CN113216238A - Pile group foundation pile top uniform stress conversion system - Google Patents
Pile group foundation pile top uniform stress conversion system Download PDFInfo
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- CN113216238A CN113216238A CN202110210967.2A CN202110210967A CN113216238A CN 113216238 A CN113216238 A CN 113216238A CN 202110210967 A CN202110210967 A CN 202110210967A CN 113216238 A CN113216238 A CN 113216238A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
- E02D27/16—Foundations formed of separate piles
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
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Abstract
The invention discloses a pile top uniform stress conversion system of a pile group foundation, which comprises at least 4 layers of section steel, wherein each layer is provided with at least 3 section steel, the section steel of each layer is orthogonally overlapped, the section steel of the uppermost layer is used for supporting upper structure load, and the section steel of the lowermost layer is arranged on the pile top of the pile group. The construction method is convenient to construct, the structural steel is stacked on the pile tops of the pile group foundation in an orthogonal manner layer by layer to support the upper structure, and the supporting reaction force between layers is continuously converted and distributed, so that the structural steel is finally and uniformly distributed on each pile top, and the problem that the pile group foundation directly bears the upper load under the condition that a pier stud bearing platform cannot be made due to the limitation of conditions such as clearance and the like is solved; and for the steel pipe pile group foundation of the temporary structure, the conversion system can avoid manufacturing a large bearing platform, has high construction speed and simple and convenient assembly and disassembly, can recycle the removed section steel, reduces waste, and can meet the requirement of uniform stress of the pile group.
Description
Technical Field
The invention relates to a pile top uniform stress conversion system for a pile group foundation.
Background
The pile group foundation generally faces the problem of uneven stress, a bearing platform with higher rigidity is generally required to be arranged on the pile top, and in the construction process, if the condition of clearance and the like limits that the bearing platform of the pier column cannot be made, the problem that the pile group foundation bears the upper load cannot be effectively solved, and the construction difficulty is increased to a certain extent; or when a temporary construction structure is encountered, the traditional concrete bearing platform has long construction period and is difficult to disassemble after use, so that the waste is large; if a steel structure bearing platform is used, the steel consumption is large and the hoisting is difficult.
If the pile top force transmission component is changed into a force transmission system that the stress of the upper structure is dispersed layer by overlapping multiple layers of rod pieces from the traditional large-volume bearing platform, the construction period can be effectively shortened, the construction difficulty is greatly reduced, and the temporary structure is relatively simple and much to disassemble. Moreover, the rod piece is generally made of national standard I-shaped steel or H-shaped steel, is easy to obtain, can be recycled after being disassembled, and reduces waste.
Disclosure of Invention
The invention aims to provide a pile top uniform stress conversion system of a pile group foundation, which is used for solving the problem that the pile group foundation directly bears upper load under the condition that a pier stud bearing platform cannot be used due to the limitation of conditions such as clearance and the like.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a group pile foundation pile top evenly receives force conversion system which characterized in that: the conversion system is composed of at least 4 layers of section steel, each layer is provided with at least 3 section steel, the section steel of each layer is orthogonally overlapped, the section steel of the uppermost layer is used for supporting the load of an upper structure, and the section steel of the lowermost layer is arranged on the top of the grouped piles.
Further, the section steel is I-shaped steel or H-shaped steel.
Furthermore, at least 3 layers of section steel are arranged in a stress structure of a simple supporting beam or a continuous beam.
Preferably, the side surfaces of the section steel are provided with stiffening ribs.
As a preferred embodiment of the invention, the conversion system consists of 5 layers of section steel;
the conversion system is formed by aligning and arranging 9 section steels from left to right from bottom to top on the first layer, the second layer is formed by aligning and arranging 6 section steels from front to back, the third layer is formed by aligning and arranging 6 section steels from left to right, the fourth layer is formed by aligning and arranging 11 section steels from front to back, and the fifth layer is formed by aligning and arranging 5 section steels from left to right.
Further, the first layer of section steel of the conversion system is divided into three groups on average, and each group of section steel is placed on the pile top of the pile group.
Furthermore, the second layer of section steel of the conversion system is averagely divided into two groups, each group of section steel is placed at two ends of the first layer of section steel, and the front end, the middle part and the rear end of each group of section steel of the second layer of section steel are correspondingly placed above the three groups of section steel of the first layer of section steel.
Further, the third layer shaped steel of conversion system averagely divides into two sets ofly, and every group shaped steel is placed at the both ends of second floor shaped steel, and the both ends correspondence of every group shaped steel of third layer shaped steel is placed in the top of two sets of shaped steel of second floor shaped steel.
Furthermore, two ends of the section steel of the fourth layer of the conversion system are correspondingly placed above the two groups of section steel of the third layer.
