CN108978667B - Positioning connection structure of steel pipe pile and cast-in-place pile and construction method thereof - Google Patents
Positioning connection structure of steel pipe pile and cast-in-place pile and construction method thereof Download PDFInfo
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- CN108978667B CN108978667B CN201811146392.7A CN201811146392A CN108978667B CN 108978667 B CN108978667 B CN 108978667B CN 201811146392 A CN201811146392 A CN 201811146392A CN 108978667 B CN108978667 B CN 108978667B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 100
- 239000010959 steel Substances 0.000 title claims abstract description 100
- 238000010276 construction Methods 0.000 title claims abstract description 21
- 230000002787 reinforcement Effects 0.000 claims abstract description 74
- 238000003466 welding Methods 0.000 claims description 4
- 238000011065 in-situ storage Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Classifications
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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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- 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
- E02D5/36—Concrete or concrete-like piles cast in position ; Apparatus for making same making without use of mouldpipes or other moulds
-
- 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
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a positioning connection structure of a steel pipe pile and a cast-in-place pile and a construction method thereof, which are characterized in that: the structure form of the bored concrete pile reinforcement cage placed in the pile hole is: an outer layer reinforcement cage in a hollow cylinder shape is formed by an outer ring spiral stirrup and an outer ring longitudinal vertical reinforcement, a reinforcement grid is welded at a set axial position in the outer layer reinforcement cage to form a grid surface on the cross section of the outer layer reinforcement cage, and an inner layer reinforcement cage is welded and installed on the reinforcement grid towards one end where a steel pipe pile is located; the lower end of the upright post steel pipe is inserted into a bored concrete pile reinforcement cage and sleeved on the inner layer reinforcement cage to obtain radial positioning, the bottom opening of the upright post steel pipe is supported on the plane of the reinforcement grid to obtain axial positioning, and the top opening of the upright post steel pipe protrudes from the pile hole opening; and pouring concrete in the pile holes to connect the steel pipe piles and the cast-in-place piles. The invention realizes that the whole pile combined by the steel pipe pile and the bored pile has good integrity and strength.
Description
Technical Field
The invention belongs to the technical field of building construction, and particularly relates to a connecting structure of a steel pipe pile and a cast-in-place pile and a construction method thereof.
Background
The urban process is continuously accelerated, the effective use area of the land is continuously reduced, the building is forced to develop into the ground, and the requirements on pile foundations are higher and higher due to the complex stress condition of the underground building. The single use of the bored pile has the advantages of mature construction process, high bearing capacity and wide application range, but also has the problems of long construction period and large engineering quantity, and some underground engineering can be used as a market, so that the bored pile has large diameter and is not attractive. The steel pipe pile has the advantages of simple structure, convenient use, strong bearing capacity and small size, is suitable for being used as an indoor pile, and also has the problems of complex pile sinking equipment, large vibration and noise, difficult pile protection, easy corrosion, large steel consumption, high engineering cost and the like, and needs to carry out full technical and economic analysis and comparison during selection.
The on-site construction condition and various time economic factors are comprehensively considered, and the construction is performed by adopting a mode of combining the steel pipe pile and the bored pile, so that the advantages of the steel pipe pile and the bored pile are combined, and better construction and use effects are achieved. How to properly connect the steel pipe pile and the bored pile, so that the whole pile has good integrity and strength, and the reasonable stress of the structure is the problem to be solved at present.
Disclosure of Invention
Aiming at the problems existing in the prior art, the invention provides a positioning connection structure of a steel pipe pile and a bored pile and a construction method thereof, so as to properly connect the steel pipe pile and the bored pile, and ensure that the whole pile combined by the steel pipe pile and the bored pile has good integrity and strength.
