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Construction method of rotating drilling dry-drilled piles of sand soil interlayer foundation

A construction method and technology of rotary drilling, which are applied in basic structure engineering, sheet pile walls, buildings, etc., can solve problems such as inappropriate construction, and achieve the effects of improving construction efficiency, fast hole forming speed, and convenient construction.

Active Publication Date: 2013-08-28
HUITONG ROAD & BRIDGE CONSTR GROUP
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Problems solved by technology

However, this patent application is not applicable to the construction of piles formed by rotary drilling and dry digging on soil-sand interlayer foundations.

Method used

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  • Construction method of rotating drilling dry-drilled piles of sand soil interlayer foundation
  • Construction method of rotating drilling dry-drilled piles of sand soil interlayer foundation
  • Construction method of rotating drilling dry-drilled piles of sand soil interlayer foundation

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Embodiment Construction

[0040] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0041] The construction process of the present invention's soil-sand interlayer foundation rotary-drilling drill and dry-dug hole-forming pile is as follows: figure 1 As shown, the steps are as follows:

[0042] (1) Select the drilling rig type and drill bit according to the geological conditions, and the diameter of the drill bit should be consistent with the diameter of the hole-forming pile;

[0043] (2) Leveling the construction site, clearing debris, leveling and rolling, and rationally arranging the location of the drilling rig, the location of slag discharge and loading and transportation routes of dump trucks;

[0044] ⑶ Carry out pile position measurement and stakeout, check and retest the wire points and benchmark points before measurement stakeout, and properly protect the center point of the stakeout pile foundation. Such as figure 2 As shown, there i...

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Abstract

The invention relates to a construction method of rotating drilling dry-drilled piles of a sand soil interlayer foundation. The construction method comprises the steps of (1) selecting a drilling machine model and a drill bit according to the geological conditions; (2) leveling a construction site, clearing debris and performing leveling and rolling compaction; (3) performing measurement and setting out on pile locations and checking and retesting traverse points and leveling points before the measurement and setting out; (4) embedding pile casings; (5) targeting the well embedded casings and staring a motor to perform clockwise rotating drilling; (6) inspecting the diameter, depth and perpendicularity of holes through a rib hole opener; (7) hoisting rib to place the rib into the holes; and (8) utilizing retarded concrete to perform perfusion. The construction method of the rotating drilling dry-drilled piles of the sand soil interlayer foundation has the advantages of enabling the complicated processes to be reduced, improving the construction efficiency and quality of hole piles and being beneficial to the standardization of the rotating drilling construction process.

Description

technical field [0001] The invention belongs to the technical field of civil engineering, and relates to a construction method for piles formed by rotary drilling and dry digging of soil-sand interlayer foundations. Background technique [0002] With the continuous development of my country's engineering construction, especially the increasing number of road bridges, railways, water conservancy, and urban construction projects, the rotary drilling rig is a new type of pile foundation hole-forming equipment. The self-propelled landing gear has the characteristics of low noise, small vibration, large torque, multi-function, fast hole forming speed, flexible maneuvering, multiple speed adjustment, electronic automatic monitoring, etc. It overcomes the shortcomings of the previous electric drilling machine and is mainly suitable for The construction of sandy soil, cohesive soil, silty soil and other soil layers has won the favor of more and more construction units. Reasonable use...

Claims

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Application Information

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IPC IPC(8): E02D5/38
Inventor 蔡献东周万生肖淑青岳静芳李宗正赵洪宇夏春霆葛守扬
Owner HUITONG ROAD & BRIDGE CONSTR GROUP
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