Further, the fifth layer of section steel of the conversion system is placed at a position in the middle of the fourth layer of section steel.
Compared with the prior art, the invention has the following beneficial effects:
(1) according to the pile top uniform stress conversion system of the pile group foundation, I-shaped steel or H-shaped steel is stacked on the pile top of the pile group foundation in an orthogonal manner layer by layer to support an upper structure, so that the load of the upper structure is distributed to the supporting reaction force of the first layer of section steel, the supporting reaction force is also used as the load of the next layer of section steel and is distributed to the supporting reaction force of the layer of section steel, and finally the supporting reaction force is uniformly distributed to each pile top through continuous conversion and distribution of the supporting reaction forces between layers, so that the problem that the pile group foundation directly supports the upper load under the condition that a pier column bearing platform cannot be made due to limitation of conditions such as clearance is solved;
(2) for the steel pipe pile group foundation with a temporary structure, the conversion system can avoid manufacturing a large bearing platform, has high construction speed and simple and convenient assembly and disassembly, can recycle the removed section steel, reduces waste, and can meet the requirement of uniform stress of the pile group.
(3) The invention sets the stress mode of at least 3 layers of section steel as a simple supported beam or a continuous beam, so that the force transmission between each layer of section steel is simple and direct, and the load calculation is convenient.
(4) The invention also arranges stiffening ribs on the side surface of the section steel to increase the external rigidity and reduce the instability risk.
Drawings
FIG. 1 is a schematic perspective view of an embodiment of the present invention;
FIG. 2 is a schematic front view of the overall structure of an embodiment of the present invention;
fig. 3 is a side view of the overall structure of an embodiment of the present invention.
In the figure: 1-section steel; 2-pile group; 3-a superstructure; 4-stiffening ribs.
Detailed Description
The technical solutions of the present invention will be described in detail below with reference to the accompanying drawings and examples so that those skilled in the art can better understand and implement the technical solutions of the present invention.
The invention provides a conversion system as shown in figures 1-3, which consists of 5 layers of section steel 1, wherein each layer of section steel 1 is orthogonally overlapped, a fifth layer of section steel 1 supports an upper structure 3, and the first layer of section steel 1 is placed on the pile top of a group of piles 2;
as shown in fig. 1, the first layer is formed by arranging 9 section steels 1 from left to right, and the 9 section steels 1 are averagely divided into 3 groups and placed on the pile tops of the grouped piles 2; the second layer is formed by arranging 6 section steels 1 from front to back, the 6 section steels 1 are averagely divided into two groups, and each group of section steels 1 are respectively arranged at two ends of the first layer of section steels 1; the third layer is formed by arranging 6 section steels 1 from left to right, the 6 section steels 1 are averagely divided into two groups, and each group of section steels 1 are respectively arranged at two ends of the section steel 1 of the second layer; the fourth layer is formed by aligning and arranging 11 section steels 1 from front to back and is arranged above the section steel 1 of the third layer; the fifth layer is formed by aligning 5 section steels 1 from left to right and is arranged above the fourth layer.
The first layer of section steel 1 is divided into three groups on average, and each group of section steel 1 is placed on the pile top of the grouped piles 2 respectively, so that each group of section steel 1 of the first layer of section steel 1 is in a stress mode of a continuous beam;
the second-layer section steel 1 is averagely divided into two groups, each group of section steel 1 is placed at two ends of the first-layer section steel 1, the front end, the middle part and the rear end of each group of section steel 1 of the second-layer section steel 1 are correspondingly placed above the three groups of section steel 1 of the first-layer section steel 1, equivalently, three supporting points are respectively provided at the front end, the middle part and the rear end of the second-layer section steel 1, so that each group of section steel 1 of the second-layer section steel 1 forms a stress mode of a continuous beam;
the third-layer section steel 1 is averagely divided into two groups, each group of section steel 1 is placed at two ends of the second-layer section steel 1, two ends of each group of section steel 1 of the third-layer section steel 1 are correspondingly placed above the two groups of section steel 1 of the second-layer section steel 1, equivalently, two ends of each group of section steel 1 of the third-layer section steel 1 are respectively provided with a fulcrum, and each group of section steel 1 of the third-layer section steel 1 forms a stress mode of a simply supported beam;
similarly, two ends of the fourth layer of section steel 1 are correspondingly placed above the two groups of section steel 1 of the third layer of section steel 1, which is equivalent to that two ends of the fourth layer of section steel 1 are respectively provided with a fulcrum, so that the fourth layer of section steel 1 also forms a stress mode of a simply supported beam;
the fifth layer of section steel 1 is arranged above the fourth layer of section steel 1 in an aligned mode and is arranged at a position corresponding to the middle of the fourth layer of section steel 1.