The invention adopts the following technical scheme for solving the technical problems:
the positioning and connecting structure of the steel pipe pile and the filling pile is characterized in that: the structure form of the bored concrete pile reinforcement cage placed in the pile hole is: an outer layer reinforcement cage in a hollow cylinder shape is formed by an outer ring spiral stirrup and an outer ring longitudinal vertical reinforcement, a reinforcement grid is welded at a set axial position in the outer layer reinforcement cage to form a grid surface on the cross section of the outer layer reinforcement cage, and an inner layer reinforcement cage is welded and installed on the reinforcement grid towards one end where a steel pipe pile is located; the lower end of the upright post steel pipe is inserted into a bored concrete pile reinforcement cage and sleeved on the inner layer reinforcement cage to obtain radial positioning, the bottom opening of the upright post steel pipe is supported on the plane of the reinforcement grid to obtain axial positioning, and the top opening of the upright post steel pipe protrudes from the pile hole opening; and pouring concrete in the pile holes to connect the steel pipe piles and the cast-in-place piles.
The positioning and connecting structure of the steel pipe pile and the filling pile is also characterized in that: and welding radial pegs on the outer cylindrical surface of the upright post steel pipe, wherein the radial pegs are distributed in an array manner.
The positioning and connecting structure of the steel pipe pile and the filling pile is also characterized in that: the bottom opening of the upright post steel pipe extends into the bored concrete pile reinforcement cage to a depth of not less than 2m so as to meet the lap joint requirement of the design pile.
The positioning connection construction method of the steel pipe pile and the cast-in-place pile is characterized by comprising the following steps:
step 1, preparing a cast-in-place pile reinforcement cage and upright post steel pipes;
step 2, forming holes in the pile holes, and hanging and positioning a cast-in-place pile reinforcement cage in the pile holes;
step 3, pouring the concrete of the cast-in-place pile in advance, namely extending a concrete conduit to the bottom of the cast-in-place pile for pouring, and stopping pouring when the top surface of the concrete rises to the bottom plane of the steel bar grid to finish the pouring of the concrete of the cast-in-place pile in advance;
step 4, when the cast-in-place pile concrete poured in the earlier stage reaches the set strength, hanging upright post steel pipes into the cast-in-place pile reinforcement cage, enabling the upright post steel pipes to be sleeved on the inner layer reinforcement cage, enabling bottom openings of the upright post steel pipes to stand on the plane of the reinforcement grid, and enabling top openings of the upright post steel pipes to protrude from pile hole openings;
and 5, pouring concrete in the cast-in-place pile and the steel pipe column through the concrete guide pipe.
The positioning connection construction method of the steel pipe pile and the filling pile is also characterized in that:
c35 concrete is poured in advance in the step 3;
in the step 5, the pouring of the concrete in the cast-in-place pile and the steel pipe column is finished through the concrete guide pipe, namely, double guide pipes are adopted for simultaneous continuous pouring until reaching the elevation; one of the guide pipes is inserted into the outer part of the upright post steel pipe, an outer layer reinforcement cage is taken as a framework, and C35 concrete is poured; the other guide pipe is inserted into the upright post steel pipe, and C60 concrete is poured by taking the inner layer reinforcement cage as a framework;
the positioning connection construction method of the steel pipe pile and the filling pile is also characterized in that:
and a detachable stressed supporting bearing platform is arranged on the ground of the pile hole opening, and the supporting bearing platform is utilized to support the upright post steel pipe in an auxiliary mode.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention utilizes the filling pile to finish the positioning of the steel pipe pile, thereby greatly reducing the process flow;
2. the positioning structure is definite in stress, firm and reliable, and the safety of the construction process is greatly improved;
3. according to the invention, the radial pegs are arranged on the outer cylindrical surface of the upright post steel pipe, so that the connecting force of the upright post steel pipe and concrete is effectively enhanced;
4. the construction method is simple and convenient, few auxiliary materials are needed, the manufacture of the cast-in-place pile reinforcement cage and the upright post steel pipe is finished in the ground operation, and the operability is strong.
