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Grouting squeezing and expanding steel pipe concrete stand column pile and construction method thereof

A technology for concrete-filled steel tube piles and concrete-filled steel tubes, which is applied in excavation, sheet pile wall, infrastructure engineering, etc., can solve the problems of high engineering cost, large material consumption, and complicated construction procedures.

Pending Publication Date: 2022-07-29
上海同人里岩土工程技术有限公司
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  • Description
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Problems solved by technology

[0003] The purpose of the present invention is to provide a grouting squeezed steel pipe concrete column pile and its construction method to solve the problems of complex construction procedures, large material consumption and high engineering cost of the existing foundation pit engineering column piles

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  • Grouting squeezing and expanding steel pipe concrete stand column pile and construction method thereof
  • Grouting squeezing and expanding steel pipe concrete stand column pile and construction method thereof
  • Grouting squeezing and expanding steel pipe concrete stand column pile and construction method thereof

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Embodiment Construction

[0037] In order to make the objects, advantages and features of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the accompanying drawings are all in a very simplified form and are not drawn to scale, and are only used to facilitate and clearly assist the purpose of explaining the embodiments of the present invention. Furthermore, the structures shown in the drawings are often part of the actual structure. In particular, each drawing needs to show different emphases, and sometimes different scales are used.

[0038] As used in this specification, the singular forms "a," "an," and "the" include plural referents, the term "or" is generally employed in its sense including "and / or", and the term "a number" It is usually used in the sense including "at least one", the term "at least two" is usually used in the sense including "two or more", in...

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Abstract

The invention provides a grouting squeezing and expanding steel pipe concrete stand column pile and a construction method thereof. The grouting squeezing and expanding steel pipe concrete stand column pile comprises a steel pipe concrete pile section and a steel pipe concrete stand column section. The steel pipe concrete pile section is constructed by adopting drilling implantation and grouting squeezing and expanding processes, and a pile side area is formed outside the peripheral wall of the steel pipe concrete pile section; when the steel pipe is implanted into the drill hole, slurry is attached to the outside to replace the grouting pipe and used for grouting the pile side area. The steel pipe concrete pile section comprises a grouting squeezing and expanding device, and the grouting squeezing and expanding device is located at the bottom of the steel pipe concrete pile section. According to the configuration, the side resistance of the concrete-filled steel tube pile section is improved by replacing pile side slurry with cement slurry and performing grouting extrusion and expansion; meanwhile, a steel reinforcement cage is replaced by the steel pipes, so that construction procedures are reduced, materials are saved, and the construction cost is reduced; in addition, concrete pouring and pile side grouting can be conducted at the same time, and the construction efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of civil engineering construction, in particular to a grouting squeeze-expanded concrete-filled steel tubular column pile and a construction method thereof. Background technique [0002] At present, there are two main types of column piles in foundation pit engineering: bored cast-in-place piles + lattice columns, bored cast-in-place piles + steel pipe piles. These two types of column piles use bored piles below the pit bottom, and lattice columns or steel pipe piles above the pit bottom. Lattice columns or steel pipe piles are implanted in bored piles, so the diameter of bored piles is relatively large, generally not less than 800mm. In order to save the cost of the pile foundation, the diameter expansion technology is often used to expand the diameter of the pile within 5m below the pit bottom to 800mm. The construction process is complicated, the material consumption is large, and the project cost is hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/38E02D5/44E02D15/04E02D17/02
CPCE02D5/38E02D5/44E02D15/04E02D17/02
Inventor 胡玉银
Owner 上海同人里岩土工程技术有限公司
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