CN113882361A - Steel pipe-reinforced concrete composite pile - Google Patents
Steel pipe-reinforced concrete composite pile Download PDFInfo
- Publication number
- CN113882361A CN113882361A CN202111260480.1A CN202111260480A CN113882361A CN 113882361 A CN113882361 A CN 113882361A CN 202111260480 A CN202111260480 A CN 202111260480A CN 113882361 A CN113882361 A CN 113882361A
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- Prior art keywords
- pile
- steel pipe
- reinforced concrete
- concrete
- steel
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 68
- 239000010959 steel Substances 0.000 title claims abstract description 68
- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 62
- 239000002131 composite material Substances 0.000 title claims description 12
- 239000004567 concrete Substances 0.000 claims abstract description 43
- 238000010276 construction Methods 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000002689 soil Substances 0.000 claims abstract description 7
- 238000005553 drilling Methods 0.000 claims description 6
- 238000010008 shearing Methods 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- 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
- E02D5/24—Prefabricated piles
- E02D5/28—Prefabricated piles made of steel or other metals
- E02D5/285—Prefabricated piles made of steel or other metals tubular, e.g. prefabricated from sheet pile elements
-
- 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
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/66—Mould-pipes or other moulds
- E02D5/665—Mould-pipes or other moulds for making piles
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D9/00—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof
- E02D9/04—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof by cutting-off under water
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a steel pipe-reinforced concrete combined pile; it is characterized in that; the steel pipe-reinforced concrete pile is a combined structure of two types of piles, wherein a pile body is divided into 3 sections, the lower part of the pile body is provided with a reinforced concrete pile (1), the upper part of the pile body is provided with a steel pipe pile (2), and the middle part of the pile body is provided with a steel pipe concrete-coated pile (3); and the reinforced concrete pile and the steel pipe pile are connected by a steel-concrete connecting piece (4) in the middle. The invention solves the problems that a temporary structure with large bearing capacity in a deep and soft soil layer or a water area environment requires a pile foundation with large vertical and horizontal bearing capacity, large horizontal deformation resistance, convenient construction and removal and small influence on the water area environment.
Description
Technical Field
The invention relates to the field of bridge construction, in particular to a steel pipe-reinforced concrete composite pile.
Background
Pile foundations, which are the most common form of foundation, are constructed in deep and soft soil layers or in water areas such as rivers, lakes, seas, etc. to build temporary structures with large bearing capacity. The pile foundation mainly comprises a steel pipe pile and a concrete pile.
The steel pipe pile has the advantages of convenient and quick construction, large horizontal bearing capacity and strong deformation resistance. However, for the pile with overlarge vertical bearing capacity, the steel pipe pile is difficult to be inserted and driven to the designed depth, so that the requirement on the bearing capacity is difficult to meet. If the steel pipe pile is inserted and driven too deeply, the later period is difficult to pull out, so that the material loss is large, and the pile head left on the bed surface of the water area can influence the underwater dredging work or navigation safety.
The reinforced concrete pile has the disadvantages of large vertical bearing capacity, small horizontal deformation resistance, difficult demolition, large environmental pollution caused by demolition work and the like.
Disclosure of Invention
Therefore, in order to solve the above-mentioned disadvantages, the present invention provides a steel pipe-reinforced concrete composite pile; the temporary structure with large bearing capacity in deep and soft soil layers or water area environments meets the requirements that a pile foundation is large in vertical and horizontal bearing capacity, large in horizontal deformation resistance, convenient to construct and dismantle and small in influence on the water area environments.
The invention is realized in this way, construct a kind of steel tube-reinforced concrete composite pile, characterized by that; the steel pipe-reinforced concrete is a combined structure of two types of piles, wherein a pile body is divided into 3 sections, the lower part of the pile body is provided with a reinforced concrete pile, the upper part of the pile body is provided with a steel pipe pile, and the middle part of the pile body is provided with a steel pipe externally-wrapped concrete pile; and the reinforced concrete pile and the steel pipe pile are connected by a steel-concrete connecting piece in the middle.
