CN108755668B - Pile construction method - Google Patents
Pile construction method Download PDFInfo
- Publication number
- CN108755668B CN108755668B CN201810650073.3A CN201810650073A CN108755668B CN 108755668 B CN108755668 B CN 108755668B CN 201810650073 A CN201810650073 A CN 201810650073A CN 108755668 B CN108755668 B CN 108755668B
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- CN
- China
- Prior art keywords
- pile
- grouting
- tubular
- end plate
- pipe
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Classifications
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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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/003—Injection of material
Abstract
The invention discloses a construction method of a grouting pipe pile in a wall, when a concrete pipe pile is prefabricated, grouting steel pipes are buried in the wall of the concrete pipe pile and serve as grouting pipes and reinforcing bars of the concrete pipe pile, the diameter of each grouting steel pipe is 1-5cm, the number of the grouting steel pipes is 2-8, and the grouting steel pipes are distributed in a circular shape at equal intervals; the grouting steel pipe is provided with threaded grouting holes at the pile side and the pile end of the concrete pipe, and the distance between the grouting holes at the pile side is 50-500 cm; arranging an enlarged end plate with the diameter 1-30cm larger than the outer diameter of the tubular pile at the bottom of the tubular pile, reserving a hole at the position of the threaded grouting hole on the end plate, welding the end plate with the pile body or flexibly connecting the end plate with a steel strand embedded in the pile body, wherein the length of the steel strand is 5-30 cm; a wireless pressure sensor is arranged in the end plate. The invention has convenient construction and excellent construction effect.
Description
Technical Field
The invention relates to a construction method of a pile.
Background
When the existing pile is constructed, the grouting pipe is arranged in the inner cavity or outside the tubular pile, so that the function is single, and the performance is not ideal; and the construction methods of the common static pressure pile and the like are complex in construction and poor in construction effect, and further improvement is needed.
Disclosure of Invention
The invention aims to provide a construction method of a pile, which is convenient to construct and has a good effect.
The technical solution of the invention is as follows:
a construction method of an in-wall grouting pipe pile is characterized by comprising the following steps:
(1) when the concrete pipe pile is prefabricated, grouting steel pipes are buried in the wall of the concrete pipe pile and serve as grouting pipes and reinforcing bars of the concrete pipe pile, the diameter of each grouting steel pipe is 1-5cm, the number of the grouting steel pipes is 2-8, and the grouting steel pipes are distributed in a circular shape at equal intervals; the grouting steel pipe is provided with threaded grouting holes at the pile side and the pile end of the concrete pipe, and the distance between the grouting holes at the pile side is 50-500 cm; arranging an enlarged end plate with the diameter 1-30cm larger than the outer diameter of the tubular pile at the bottom of the tubular pile, reserving a hole at the position of the threaded grouting hole on the end plate, welding the end plate with the pile body or flexibly connecting the end plate with a steel strand embedded in the pile body, wherein the length of the steel strand is 5-30 cm; a wireless pressure sensor is arranged in the end plate;
(2) when the length of a single pile needs to be connected by a plurality of sections of tubular piles, the grouting steel pipes are connected between two adjacent sections of tubular piles by arranging the fusiform hollow steel pipes, small ends at the upper end and the lower end of each connecting pipe are respectively embedded into the grouting steel pipes of the two adjacent sections of tubular piles and sealed by rubber pads, the embedding length is 3-10cm, the middle expansion part is positioned between the two adjacent sections of tubular piles, and the length is the same as the connecting length of the tubular piles.
The construction of the tubular pile can adopt a static pressure method or a hammering method: when a static pressure method is adopted, the pile top thread grouting hole is in threaded connection with an external grouting hose; when the hammering method is adopted, the threaded grouting hole on the side of the uppermost pile is in threaded connection with an external grouting hose; the pile is sunk, and simultaneously concrete and/or cement soil are injected into the pile under high pressure by external grouting equipment, because the diameter of the expanded end plate is 1-30cm larger than the outer diameter of the pipe pile, a gap is generated between the outer wall of the pipe pile and a soil body, when slurry is injected into the gap under high pressure through a pile side grouting hole, the gap can be increased by cutting the soil body, the friction force in construction can be reduced, and pile sinking is facilitated; meanwhile, the strength of the concrete and/or cement soil in the gap is higher after solidification, so that the concrete and/or cement soil and tubular pile composite pile is formed, and the bearing capacity and stability of the pile are improved.