Drawings
FIG. 1 is a schematic diagram of a connecting structure of a cast-in-place pile and a steel pipe pile according to the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
reference numerals in the drawings: 1, filling a pile reinforcement cage; 2, upright post steel pipes; 3, an outer ring spiral stirrup; 4 pile holes; 5, outer ring longitudinal ribs; 6, a steel bar grid; 7, inner ring longitudinal ribs; 8, an inner ring spiral stirrup; 9 radial pegs; 10 ground; 11 inner layer reinforcement cages; 12 outer layer reinforcement cages; 13, filling pile concrete.
Detailed Description
Referring to fig. 1 and 2, the positioning connection structure of a steel pipe pile and a cast-in-place pile in this embodiment includes:
the cast-in-place pile cage 1 placed in the pile hole 4 has the structural form: the outer layer reinforcement cage 12 in a hollow cylinder shape is formed by the outer ring spiral stirrup 3 and the outer ring longitudinal stirrup 5, the reinforcement grid 6 is welded at the set axial position in the outer layer reinforcement cage to form a grid surface on the cross section of the outer layer reinforcement cage, the inner layer reinforcement cage 11 is welded and installed on the reinforcement grid 6 towards one end where the steel pipe pile is located, and the inner layer reinforcement cage is formed by welding the inner ring longitudinal stirrup 7 and the inner ring spiral stirrup 8.
The lower end of the upright steel tube 2 is inserted into the bored concrete pile reinforcement cage 1 and sleeved on an inner layer reinforcement cage to obtain radial positioning, and the height of the inner layer reinforcement cage 11 is preferably half of the length of the upright steel tube 2 extending into the bored concrete pile reinforcement cage; the bottom opening of the upright post steel pipe 2 is supported on the plane of the steel bar grid 6 to be axially positioned, and the top opening of the upright post steel pipe 2 protrudes from the pile hole opening. And pouring concrete in the pile holes to connect the steel pipe piles and the cast-in-place piles.
In a specific implementation, the corresponding structure arrangement also includes:
radial pegs 9 are welded on the outer cylindrical surface of the upright post steel pipe 2, the radial pegs 9 are cylindrical head pegs, the radial pegs 9 are distributed in an array on the outer cylindrical surface of the upright post steel pipe 2, eight radial pegs in each circle are arranged at intervals of 45 degrees, the interval is between 30 and 90 degrees, the interval between two adjacent circles is 0.25m, the interval is between 0.1 and 0.4m, and the interval can be staggered between rows or columns; the bottom opening of the upright post steel pipe 2 extends into the bored concrete pile reinforcement cage to a depth of not less than 2m so as to meet the lap joint requirement of the design pile, and meanwhile, the radial stud 9 is arranged along the axial direction of the upright post steel pipe to be not less than 2.5m.
The steel bar grid 6 is formed by welding small sections of straight bars with equal length, one end of each small section of straight bar is welded on the outer ring longitudinal vertical bar 5 at the corresponding position, and the other ends are welded together to form a central point, so that the whole grid is a radial grid; the inner layer reinforcement cage 11 is welded and fixed with the reinforcement grid 6.