The steel pipe-reinforced concrete combined pile is characterized in that the steel pipe-reinforced concrete combined pile is provided with a pile body; the construction process comprises the following steps: putting down a steel pipe pile (pile casing) → drilling, cleaning holes, putting down a reinforcement cage → pouring concrete to a height h1 → constructing a reinforced concrete connector → pouring concrete to a height h 2; the construction requirements are as follows:
the specification and model of the steel pipe are determined by calculation according to the requirements of vertical bearing capacity and horizontal bearing capacity. Adopting a steel pipe pile as a pile casing for drilling construction of the reinforced concrete pile; the bottom of the steel pipe (pile casing) is embedded into the position of the depth H below the designed top surface of the reinforced concrete pile;
secondly, the pile length of the reinforced concrete pile is determined by calculation according to the requirement of vertical bearing capacity; pouring concrete twice, after the concrete is poured to the designed height h1 for the first time, constructing a steel-concrete connecting piece, then pouring the concrete to the height h2 for the second time, and completely embedding the steel-concrete connecting piece into the pile foundation concrete poured for the second time; the top surface elevation h2 of the reinforced concrete pile is designed by considering the requirements of temporary structure removal (such as underwater desilting, navigation safety and the like), and is lower than the bed surface of a water area by a certain depth L2;
the steel-concrete connecting piece transfers the vertical force of the steel pipe and the reinforced concrete pile through self shearing force, and can adopt a perforated plate connecting piece or a shearing nail, and the specification and the model of the steel-concrete connecting piece are determined by calculation according to the stress;
when the steel pipe-reinforced concrete is dismantled, the steel pipe pile can be cut off from the top surface (h 2) of the reinforced concrete pile in an underwater cutting mode, and the pile body at the middle lower part is left below the depth L2 of the soil layer, so that the influence on the environment is eliminated.
The invention has the following advantages: the invention provides a steel pipe-reinforced concrete composite pile; the temporary structure with large bearing capacity in deep and soft soil layers or water area environments meets the requirements that a pile foundation is large in vertical and horizontal bearing capacity, large in horizontal deformation resistance, convenient to construct and dismantle and small in influence on the water area environments. The steel pipe-reinforced concrete composite pile described in this patent combines two types of piles together, the lower part is a reinforced concrete pile, the upper part is a steel pipe pile, and the reinforced concrete pile and the steel pipe are connected by a reinforced concrete connecting piece. The reinforced concrete pile at the lower part can provide larger vertical bearing capacity, and the steel pipe pile at the upper part can provide larger horizontal bearing capacity and larger horizontal deformability. The later-stage dismantling is easy, and the water area environment is not influenced.
Drawings
FIG. 1 is a construction view of a steel pipe-reinforced concrete composite pile in elevation;
fig. 2 is a schematic view of a corresponding steel-concrete joint construction according to the present invention.
Wherein: the steel pipe pile comprises a reinforced concrete pile 1, a steel pipe pile 2, a steel pipe outer-wrapped concrete pile 3, a steel-concrete connecting piece 4, a steel pipe wall 5, a perforated plate 6 and a twisted steel bar 7; the steel-concrete joint 4 is composed of 6 and 7.
Detailed Description
The present invention will be described in detail with reference to fig. 1-2, and the technical solutions in the embodiments of the present invention will be clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The present invention provides a steel pipe-reinforced concrete composite pile by improvement, as shown in fig. 1-2, which can be implemented as follows; the steel pipe-reinforced concrete is a combined structure of two types of piles, wherein a pile body is divided into 3 sections, the lower part of the pile body is provided with a reinforced concrete pile 1, the upper part of the pile body is provided with a steel pipe pile 2, and the middle part of the pile body is provided with a steel pipe concrete-coated pile 3; and the reinforced concrete pile and the steel pipe pile are connected by a steel-concrete connecting piece 4 in the middle.
The steel pipe-reinforced concrete combined pile comprises the following construction processes: putting down a steel pipe pile (pile casing) → drilling, cleaning holes, putting down a reinforcement cage → pouring concrete to a height h1 → constructing a reinforced concrete connector → pouring concrete to a height h 2; the construction requirements are as follows:
the specification and model of the steel pipe are determined by calculation according to the requirements of vertical bearing capacity and horizontal bearing capacity. Adopting a steel pipe pile as a pile casing for drilling construction of the reinforced concrete pile; the bottom of the steel pipe (pile casing) is embedded into the position of the depth H below the designed top surface of the reinforced concrete pile;
secondly, the pile length of the reinforced concrete pile is determined by calculation according to the requirement of vertical bearing capacity; pouring concrete twice, after the concrete is poured to the designed height h1 for the first time, constructing a steel-concrete connecting piece, then pouring the concrete to the height h2 for the second time, and completely embedding the steel-concrete connecting piece into the pile foundation concrete poured for the second time; the top surface elevation h2 of the reinforced concrete pile is designed by considering the requirements of temporary structure removal (such as underwater desilting, navigation safety and the like), and is lower than the bed surface of a water area by a certain depth L2;
the steel-concrete connecting piece transfers the vertical force of the steel pipe and the reinforced concrete pile through self shearing force, and can adopt a perforated plate connecting piece or a shearing nail, and the specification and the model of the steel-concrete connecting piece are determined by calculation according to the stress;
when the steel pipe-reinforced concrete is dismantled, the steel pipe pile can be cut off from the top surface (h 2) of the reinforced concrete pile in an underwater cutting mode, and the pile body at the middle lower part is left below the depth L2 of the soil layer, so that the influence on the environment is eliminated.
