CN113235635A - Scour prevention pile foundation structure under water - Google Patents
Scour prevention pile foundation structure under water Download PDFInfo
- Publication number
- CN113235635A CN113235635A CN202110425724.0A CN202110425724A CN113235635A CN 113235635 A CN113235635 A CN 113235635A CN 202110425724 A CN202110425724 A CN 202110425724A CN 113235635 A CN113235635 A CN 113235635A
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- pile foundation
- cylinder body
- steel wire
- splicing
- foundation structure
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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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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/06—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against corrosion by soil or water
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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
- E02D5/60—Piles with protecting cases
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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)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention relates to an erosion-resistant underwater pile foundation structure, and belongs to the technical field of bridge engineering. The protection sleeve of the scour prevention underwater pile foundation structure is formed by splicing and combining a plurality of spliced cylinder bodies to form a cylinder body structure; filling the protective sleeve with a cast concrete pile; the outer edge of the splicing cylinder body is provided with a positioning groove for mounting a positioning block, the end face of the positioning block is provided with a high-strength steel wire bundle, and the high-strength steel wire bundle extends into a poured concrete pile; the positioning groove is internally provided with a positioning groove bottom hole for the high-strength steel wire bundle to pass through. The anti-scouring underwater pile foundation structure provided by the invention is different from the protection idea of reinforcing after the existing discovery, and the protection sleeve is spliced and combined on the upper end surface of the pile foundation in the concrete pile foundation pouring process, so that the possibility of abrasion damage of the underwater pile foundation is fundamentally avoided, and the pile foundation which is expected to be in the range below a river bed can be reinforced, thereby preventing the problem that the pile body is exposed and scoured and abraded due to the change of the position of the river bed.
Description
Technical Field
The invention relates to an erosion-resistant underwater pile foundation structure, and belongs to the technical field of bridge engineering.
Background
At present, in the aspect of a foundation structure of a bridge, a pile foundation is widely applied to bridge construction with unique advantages, and the technology and the process are mature. However, for underwater pile foundations, due to the long-term combined action of water flow and impurities in water, the part of the pile foundation exposed out of the river bed is subject to abrasion and even concrete protection layer damage, and further corrosion of the steel bars is caused, and finally the whole bearing capacity and durability of the pile foundation structure are reduced. Most of the existing solutions focus on reinforcement means after disease discovery: the concrete is filled with special concrete, and the concrete is wrapped by anti-scouring composite materials or reinforced by an external pile casing, but the methods have a plurality of problems:
(1) the problem of underwater scouring damage mainly occurs near the position of an underwater riverbed, the existing detection means is difficult to find, and the underwater scouring damage has strong concealment and harmfulness, and only part of all structures with diseases can be reinforced in time;
(2) the existing underwater pile foundation reinforcing method has the defects of high technical difficulty, complex process and difficult achievement of expected reinforcing effect;
(3) the existing method mainly aims at the pile foundations exposed outside a river bed, the most serious river bed position is difficult to effectively protect and scour, and generally, the position of the river bed can sink continuously along with the scouring and other actions of water flow, so that the pile foundations which are originally positioned in a soil layer and are not reinforced are exposed and continuously abraded, and the previous reinforcement becomes useless work.
Disclosure of Invention
The invention provides an anti-scouring underwater pile foundation structure.
The invention adopts the following technical scheme:
the invention relates to an erosion-resistant underwater pile foundation structure which comprises a protective sleeve, a positioning block and a high-strength steel wire bundle; the protective sleeve is formed by splicing and combining a plurality of spliced cylinder bodies to form a cylinder body structure; filling the protective sleeve with a cast concrete pile; the outer edge of the splicing cylinder body is provided with a positioning groove for mounting a positioning block, the end face of the positioning block is provided with a high-strength steel wire bundle, and the high-strength steel wire bundle extends into a poured concrete pile; the positioning groove is internally provided with a positioning groove bottom hole for the high-strength steel wire bundle to pass through.
According to the erosion-resistant underwater pile foundation structure, the splicing cylinder bodies are composed of two splicing cylinder bodies; the vertical edge of the splicing cylinder body is provided with a first connecting guide rail, a plurality of splicing cylinder bodies are spliced with one another through the first connecting guide rail, and watertight sealing strips are arranged in the first connecting guide rails; the upper edge and the lower edge of the splicing cylinder body are respectively provided with a second connecting guide rail, and a watertight sealing strip is arranged in each connecting guide rail.
According to the erosion-resistant underwater pile foundation structure, the number of the positioning grooves is multiple, and the positioning grooves are arranged along the circumferential direction of the splicing barrel; the positioning grooves are arranged along the axial direction of the splicing cylinder body;
a plurality of positioning grooves are arranged along the circumferential direction of the splicing cylinder body and are respectively positioned at the upper edge, the lower edge and the middle part of the splicing cylinder body;
the positioning grooves are arranged along the circumferential direction of the splicing cylinder body and are respectively positioned at two vertical edges of the splicing cylinder body.
According to the erosion-resistant underwater pile foundation structure, the extending end of the high-strength steel wire bundle is a scattered steel wire.
