5X40m预应力混凝土简支箱形梁桥设计毕业设计

制河流的纵断面图。(见表1—1,图1—1)表1—1桩号51+73.2551+82.0551+83.8551+91.2551+121.25标高1129.871129.671129.071129.271129.27桩号51+121.2551+131.2551+134.2551+151.2551+161.25标高1128.671129.871130.471131.271131.47由于该河段有人工修筑的河堤,破坏了原有的摊槽,于是根据河堤内部的桩号及标高计算国税面积及睡眠宽度。(见表1—2)表1-2过水面积、水面宽度计算表桩号河床标高(m)水深(m)平均水深(m)水面宽度(m)过水面积(m2)合计51+73.251129.872.6------B=88mA=236.9m251+82.051129.672.82.78.823.7651+83.851129.073.33.051.85.4951+91.251129.273.23.257.424.0551+121.251129.273.23.2309651+131.251128.673.83.5103551+132.251129.872.63.213.251+134.251130.4722.324.651+151.251131.271.21.41723.851+161.251131.471.02.11021粗糙系数n=0.03,i=0.08%236.9 88 2.7ch m? ?2 31 2 2 3 1 21 1 3 2.7 (0.0008) 1.82V nR i m s? ????3VA 236.9 1.82 431.6Q m sp? ???图1-1X河纵断面图(纵坐标:3:100;横坐标:1:500)