After precast on precasting yard , the caisson is jacked up by jacks , pushed by hydraulic pushing system , moved by transition carriages and launched with inclined frame bogie into water for transport .
沉箱在预制台座上预制完成后，通过千斤顶组顶升，步行式液压顶推系统顶推，纵横移车运移，斜架车溜放，将沉箱从预制场出运下水。
pushed;pushing