According to the erosion-resistant underwater pile foundation structure, the rubber anti-slip strips are respectively arranged at the upper part and the lower part of the positioning grooves which are circumferentially arranged in the middle of the splicing cylinder body.
According to the erosion-resistant underwater pile foundation structure, the contact surface of the splicing cylinder body and the concrete pile is provided with the wavy lines.
Advantageous effects
The anti-scouring underwater pile foundation structure provided by the invention is different from the protection idea of reinforcing after the existing discovery, and the protection sleeve is spliced and combined on the upper end surface of the pile foundation in the concrete pile foundation pouring process, so that the possibility of abrasion damage of the underwater pile foundation is fundamentally avoided, and the pile foundation which is expected to be in the range below a river bed can be reinforced, thereby preventing the problem that the pile body is exposed and scoured and abraded due to the change of the position of the river bed.
According to the scour prevention underwater pile foundation structure, the wave-shaped lines on the inner surface are combined, the tight combination between the protection structure and the pile foundation body can be ensured, and the durability and the stability of the whole structure are enhanced; the protective sleeve is further firmly fixed on the pile foundation through the positioning groove, the positioning block, the high-strength steel wire bundle extending into the concrete structure and the structure with the dispersed tail end steel wires; the guide rails protecting the sleeve edges can be used to connect other sleeves, thereby achieving modularity of construction.
The scour prevention underwater pile foundation structure provided by the invention can freely select the length of the reinforcement section according to the requirement, and is convenient to install in practical application; and the rubber anti-slip strip outside the protective sleeve is used for fixing the sleeve in position in the installation and pile body pouring processes to prevent sliding.
Drawings
FIG. 1 is a schematic top view of the structure of the present invention;
FIG. 2 is a side view of the inside and outside of the protective sleeve of the present invention;
FIG. 3 is an enlarged view of the positioning block of the shield sleeve of the present invention;
FIG. 4 is a three-dimensional structure of the invention after casting.
In the figure: 1. a protective sleeve; 2. a positioning groove; 3. positioning blocks; 4. high-strength steel wire bundles; 5, the tail end of the steel wire bundle is in a scattered shape; 6. connecting the first guide rail; 7. connecting a second guide rail; 8. positioning a groove bottom hole; 9. rubber antislip strips; 10. wave-shaped lines; 11. concrete pile foundation.
Detailed Description
In order to make the purpose and technical solution of the embodiments of the present invention clearer, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few 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 described embodiments of the invention without any inventive step, are within the scope of protection of the invention.
As shown in fig. 1-4, the erosion-resistant underwater pile foundation structure comprises a combined protective sleeve 1 which is a semi-cylindrical splicing cylinder body, and the outer diameter of the splicing cylinder body is equal to the outer diameter of the pile foundation. The protective sleeve 1 is provided with a plurality of positioning grooves 2, the bottom of each positioning groove 2 is provided with a small hole 8, a positioning block 3 is arranged in each positioning groove 2 and has the same shape, the inner side of each positioning block 3 is connected with a high-strength steel wire bundle 4, the high-strength steel wire bundles 4 penetrate through the small holes 8 at the bottom of the positioning grooves and penetrate into the concrete pile foundation 11, the high-strength steel wire bundles are closely connected together after the pile foundation is poured to form strength, and the tail ends of the high-strength steel wire bundles 4 are provided with scattered steel wires 5. The vertical edge of the protective sleeve 1 is provided with a first connecting guide rail 6 and a watertight sealing strip, and the upper edge and the lower edge of the protective sleeve are provided with a second annular connecting guide rail 7 and a watertight sealing strip, so that free assembly between sleeves is realized.
The inner surface of the protective sleeve 1 is provided with wavy grains 10 to enhance the relation between the sleeve and a pile foundation, the outer surface of the protective sleeve 1 is provided with a rubber anti-slip strip 9, the sleeve position is fixed in the installation and pile body pouring process, and sliding is prevented.
The basic flow of the installation and construction of the invention is as follows:
before concrete pile foundation 11 pours, put into protective sleeve 1 constant head tank internal fixation with the locating piece, high strength steel wire bundle 4 passes positioning groove bottom hole 8, stretches into sleeve inner space to with the terminal form terminal 5 that scatters of steel wire bundle formation. And then the protection sleeve is assembled by utilizing the connecting guide rail according to the expected length of the required protection segment, and the watertight sealing strip arranged along the guide rail can prevent water from entering the inside of the seam of the protection sleeve in the use process, so that the durability of the protection structure is enhanced.
