CN214033778U - Novel pile foundation jacket foundation grouting connecting section structure - Google Patents
Novel pile foundation jacket foundation grouting connecting section structure Download PDFInfo
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- CN214033778U CN214033778U CN202022754620.8U CN202022754620U CN214033778U CN 214033778 U CN214033778 U CN 214033778U CN 202022754620 U CN202022754620 U CN 202022754620U CN 214033778 U CN214033778 U CN 214033778U
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Abstract
The utility model provides a pile foundation jacket basis grout linkage segment structure, includes the steel-pipe pile, be provided with the top confined mud barrel that stores up in the steel-pipe pile, the bottom of storing up the mud barrel is provided with the epitaxial plate, the end and the steel-pipe pile inner wall of epitaxial plate link to each other, it constitutes annular grout district with the steel-pipe pile inner wall to store up mud barrel, epitaxial plate, annular grout district interpolation and is equipped with main pipe insertion section, the grout material has been filled between main pipe insertion section and the steel-pipe pile. The utility model discloses a lead to outside the stake with the interior earth part of stake, the part is stored in the stake, and make in the grout linkage segment do not have earth and with the inside isolated of steel-pipe pile, satisfy under the prerequisite of grout linkage segment structure requirement and pile foundation jacket structure safety, effectively solve the unable problem that sets up below the mud face of grout insertion section, and then avoid inhaling mud, the many overlengths of steel-pipe pile cantilever, the unable leakproofness of guaranteeing of grout linkage segment lower extreme, a series of problems such as steel pipe waste, improve foundation structure security, construction convenience and configuration optimization design.
Description
Technical Field
The utility model relates to an ocean engineering foundation structure arranges the field, concretely relates to pile foundation jacket basis grout linkage segment structure.
Background
At present, the construction of offshore wind power plants in China is gradually promoted to the deep open sea, and a jacket foundation has remarkable advantages in a deep water environment and has a large-scale application trend in the field of offshore wind power in China. The jacket foundation is divided into a pile foundation and a jacket, the jacket is inserted into the pile foundation through the main pipe insertion section, and grouting materials are filled in an annular space between the insertion section and the pile foundation. The main duct insertion section, the grouting material and the grouting connecting section formed by the steel pipe pile are key structures of force transmission of the guide pipe frame and the pile foundation, according to the characteristics of grouting material products, the surface of the inner wall of the steel pipe pile and the surface of the outer wall of the insertion section need to be kept clean, and the bonding force of the grouting material can be effectively exerted, so that the grouting connecting section is usually arranged above a mud surface.
At the present stage, in order to ensure the structure safety, the bearing length of the grouting insertion section of the deepwater jacket foundation is longer, the soil plug effect in the steel pipe pile driving process is considered, the soil in the pile is higher than the soil outside the pile after the pile driving is finished, and the steel pipe pile needs to be exposed out of the soil surface for a longer distance in order to ensure that the grouting connection section avoids the soil in the pile. The structural scheme can lead the cantilever section of the steel pipe pile to be longer, thereby providing high requirements for the bearing capacity of the grouting connecting section. Secondly, this section is located more than the mud face, and the steel-pipe pile can't play bearing effect with ground contact, sees from the pile foundation bearing mode that this section sets up more than the mud face and has caused the waste to the steel-pipe pile. Meanwhile, the existing structure needs to arrange a sealing ring below the grouting section as a sealing and grout stopping device, and the sealing ring is expensive and cannot completely ensure the sealing property. If the grout can not be effectively sealed and stopped, great waste can be caused to grouting, and the construction period is prolonged. In addition, if the actual soil plug height in the pile is greater than the reserved soil plug height when in design, the soil suction treatment is needed to be carried out so as to ensure that no soil exists in the grouting connecting section range, the soil suction construction difficulty in the pile in the deepwater sea area is large, the efficiency is low, the soil suction effect is limited, the cleanness of the inner wall of the pile can not be effectively guaranteed to meet the design requirement, the bonding force of grouting materials is greatly reduced, and great hidden danger is brought to the safe operation of the pile foundation guide pipe frame foundation.
Disclosure of Invention
An object of the utility model is to provide a pile foundation jacket basis grout linkage segment structure, this structure can be under the prerequisite of guaranteeing safety the unable problem that sets up below the mud face of thick liquid insertion section.
The technical scheme of the utility model lies in: the utility model provides a pile foundation jacket basis grout linkage segment structure, includes the steel-pipe pile, be provided with the top confined mud barrel that stores up in the steel-pipe pile, the bottom of storing up the mud barrel is provided with the epitaxial plate, the end and the steel-pipe pile inner wall of epitaxial plate link to each other, it constitutes annular grout district with the steel-pipe pile inner wall to store up mud barrel, epitaxial plate, annular grout district interpolation and is equipped with main pipe insertion section, the grout material has been filled between main pipe insertion section and the steel-pipe pile.