The positioning connection construction method of the steel pipe pile and the cast-in-place pile in the embodiment comprises the following steps:
step 1, preparing a cast-in-place pile reinforcement cage 1 and a column steel pipe 2;
step 2, pile hole forming is carried out according to the construction method of the conventional bored pile, the bored pile reinforcement cage 1 is hung and positioned in the pile hole,
step 3, pouring the cast-in-place pile concrete 13 in advance, namely extending a concrete conduit to the bottom of the cast-in-place pile for pouring, and stopping pouring when the top surface of the concrete rises to the bottom plane of the steel bar grid 6, so as to finish the pouring of the C35 cast-in-place pile concrete 13 in advance;
step 4, when the cast-in-place pile concrete 13 poured in the earlier stage reaches the set strength, hanging the upright post steel pipes 2 into the cast-in-place pile reinforcement cage 1, enabling the upright post steel pipes 2 to be sleeved on the inner layer reinforcement cage 11, wherein the bottom openings of the upright post steel pipes 2 are supported on the plane of the reinforcement grid 6, and the top openings of the upright post steel pipes 2 are protruded from pile hole openings;
step 5, pouring concrete in the cast-in-place pile and the steel pipe column is completed through the concrete guide pipe, and the double guide pipes are adopted to perform continuous pouring simultaneously until reaching the elevation; one of the guide pipes is inserted into the outer part of the upright post steel pipe 2, an outer layer steel reinforcement cage is taken as a framework, and C35 concrete is poured; the other conduit is inserted into the upright post steel pipe 2, and C60 concrete is poured by taking the inner layer reinforcement cage as a framework;
in the construction process, a detachable stressed supporting bearing platform is required to be installed on the ground 10 of the pile hole opening, and the supporting bearing platform is utilized to assist in bearing the weight of the upright post steel pipe before pouring concrete and during the solidification of the concrete, so that the virtual lap of the upright post steel pipe on the steel bar grid is ensured, no weight or little load is borne on the steel bar grid, and deformation caused by bearing the load is avoided; after the concrete has certain strength, the platform is dismantled for recycling.
Claims (4)
1. A positioning connection structure of a steel pipe pile and a filling pile is characterized in that: the structure form of the bored concrete pile reinforcement cage (1) placed in the pile hole is as follows: an outer layer reinforcement cage (12) in a hollow cylinder shape is formed by an outer ring spiral stirrup (3) and an outer ring longitudinal vertical rib (5), a reinforcement grid (6) is welded at a set axial position in the outer layer reinforcement cage to form a grid surface on the cross section of the outer layer reinforcement cage, and an inner layer reinforcement cage (11) is welded and installed on the reinforcement grid (6) towards one end where a steel pipe pile is located; the lower end of the upright post steel pipe (2) is inserted into a bored concrete pile reinforcement cage and sleeved on the inner layer reinforcement cage to obtain radial positioning, the bottom opening of the upright post steel pipe (2) is supported on the plane of the reinforcement grid (6) to obtain axial positioning, and the top opening of the upright post steel pipe (2) protrudes from the pile hole opening; pouring concrete in the pile holes to realize connection between the steel pipe piles and the cast-in-situ piles; radial pegs are welded on the outer cylindrical surface of the upright post steel pipe (2), and are distributed in an array manner; the bottom opening of the upright post steel pipe (2) extends into the cast-in-place pile reinforcement cage to a depth of not less than 2m so as to meet the lap joint requirement of a designed pile; the inner layer reinforcement cage (11) is formed by welding an inner ring longitudinal vertical rib (7) and an inner ring spiral stirrup (8).
2. A construction method of the positioning connection structure of the steel pipe pile and the cast-in-place pile according to claim 1, characterized by comprising the steps of:
step 1, preparing a bored concrete pile reinforcement cage and upright post steel pipes (2);
step 2, forming holes in the pile holes, and hanging and positioning a cast-in-place pile reinforcement cage in the pile holes;
step 3, pouring the concrete of the cast-in-place pile in advance, namely extending a concrete conduit to the bottom of the cast-in-place pile for pouring, and stopping pouring when the top surface of the concrete rises to the bottom plane of the steel bar grid (6) to finish the pouring of the concrete of the cast-in-place pile in advance;
step 4, when the cast-in-place pile concrete poured in the earlier stage reaches the set strength, hanging the upright post steel pipe (2) into the cast-in-place pile reinforcement cage, enabling the upright post steel pipe (2) to be sleeved on the inner layer reinforcement cage, wherein the bottom opening of the upright post steel pipe (2) is supported on the plane of the reinforcement grid (6), and the top opening of the upright post steel pipe (2) protrudes from the pile hole opening;
and 5, pouring concrete in the cast-in-place pile and the steel pipe column through the concrete guide pipe.
