双线桥墩采用跃进型桩架打φ55cm钢筋混凝土管桩时,除纵向走动外,还需横向走动。特别是在换向走动时,不但需把桩架顶起将走行轮换向,还需重新铺设轨道,比较费工。三处一队的工人和技术人员,在实践中摸索到将桩架上盘走道接长的办法,可不作换向 When the double-line piers are lengthened by a type of piling frame and used to make φ55cm reinforced concrete pipe piles, they should be moved horizontally in addition to the vertical ones. Especially in the commutation walk, not only the top of the pile frame will be driven to change direction, but also need to re-laying the track, more labor. A team of three workers and technicians groped in practice, the pile rack hanging plate a long way to access, without commutation