Furthermore, the extending plate is in a horn shape with a small upper part and a large lower part, the tail end of the extending plate is connected with the inner wall of the steel pipe pile in a sealing welding mode, the extending plate and the mud storage cylinder divide the steel pipe pile into an upper part and a lower part which are not communicated with each other, the upper part of the extending plate is a connecting section, and the lower part of the extending plate is a mud storage section.
Further, store up mud section top and evenly be provided with a plurality of mud discharge through-holes along the circumferencial direction, the periphery in mud discharge hole is provided with the reinforcing plate.
Furthermore, the top of the main duct inserting section is provided with a plurality of upper guide keys at equal intervals along the circumferential direction, the bottom of the main duct inserting section is provided with a plurality of lower guide keys at equal intervals along the circumferential direction, and the height of each guide key is not less than the minimum grouting thickness.
Furthermore, chamfers are arranged at the bottoms of the upper guide key and the lower guide key.
Furthermore, a plurality of steel pipe pile shear rings are arranged on the inner wall of the connecting section at equal intervals along the axis direction of the steel pipe pile, and a plurality of inserting section shear rings are arranged on the main guide pipe inserting section at equal intervals between the upper guide key and the lower guide key.
Furthermore, the grouting material comprises a bottom sealing grouting material and a bearing grouting material.
Furthermore, the main duct insertion section is a steel round tube, the outer diameter of the round tube is smaller than the inner diameter of the steel pipe pile, the inner diameter of the round tube is larger than the outer diameter of the sludge storage barrel, the upper end of the main duct insertion section is connected with the main duct of the jacket, and the lower end of the main duct insertion section is in contact with the top surface of the epitaxial plate after insertion.
Compared with the prior art, the utility model has the advantages of it is following: the utility model discloses a lead to outside the stake with the interior earth part of stake, the part is stored in the stake, and make in the grout linkage segment do not have earth and with the inside isolated of steel-pipe pile, satisfy under the prerequisite of grout linkage segment structure requirement and pile foundation jacket structure safety, effectively solve the unable problem that sets up below the mud face of grout insertion section, and then avoid inhaling mud, the many overlengths of steel-pipe pile cantilever, the unable leakproofness of guaranteeing of grout linkage segment lower extreme, a series of problems such as steel pipe waste, improve foundation structure security, construction convenience and configuration optimization design.
Drawings
Fig. 1 is a schematic structural view of the present invention;
in the figure: 1-soil, 2-sludge storage barrel, 3-epitaxial plate, 4-main conduit insertion section, 5-connecting section, 6-sludge storage section, 7-sludge discharge through hole, 8-reinforcing plate, 9-upper guide key, 10-lower guide key, 11-steel pipe pile shear ring, 12-insertion section shear ring, 13-bottom sealing grouting material and 14-bearing grouting material.
Detailed Description
In order to make the aforementioned features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below, but the present invention is not limited thereto.
Refer to fig. 1.
The utility model provides a pile foundation jacket basis grout linkage segment structure, includes the steel-pipe pile, be provided with the top confined mud barrel that stores up in the steel-pipe pile, the bottom of storing up the mud barrel is provided with the epitaxial plate, the epitaxial plate with store up mud barrel integrated into one piece, the end of epitaxial plate links to each other with the steel-pipe pile inner wall, store up mud barrel, epitaxial plate and steel-pipe pile inner wall and constitute annular grout district, annular grout district interpolation is equipped with main pipe insertion section, the top of main pipe insertion section links to each other with the jacket main pipe, it has the grout material to fill between main pipe insertion section and the steel-pipe pile.
In this embodiment, the epitaxial plate is the loudspeaker form that big end down, and the connected mode of its end and steel-pipe pile inner wall is seal weld, avoids earth among the steel-pipe pile to invade annular grout district, the epitaxial plate is divided into upper and lower two parts that do not communicate with each other with storing up a mud section of thick bamboo with the steel-pipe pile, and its upper portion is the linkage segment, and its lower part is for storing up a mud section.
In this embodiment, store up mud section top and evenly be provided with a plurality of mud discharging through-holes along the circumferencial direction, when laying the steel-pipe pile, avoid the soil plug effect to lead to can't deepening, the soil that reachs and store up mud section top is discharged from the mud discharging through-hole, the periphery in mud discharging hole is provided with the reinforcing plate to avoid the mud discharging through-hole to destroy under great soil pressure.
In this embodiment, the top of main pipe insertion section is provided with a plurality of upper guide keys along the circumferencial direction equidistance to main pipe insertion section inserts the steel-pipe pile, the bottom of main pipe insertion section is provided with a plurality of lower guide keys along the circumferencial direction equidistance, so that main pipe insertion section inserts the steel-pipe pile, the height of guide key is not less than minimum grout thickness, satisfies the user demand with minimum grout thickness in guaranteeing the work progress.
In this embodiment, the bottoms of the upper guide key and the lower guide key are both provided with chamfers, so that the main guide pipe insertion section can be conveniently inserted into the steel pipe pile.
