Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Cast-in-place pile hole-forming construction method for complex stratum
The invention relates to the technical field of cast-in-place pile hole forming, and discloses a cast-in-place pile hole forming construction method for complex stratums, which comprises the following construction steps: 1) adopting a pumping reverse circulation drilling machine to drive a large cone hob drill bit to form an upper section hole in a rock filling layer; (2) an outer pile casing is placed in the upper section hole; (3) a pumping reverse circulation drilling machine is adopted to drive a small cone hob drill bit to drill to form a middle section hole; (4) an inner pile casing is placed in the middle section hole, and a pile casing gap is formed between the upper portion of the inner pile casing and the outer pile casing; (5) a rotary drilling rig is adopted to drive a double-bottom bailing bucket cutting tooth drill bit to drill through the soil layer to form a lower section hole; (6) the rotary drilling rig is adopted to drive the cone rock-socketed drill barrel to drill into the hard rock stratum to form a bottom section hole; according to the cast-in-place pile hole forming construction method for the complex stratum, the problem of pulling out a steel casing is solved, hole collapse and necking of a silt layer are avoided, hole collapse in later construction is avoided, the drilling speed in a stone filling layer and the silt layer is higher, the construction period is shortened, the construction speed is high, and the construction period is shortened.
本发明涉及灌注桩成孔的技术领域，公开了用于复杂地层的灌注桩成孔施工方法，包括以下施工步骤：1)、采用泵吸反循环钻机带动大牙轮滚刀钻头在填石层中成型上段孔；2)、往上段孔内放置外护筒；3)、采用泵吸反循环钻机带动小牙轮滚刀钻头钻进形成中段孔；4)、往中段孔内放置内护筒，内护筒的上部与外护筒之间具有护筒间隙；5)、采用旋挖钻机带动双底捞砂斗截齿钻头钻穿土层形成下段孔；6)、采用旋挖钻机带动牙轮嵌岩钻筒钻进硬岩层形成底段孔；用于复杂地层的灌注桩成孔施工方法解决了起拔钢护筒的难题，避免淤泥层的塌孔、缩颈，避免后期施工塌孔，在填石层和淤泥层钻进速度更快，加快了工期，施工速度快，缩短了工期。
Cast-in-place pile hole-forming construction method for complex stratum
The invention relates to the technical field of cast-in-place pile hole forming, and discloses a cast-in-place pile hole forming construction method for complex stratums, which comprises the following construction steps: 1) adopting a pumping reverse circulation drilling machine to drive a large cone hob drill bit to form an upper section hole in a rock filling layer; (2) an outer pile casing is placed in the upper section hole; (3) a pumping reverse circulation drilling machine is adopted to drive a small cone hob drill bit to drill to form a middle section hole; (4) an inner pile casing is placed in the middle section hole, and a pile casing gap is formed between the upper portion of the inner pile casing and the outer pile casing; (5) a rotary drilling rig is adopted to drive a double-bottom bailing bucket cutting tooth drill bit to drill through the soil layer to form a lower section hole; (6) the rotary drilling rig is adopted to drive the cone rock-socketed drill barrel to drill into the hard rock stratum to form a bottom section hole; according to the cast-in-place pile hole forming construction method for the complex stratum, the problem of pulling out a steel casing is solved, hole collapse and necking of a silt layer are avoided, hole collapse in later construction is avoided, the drilling speed in a stone filling layer and the silt layer is higher, the construction period is shortened, the construction speed is high, and the construction period is shortened.
本发明涉及灌注桩成孔的技术领域，公开了用于复杂地层的灌注桩成孔施工方法，包括以下施工步骤：1)、采用泵吸反循环钻机带动大牙轮滚刀钻头在填石层中成型上段孔；2)、往上段孔内放置外护筒；3)、采用泵吸反循环钻机带动小牙轮滚刀钻头钻进形成中段孔；4)、往中段孔内放置内护筒，内护筒的上部与外护筒之间具有护筒间隙；5)、采用旋挖钻机带动双底捞砂斗截齿钻头钻穿土层形成下段孔；6)、采用旋挖钻机带动牙轮嵌岩钻筒钻进硬岩层形成底段孔；用于复杂地层的灌注桩成孔施工方法解决了起拔钢护筒的难题，避免淤泥层的塌孔、缩颈，避免后期施工塌孔，在填石层和淤泥层钻进速度更快，加快了工期，施工速度快，缩短了工期。
Cast-in-place pile hole-forming construction method for complex stratum
用于复杂地层的灌注桩成孔施工方法
HATA SHOGO (Autor:in) / ZHANG LINGSHUAI (Autor:in) / QIAO SHUANGSHUANG (Autor:in) / YAO JINGYU (Autor:in)
14.06.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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