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A platform for research: civil engineering, architecture and urbanism
Dry-method rotary extruding and expanding pile forming device and construction method
The invention discloses a dry-method rotary extruding and expanding pile forming device and a construction method thereof. The dry-method rotary extruding and expanding pile forming device comprises a walking type and crawler type main machine, a winch, a cab computer, a guide rod, a steel wire rope, a drilling speed controller, a feeding port, a rotary extruding and expanding drill rod, a rotary extruding and expanding drill bit, a discharging port, a concrete sensing device, a self-soil-taking device, a pump truck guide pipe and a concrete pump truck; the construction method is characterized in that a dry-method rotary extruding and expanding pile is built through the rotary compaction expanding pile forming device to form intermittent expanding of a pile bottom and a pile body, and the specific construction comprises the steps of drilling for hole forming, expanding of the pile bottom, concrete pouring, expanding of the pile body and the like. Compared with the prior art, in a soft soil area drilling process, an original pile body soil body is completely compacted into a pile hole peripheral soil body through the drill bit and the drill rod, hole forming unearthing is reduced, the stability of a pile hole peripheral hole wall is enhanced, the bearing capacity of the pile body is increased, the concrete filling coefficient is reduced, the construction cost is reduced, the construction efficiency of the cast-in-place pile in a soft soil area is improved, and investment and coordination of machinery, personnel and materials are reduced.
本发明公开了一种干法旋挤扩成桩装置及其施工方法，该装置包括步履式和履带式主机、卷扬机、驾驶室计算机、导杆、钢丝绳、钻速控制器、进料口、旋挤扩钻杆、旋挤扩钻头、出料口、砼感知装置、自取土装置、泵车导管、混凝土泵车。其特点是通过旋转挤密扩径成桩装置形成桩底、桩身间断式扩径的一种干法旋挤扩桩，具体施工包括：钻进成孔、桩底扩径、砼灌注、桩身扩径等步骤。本发明与现有技术相比，在软土地区钻进过程中通过钻头、钻杆将原桩身土体全部挤密到桩孔周边土体中，减少成孔出土，加强了桩孔周边孔壁的稳定性，增加了桩身的承载力，降低混凝土充盈系数，降低了施工成本，提升了软土地区的灌注桩施工效率，减少了机械、人员、材料的投入和协调。
Dry-method rotary extruding and expanding pile forming device and construction method
The invention discloses a dry-method rotary extruding and expanding pile forming device and a construction method thereof. The dry-method rotary extruding and expanding pile forming device comprises a walking type and crawler type main machine, a winch, a cab computer, a guide rod, a steel wire rope, a drilling speed controller, a feeding port, a rotary extruding and expanding drill rod, a rotary extruding and expanding drill bit, a discharging port, a concrete sensing device, a self-soil-taking device, a pump truck guide pipe and a concrete pump truck; the construction method is characterized in that a dry-method rotary extruding and expanding pile is built through the rotary compaction expanding pile forming device to form intermittent expanding of a pile bottom and a pile body, and the specific construction comprises the steps of drilling for hole forming, expanding of the pile bottom, concrete pouring, expanding of the pile body and the like. Compared with the prior art, in a soft soil area drilling process, an original pile body soil body is completely compacted into a pile hole peripheral soil body through the drill bit and the drill rod, hole forming unearthing is reduced, the stability of a pile hole peripheral hole wall is enhanced, the bearing capacity of the pile body is increased, the concrete filling coefficient is reduced, the construction cost is reduced, the construction efficiency of the cast-in-place pile in a soft soil area is improved, and investment and coordination of machinery, personnel and materials are reduced.
本发明公开了一种干法旋挤扩成桩装置及其施工方法，该装置包括步履式和履带式主机、卷扬机、驾驶室计算机、导杆、钢丝绳、钻速控制器、进料口、旋挤扩钻杆、旋挤扩钻头、出料口、砼感知装置、自取土装置、泵车导管、混凝土泵车。其特点是通过旋转挤密扩径成桩装置形成桩底、桩身间断式扩径的一种干法旋挤扩桩，具体施工包括：钻进成孔、桩底扩径、砼灌注、桩身扩径等步骤。本发明与现有技术相比，在软土地区钻进过程中通过钻头、钻杆将原桩身土体全部挤密到桩孔周边土体中，减少成孔出土，加强了桩孔周边孔壁的稳定性，增加了桩身的承载力，降低混凝土充盈系数，降低了施工成本，提升了软土地区的灌注桩施工效率，减少了机械、人员、材料的投入和协调。
Dry-method rotary extruding and expanding pile forming device and construction method
一种干法旋挤扩成桩装置及施工方法
ZHOU LEI (author) / GENG LIANGCAI (author) / ZHANG QUN (author) / ZHOU YUSHI (author) / XIE XIAODONG (author) / XIE YIFEI (author) / XIE SHUDONG (author)
2021-07-27
Patent
Electronic Resource
Chinese
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