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Construction method for ultra-long large-diameter drilling pouring pile
The invention relates to a construction method of an ultra-long large-diameter drilling pouring pile. The construction method includes the steps that S1, construction preparation is conducted; S2, construction of a drilling pouring pile hole forming system is conducted; S3, pumping reverse circulation drilling machine construction is conducted; S4, hole cleaning and grout replacing are conducted;S5, reinforcement cage manufacturing and positioning are conducted; S6, underwater concrete pouring is conducted; and S7, pile foundation detection is conducted. The construction method has the beneficial effects that a large-diameter drill rod multi-section type progressive cone and tapered cone combined drill bit is used for drilling forming, the advantages of different drill bits in drilling indifferent stratums are sufficiently achieved, the drilling forming perpendicularity and the construction efficiency can be effectively improved. A steel protection cylinder with an embedded tooth wing ring on the top is connected with a drilling platform, disturbance on surrounding soil is low, the risk of surrounding pile foundation hole collapse is effectively avoided, and normal use of other accessories and running equipment and running safety are ensured.
本发明涉及超长大直径钻孔灌注桩的施工方法，包括步骤：S1、施工准备；S2、钻孔灌注桩成孔系统施工；S3、泵吸反循环钻机施工；S4、清孔换浆；S5、钢筋笼制作与定位；S6、水下混凝土灌注；S7、桩基检测。本发明的有益效果是：本发明采用大直径钻杆多段式渐进牙轮和锥型牙轮组合钻头钻进成孔，充分发挥了不同钻头在不同地层中钻进的优势，可有效提高钻进成孔的垂直度和施工效率；利用顶部设置有带嵌合齿翼环的钢护筒与钻孔平台相连接，对周围土质扰动小，有效避免了周围桩基塌孔的风险，保证其他附属物和运营设备的正常使用和行车安全。
Construction method for ultra-long large-diameter drilling pouring pile
The invention relates to a construction method of an ultra-long large-diameter drilling pouring pile. The construction method includes the steps that S1, construction preparation is conducted; S2, construction of a drilling pouring pile hole forming system is conducted; S3, pumping reverse circulation drilling machine construction is conducted; S4, hole cleaning and grout replacing are conducted;S5, reinforcement cage manufacturing and positioning are conducted; S6, underwater concrete pouring is conducted; and S7, pile foundation detection is conducted. The construction method has the beneficial effects that a large-diameter drill rod multi-section type progressive cone and tapered cone combined drill bit is used for drilling forming, the advantages of different drill bits in drilling indifferent stratums are sufficiently achieved, the drilling forming perpendicularity and the construction efficiency can be effectively improved. A steel protection cylinder with an embedded tooth wing ring on the top is connected with a drilling platform, disturbance on surrounding soil is low, the risk of surrounding pile foundation hole collapse is effectively avoided, and normal use of other accessories and running equipment and running safety are ensured.
本发明涉及超长大直径钻孔灌注桩的施工方法，包括步骤：S1、施工准备；S2、钻孔灌注桩成孔系统施工；S3、泵吸反循环钻机施工；S4、清孔换浆；S5、钢筋笼制作与定位；S6、水下混凝土灌注；S7、桩基检测。本发明的有益效果是：本发明采用大直径钻杆多段式渐进牙轮和锥型牙轮组合钻头钻进成孔，充分发挥了不同钻头在不同地层中钻进的优势，可有效提高钻进成孔的垂直度和施工效率；利用顶部设置有带嵌合齿翼环的钢护筒与钻孔平台相连接，对周围土质扰动小，有效避免了周围桩基塌孔的风险，保证其他附属物和运营设备的正常使用和行车安全。
Construction method for ultra-long large-diameter drilling pouring pile
超长大直径钻孔灌注桩的施工方法
LIU ZUXIONG (author) / ZHANG JINCHENG (author) / HUANG SHUCHI (author) / CHEN YU (author) / LIU BINGXIANG (author)
2020-05-26
Patent
Electronic Resource
Chinese
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