The assembled sleeve is integrally placed into a pile foundation pouring mold or a pile top section of the drilled pile hole, and the position between the sleeve and the pile foundation pouring mold or the pile top section of the drilled pile hole is limited by a rubber anti-slip strip 9, so that the pouring process is not influenced; the pile foundation concrete is poured, the high-strength steel wire bundles and the tail end divergent steel wires are poured in the concrete, the high-strength steel wire bundles and the tail end divergent steel wires are closely connected together after the concrete forms strength, and the protection sleeve is fixed on the outer surface of the pile foundation by combining the wavy lines on the inner side of the protection sleeve to form a part of the whole pile foundation with firm structure.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. The utility model provides an scour prevention pile foundation structure under water which characterized in that: comprises a protective sleeve, a positioning block and a high-strength steel wire bundle; the protective sleeve is formed by splicing and combining a plurality of spliced cylinder bodies to form a cylinder body structure; filling the protective sleeve with a cast concrete pile; the outer edge of the splicing cylinder body is provided with a positioning groove for mounting a positioning block, the end face of the positioning block is provided with a high-strength steel wire bundle, and the high-strength steel wire bundle extends into a poured concrete pile; the positioning groove is internally provided with a positioning groove bottom hole for the high-strength steel wire bundle to pass through.
2. An erosion-resistant underwater pile foundation structure according to claim 1, wherein: the splicing cylinders consist of two splicing cylinders; the vertical edge of the splicing cylinder body is provided with a first connecting guide rail, a plurality of splicing cylinder bodies are spliced with one another through the first connecting guide rail, and watertight sealing strips are arranged in the first connecting guide rails; the upper edge and the lower edge of the splicing cylinder body are respectively provided with a second connecting guide rail, and a watertight sealing strip is arranged in each connecting guide rail.
3. An erosion prevention underwater pile foundation structure according to claim 1 or 2, characterized in that: the number of the positioning grooves is a plurality, and the positioning grooves are arranged along the circumferential direction of the splicing cylinder body; the positioning grooves are arranged along the axial direction of the splicing cylinder body;
a plurality of positioning grooves are arranged along the circumferential direction of the splicing cylinder body and are respectively positioned at the upper edge, the lower edge and the middle part of the splicing cylinder body;
the positioning grooves are arranged along the circumferential direction of the splicing cylinder body and are respectively positioned at two vertical edges of the splicing cylinder body.
4. An erosion-resistant underwater pile foundation structure according to claim 1, wherein: the extending end of the high-strength steel wire bundle is a dispersed steel wire.
5. An erosion prevention underwater pile foundation structure according to claim 3, wherein: the middle part of the splicing cylinder body is circumferentially provided with a plurality of positioning grooves, and the upper part and the lower part of each positioning groove are respectively provided with a rubber anti-slip strip.
6. An erosion prevention underwater pile foundation structure according to claim 3, wherein: the splicing cylinder body is provided with wavy lines on the contact surface with the concrete pile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110425724.0A CN113235635A (en) | 2021-04-20 | 2021-04-20 | Scour prevention pile foundation structure under water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110425724.0A CN113235635A (en) | 2021-04-20 | 2021-04-20 | Scour prevention pile foundation structure under water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113235635A true CN113235635A (en) | 2021-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110425724.0A Pending CN113235635A (en) | 2021-04-20 | 2021-04-20 | Scour prevention pile foundation structure under water |
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| CN (1) | CN113235635A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114232669A (en) * | 2022-01-06 | 2022-03-25 | 徐霞 | Supporting pile foundation for building |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105464387A (en) * | 2015-12-25 | 2016-04-06 | 中铁十四局集团有限公司 | Precast beam steel strand hanging ring |
| CN106049556A (en) * | 2016-08-10 | 2016-10-26 | 上海市城市建设设计研究总院 | Erosive wear preventing structure for pile foundation |
| CN210002394U (en) * | 2019-04-01 | 2020-01-31 | 河南省交通规划设计研究院股份有限公司 | Be used for reinforced (rfd) outer protecting cylinder of pile foundation |
| CN111395411A (en) * | 2020-04-02 | 2020-07-10 | 中国建筑第六工程局有限公司 | Be used for interim engineering pile foundation scour prevention device on water |
| CN212896448U (en) * | 2020-04-14 | 2021-04-06 | 中国电建集团贵阳勘测设计研究院有限公司 | Scour prevention is bridge pile foundation structure under water |
-
2021
- 2021-04-20 CN CN202110425724.0A patent/CN113235635A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105464387A (en) * | 2015-12-25 | 2016-04-06 | 中铁十四局集团有限公司 | Precast beam steel strand hanging ring |
| CN106049556A (en) * | 2016-08-10 | 2016-10-26 | 上海市城市建设设计研究总院 | Erosive wear preventing structure for pile foundation |
| CN210002394U (en) * | 2019-04-01 | 2020-01-31 | 河南省交通规划设计研究院股份有限公司 | Be used for reinforced (rfd) outer protecting cylinder of pile foundation |
| CN111395411A (en) * | 2020-04-02 | 2020-07-10 | 中国建筑第六工程局有限公司 | Be used for interim engineering pile foundation scour prevention device on water |
| CN212896448U (en) * | 2020-04-14 | 2021-04-06 | 中国电建集团贵阳勘测设计研究院有限公司 | Scour prevention is bridge pile foundation structure under water |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114232669A (en) * | 2022-01-06 | 2022-03-25 | 徐霞 | Supporting pile foundation for building |
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Application publication date: 20210810 |
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| RJ01 | Rejection of invention patent application after publication |