价值工程
價值工程
개치공정
VALUE ENGINEERING
2014年
2期
129-129,130
,共2页
旋挖钻机%回转钻机%合成孔
鏇挖鑽機%迴轉鑽機%閤成孔
선알찬궤%회전찬궤%합성공
rotary drilling rig%slewing drilling machine%synthetic aperture
海南洋浦大桥5#墩钻孔灌注桩直径2.2m，钻孔深度达118m，地层复杂，仅用回转钻机成孔，即耗费了材料，还延长了工期；仅用旋挖钻机成孔，又难以完成，这样用旋挖钻机和回转钻机接力合成孔，弥补了单独用一种钻机施工的不足，即节省了施工成本又缩短了工期，大大提高了施工效率。
海南洋浦大橋5#墩鑽孔灌註樁直徑2.2m，鑽孔深度達118m，地層複雜，僅用迴轉鑽機成孔，即耗費瞭材料，還延長瞭工期；僅用鏇挖鑽機成孔，又難以完成，這樣用鏇挖鑽機和迴轉鑽機接力閤成孔，瀰補瞭單獨用一種鑽機施工的不足，即節省瞭施工成本又縮短瞭工期，大大提高瞭施工效率。
해남양포대교5#돈찬공관주장직경2.2m，찬공심도체118m，지층복잡，부용회전찬궤성공，즉모비료재료，환연장료공기；부용선알찬궤성공，우난이완성，저양용선알찬궤화회전찬궤접력합성공，미보료단독용일충찬궤시공적불족，즉절성료시공성본우축단료공기，대대제고료시공효솔。
The diameter of Hainan Yangpu bridge 5# pier bored piles is 2.2m, the drilling depth is 118m, the formation is complex, only using slewing drilling machine costs material and has also extended the time limit for the project; only using rotary drilling rig is difficult to complete, so with the two machines to make synthetic aperture, made up for the inadequacy, it saves construction cost and shortens the time limit for the project, greatly improves the construction efficiency.