When the static pressure method is adopted for construction and a single pile is a single-section tubular pile, an enlarged end plate arranged at the bottom of the pile is flexibly connected with a steel strand embedded in a pile body, a static pressure pile machine can easily clamp and pull out the tubular pile after pile sinking is completed due to the existence of pile side gaps, the end plate and the pile body are separated due to tension when the tubular pile is pulled out, the tubular pile is only connected through the steel strand, concrete and/or cement soil can be injected into a gap formed by pulling out the tubular pile upwards through a central cavity of the tubular pile, the cavity at the top of the tubular pile is sealed by a steel plate after the tubular pile is partially or completely pulled out, pile sinking operation is carried out again to compact the concrete and/or the cement soil, a squeezed and expanded concrete and/or cement soil and tubular pile composite pile is formed, and the bearing capacity.
The invention has convenient construction and excellent construction effect.
The present invention will be further described with reference to the following examples.
Detailed Description
A construction method of a grouting pipe pile in a wall,
(1) when the concrete pipe pile is prefabricated, the grouting steel pipes are embedded in the wall of the concrete pipe pile and serve as the grouting pipes and the reinforcing bars of the concrete pipe pile (the grouting pipe has the grouting function, ensures the strength of the pipe pile and plays roles of bending resistance, bending resistance and compression resistance), the diameter of each grouting steel pipe is 1-5cm, the number of the grouting steel pipes is 2-8, and the grouting steel pipes are distributed in a circular shape at equal intervals; the grouting steel pipe is provided with threaded grouting holes (capable of punching downwards and punching the side face to reduce friction) at the pile side and the pile end of the concrete pipe; the distance between pile side grouting holes is 50-500 cm; arranging an enlarged end plate (which can be in a cross shape, an X shape, a Y shape and other special shapes) with the diameter of 1-30cm larger than the outer diameter of the tubular pile at the bottom of the tubular pile, reserving a hole at the position of the threaded grouting hole on the end plate, welding the end plate with the pile body or flexibly connecting the end plate with a steel strand embedded in the pile body, wherein the length of the steel strand is 5-30 cm; a wireless pressure sensor is arranged in the end plate;
(2) when the length of a single pile needs to be connected by a plurality of sections of tubular piles, the grouting steel pipes are connected between two adjacent sections of tubular piles by arranging the fusiform hollow steel pipes, small ends at the upper end and the lower end of each connecting pipe are respectively embedded into the grouting steel pipes of the two adjacent sections of tubular piles and sealed by rubber pads, the embedding length is 3-10cm, the middle expansion part is positioned between the two adjacent sections of tubular piles, and the length is the same as the connecting length of the tubular piles.
The construction of the tubular pile can adopt a static pressure method or a hammering method: when a static pressure method is adopted, the pile top thread grouting hole is in threaded connection with an external grouting hose; when the hammering method is adopted, the threaded grouting hole on the side of the uppermost pile is in threaded connection with an external grouting hose; the pile is sunk, and simultaneously concrete and/or cement soil are injected into the pile under high pressure by external grouting equipment, because the diameter of the expanded end plate is 1-30cm larger than the outer diameter of the pipe pile, a gap is generated between the outer wall of the pipe pile and a soil body, when slurry is injected into the gap under high pressure through a pile side grouting hole, the gap can be increased by cutting the soil body, the friction force in construction can be reduced, and pile sinking is facilitated; meanwhile, the strength of the concrete and/or cement soil in the gap is higher after solidification, so that the concrete and/or cement soil and tubular pile composite pile is formed, and the bearing capacity and stability of the pile are improved.
When the static pressure method is adopted for construction and a single pile is a single-section tubular pile, an enlarged end plate arranged at the bottom of the pile is flexibly connected with a steel strand embedded in a pile body, a static pressure pile machine can easily clamp and pull out the tubular pile after pile sinking is completed due to the existence of pile side gaps, the end plate and the pile body are separated due to tension when the tubular pile is pulled out, the tubular pile is only connected through the steel strand, concrete and/or cement soil can be injected into a gap formed by pulling out the tubular pile upwards through a central cavity of the tubular pile, the cavity at the top of the tubular pile is sealed by a steel plate after the tubular pile is partially or completely pulled out, pile sinking operation is carried out again to compact the concrete and/or the cement soil, a squeezed and expanded concrete and/or cement soil and tubular pile composite pile is formed, and the bearing capacity.
