采用钻孔桩施工，从成孔、吊放钢筋笼到灌注水下混凝土，工序转换较多。我们通过多年实践，研制了集多道工序为一机的施工机架（图１），多道工序可由一机承担，工序连续，操作简单，工效高。１工艺特点（１）机架设置Ｕ形顶梁，保证悬吊的钢筋笼对中焊接。一次自吊钢筋笼... The use of bored piles has resulted in more process conversions from hole forming and lifting cages to pouring underwater concrete. Through many years of practice, we have developed a construction rack with multiple processes as a single machine (Figure 1). Multiple processes can be undertaken by one machine, with continuous processes, simple operation, and high work efficiency. 1 Process characteristics (1) The U-shaped top beam is installed on the rack to ensure that the suspended cage is centered on the welding. A self-hung reinforcement cage...