Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Variable-diameter pile hole construction method suitable for deep large-particle-size pebble geology
The invention discloses a variable-diameter pile hole construction method suitable for deep and thick large-particle-size pebble geology, a rotary drilling rig is adopted for variable-diameter pile hole construction, a variable-diameter pile hole comprises a large-diameter pile hole and a small-diameter pile hole which are coaxially arranged, and an integrated drill bit is installed at the bottom of a drill rod of the rotary drilling rig. The integrated drill bit comprises a large-diameter drill bit for drilling the large-diameter pile hole and a small-diameter drill bit for drilling the small-diameter pile hole; when the large-diameter pile hole is drilled, the small-diameter drill bit is sleeved with the large-diameter drill bit, and the large-diameter drill bit and the small-diameter drill bit are fixedly connected with the bottom of the drill rod. When the small-diameter pile hole is drilled, the large-diameter drill bit is fixed to the drill rod through the sliding hoop to guide the drill rod. Coaxial arrangement of the large-diameter pile hole and the small-diameter pile hole of the variable-diameter pile can be guaranteed, and the thickness of a reinforcement protection layer of a reinforcement cage is protected; in the construction process, drill bits do not need to be replaced repeatedly, and construction efficiency is high.
本发明公开了一种适用于深厚大粒径卵石地质的变径桩桩孔施工方法，采用旋挖钻机进行变径桩桩孔施工，所述变径桩桩孔包括同轴设置的大直径桩孔和小直径桩孔，在所述旋挖钻机的钻杆底部安装有一体式钻头，所述一体式钻头包括钻进所述大直径桩孔的大直径钻头和钻进所述小直径桩孔的小直径钻头；钻进所述大直径桩孔时，所述大直径钻头套设在所述小直径钻头的外部，二者分别与所述钻杆的底部固定连接；钻进所述小直径桩孔时，所述大直径钻头通过滑动抱箍固定在所述钻杆上为所述钻杆进行导向。本发明能够保证变径桩的大直径桩孔与小直径桩孔同轴设置，保护钢筋笼的钢筋保护层厚度；并且施工过程中，无需来回更换钻头，施工效率高。
Variable-diameter pile hole construction method suitable for deep large-particle-size pebble geology
The invention discloses a variable-diameter pile hole construction method suitable for deep and thick large-particle-size pebble geology, a rotary drilling rig is adopted for variable-diameter pile hole construction, a variable-diameter pile hole comprises a large-diameter pile hole and a small-diameter pile hole which are coaxially arranged, and an integrated drill bit is installed at the bottom of a drill rod of the rotary drilling rig. The integrated drill bit comprises a large-diameter drill bit for drilling the large-diameter pile hole and a small-diameter drill bit for drilling the small-diameter pile hole; when the large-diameter pile hole is drilled, the small-diameter drill bit is sleeved with the large-diameter drill bit, and the large-diameter drill bit and the small-diameter drill bit are fixedly connected with the bottom of the drill rod. When the small-diameter pile hole is drilled, the large-diameter drill bit is fixed to the drill rod through the sliding hoop to guide the drill rod. Coaxial arrangement of the large-diameter pile hole and the small-diameter pile hole of the variable-diameter pile can be guaranteed, and the thickness of a reinforcement protection layer of a reinforcement cage is protected; in the construction process, drill bits do not need to be replaced repeatedly, and construction efficiency is high.
本发明公开了一种适用于深厚大粒径卵石地质的变径桩桩孔施工方法，采用旋挖钻机进行变径桩桩孔施工，所述变径桩桩孔包括同轴设置的大直径桩孔和小直径桩孔，在所述旋挖钻机的钻杆底部安装有一体式钻头，所述一体式钻头包括钻进所述大直径桩孔的大直径钻头和钻进所述小直径桩孔的小直径钻头；钻进所述大直径桩孔时，所述大直径钻头套设在所述小直径钻头的外部，二者分别与所述钻杆的底部固定连接；钻进所述小直径桩孔时，所述大直径钻头通过滑动抱箍固定在所述钻杆上为所述钻杆进行导向。本发明能够保证变径桩的大直径桩孔与小直径桩孔同轴设置，保护钢筋笼的钢筋保护层厚度；并且施工过程中，无需来回更换钻头，施工效率高。
Variable-diameter pile hole construction method suitable for deep large-particle-size pebble geology
一种适用于深厚大粒径卵石地质的变径桩桩孔施工方法
XIA CHENG (Autor:in) / WAN MENG (Autor:in) / LIU DAN (Autor:in) / LIU KANG (Autor:in) / LI QIUXIAN (Autor:in) / SHANG RUXIAN (Autor:in) / ZHOU JIE (Autor:in)
08.08.2023
Patent
Elektronische Ressource
Chinesisch
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