CN111676986A - Large-diameter steel pipe pile and miniature pile combined supporting structure and construction method - Google Patents
Large-diameter steel pipe pile and miniature pile combined supporting structure and construction method Download PDFInfo
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- CN111676986A CN111676986A CN202010694127.3A CN202010694127A CN111676986A CN 111676986 A CN111676986 A CN 111676986A CN 202010694127 A CN202010694127 A CN 202010694127A CN 111676986 A CN111676986 A CN 111676986A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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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
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- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a large-diameter steel pipe pile and miniature pile combined supporting structure and a construction method, wherein the large-diameter steel pipe pile and miniature pile combined supporting structure comprises more than two large-diameter steel pipe piles embedded in a foundation at intervals, I-shaped steel arranged along the axial direction of each large-diameter steel pipe pile is symmetrically fixed on the outer walls of two sides of each large-diameter steel pipe pile respectively, and the flange at one end of each I-shaped steel is fixedly connected with the outer wall of each large-diameter steel pipe pile; pile holes are respectively formed between two adjacent large-diameter steel pipe piles, I-shaped steel on two sides of each large-diameter steel pipe pile is respectively arranged in the pile holes on the corresponding side, a small-diameter steel pipe pile is further arranged in each pile hole, and a flange at the other end of each I-shaped steel is arranged in the small-diameter steel pipe pile on the corresponding side; concrete is respectively poured in each pile hole. The invention can increase the integral supporting capability and section rigidity of the combined retaining structure.
Description
Technical Field
The invention relates to the field of supporting structures, in particular to a large-diameter steel pipe pile and miniature pile combined supporting structure and a construction method.
Background
For a long time, most of foundation pit supporting engineering forms are reinforced concrete supporting and steel structure supporting, and particularly, the reinforced concrete supporting is very widely applied. However, with the development of engineering technology, the reinforced concrete supporting system structure has defects in the aspects of manufacturing cost, construction period, environmental protection and the like, and nowadays, the construction technology of the pile by the PC construction method tends to be mature, and the reinforced concrete supporting system structure is suitable for supporting engineering of coastal soft soil deep foundation pits. The process mainly adopts various materials such as section steel, steel plates, steel pipe piles and the like, the materials can be randomly combined and spliced to form the fender piles in different forms, and different combination forms can be selected according to actual engineering forms. Conventional combined steel piles include combined steel pipe piles, combined U-shaped pipe piles or Larsen steel plate piles. The combined steel piles are widely applied to foundation pit supporting engineering. However, since the combined steel pile is formed by rigid connection, the joint part of the connecting joint is easy to deform and even break due to the large stress of the whole combined steel pile. The simple steel plate pile or steel pipe pile has small section rigidity, and a multilayer anchor supporting structure is needed when the steel plate pile or steel pipe pile is applied to a deep foundation pit, so that the construction difficulty and the construction cost are increased, and the advantages of rapidness and high efficiency are difficult to exert. Therefore, a novel combination is needed to be researched, so that the contact stability can be realized, the section rigidity of the steel pipe pile can be improved, the anchor structure is reduced, and the construction cost is reduced. .
Disclosure of Invention
The invention aims to provide a large-diameter steel pipe pile and micro pile combined supporting structure and a construction method, which can increase the integral supporting capacity and section rigidity of a combined supporting and retaining structure.
In order to achieve the purpose, the invention adopts the following technical scheme:
the combined supporting structure of the large-diameter steel pipe pile and the miniature pile comprises more than two large-diameter steel pipe piles embedded in a foundation at intervals, I-shaped steel arranged along the axial direction of each large-diameter steel pipe pile is symmetrically fixed on the outer walls of two sides of each large-diameter steel pipe pile respectively, and the flange at one end of each I-shaped steel is fixedly connected with the outer wall of each large-diameter steel pipe pile; pile holes are respectively formed between two adjacent large-diameter steel pipe piles, I-shaped steel on two sides of each large-diameter steel pipe pile is respectively arranged in the pile holes on the corresponding side, a small-diameter steel pipe pile is further arranged in each pile hole, and a flange at the other end of each I-shaped steel is arranged in the small-diameter steel pipe pile on the corresponding side; concrete is respectively poured in each pile hole.
The outer diameter of the large-diameter steel pipe pile is more than 600 mm.
The inner diameter of the pile hole is 300mm, and the outer diameter of the small-diameter steel pipe pile is 114 mm and 273 mm.
And the I-shaped steel is fixed on the outer wall of the large-diameter steel pipe pile by welding.
The small-diameter steel pipe pile is composed of two semicircular pipes which are symmetrically arranged.