Claims (2)
1. A construction method of an in-wall grouting pipe pile is characterized by comprising the following steps:
(1) when the concrete pipe pile is prefabricated, grouting steel pipes are buried in the wall of the concrete pipe pile and serve as grouting pipes and reinforcing bars of the concrete pipe pile, the diameter of each grouting steel pipe is 1-5cm, the number of the grouting steel pipes is 2-8, and the grouting steel pipes are distributed in a circular shape at equal intervals; the grouting steel pipe is provided with threaded grouting holes at the pile side and the pile end of the concrete pipe, and the threaded grouting holes are respectively called a pile side threaded grouting hole and a pile top threaded grouting hole; the distance between the pile side thread grouting holes is 50-500 cm; arranging an enlarged end plate with the diameter 1-30cm larger than the outer diameter of the tubular pile at the bottom of the tubular pile, reserving a hole at the position of the threaded grouting hole on the end plate, welding the end plate with the pile body or flexibly connecting the end plate with a steel strand embedded in the pile body, wherein the length of the steel strand is 5-30 cm; a wireless pressure sensor is arranged in the end plate;
(2) when the length of a single pile needs to be connected by a plurality of sections of tubular piles, connecting grouting steel pipes between two adjacent sections of tubular piles by arranging spindle-shaped hollow steel pipes, respectively embedding small ends at the upper end and the lower end of each connecting pipe into the grouting steel pipes of the two adjacent sections of tubular piles and sealing the small ends with rubber pads, wherein the embedding length is 3-10cm, the middle expansion part is positioned between the two adjacent sections of tubular piles, and the length is the same as the connecting length of the tubular piles;
the construction of the tubular pile can adopt a static pressure method or a hammering method: when a static pressure method is adopted, the pile top thread grouting hole is in threaded connection with an external grouting hose; when the hammering method is adopted, the uppermost pile side thread grouting hole is in threaded connection with an external grouting hose; the pile is sunk, and simultaneously concrete and/or cement soil are injected into the pile under high pressure by external grouting equipment, because the diameter of the expanded end plate is 1-30cm larger than the outer diameter of the pipe pile, a gap is generated between the outer wall of the pipe pile and a soil body, when slurry is injected into the gap under high pressure through the pile side grouting hole, the gap can be increased by cutting the soil body, the friction force in construction can be reduced, and pile sinking is facilitated; meanwhile, the strength of the concrete and/or cement soil in the gap is higher after solidification, so that the concrete and/or cement soil and tubular pile composite pile is formed, and the bearing capacity and stability of the pile are improved.
2. The construction method of the in-wall grouting pipe pile as claimed in claim 1, wherein the construction method comprises the following steps: when the static pressure method is adopted for construction and a single pile is a single-section tubular pile, an enlarged end plate arranged at the bottom of the pile is flexibly connected with a steel strand embedded in a pile body, a static pressure pile machine can easily clamp and pull out the tubular pile after pile sinking is completed due to the existence of pile side gaps, the end plate and the pile body are separated due to tension when the tubular pile is pulled out, the tubular pile is only connected through the steel strand, concrete and/or cement soil can be injected into a gap formed by pulling out the tubular pile upwards through a central cavity of the tubular pile, the cavity at the top of the tubular pile is sealed by a steel plate after the tubular pile is partially or completely pulled out, pile sinking operation is carried out again to compact the concrete and/or the cement soil, a squeezed and expanded concrete and/or cement soil and tubular pile composite pile is formed, and the bearing capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810650073.3A CN108755668B (en) | 2018-06-22 | 2018-06-22 | Pile construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810650073.3A CN108755668B (en) | 2018-06-22 | 2018-06-22 | Pile construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108755668A CN108755668A (en) | 2018-11-06 |
| CN108755668B true CN108755668B (en) | 2020-04-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810650073.3A Active CN108755668B (en) | 2018-06-22 | 2018-06-22 | Pile construction method |
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| Country | Link |
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| CN (1) | CN108755668B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2272459Y (en) * | 1995-04-10 | 1998-01-14 | 中国建筑科学研究院地基基础研究所 | Pile-side mortar-pressing device for mud wall-protection pouring pile |
| CN201874006U (en) * | 2010-12-13 | 2011-06-22 | 河南省电力勘测设计院 | Intubating grouting base of transmission line iron tower |
| CN202543906U (en) * | 2012-03-27 | 2012-11-21 | 浙江大学城市学院 | Precast pile with reserved grouting pipes |
| CN102953372A (en) * | 2012-11-14 | 2013-03-06 | 福建工程学院 | Steel pipe pile and construction method thereof |
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2018
- 2018-06-22 CN CN201810650073.3A patent/CN108755668B/en active Active
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| Publication number | Publication date |
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| CN108755668A (en) | 2018-11-06 |
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