CN112160316B - Construction method of immersed tube cast-in-place pile - Google Patents
Construction method of immersed tube cast-in-place pile Download PDFInfo
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- CN112160316B CN112160316B CN202010960897.8A CN202010960897A CN112160316B CN 112160316 B CN112160316 B CN 112160316B CN 202010960897 A CN202010960897 A CN 202010960897A CN 112160316 B CN112160316 B CN 112160316B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
- E02D5/385—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds with removal of the outer mould-pipes
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
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- General Engineering & Computer Science (AREA)
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- Civil Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a method for constructing a cast-in-place pile by sinking pipes, and aims to provide a method for constructing a cast-in-place pile by sinking pipes, which can effectively solve the problem that the pipes are deflected due to the interference of stones in the pipe sinking process. It comprises the following steps: firstly, a pile tip and a pile pipe are in place, wherein the pile pipe comprises an inner layer pile pipe, an outer layer pile pipe sleeved outside the inner layer pile pipe and an outer layer pressing pipe sleeved outside the inner layer pile pipe; secondly, a pipe sinking process, which sequentially comprises the following steps of 1) utilizing pile sinking equipment to press the pile pipe and the pile tip into the soil together until the pile tip is pressed into a soil layer with the set depth of H1 m; 2) taking down the outer pressing pipe; 3) pressing down the inner layer pile pipe and the pile tip together by pile sinking equipment; 4) sleeving an outer-layer pressing pipe on an inner-layer pile pipe, and then pressing the outer-layer pressing pipe and the outer-layer pile pipe downwards together by using pile sinking equipment; 5) and returning to the step 2), and circulating the steps until the pile pipe and the pile tip are pressed into the soil together to a set depth.
Description
Technical Field
The invention relates to the field of cast-in-place pile construction, in particular to a method for constructing a immersed tube cast-in-place pile.
Background
The pipe-sinking cast-in-place pile is one of many types of pile foundations in civil engineering and building engineering. The pile pipe is made up of pile pipe whose size is matched with the designed size of pile, pile tip is sleeved on the end of pile pipe and pressed into soil, reinforcing steel skeleton is suspended in the pile pipe and concrete is poured, then the pipe is pulled out, the pile pipe is pulled out, and the concrete is tamped by vibration during pulling out the pipe to form the pile. At present, if a pile pipe encounters a stone during pipe sinking, the pile pipe is easy to deflect due to the interference of the stone, and the normal construction of the pipe sinking cast-in-place pile is seriously influenced by the deflection of the pile pipe.
Disclosure of Invention
The invention aims to provide a method for constructing a pipe-sinking cast-in-place pile, which can effectively solve the problem that the pipe-sinking process of the pile pipe is deflected due to the interference of stones.
The technical scheme of the invention is as follows:
a construction method of a pipe-sinking cast-in-place pile sequentially comprises the following steps:
firstly, a pile tip and a pile pipe are in place, wherein the pile pipe comprises an inner layer pile pipe, an outer layer pile pipe sleeved outside the inner layer pile pipe and an outer layer pressing pipe sleeved outside the inner layer pile pipe, the lower end face of the inner layer pile pipe is supported on the pile tip, the lower end face of the outer layer pile pipe is also supported on the pile tip, the lower end face of the outer layer pressing pipe is supported on the upper end face of the outer layer pile pipe, and the upper end face of the outer layer pressing pipe and the upper end face of the inner layer pile pipe are located at the same height;
secondly, the tube sinking process comprises the following steps in sequence,
1) pressing the pile pipe and the pile tip into the soil together by using pile sinking equipment until the pile tip is pressed into a soil layer with the set depth of H1 m;
2) taking down the outer pressing pipe;
3) pressing down the inner layer pile pipe and the pile tip together by pile sinking equipment, guiding the inner layer pile pipe through the outer layer pile pipe until the upper end face of the inner layer pile pipe is positioned h1 m above the upper end face of the outer layer pile pipe; therefore, in the process of pressing the inner layer pile pipe and the pile tip together, the outer layer pile pipe is fixed in the soil layer and cannot move, the inner layer pile pipe can be guided through the outer layer pile pipe to ensure that the inner layer pile pipe moves downwards along the outer layer pile pipe, even if the pile tip meets a stone in the process, the stone can be pushed away, the inner layer pile pipe is ensured to move downwards along the outer layer pile pipe, and the problem that the inner layer pile pipe meets the stone in the pressing process and is deflected due to the interference of the stone is effectively avoided;
4) sleeving an outer pressing pipe on an inner layer pile pipe, wherein the lower end of the outer pressing pipe is supported on the upper end face of the outer layer pile pipe, then pressing the outer pressing pipe and the outer layer pile pipe downwards together by using pile sinking equipment, and guiding the outer layer pile pipe through the inner layer pile pipe until the upper end face of the outer pressing pipe and the upper end face of the inner layer pile pipe are positioned at the same height;
therefore, in the process of pressing down the outer layer pile pipe, the inner layer pile pipe is fixed in the soil layer and is immovable, the outer layer pile pipe can be guided through the inner layer pile pipe to ensure that the inner layer pile pipe moves downwards along the outer layer pile pipe, even if the outer layer pile pipe meets the stone in the process, the stone can be pushed away, the outer layer pile pipe is ensured to move downwards along the inner layer pile pipe, and the problem that the outer layer pile pipe meets the stone in the pressing down process and is deflected due to the interference of the stone is effectively avoided;
5) returning to the step 2) to continue construction, and circulating in the way until the pile pipe and the pile tip are pressed into the soil together to a set depth; therefore, the problem of deflection caused by interference of stones in the pile pipe sinking process can be effectively solved.