Each layer of section steel 1 in the embodiment is made of national standard I-shaped steel or H-shaped steel, the I-shaped steel or the H-shaped steel is relatively easy to obtain, and the I-shaped steel or the H-shaped steel can be recycled after being disassembled, so that waste is reduced.
Preferably, the side of each section steel 1 is provided with a stiffening rib 4, and the stiffening ribs 4 arranged on the side of the section steel 1 can increase the external rigidity and reduce the instability risk.
The working principle of the invention is as follows: the H-shaped steel or H-shaped steel is formed by stacking I-shaped steel or H-shaped steel layers in an orthogonal mode, the load of an upper structure is distributed to the supporting reaction force of the first layer of section steel 1, the supporting reaction force is also used as the load of the next layer of section steel 1 and is distributed to the supporting reaction force of the layer of section steel 1, and the supporting reaction force between layers is continuously converted and distributed, so that the load is finally and uniformly distributed to the tops of all piles of the pile group 2.
The conversion system can directly bear the upper load of the pile group foundation, is placed on the pile top of the pile group 2, supports the upper structure together with the pile group 2, evenly distributes the load of the upper structure to the pile top of each pile group 2, and meets the requirement of even stress of the pile group 2.
The above-mentioned embodiments are merely preferred embodiments of the present invention, but should not be construed as limiting the invention, and any variations and modifications based on the concept of the present invention should fall within the scope of the present invention, which is defined by the claims.
Claims (10)
1. The utility model provides a group pile foundation pile top evenly receives force conversion system which characterized in that: the conversion system is composed of at least 4 layers of section steel, each layer is provided with at least 3 section steel, the section steel of each layer is orthogonally overlapped, the section steel of the uppermost layer is used for supporting the load of an upper structure, and the section steel of the lowermost layer is arranged on the top of the grouped piles.
2. The evenly stressed transfer system of a pile group foundation pile top of claim 1, wherein: the section steel is I-shaped steel or H-shaped steel.
3. The evenly stressed transfer system of a pile group foundation pile top of claim 2, wherein: at least 3 layers of section steel are arranged in a stress structure of a simple supporting beam or a continuous beam.
4. The evenly stressed transfer system of a pile group foundation pile top of claim 3, wherein: and stiffening ribs are arranged on the side surfaces of the section steel.
5. The evenly stressed transfer system of a pile group foundation pile top of claim 1, wherein: the conversion system consists of 5 layers of section steel;
the conversion system comprises a first layer, a second layer, a third layer, a fourth layer and a fifth layer from bottom to top, wherein the first layer is composed of 9 section steels, the second layer is composed of 6 section steels, the third layer is composed of 6 section steels, the fourth layer is composed of 11 section steels, and the fifth layer is composed of 5 section steels.
6. The evenly stressed transfer system of a pile group foundation pile top of claim 5, wherein: the first layer of section steel of the conversion system is divided into three groups on average, and each group of section steel is placed on the pile top of the grouped piles respectively.
7. The evenly stressed transfer system of a pile group foundation pile top of claim 6, wherein: the second layer of section steel of the conversion system is averagely divided into two groups, each group of section steel is placed at two ends of the first layer of section steel, and the front end, the middle part and the rear end of each group of section steel of the second layer of section steel are correspondingly placed above the three groups of section steel of the first layer of section steel.
8. The evenly stressed transfer system of a pile group foundation pile top of claim 7, wherein: the third-layer section steel of the conversion system is averagely divided into two groups, each group of section steel is placed at two ends of the second-layer section steel, and two ends of each group of section steel of the third-layer section steel are correspondingly placed above the two groups of section steel of the second-layer section steel.
9. The evenly stressed transfer system of a pile group foundation pile top of claim 8, wherein: and two ends of the fourth layer of section steel of the conversion system are correspondingly placed above the two groups of section steel of the third layer of section steel.
10. The evenly stressed transfer system of a pile group foundation pile top of claim 9, wherein: and the fifth layer section steel of the conversion system is placed in the middle of the fourth layer section steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110210967.2A CN113216238A (en) | 2021-02-25 | 2021-02-25 | Pile group foundation pile top uniform stress conversion system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110210967.2A CN113216238A (en) | 2021-02-25 | 2021-02-25 | Pile group foundation pile top uniform stress conversion system |
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| Publication Number | Publication Date |
|---|---|
| CN113216238A true CN113216238A (en) | 2021-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110210967.2A Pending CN113216238A (en) | 2021-02-25 | 2021-02-25 | Pile group foundation pile top uniform stress conversion system |
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| CN (1) | CN113216238A (en) |
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2021
- 2021-02-25 CN CN202110210967.2A patent/CN113216238A/en active Pending
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