《汽车吊吊装计算书》由会员分享,可在线阅读,更多相关《汽车吊吊装计算书(9页珍藏版)》请在金锄头文库上搜索。
1、汽车吊吊装计算书附件:附件1:汽车吊吊装计算书 根据相关规范、技术规程规定要求,根据吊装重量计算确定吊车型号应考虑 安全系数,同时结合本项目特点考虑采用双机抬吊方式吊装的折减系数,复核验 算如下:一、预制小箱梁吊装汽车吊工况及验算本项目后张法预应力20m砼预制箱梁单片边梁梁长20m,高1.176米,中板 顶宽2.4米,板底宽1.0米,重量为51.251。预制小箱梁计划采用汽车吊双机 抬吊,吊装钢丝绳位置选择在距构件两端1.5m的位置。运输便道及吊装平台地面标高为20.3m,设计桥面标高为24.207m(北0# 台厂24.427m(中1#墩厂24.644m(南2#台),桥面结构层厚度为0.2m,
2、则设计小 箱梁面标高为24.007m(北0#台厂24.227m(中1#墩厂24.444m(南2#台)。1. 汽车吊的选型及验算(1)0#-1#跨吊装:计划采用一台130T,一台300T汽车吊吊装小箱梁,吊装钢丝绳位置选择在 距构件两端1.5m的位置,130T吊车停机在0#桥台,300T吊车停机在施工平台, 先吊装主梁7主梁4四片箱梁,然后130T吊车站位不变,300T吊车收臂移车到 施工便道,吊装主梁 3主梁 1 三片箱梁。具体汽车吊站位详见附图。(2)1#-2#跨吊装:同0#-1#跨吊装。最不利工况:3001吊车站位0#-1#跨施工平台,吊装最左侧边梁(主梁7), 边梁设计混凝土20.5 方
3、,重 51.25 吨。(3)QY130T汽车吊选型验算1) QY130K 汽车起重机起升性能表表1主臂起重性能表(kg, m)38吨配重、全伸支腿性能表1317.1421.2825.4229.5633.737.8441.9846.1250.2654.4583130.0108.033.5125.0102.03.54115.0 98.0 90.0 75.044.5105.091.085.072.060.04.5598.085.076.568.555.050.05685.078.069.262.053.645.038.06770.070.062.856.550.543.036.528.57860.0
4、60.057.051.246.540.535.028.025.08952.052.050.047.043.637.532.527.524.020.091045.045.545.343.039.235.830.026.522.018.016.513.5101239.038.537.534.331.527.023.720.616.515.512.5121429.629.330.130.227.024.820.818.815.313.512.0141623.123.924.024.022.018.617.114.013.011.5161818.519.419.619.919.617.215.513.
5、212.010.5182016.016.216.517.316.313.912.511.510.0202213.313.513.914.614.612.111.511.09.3222411.411.712.512.511.210.810.58.624269.610.010.810.710.510.010.08.026288.59.39.39.59.59.57.528307.28.08.08.28.68.87.130327.07.07.27.57.96.632346.06.06.26.67.06.234365.25.45.86.25.636384.75.05.45.338404.04.44.84
6、.940423.84.24.342443.33.73.844463.23.346482.82.948502.550522.15254545656倍率121087654332222) 130 汽车吊起重重量计算G 总 = Q1 Q2=51.25 2=53.25t式中:Q1为单片小箱梁的自重,在此取Q1 =51.25吨;Q2 吊车吊钩及索具的重量,Q2=2吨;双机抬吊按一台QY130T型汽车吊负荷平均分配,即单机实际承担的理论载 荷为26.631,考虑动载系数1.2,安全吊装预制小箱梁的全重(单机承担的) =26.63 X 1.2=31.951。3) 1301汽车吊工作半径R计算R=SQRT(L1
7、+L1/2)* (L1+L1/2)+ (L2+ L3+L0/2)* (L2+ L3+L0/2)=SQRT(2.95*2+2.95/2)*(2.95*2+2.95/2)+(2+1.5+7.6/2)*(2+1.5+7.6/2) )=10.03m式中:L1相邻两片小箱梁轴心间距,Ll=2.95m;L2最不利工况(汽车吊停机点在围堰地面)吊装时,吊臂与小箱梁端 头间的水平方向的安全距离,L2取2m;吊臂与回转机构间的间 距不另计。L3小箱梁端头至绑扎吊点间的距离,L3取1.5m。L0QY130K 支腿纵向间距,旋转机构位于支腿对称中心考虑,L0=7.6m。4) 130t汽车吊最小起升高度H计算H=h1
8、-h+h0+h2+h3+h4= (24.444-20.3)-1.6+1.176+0.2+1.2+2=7.12mV13m基本臂最大起升高度。式中:h1最不利工况为吊装边梁,汽车吊停机点2#墩东侧桥下围堰地面 至小箱梁面高度;hQY130T汽车吊旋转机构离地高度,h=1.6m;hO小箱梁梁高,h0=1.176m;h2小箱梁安装间隙,一般取0.20.3m,取h2 = 0.2m;h3吊索吊点与小箱梁面的最小距离,按吊索与梁面的水平夹角等于 45度时取值,取h3 = 1.2m;h4一起重臂顶至吊钩底面的安全距离(m),取h4=2m。5) 130t汽车吊起重臂长度L计算:L=SQRT(R*R+H*H)=
9、SQRT(8.29*8.29+7.12*7.12) =10.92mV13m主臂基本臂长。综上:本工程130t吊车工作半径R=10.03m,综合考虑(2)、(3)、(4)及 起重机的工作幅度,参考130T吊车性能参数表,130吨吊车10.03 m的作业半 径,臂长为17.14m, 38t平衡重额定起重量为45.5131.951,选择QY130T汽 车吊可满足最不利工况时吊装,符合要求。(4) QAY300汽车吊选型验算1) QAY300汽车吊起重性能表表2主臂工况起重量表 支腿87m,平衡重85t度n) 幅5臂长(m)31.435.935.935.940.440.440.444.944.944.
10、949.433.544.51165111.26103.977.19292797.973.4878746.37171888.769.58281.943.270.77133.258.158.1980.366.37775.540.167.969.231.756.756.7311075.162.67069.237.365.164.829.95454.6311263.756.86560.233.459.255.626.947.15327.51454.650.657.152.329.954.148.724.142.147.125.81646.245.748.646.327.347.843.421.637.
11、141.723.51838.84241.839.824.94238.82033.737.120.82033.637.236.734.62336.735.518.530.433.4202229.73332.230.521.332.531.216.82830.618.42425.63028.126.519.928.927.315.825.928.116.8262126.524.823.118.725.623.914.823.624.716.22823.72220.217.622.821.113.621.92214.93020.419.617.316.620.418.612.92019.513.83215.718.316.612.118.117.613.63414.915.714.111.616.315.712.836