Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Full-rotation double-sleeve pile forming structure of cast-in-place pile
The invention relates to the technical field of cast-in-place pile construction in karst development areas, and discloses a cast-in-place pile full-rotation double-casing pipe pile forming structure which comprises a full-rotation drilling machine, a rotary drilling rig, an outer casing pipe and an inner casing pipe, the outer casing pipe and the inner casing pipe are driven by the full-rotation drilling machine to be screwed into a soil body, and the outer casing pipe is screwed into a first stepped hole. The inner sleeve is screwed in to form a second stepped hole connected below the first stepped hole. The lower portion of the second stepped hole is connected with a rock-socketed hole which is coaxially arranged, and the first stepped hole, the second stepped hole and the rock-socketed hole are sequentially connected from top to bottom to form a stepped rock-socketed pile hole. The casing pipe and the inner casing pipe are screwed in while soil is taken through the rotary drilling rig. An annular interval is formed between the outer sleeve and the inner sleeve, the inner sleeve is sleeved with a positioning structure, the positioning structure is located in the annular interval, and the positioning structure is provided with a distance sensor for measuring the concentric and coaxial precision between the outer sleeve and the inner sleeve. The requirement for positioning precision is met through adjustment of the positioning structure, friction force between the sleeves is reduced, and the sleeves can be conveniently pulled out.
本发明涉及岩溶发育地区灌注桩施工技术领域，公开了灌注桩全回转双套管成桩结构，包括全回旋钻机、旋挖钻机、外套管以及内套管，外套管和内套管分别由全回旋钻机带动旋进土体中，外套管旋进形成第一阶梯孔；内套管旋进形成衔接在所述第一阶梯孔下方的第二阶梯孔；第二阶梯孔的下方衔接有同轴布置的嵌岩孔，第一阶梯孔、第二阶梯孔及嵌岩孔自上而下依次衔接形成阶梯状的嵌岩桩孔；套管及内套管边旋进边通过旋挖钻机取土；外套管与内套管之间具有环形间隔，内套管套接有定位结构，定位结构位于环形间隔之间，定位结构具有测定外套管与内套管之间同心同轴精度的距离传感器。通过定位结构调节实现定位精度要求，并降低套管之间摩擦力，方便起拔套管。
Full-rotation double-sleeve pile forming structure of cast-in-place pile
The invention relates to the technical field of cast-in-place pile construction in karst development areas, and discloses a cast-in-place pile full-rotation double-casing pipe pile forming structure which comprises a full-rotation drilling machine, a rotary drilling rig, an outer casing pipe and an inner casing pipe, the outer casing pipe and the inner casing pipe are driven by the full-rotation drilling machine to be screwed into a soil body, and the outer casing pipe is screwed into a first stepped hole. The inner sleeve is screwed in to form a second stepped hole connected below the first stepped hole. The lower portion of the second stepped hole is connected with a rock-socketed hole which is coaxially arranged, and the first stepped hole, the second stepped hole and the rock-socketed hole are sequentially connected from top to bottom to form a stepped rock-socketed pile hole. The casing pipe and the inner casing pipe are screwed in while soil is taken through the rotary drilling rig. An annular interval is formed between the outer sleeve and the inner sleeve, the inner sleeve is sleeved with a positioning structure, the positioning structure is located in the annular interval, and the positioning structure is provided with a distance sensor for measuring the concentric and coaxial precision between the outer sleeve and the inner sleeve. The requirement for positioning precision is met through adjustment of the positioning structure, friction force between the sleeves is reduced, and the sleeves can be conveniently pulled out.
本发明涉及岩溶发育地区灌注桩施工技术领域，公开了灌注桩全回转双套管成桩结构，包括全回旋钻机、旋挖钻机、外套管以及内套管，外套管和内套管分别由全回旋钻机带动旋进土体中，外套管旋进形成第一阶梯孔；内套管旋进形成衔接在所述第一阶梯孔下方的第二阶梯孔；第二阶梯孔的下方衔接有同轴布置的嵌岩孔，第一阶梯孔、第二阶梯孔及嵌岩孔自上而下依次衔接形成阶梯状的嵌岩桩孔；套管及内套管边旋进边通过旋挖钻机取土；外套管与内套管之间具有环形间隔，内套管套接有定位结构，定位结构位于环形间隔之间，定位结构具有测定外套管与内套管之间同心同轴精度的距离传感器。通过定位结构调节实现定位精度要求，并降低套管之间摩擦力，方便起拔套管。
Full-rotation double-sleeve pile forming structure of cast-in-place pile
灌注桩全回转双套管成桩结构
LEI BIN (Autor:in) / LIAO QIMING (Autor:in) / CHEN XIAOHUI (Autor:in) / WANG GANG (Autor:in) / TONG XIN (Autor:in) / LIU XIAOMIN (Autor:in) / YUAN WEI (Autor:in) / MO LI (Autor:in)
06.08.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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