The patent has the advantages and beneficial effects that; the steel pipe-reinforced concrete composite pile described in this patent combines two types of piles together, the lower part is a reinforced concrete pile, the upper part is a steel pipe pile, and the reinforced concrete pile and the steel pipe are connected by a reinforced concrete connecting piece. The reinforced concrete pile at the lower part can provide larger vertical bearing capacity, and the steel pipe pile at the upper part can provide larger horizontal bearing capacity and larger horizontal deformability. The later-stage dismantling is easy, and the water area environment is not influenced.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (3)
1. A steel pipe-reinforced concrete composite pile is characterized in that; the steel pipe-reinforced concrete pile is a combined structure of two types of piles, wherein a pile body is divided into 3 sections, the lower part of the pile body is provided with a reinforced concrete pile (1), the upper part of the pile body is provided with a steel pipe pile (2), and the middle part of the pile body is provided with a steel pipe concrete-coated pile (3); and the reinforced concrete pile and the steel pipe pile are connected by a steel-concrete connecting piece (4) in the middle.
2. A steel pipe-reinforced concrete composite pile according to claim 1, wherein; the construction process comprises the following steps: putting down a steel pipe pile (pile casing) → drilling, cleaning holes, putting down a reinforcement cage → pouring concrete to a height h1 → constructing a reinforced concrete connector → pouring concrete to a height h 2; the construction requirements are as follows:
the specification and model of the steel pipe are determined by calculation according to the requirements of vertical bearing capacity and horizontal bearing capacity.
3. Adopting a steel pipe pile as a pile casing for drilling construction of the reinforced concrete pile; the bottom of the steel pipe (pile casing) is embedded into the position of the depth H below the designed top surface of the reinforced concrete pile;
secondly, the pile length of the reinforced concrete pile is determined by calculation according to the requirement of vertical bearing capacity; pouring concrete twice, after the concrete is poured to the designed height h1 for the first time, constructing a steel-concrete connecting piece, then pouring the concrete to the height h2 for the second time, and completely embedding the steel-concrete connecting piece into the pile foundation concrete poured for the second time; the top surface elevation h2 of the reinforced concrete pile is designed by considering the requirements of temporary structure removal (such as underwater desilting, navigation safety and the like), and is lower than the bed surface of a water area by a certain depth L2;
the steel-concrete connecting piece transfers the vertical force of the steel pipe and the reinforced concrete pile through self shearing force, and can adopt a perforated plate connecting piece or a shearing nail, and the specification and the model of the steel-concrete connecting piece are determined by calculation according to the stress;
when the steel pipe-reinforced concrete is dismantled, the steel pipe pile can be cut off from the top surface (h 2) of the reinforced concrete pile in an underwater cutting mode, and the pile body at the middle lower part is left below the depth L2 of the soil layer, so that the influence on the environment is eliminated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111260480.1A CN113882361A (en) | 2021-10-28 | 2021-10-28 | Steel pipe-reinforced concrete composite pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111260480.1A CN113882361A (en) | 2021-10-28 | 2021-10-28 | Steel pipe-reinforced concrete composite pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113882361A true CN113882361A (en) | 2022-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111260480.1A Pending CN113882361A (en) | 2021-10-28 | 2021-10-28 | Steel pipe-reinforced concrete composite pile |
Country Status (1)
| Country | Link |
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| CN (1) | CN113882361A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115387207A (en) * | 2022-09-09 | 2022-11-25 | 中铁广州工程局集团有限公司 | Shallow covering layer steel-concrete composite pile pier structure and construction method |
-
2021
- 2021-10-28 CN CN202111260480.1A patent/CN113882361A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115387207A (en) * | 2022-09-09 | 2022-11-25 | 中铁广州工程局集团有限公司 | Shallow covering layer steel-concrete composite pile pier structure and construction method |
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