The construction method of the large-diameter steel pipe pile and miniature pile combined supporting structure comprises the following steps:
1) drilling pile holes A and pile holes B which are arranged at intervals on a foundation, sinking large-diameter steel pipe piles A of which two sides are respectively fixed with I-steel between the pile holes A and the pile holes B, and sinking the I-steel at two sides of the large-diameter steel pipe piles A into the pile holes A and the pile holes B respectively; sinking a small-diameter steel pipe pile A into the pile hole A, and then pouring concrete into the pile hole A to form a micro pile A;
2) drilling a pile hole C on one side of the pile hole B, sinking a large-diameter steel pipe pile B with I-shaped steel fixed on two sides between the pile hole B and the pile hole C, sinking the I-shaped steel on two sides of the large-diameter steel pipe pile B into the pile hole B and the pile hole C respectively, sinking a small-diameter steel pipe pile B into the pile hole B, and then pouring concrete into the pile hole B to form a miniature pile B;
3) drilling a pile hole D on one side of the pile hole C, sinking a large-diameter steel pipe pile C with I-shaped steel fixed on two sides between the pile hole C and the pile hole D, sinking the I-shaped steel on two sides of the large-diameter steel pipe pile C into the pile hole C and the pile hole D respectively, sinking a small-diameter steel pipe pile C into the pile hole C, and then pouring concrete into the pile hole C to form a miniature pile C;
4) and analogizing until the last large-diameter steel pipe pile is constructed, inserting the small-diameter steel pipe pile into the pile hole of which the disc side of the last large-diameter steel pipe pile is not filled with concrete, and injecting concrete, thereby finally forming the large-diameter steel pipe pile and micro pile combined supporting structure.
By adopting the technical scheme, the invention has the following beneficial effects: the major diameter steel-pipe pile passes through the I-steel with miniature stake and realizes being connected, can realize the combination of steel-pipe pile, realizes miniature concrete steel pipe pile again through the cast-in-place concrete to increase the whole support ability and the cross-section rigidity of combination retaining structure.
Drawings
The invention is described in further detail below with reference to the accompanying drawings and the detailed description;
FIG. 1 is a schematic view of a combined supporting structure of a large-diameter steel pipe pile and a micro pile according to the present invention;
FIG. 2 is a schematic view of step 1) of the construction method of the present invention;
FIG. 3 is a schematic view of steps 2) and 3) of the construction method of the present invention.
Detailed Description
As shown in fig. 1, the combined supporting structure of the large-diameter steel pipe pile 1 and the micro-pile of the invention comprises more than two large-diameter steel pipe piles 1 embedded in a foundation at intervals, i-shaped steels 2 arranged along the axial direction of each large-diameter steel pipe pile 1 are symmetrically fixed on the outer walls of two sides of each large-diameter steel pipe pile 1 respectively, and the flange at one end of each i-shaped steel 2 is fixedly connected with the outer wall of each large-diameter steel pipe pile 1; pile holes 3 are respectively formed between every two adjacent large-diameter steel pipe piles 1, the I-shaped steel 2 on two sides of each large-diameter steel pipe pile 1 is respectively arranged in the corresponding pile hole 3, a small-diameter steel pipe pile 4 is also arranged in each pile hole 3, and the flange at the other end of each I-shaped steel 2 is arranged in the corresponding small-diameter steel pipe pile 4; concrete 5 is poured into each pile hole 3.
The outer diameter of the large-diameter steel pipe pile 1 is more than 600 mm. The inner diameter of the pile hole 3 is 300mm, and the outer diameter of the small-diameter steel pipe pile 4 is 114 mm and 273 mm.
And the I-shaped steel 2 is fixed on the outer wall of the large-diameter steel pipe pile 1 by welding.
The small-diameter steel pipe pile 4 is composed of two semicircular pipes which are symmetrically arranged.
As shown in fig. 2 or 3, the construction method of the large-diameter steel pipe pile and micro pile combined supporting structure of the invention comprises the following steps:
1) drilling pile holes A and pile holes B which are arranged at intervals on a foundation, sinking large-diameter steel pipe piles A of which two sides are respectively fixed with I-steel between the pile holes A and the pile holes B, and sinking the I-steel at two sides of the large-diameter steel pipe piles A into the pile holes A and the pile holes B respectively; sinking a small-diameter steel pipe pile A into the pile hole A, and then pouring concrete into the pile hole A to form a micro pile A;
2) drilling a pile hole C on one side of the pile hole B, sinking a large-diameter steel pipe pile B with I-shaped steel fixed on two sides between the pile hole B and the pile hole C, sinking the I-shaped steel on two sides of the large-diameter steel pipe pile B into the pile hole B and the pile hole C respectively, sinking a small-diameter steel pipe pile B into the pile hole B, and then pouring concrete into the pile hole B to form a miniature pile B;
3) drilling a pile hole D on one side of the pile hole C, sinking a large-diameter steel pipe pile C with I-shaped steel fixed on two sides between the pile hole C and the pile hole D, sinking the I-shaped steel on two sides of the large-diameter steel pipe pile C into the pile hole C and the pile hole D respectively, sinking a small-diameter steel pipe pile C into the pile hole C, and then pouring concrete into the pile hole C to form a miniature pile C;
4) and analogizing until the last large-diameter steel pipe pile is constructed, inserting the small-diameter steel pipe pile into the pile hole of which the disc side of the last large-diameter steel pipe pile is not filled with concrete, and injecting concrete, thereby finally forming the large-diameter steel pipe pile and micro pile combined supporting structure.