3. The construction method of the positioning connection structure of a steel pipe pile and a bored concrete pile according to claim 2, characterized by:
c35 concrete is poured in advance in the step 3;
in the step 5, the pouring of the concrete in the cast-in-place pile and the steel pipe column is finished through the concrete guide pipe, namely, double guide pipes are adopted for simultaneous continuous pouring until reaching the elevation; one of the guide pipes is inserted into the outer part of the upright post steel pipe (2), an outer layer steel reinforcement cage is taken as a framework, and C35 concrete is poured; the other conduit is inserted into the upright post steel pipe (2), and C60 concrete is poured by taking the inner layer reinforcement cage as a framework.
4. The construction method of the positioning connection structure of a steel pipe pile and a bored concrete pile according to claim 2, characterized by: and a detachable stressed supporting bearing platform is arranged on the ground of the pile hole opening, and the supporting bearing platform is utilized to support the upright post steel pipe in an auxiliary mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811146392.7A CN108978667B (en) | 2018-09-29 | 2018-09-29 | Positioning connection structure of steel pipe pile and cast-in-place pile and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811146392.7A CN108978667B (en) | 2018-09-29 | 2018-09-29 | Positioning connection structure of steel pipe pile and cast-in-place pile and construction method thereof |
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| CN108978667A CN108978667A (en) | 2018-12-11 |
| CN108978667B true CN108978667B (en) | 2024-02-27 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826190A (en) * | 2019-02-15 | 2019-05-31 | 深圳市市政工程总公司 | The construction method of pile integral structure |
| CN110453720A (en) * | 2019-08-21 | 2019-11-15 | 中交二公局第五工程有限公司 | A kind of steel pipe post of big load falsework structure and basic connecting structure and its construction method |
| CN111622224B (en) * | 2020-06-06 | 2022-01-11 | 江西中恒地下空间科技有限公司 | Construction method of connected column pile in reverse construction method |
| CN112045285A (en) * | 2020-07-15 | 2020-12-08 | 中交第一航务工程局有限公司 | Steel pipe pile shear key installation process |
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| JP2004162414A (en) * | 2002-11-14 | 2004-06-10 | Shimizu Corp | Cast-in-place concrete filling steel pipe pile and construction method thereof |
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| CN107034876A (en) * | 2017-05-23 | 2017-08-11 | 上海建工建集团有限公司 | Stanchion connecting node and its construction method in one pile for one column construction |
| CN108457275A (en) * | 2017-02-22 | 2018-08-28 | 中国二十冶集团有限公司 | Cast-in-place pile concrete tamping equipment and its construction method |
| CN208933973U (en) * | 2018-09-29 | 2019-06-04 | 中铁二十四局集团安徽工程有限公司 | A kind of positioning connection structure of steel-pipe pile and bored concrete pile |
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2018
- 2018-09-29 CN CN201811146392.7A patent/CN108978667B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004162414A (en) * | 2002-11-14 | 2004-06-10 | Shimizu Corp | Cast-in-place concrete filling steel pipe pile and construction method thereof |
| CN103046542A (en) * | 2012-12-04 | 2013-04-17 | 中建三局建设工程股份有限公司 | Simultaneous construction technology for deep foundation pit inner support steel tube column and cast-in-place concrete pile |
| CN108457275A (en) * | 2017-02-22 | 2018-08-28 | 中国二十冶集团有限公司 | Cast-in-place pile concrete tamping equipment and its construction method |
| CN107034876A (en) * | 2017-05-23 | 2017-08-11 | 上海建工建集团有限公司 | Stanchion connecting node and its construction method in one pile for one column construction |
| CN208933973U (en) * | 2018-09-29 | 2019-06-04 | 中铁二十四局集团安徽工程有限公司 | A kind of positioning connection structure of steel-pipe pile and bored concrete pile |
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