Thirdly, pouring concrete, or hoisting a reinforcement cage and pouring concrete;
fourthly, pile pulling, namely pulling out the inner layer pile pipe and the outer layer pile pipe of the pile pipe.
Preferably, the upper end of the pile toe is provided with a stepped shaft with an outer diameter gradually decreasing from bottom to top, the stepped shaft is provided with a lower stepped surface and an upper stepped surface, the outer layer pile pipe is coaxially sleeved on the stepped shaft, the lower end surface of the outer layer pile pipe is supported on the lower stepped surface, the inner layer pile pipe is coaxially sleeved on the stepped shaft, and the lower end surface of the inner layer pile pipe is supported on the upper stepped surface.
Preferably, the lower end of the toe is tapered.
Preferably, the inner layer pile pipe and the outer layer pile pipe are distributed coaxially.
Preferably, the outer pressure pipe has a height of 1 to 2 meters.
Preferably, the outer skin pressure tube has a height of 1.5 meters.
Preferably, the upper end face edge of the outer pile tube extends outwards to form an upper annular flange.
Preferably, the lower end face edge of the outer skin pressure pipe extends outwards to form a lower annular flange.
Preferably, the outer layer pile pipe, the outer layer pressing pipe and the inner layer pile pipe are all steel pipes.
The invention has the beneficial effects that: the problem that the pile pipe is inclined due to the interference of stones in the pipe sinking process can be effectively solved.
Drawings
Fig. 1 is a schematic view of a construction of the pile tip and pile tube of the present invention.
In the figure:
a pile tip 1, a stepped shaft 1.1, a lower step surface 1.2 and an upper step surface 1.3;
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention are clearly explained and illustrated below with reference to the accompanying drawings, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the present invention.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present scheme, and are not construed as limiting the scheme of the present invention.
These and other aspects of embodiments of the invention will be apparent with reference to the following description and attached drawings. In the description and drawings, particular embodiments of the invention have been disclosed in detail as being indicative of some of the ways in which the principles of the embodiments of the invention may be practiced, but it is understood that the scope of the embodiments of the invention is not limited thereby. On the contrary, the embodiments of the invention include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.
In the description of the present invention, it is to be understood that the terms "thickness", "upper", "lower", "horizontal", "top", "bottom", "inner", "outer", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., and "several" means one or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The first embodiment is as follows: a construction method of a pipe-sinking cast-in-place pile sequentially comprises the following steps:
firstly, positioning a pile tip and a pile pipe;
as shown in fig. 1, the pile tube 2 includes an inner layer pile tube 2.1, an outer layer pile tube 2.2 sleeved outside the inner layer pile tube, and an outer layer pressing tube 2.3 sleeved outside the inner layer pile tube. The height of outer laminated pipe is 1-2 meters, specifically, the height of outer laminated pipe is 1.5 meters.
The lower end surface of the inner layer pile pipe is supported on the pile tip 1; the lower end surface of the outer layer pile pipe is also supported on the pile tip 1; the lower end face of the outer layer pressing pipe is supported on the upper end face of the outer layer pile pipe, and the upper end face of the outer layer pressing pipe and the upper end face of the inner layer pile pipe are located at the same height; the inner layer pile pipe and the outer layer pile pipe are coaxially distributed; in the embodiment, the lower end of the pile tip is conical; the upper end of the pile tip is provided with a stepped shaft 1.1 of which the outer diameter is gradually reduced from bottom to top, and the stepped shaft is provided with a lower step surface 1.2 and an upper step surface 1.3; the outer layer pile pipe 2.2 is coaxially sleeved on the stepped shaft, and the lower end face of the outer layer pile pipe is supported on the lower step face; the inner layer pile pipe 2.1 is coaxially sleeved on the stepped shaft, and the lower end face of the inner layer pile pipe is supported on the upper stepped face.
