Method for drilling and filling concrete hollow pile

A technology of bored grouting and hollow piles, which is applied to sheet pile walls, buildings, and foundation structure engineering, etc. It can solve the problems of small pile bearing capacity and loose contact, and achieve the effect of improving pile bearing capacity

CN104499480AInactive Publication Date: 2015-04-08董相东 +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2015-04-08
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a method for drilling and filling a concrete hollow pile. The method comprises the following steps: drilling by using a long spiral drilling machine; arranging a steel bar cage in a drilled hole; keeping a protection layer between the steel bar cage and a hole wall; filling concrete into the drilled hole; sinking an inner core pipe into the drilled hole and keeping for the first pre-set time; and pulling out the hollow core pipe after second pre-set time to form the concrete hollow pile. The method provided by the invention has the beneficial effects that the inner core pipe is sunk into a concrete pile so that a pile body of the concrete pile and a soil body beside the pile are compacted; meanwhile, the pile diameter of the concrete pile is increased so that the aim of improving the pile bearing force is achieved.
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Description

technical field

[0001] The invention relates to the field of construction, in particular to a method for drilling and injecting concrete hollow piles. Background technique

[0002] The cast-in-situ pile system refers to the pile holes formed in the foundation soil by means of mechanical drilling, steel pipe extrusion or manual excavation on the project site, and piles made by placing steel cages and pouring concrete in them, depending on the method of hole formation. , Cast-in-situ piles can be divided into several categories such as immersed tube piles, bored piles and hole-dug piles. Bored pile is a pile type defined according to the classification of pile forming methods.

[0003] The contact between the pile body and the pile side soil of the existing bored pile is relatively loose, and the bearing capacity of the pile is relatively small. Contents of the invention

[0004] The invention provides a method for drilling concrete hollow piles, comprising: using a long a...

Examples

Embodiment Construction

[0017] Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the technical features or combinations of technical features described in the following embodiments should not be regarded as isolated, and they can be combined with each other to achieve better technical effects. In the drawings of the following embodiments, the same reference numerals appearing in each drawing represent the same features or components, which can be applied in different embodiments.

[0018] figure 1 It is a schematic diagram of the first embodiment of the method for drilling concrete hollow piles according to the present invention.

[0019] The method for drilling concrete hollow piles of the present invention comprises the following steps:

[0020] Drilling holes, that is, using long auger drills to drill holes;

[0021] Place a reinforcement cage, that is, place a reinforcement cage in the borehole, and leave...