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Underflow special geology super-deep pile artificial hole-digging and pouring construction method

A special geological and artificial hole digging technology, applied in construction, sheet pile wall, infrastructure engineering and other directions, can solve the problems of waste of manpower and material resources, difficult construction, unqualified pile integrity testing, etc., to ensure the quality of pouring and forming , Complete slag removal effect

Pending Publication Date: 2019-09-17
青岛亿联建设集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the construction of high-rise buildings, some areas are restricted by geological conditions, and some building foundations adopt artificial excavated pile foundations. During the construction process, due to the typical karst landform in some areas, the geological conditions are very special, underground caves, trenches, Under the underground river environment, due to the large rock fissures and rich groundwater, the construction is difficult, resulting in the occurrence of Class III piles and waste piles after the pile foundation is poured in the conduit method, and the pile body integrity test fails.
Then waste manpower and material resources and delay the normal progress of construction

Method used

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  • Underflow special geology super-deep pile artificial hole-digging and pouring construction method
  • Underflow special geology super-deep pile artificial hole-digging and pouring construction method
  • Underflow special geology super-deep pile artificial hole-digging and pouring construction method

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Experimental program
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Effect test

Embodiment 1

[0050] The present invention is a construction method of manual excavation and pouring of ultra-deep piles with undercurrent special geology, comprising the following steps:

[0051] 1) Determining the excavation position of the pile hole (1), clearing the surface soil at the excavation position of the pile hole (1), leveling, compacting and testing the excavation work surface at the excavation position of the pile hole (1); An annular retainer (3) higher than the construction ground is built on the periphery of the excavation position of the pile hole (1), and the excavation position of the pile hole (1) is located in the ring of the annular retainer (3);

[0052] 2) After step 1) is completed, start excavating the pile hole at the excavation position of the pile hole (1) in the annular retaining ring (3) of step 1), and excavate the pile hole (1) by manual excavation. Digging downwards, when encountering hard soil layers and sandstones, use pneumatic picks and water drills t...

Embodiment 2

[0086] The difference between this embodiment and embodiment 1 is: the cross-section of pile hole (1) is oval, in step 4), after the shaped steel formwork (6) is fixed and casts reinforced concrete well ring (4), after shaped steel Three horizontal support steel pipes are added in the formwork (6), the two ends of the horizontal support steel pipes are fixed to the inner wall support of the shaped steel formwork (6), and the horizontal support steel pipes are perpendicular to the axis of the pile hole (1); the reinforced concrete well circle (4) After reaching the strength, remove the horizontal support steel pipe.

[0087] If the pile hole (1) is an ellipse hole, the extrusion force intensity of the pile hole (1) inner wall received on each point of the reinforced concrete well circle (4) and the shaped steel formwork (6) is different. In the present application, if the pile hole (1) is an elliptical hole, three horizontal support steel pipes are set in the shaped steel form ...

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Abstract

The invention discloses an underflow special geology super-deep pile artificial hole-digging and pouring construction method. The underflow special geology super-deep pile artificial hole-digging and pouring construction method is characterized by comprising the following steps: (1) the digging position of a pile hole (1) is determined, surface soil at the digging position of the pile hole (1) is cleared, a digging work face of the digging position of the pile hole (1) is leveled, compacted and detected, an annular protective ring (3) higher than the construction ground is built at the periphery of the digging position of the pile hole (1) , and the digging position of the pile hole (1) is located in the annular shape of the annular protective ring (3); and (2) after the step (1) is completed, the pile hole starts to be dug in the digging position of the pile hole (1) in the annular protective ring (3) in the step (1), and downward digging is conducted from the digging position of the pile hole (1) in an artificial digging mode. The underflow special geology super-deep pile artificial hole-digging and pouring construction method has the advantages that the disadvantages of the prior art can be overcome, and the structure design is reasonable and novel.

Description

technical field [0001] The invention relates to a construction method for manual digging and pouring of ultra-deep piles with undercurrent special geological conditions, which belongs to the field of construction. Background technique [0002] Manual digging piles are easy to construct, fast, and do not require large-scale mechanical equipment. Digging piles are stronger in earthquake resistance than wooden piles and concrete driven piles. Rotary drilling rig drilling, caisson foundation saving. During the construction of high-rise buildings, some areas are restricted by geological conditions, and some building foundations adopt artificial excavated pile foundations. During the construction process, due to the typical karst landform in some areas, the geological conditions are very special, underground caves, trenches, Under the underground river environment, due to the large rock fissures and abundant groundwater, the construction is difficult, which leads to the phenomeno...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/44E02D15/04E02D33/00
CPCE02D5/44E02D15/04E02D33/00
Inventor 吴昆
Owner 青岛亿联建设集团股份有限公司