The edge of the upper end surface of the outer layer pile pipe extends outwards to form an upper annular flange; the lower end face edge of the outer pressing pipe extends outwards to form a lower annular flange. The outer layer pile pipe, the outer layer pressing pipe and the inner layer pile pipe are all steel pipes.
Specifically, the pile tip and the pile pipe are in place, which comprises the steps of pile tip in place and pile pipe in place, wherein before the pile tip is in place, the position embedded by the pile tip is subjected to drill detection, the detection depth is 2-4m, and obstacles (such as old foundations, stones, waste iron and the like) at the pile tip are detected and removed; then, embedding the pile tip at a specified position to position the pile tip; after the pile tip is in place, hoisting the pile pipe to support the lower end surface of the inner layer pile pipe on the pile tip, supporting the lower end surface of the outer layer pressure pipe on the upper end surface of the outer layer pile pipe, and enabling the upper end surface of the outer layer pressure pipe and the upper end surface of the inner layer pile pipe to be located at the same height so as to enable the pile pipe to be in place;
secondly, the tube sinking process comprises the following steps in sequence,
1) the pile pipe and the pile tip are pressed into the soil together by pile sinking equipment until the pile tip is pressed into a soil layer with a set depth of H1 m, wherein the value of H1 m is 2 m, 3 m or 4m, in the embodiment, the value of H1 and the detection depth of drill rod detection are consistent, so that the problem that the pile pipe and the pile tip are pressed into the soil together when encountering stones in the process of the step and are deflected is avoided, and the pile pipe is guaranteed to be pressed into the soil in a vertical state;
2) taking down the outer pressing pipe;
3) the inner layer pile pipe and the pile tip are pressed downwards together by pile sinking equipment, the inner layer pile pipe is guided by the outer layer pile pipe until the upper end face of the inner layer pile pipe is positioned h1 meters above the upper end face of the outer layer pile pipe, and in the embodiment, the value of h1 meters is 0.5 meter, 0.4 meter or 0.3 meter; therefore, in the process of pressing the inner layer pile pipe and the pile tip together, the outer layer pile pipe is fixed in the soil layer and cannot move, the inner layer pile pipe can be guided through the outer layer pile pipe to ensure that the inner layer pile pipe moves downwards along the outer layer pile pipe, even if the pile tip meets a stone in the process, the stone can be pushed away, the inner layer pile pipe is ensured to move downwards along the outer layer pile pipe, and the problem that the inner layer pile pipe meets the stone in the pressing process and is deflected due to the interference of the stone is effectively avoided;
4) sleeving an outer pressing pipe on an inner layer pile pipe, wherein the lower end of the outer pressing pipe is supported on the upper end face of the outer layer pile pipe, then pressing the outer pressing pipe and the outer layer pile pipe downwards together by using pile sinking equipment, and guiding the outer layer pile pipe through the inner layer pile pipe until the upper end face of the outer pressing pipe and the upper end face of the inner layer pile pipe are positioned at the same height;
therefore, in the process of pressing down the outer layer pile pipe, the inner layer pile pipe is fixed in the soil layer and is immovable, the outer layer pile pipe can be guided through the inner layer pile pipe to ensure that the inner layer pile pipe moves downwards along the outer layer pile pipe, even if the outer layer pile pipe meets the stone in the process, the stone can be pushed away, the outer layer pile pipe is ensured to move downwards along the inner layer pile pipe, and the problem that the outer layer pile pipe meets the stone in the pressing down process and is deflected due to the interference of the stone is effectively avoided;
5) returning to the step 2) to continue construction, and circulating in the way until the pile pipe and the pile tip are pressed into the soil together to a set depth; therefore, the problem of deflection caused by interference of stones in the pile pipe sinking process can be effectively solved.
Thirdly, pouring concrete, or hoisting a reinforcement cage and pouring concrete;
fourthly, pile pulling, namely pulling out the inner layer pile pipe and the outer layer pile pipe of the pile pipe.
The pile sinking equipment in the embodiment is hammering pile sinking equipment or vibrator vibration pile sinking equipment.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, alterations and equivalents of the above embodiments according to the technical spirit of the present invention are still within the protection scope of the technical solution of the present invention.
