Large pile foundation construction method
A construction method and pile foundation technology, which is applied in the direction of foundation structure engineering, excavation, sheet pile wall, etc., can solve the problems of unfavorable construction and production, occupying the effective space of transport vehicles, and high transportation cost of casing, and achieves convenient disassembly and transportation, The effect of convenient pile foundation construction
Active Publication Date: 2017-01-25
CHINA ROAD & BRIDGE
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Problems solved by technology
It occupies the effective space of the transport vehicle during transportation and is easily deformed during transportation and loading and unloading. Especially during long-distance transportation, the transportation cost of the casing is relatively high, which is not conducive to construction and production
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Embodiment Construction
[0026] The present invention will be described in detail below so that those skilled in the art can implement it after referring to this specification.
[0027] A kind of large-scale pile foundation construction method, comprises the following steps:
[0028] Step 1. Preparation before drilling: Level the site, measure the position of the pile holes, set up mud pools and mud circulation grooves, and lay a drilling platform for supporting the drilling rig on the construction site according to the plane position of the building pile foundation and the drilling sequence shelf;
[0029] Step 2. Embedding the casing: After drilling to the buried depth with the rotary drilling rig, install the casing driver on the rotary drilling rig, lift the casing, align the hole position, and lower the rotating arm to install the casing; among them, as figure 1 As shown, the casing is composed of a plurality of first casing walls 1 and a plurality of second casing walls 2 which can be intersect...
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The invention discloses a large pile foundation construction method. The large pile foundation construction method comprises the following steps that preparation is carried out before drilling; a pile casing is buried and formed by combining multiple first pile casing walls and multiple second pile casing walls alternately in a mutual crossed and overlapped mode so that the inner diameter of the pile casing can be adjusted, the first pile casing walls are of a double-layer structure with an interlayer and are arc, the second pile casing walls are elastic arc boards, the thickness of the second pile casing walls corresponds to the thickness of the interlayers of the first pile casing walls, and the radian of the second pile casing walls is consistent with the radian of the first pile casing walls so that the second pile casing walls can be inserted into the interlayers of the first pile casing walls and the inner diameter of the pile casing can be adjusted; grouting is conducted, i.e., wall protecting slurry is poured into the pile casing; drilling is conducted, i.e., combined drilling is conducted through a percussion drill and a rotary drilling rig; hole cleaning is conducted; and a pile is formed.
Description
technical field [0001] The invention relates to the field of construction methods, in particular to a large-scale pile foundation construction method. Background technique [0002] With the development of civil engineering technology, more and more pile foundation construction is adopted, and the development trend is to develop super-long and large-diameter pile foundations; at present, pile foundation construction methods include: impact drilling rig drilling, rotary drilling rig drilling hole etc. Casing is commonly used in pile foundation construction. Casing is a kind of machine tool for building pile foundation construction. It is usually buried in the hole of pile foundation to prevent the collapse of the surface soil at the hole and play a guiding role for the pile forming machine. [0003] Each pile foundation project usually has pile types with various diameters. According to different pile diameters, it is often necessary to configure a variety of casings with dif...
Claims
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IPC IPC(8): E02D5/38E02D5/66E02D17/08E21B15/00
Inventor 陈凯程昊吕岩赵晨张波王登炳
Owner CHINA ROAD & BRIDGE