Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Drilled rooted bottom-end-expanded bearing pile and construction method thereof
The invention relates to a drilled rooted expanded-bottom end bearing pile which is provided with a tubular pile and a cast-in-place reinforced concrete base, the upper end of the tubular pile is exposed out of the ground, the lower end of the tubular pile is connected with the cast-in-place reinforced concrete base rooted on a lower bearing layer, and the periphery of the tubular pile below the ground is filled with filler. The invention further designs a construction method of the drilled rooted bottom-end-expanded bearing pile. The construction method comprises the steps that the reinforcement cage is welded to the lower end of the pipe pile; placing a pile casing after on-site lofting and positioning; forming holes according to the construction requirements of the cast-in-situ bored pile, and enabling the drilled holes to enter a bearing stratum; lowering the tubular pile and reinforcement cage connector into the drill hole; a guide pipe is lowered from the interior of the pipe pile to the bottom of the drilled hole, hole cleaning is started firstly, underwater concrete is poured after the specific gravity of sediment and slurry meets the design requirement, and a cast-in-place reinforced concrete base is formed; pulling out the guide pipe, lowering a connector of the pipe pile and the reinforcement cage to the bottom of the drill hole, and enabling the bottom end of the connector to enter a bearing stratum; and the space between the tubular pile and the pile casing is filled with filler, then the pile casing is pulled out, and pile forming is finished.
本发明涉及一种钻孔根植扩底端承桩，具有管桩和现浇钢筋混凝土底座，其中管桩上端露出地面，下端连接根植于下方持力层上的现浇钢筋混凝土底座，在地面以下的管桩周围填有填料。本发明还设计一种所述钻孔根植扩底端承桩的施工方法：在管桩下端部焊接钢筋笼；现场放样定位后安置护筒；按钻孔灌注桩施工要求进行造孔，钻孔进入持力层；下放管桩与钢筋笼连接体至钻孔内；从管桩内下导管至钻孔孔底，先开始清孔，待沉渣和泥浆比重满足设计要求后，再灌注水下混凝土，形成现浇钢筋混凝土底座；拔出导管，下放管桩与钢筋笼连接体至钻孔底，使连接体底端进入持力层；在管桩与护筒之间间填充填料，然后拔出护筒，成桩结束。
Drilled rooted bottom-end-expanded bearing pile and construction method thereof
The invention relates to a drilled rooted expanded-bottom end bearing pile which is provided with a tubular pile and a cast-in-place reinforced concrete base, the upper end of the tubular pile is exposed out of the ground, the lower end of the tubular pile is connected with the cast-in-place reinforced concrete base rooted on a lower bearing layer, and the periphery of the tubular pile below the ground is filled with filler. The invention further designs a construction method of the drilled rooted bottom-end-expanded bearing pile. The construction method comprises the steps that the reinforcement cage is welded to the lower end of the pipe pile; placing a pile casing after on-site lofting and positioning; forming holes according to the construction requirements of the cast-in-situ bored pile, and enabling the drilled holes to enter a bearing stratum; lowering the tubular pile and reinforcement cage connector into the drill hole; a guide pipe is lowered from the interior of the pipe pile to the bottom of the drilled hole, hole cleaning is started firstly, underwater concrete is poured after the specific gravity of sediment and slurry meets the design requirement, and a cast-in-place reinforced concrete base is formed; pulling out the guide pipe, lowering a connector of the pipe pile and the reinforcement cage to the bottom of the drill hole, and enabling the bottom end of the connector to enter a bearing stratum; and the space between the tubular pile and the pile casing is filled with filler, then the pile casing is pulled out, and pile forming is finished.
本发明涉及一种钻孔根植扩底端承桩，具有管桩和现浇钢筋混凝土底座，其中管桩上端露出地面，下端连接根植于下方持力层上的现浇钢筋混凝土底座，在地面以下的管桩周围填有填料。本发明还设计一种所述钻孔根植扩底端承桩的施工方法：在管桩下端部焊接钢筋笼；现场放样定位后安置护筒；按钻孔灌注桩施工要求进行造孔，钻孔进入持力层；下放管桩与钢筋笼连接体至钻孔内；从管桩内下导管至钻孔孔底，先开始清孔，待沉渣和泥浆比重满足设计要求后，再灌注水下混凝土，形成现浇钢筋混凝土底座；拔出导管，下放管桩与钢筋笼连接体至钻孔底，使连接体底端进入持力层；在管桩与护筒之间间填充填料，然后拔出护筒，成桩结束。
Drilled rooted bottom-end-expanded bearing pile and construction method thereof
钻孔根植扩底端承桩及其施工方法
CHEN WENHUA (Autor:in) / ZENG CHAO (Autor:in) / ZHANG MENG (Autor:in)
02.08.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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