In this embodiment, for the area of contact of increase steel-pipe pile and main conduit insertion section and grout material, the inner wall of linkage segment is provided with a plurality of steel-pipe pile shear rings along steel-pipe pile axis direction equidistance, main conduit insertion section is provided with a plurality of insertion section shear rings at the equidistance between last guide key and the lower guide key, and steel-pipe pile shear ring and the crisscross setting of insertion section shear ring avoid influencing the grout material and flow.
In this embodiment, the grout material includes back cover grout material and bears the weight of grout material, back cover grout material is located the juncture of main pipe insertion section and epitaxial plate top surface, guarantees that grout material can not flow backward main pipe insertion section, bear grout material and be used for bearing the power between main pipe insertion section and the steel-pipe pile.
In this embodiment, main duct insertion section is the steel pipe, and the pipe external diameter is less than the steel-pipe pile internal diameter, and the pipe internal diameter is greater than a storage mud section of thick bamboo external diameter, and the upper end of main duct insertion section links to each other with jacket main duct, and the lower extreme contacts with the epitaxial board top surface after inserting the completion.
The above is only the preferred embodiment of the present invention, and all the equivalent changes and modifications made according to the claims of the present invention should be covered by the present invention.
Claims (8)
1. The utility model provides a pile foundation jacket basis grout linkage segment structure, includes the steel-pipe pile, its characterized in that, be provided with the top confined mud barrel that stores up in the steel-pipe pile, the bottom of storing up the mud barrel is provided with the epitaxial plate, the end and the steel-pipe pile inner wall of epitaxial plate link to each other, it constitutes annular grout district to store up mud barrel, epitaxial plate and steel-pipe pile inner wall, the interpolation is equipped with main pipe insertion section in the annular grout district, it has the grout material to fill between main pipe insertion section and the steel-pipe pile.
2. The grouting connection section structure for a pile foundation jacket foundation according to claim 1, wherein the extension plate is in a horn shape with a small top and a large bottom, the tail end of the extension plate is connected with the inner wall of the steel pipe pile in a sealing welding mode, the extension plate and the sludge storage cylinder divide the steel pipe pile into an upper part and a lower part which are not communicated with each other, the upper part is a connection section, and the lower part is a sludge storage section.
3. The grouting connection section structure for the foundation of a pile foundation jacket according to claim 2, wherein a plurality of mud discharging through holes are uniformly formed in the top of the mud storage section in the circumferential direction, and reinforcing plates are arranged on the peripheries of the mud discharging holes.
4. The grouting connection section structure of a pile foundation jacket foundation according to claim 2, wherein a plurality of upper guide keys are equidistantly arranged on the top of the main conduit insertion section along the circumferential direction, a plurality of lower guide keys are equidistantly arranged on the bottom of the main conduit insertion section along the circumferential direction, and the height of each guide key is not less than the minimum grouting thickness.
5. A pile foundation jacket foundation grouting connection section structure as claimed in claim 4, wherein the bottoms of the upper guide key and the lower guide key are provided with chamfers.
6. The grouting connection section structure of a pile foundation jacket foundation according to claim 4, characterized in that a plurality of steel pipe pile shear rings are equidistantly arranged on the inner wall of the connection section along the axis direction of the steel pipe pile, and a plurality of insertion section shear rings are equidistantly arranged on the main pipe insertion section between the upper guide key and the lower guide key.
7. The grouting connection section structure of a pile foundation and jacket foundation according to claim 1, wherein the main conduit insertion section is a steel round pipe, the outer diameter of the round pipe is smaller than the inner diameter of the steel pipe pile, the inner diameter of the round pipe is larger than the outer diameter of the sludge storage barrel, the upper end of the main conduit insertion section is connected with the main conduit of the jacket, and the lower end of the main conduit insertion section is in contact with the top surface of the extension plate after insertion.
8. The pile foundation jacket foundation grout joint section structure of claim 1, wherein the grout comprises back cover grout and load bearing grout.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022754620.8U CN214033778U (en) | 2020-11-25 | 2020-11-25 | Novel pile foundation jacket foundation grouting connecting section structure |
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| CN202022754620.8U CN214033778U (en) | 2020-11-25 | 2020-11-25 | Novel pile foundation jacket foundation grouting connecting section structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112252359A (en) * | 2020-11-25 | 2021-01-22 | 福建省水利水电勘测设计研究院 | Novel pile foundation jacket foundation grouting connecting section structure and construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112252359A (en) * | 2020-11-25 | 2021-01-22 | 福建省水利水电勘测设计研究院 | Novel pile foundation jacket foundation grouting connecting section structure and construction method |
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Address after: No.158, Dongda Road, Fuzhou, Fujian 350000 Patentee after: Fujian Water Resources and Hydropower Survey, design and Research Institute Co.,Ltd. Address before: No. 158, Dongda Road, Gulou District, Fuzhou City, 350000, Fujian Province Patentee before: FUJIAN PROVINCIAL INVESTIGATION DESIGN & Research Institute OF WATER CONSERVANCY AND HYDROPOWER |