Claims (10)
1. A construction method of a pipe-sinking cast-in-place pile is characterized by sequentially comprising the following steps:
firstly, a pile tip and a pile pipe are in place, wherein the pile pipe comprises an inner layer pile pipe, an outer layer pile pipe sleeved outside the inner layer pile pipe and an outer layer pressing pipe sleeved outside the inner layer pile pipe, the lower end face of the inner layer pile pipe is supported on the pile tip, the lower end face of the outer layer pile pipe is also supported on the pile tip, the lower end face of the outer layer pressing pipe is supported on the upper end face of the outer layer pile pipe, and the upper end face of the outer layer pressing pipe and the upper end face of the inner layer pile pipe are located at the same height;
secondly, the tube sinking process comprises the following steps in sequence,
1) pressing the pile pipe and the pile tip into the soil together by using pile sinking equipment until the pile tip is pressed into a soil layer with the set depth of H1 m;
2) taking down the outer pressing pipe;
3) pressing down the inner layer pile pipe and the pile tip together by using pile sinking equipment so as to guide the inner layer pile pipe through the outer layer pile pipe until the upper end face of the inner layer pile pipe is positioned h1 meters above the upper end face of the outer layer pile pipe;
4) sleeving an outer pressing pipe on an inner layer pile pipe, wherein the lower end of the outer pressing pipe is supported on the upper end face of the outer layer pile pipe, and then pressing down the outer pressing pipe and the outer layer pile pipe together by using pile sinking equipment so as to guide the outer layer pile pipe through the inner layer pile pipe until the upper end face of the outer pressing pipe and the upper end face of the inner layer pile pipe are positioned at the same height;
5) returning to the step 2) to continue construction, and circulating in the way until the pile pipe and the pile tip are pressed into the soil together to a set depth;
thirdly, pouring concrete;
fourthly, pile pulling, namely pulling out the inner layer pile pipe and the outer layer pile pipe of the pile pipe.
2. The method as claimed in claim 1, wherein the third step further comprises hoisting a reinforcement cage and pouring concrete.
3. The method as claimed in claim 1, wherein the upper end of the pile toe is provided with a stepped shaft having a lower step surface and an upper step surface, the outer layer pile pipe is coaxially fitted over the stepped shaft, the lower end surface of the outer layer pile pipe is supported on the lower step surface, the inner layer pile pipe is coaxially fitted over the stepped shaft, and the lower end surface of the inner layer pile pipe is supported on the upper step surface.
4. The method as claimed in claim 1, wherein the lower end of the pile tip is tapered.
5. The method as claimed in claim 1, wherein the inner pile tube and the outer pile tube are coaxially arranged.
6. A method as claimed in claim 1, 2 or 3, wherein the outer pipe has a height of 1-2 m.
7. The method as claimed in claim 6, wherein the outer pressure pipe has a height of 1.5 m.
8. A method as claimed in claim 1, 2 or 3, wherein the upper end face of the outer pile tube is formed with an annular flange extending outwardly.
9. The method as claimed in claim 8, wherein the lower end face of the outer pipe is formed with a lower annular flange extending outwardly.
10. The method as claimed in claim 1, 2 or 3, wherein the outer pile tube, the outer pressing tube and the inner pile tube are all steel tubes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010960897.8A CN112160316B (en) | 2020-09-14 | 2020-09-14 | Construction method of immersed tube cast-in-place pile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010960897.8A CN112160316B (en) | 2020-09-14 | 2020-09-14 | Construction method of immersed tube cast-in-place pile |
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| Publication Number | Publication Date |
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| CN112160316A CN112160316A (en) | 2021-01-01 |
| CN112160316B true CN112160316B (en) | 2022-01-04 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4010905B2 (en) * | 2001-08-10 | 2007-11-21 | ジャパンパイル株式会社 | Pile embedding method and equipment used therefor |
| CN100434597C (en) * | 2006-08-25 | 2008-11-19 | 中机工程勘察设计研究院 | Construction method of immersed tube club-footed bored concrete pile |
| CN104563098B (en) * | 2015-01-21 | 2016-01-20 | 成都市第四建筑工程公司 | A kind of super-large diameter all steel casing does operation pore-creating filling pile construction method |
| CN109208594B (en) * | 2018-08-29 | 2020-11-17 | 中铁大桥局集团有限公司 | Treatment method for steel casing sinking meeting boulder, steel casing structure and drilled pile |
| CN109440762B (en) * | 2018-11-14 | 2020-10-16 | 浙江景昌建设有限公司 | Construction method of filling pile for drainage pump station |
| CN110130347B (en) * | 2019-04-30 | 2024-05-24 | 福建路港（集团）有限公司 | Intelligent positioning guide device and method for pile foundation construction and engineering management method |
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