While the invention has been described in connection with the above embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, which are illustrative and not restrictive, and that those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (6)
1. Major diameter steel-pipe pile and miniature pile combination supporting construction, its characterized in that: the large-diameter steel pipe pile comprises more than two large-diameter steel pipe piles embedded in a foundation at intervals, I-shaped steel arranged along the axial direction of each large-diameter steel pipe pile is symmetrically fixed on the outer walls of two sides of each large-diameter steel pipe pile respectively, and the flange at one end of each I-shaped steel is fixedly connected with the outer wall of each large-diameter steel pipe pile; pile holes are respectively formed between two adjacent large-diameter steel pipe piles, I-shaped steel on two sides of each large-diameter steel pipe pile is respectively arranged in the pile holes on the corresponding side, a small-diameter steel pipe pile is further arranged in each pile hole, and a flange at the other end of each I-shaped steel is arranged in the small-diameter steel pipe pile on the corresponding side; concrete is respectively poured in each pile hole.
2. The large-diameter steel pipe pile and micro pile combined supporting structure according to claim 1, characterized in that: the outer diameter of the large-diameter steel pipe pile is more than 600 mm.
3. The large-diameter steel pipe pile and micro pile combined supporting structure according to claim 1, characterized in that: the inner diameter of the pile hole is 300mm, and the outer diameter of the small-diameter steel pipe pile is 114 mm and 273 mm.
4. The large-diameter steel pipe pile and micro pile combined supporting structure according to claim 1, characterized in that: and the I-shaped steel is fixed on the outer wall of the large-diameter steel pipe pile by welding.
5. The large-diameter steel pipe pile and micro pile combined supporting structure according to claim 1, characterized in that: the small-diameter steel pipe pile is composed of two semicircular pipes which are symmetrically arranged.
6. The construction method of a large-diameter steel pipe pile and micro pile combined supporting structure as claimed in any one of claims 1 to 5, wherein: which comprises the following steps:
1) drilling pile holes A and pile holes B which are arranged at intervals on a foundation, sinking large-diameter steel pipe piles A of which two sides are respectively fixed with I-steel between the pile holes A and the pile holes B, and sinking the I-steel at two sides of the large-diameter steel pipe piles A into the pile holes A and the pile holes B respectively; sinking a small-diameter steel pipe pile A into the pile hole A, and then pouring concrete into the pile hole A to form a micro pile A;
2) drilling a pile hole C on one side of the pile hole B, sinking a large-diameter steel pipe pile B with I-shaped steel fixed on two sides between the pile hole B and the pile hole C, sinking the I-shaped steel on two sides of the large-diameter steel pipe pile B into the pile hole B and the pile hole C respectively, sinking a small-diameter steel pipe pile B into the pile hole B, and then pouring concrete into the pile hole B to form a miniature pile B;
3) drilling a pile hole D on one side of the pile hole C, sinking a large-diameter steel pipe pile C with I-shaped steel fixed on two sides between the pile hole C and the pile hole D, sinking the I-shaped steel on two sides of the large-diameter steel pipe pile C into the pile hole C and the pile hole D respectively, sinking a small-diameter steel pipe pile C into the pile hole C, and then pouring concrete into the pile hole C to form a miniature pile C;
4) and analogizing until the last large-diameter steel pipe pile is constructed, inserting the small-diameter steel pipe pile into the pile hole of which the disc side of the last large-diameter steel pipe pile is not filled with concrete, and injecting concrete, thereby finally forming the large-diameter steel pipe pile and micro pile combined supporting structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010694127.3A CN111676986A (en) | 2020-07-17 | 2020-07-17 | Large-diameter steel pipe pile and miniature pile combined supporting structure and construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010694127.3A CN111676986A (en) | 2020-07-17 | 2020-07-17 | Large-diameter steel pipe pile and miniature pile combined supporting structure and construction method |
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| CN111676986A true CN111676986A (en) | 2020-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010694127.3A Pending CN111676986A (en) | 2020-07-17 | 2020-07-17 | Large-diameter steel pipe pile and miniature pile combined supporting structure and construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113235609A (en) * | 2021-05-02 | 2021-08-10 | 李延宁 | Major diameter steel-pipe pile and miniature stake combination supporting construction |
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2020
- 2020-07-17 CN CN202010694127.3A patent/CN111676986A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113235609A (en) * | 2021-05-02 | 2021-08-10 | 李延宁 | Major diameter steel-pipe pile and miniature stake combination supporting construction |
| CN113235609B (en) * | 2021-05-02 | 2022-11-25 | 汕头市韩江建设有限公司 | Combined supporting structure of large-diameter steel pipe pile and small-diameter steel pipe pile |
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