1Wx2Iy Wy iy220.14684203751061909522150212735000000233333.359.73705I1I2eitaB kesi beitaB lambdaY faiB faib1 2700000080000000.4342860.480.8164100.4402 1.4136680.847275挠度v/L7.303707821.50068两台吊车(四个轮子)吊车梁计算跨度L轮压P1轮压P2轮距a1轮距a2车宽B1车宽B2a3 6000 3.767.32500300030003500500起重量Q1起重量Q2小车重g1小车重g2水平刹车T1水平刹车T22T1+2T2 5101 1.5 2.47212 4.7382314.4207上翼缘B1上翼缘t1下翼缘B2下翼缘t2腹板ho腹板tw螺孔位置ao 3001220012476890Af1n Af2n Awn An3072240038089280中和轴yn Ixn Wxn1Wxn2Iyn1Wyn1fy正应力1 232.3313947839641699230147489622723200151488235205.9632Af1Af2Aw面积A3600240038089808中和轴y Ix Wx1Wx2Iy Wy iy220.14684203751061909522150212735000000233333.359.73705I1I2eitaB kesi beitaB lambdaY faiB faib1 2700000080000000.4342860.480.8164100.4402 1.4136680.847275挠度v/L6.965991861.327592P ao弯矩(Nm)剪力(kN)490.15962500463354336.9847孔径do梁高h21.5500正应力2剪应力329.267176.9878正应力1352.1305P1设计值P2设计值P1+2P2a0弯矩M剪力V 55.84849108.4292272.7071090.414245964.9200.4208孔径do h22500正应力2剪应力166.767678.94727正应力1198.0927P1设计值P2设计值2P1+2P2ao弯矩M(Nm)剪力V(kN) 55.84849108.4292328.5555-395.118234591.7142.6414ao Mt-385.71410286.89孔径do梁高h22500正应力2剪应力159.056456.18752正应力1189.0853。
简 支基本数据输入:梁跨度: l=9000mm梁间距a=2400mm钢材:Q 345f =315N/mm 2fv =185N/mm 2 上翼缘:b 1=400mm t 1=14mm 下翼缘:b 2=300mm t 2=12mm 腹 板:h w =574mm t w =8mm即: 断面BH 600x8x400x 14x300x12截面特性钢梁截面:A 0=13792mm 2 重量108.3kg/m 钢梁中和轴的位置:y 0=342mm钢梁对X轴截面惯性矩:I z =8.94E+08mm 4钢梁上翼缘的弹性抵抗矩:W 1x =3.46E+06mm 3钢梁下翼缘的弹性抵抗矩:W 2x =2.61E+06mm 3 钢梁对Y轴截面惯性矩:I y =1.02E+08mm 4i y = 85.9mm y = 104.8上翼缘对Y 轴的惯性矩:I 1=7.47E+07mm 4下翼缘对Y 轴的惯性矩:I 2=2.70E+07mm 40.73截面不对称影响系数:0.380.53工字形截面简支梁的系数 0.76梁的整体稳定系数: 0.74修正后: 0.672.截面验算:(1)弯矩及剪力的计算:钢梁自重: 1.30KN/m恒载: 4.00KN/m2=10.90KN/mg1k活载:q c= 3.0KN/m2p k=18.10KN/m p=23.16KN/m 弯矩:M=234.49KN·m剪力:V=104.22KN(2)钢梁的强度、稳定和挠度的验算:梁的整体稳定应力:σ= 101.01N/mm2钢梁上翼缘应力:σ1= 67.70N/mm2钢梁下翼缘应力:σ2= 89.68N/mm2钢梁剪应力:τ= 22.70N/mm2挠度:w= 8.4mmw/l=1/1072。
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