CN113338277A - Building structure pile foundation reinforcing apparatus - Google Patents
Building structure pile foundation reinforcing apparatus Download PDFInfo
- Publication number
- CN113338277A CN113338277A CN202110751486.2A CN202110751486A CN113338277A CN 113338277 A CN113338277 A CN 113338277A CN 202110751486 A CN202110751486 A CN 202110751486A CN 113338277 A CN113338277 A CN 113338277A
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- pile foundation
- seat
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- rod
- building structure
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- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 45
- 210000001503 joint Anatomy 0.000 claims description 15
- 238000009434 installation Methods 0.000 claims description 4
- 235000012431 wafers Nutrition 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims description 2
- 230000002787 reinforcement Effects 0.000 abstract description 3
- 238000005204 segregation Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000003032 molecular docking Methods 0.000 description 13
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 230000004075 alteration Effects 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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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
- E02D5/64—Repairing piles
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
- E02D13/04—Guide devices; Guide frames
-
- 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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- 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)
- Foundations (AREA)
Abstract
The invention relates to the technical field of building pile foundation fixing, in particular to a building structure pile foundation reinforcing device which comprises a reinforcing seat sleeved at the bottom of a pile foundation body, wherein the reinforcing seat is formed by butting two butting seats, the butting seats are formed by a semi-ring connecting plate and a semicircular seat which are integrally formed, an inserting hole is formed in the semicircular seat, and a fixing rod buried underground is fixedly installed in the inserting hole. The beneficial effects are that: the pile foundation reinforcing device designed by the invention can utilize the reinforcing seat to completely seal the bottom of the pile foundation, so that the bottom of the pile foundation is not easily corroded by the external environment, the problems of necking, expanding, segregation and the like of the pile foundation are effectively solved, the device can utilize the reinforcing seat and the supporting rod to well fix and support the pile foundation, so that the pile foundation can be effectively prevented from inclining, and reinforcement with different degrees can be selected according to the pile foundation reinforcing requirement, the use is more flexible, the device is simple to install and operate, and the device can be conveniently detached and is convenient to use.
Description
Technical Field
The invention relates to the technical field of building pile foundation fixing, in particular to a building structure pile foundation reinforcing device.
Background
The building pile foundation is a common building supporting structure, and the earthquake resistance of the building adopting the pile foundation can be effectively improved. The pile foundation is because defects such as pile foundation fracture, slope appear easily in natural factor or construction process reason in the use to lead to the pile foundation to lose the function, and consolidate the in service behavior that can effectual improvement pile foundation to the pile foundation. The tradition is consolidated the pile foundation and is mainly adopted the simple connection between reinforcing bar and the reinforcing bar, and this kind of connection structure is unstable to lead to consolidating the effect not ideal, be difficult to use for a long time moreover, pile foundation bottom still exposes externally and lacks good leakproofness simultaneously, phenomenon such as necking down, flaring, segregation appear in unable effectual avoidance pile foundation bottom.
Disclosure of Invention
The invention aims to provide a building structure pile foundation reinforcing device to solve the problem that the existing pile foundation reinforcing device in the background technology is poor in reinforcing effect.
In order to achieve the purpose, the invention provides the following technical scheme: a building structure pile foundation reinforcing device comprises a reinforcing seat sleeved at the bottom of a pile foundation body, wherein the reinforcing seat is formed by butting two butt-joint seats, each butt-joint seat is formed by a semi-ring connecting plate and a semicircular seat which are integrally formed, an insertion hole is formed in each semicircular seat, and a fixing rod buried underground is fixedly installed in each insertion hole;
the side surfaces of the semi-ring connecting plates are integrally formed with connecting lugs, adjacent connecting lugs on different semi-ring connecting plates are clamped through clamping blocks, the side surfaces of the clamping blocks and the connecting lugs are fixed through bolts, and the semi-ring connecting plates are fixedly installed with the pile foundation body through positioning rods;
one side integrated into one piece of semicircle seat has first butt joint ring, and the opposite side integrated into one piece of semicircle seat has the first butt joint post that is convenient for with the installation of first butt joint ring chucking on the adjacent semicircle seat, the support frame that is used for auxiliary stay is installed to the upper end of pile foundation body.
Preferably, the below of dead lever is formed with at least three spacing disk through welding or integrated into one piece linear array, and the top integrated into one piece of dead lever has the cooperation ring, the outside of cooperation ring is cup jointed and is installed the stopper of card in semicircle seat top, and passes through bolt fixed mounting between stopper and the cooperation ring.
Preferably, the semi-ring connecting plate is provided with a rubber pad at the position of fitting with the pile foundation body, and the outer side of the positioning rod is integrally provided with a handle.
Preferably, the clamping block is a U-shaped clamping block, and a through hole convenient for dismounting the clamping block is formed in the clamping block.
Preferably, the upper end and the lower end of the connecting lug are integrally formed with a guide bulge convenient for guiding and installing the clamping block, and the insertion hole is a waist-shaped hole.
Preferably, the bottom integrated into one piece of support frame has the auxiliary support seat, and pegs graft on the auxiliary support seat and install the fixed pile pole that inserts ground, the top of fixed pile pole is fixed through the spacing crossbeam chucking with the auxiliary support seat chucking, and fixes through stop screw between spacing crossbeam and the auxiliary support seat, the top integrated into one piece of support frame has the cooperation backup pad with the pile foundation body laminating, one side integrated into one piece of cooperation backup pad has the second to butt joint the ring, and the opposite side integrated into one piece of cooperation backup pad has can match the second butt joint post of chucking with the second butt joint ring in the adjacent cooperation backup pad.
Preferably, an auxiliary connecting rod is arranged between the adjacent auxiliary supporting seats, and the end part of the auxiliary connecting rod is fixedly installed with the auxiliary supporting seats through a limiting screw rod.
Preferably, the outer side of the semi-ring connecting plate is integrally formed with a connecting seat, and the supporting frame is integrally formed with an auxiliary supporting rod fixed with the connecting seat through a bolt.
Preferably, the upper end of the fixed pile rod is integrally formed with a circular bulge matched with the limiting cross beam, and a vertical U-shaped groove for preventing the fixed pile rod from rotating is formed below the fixed pile rod.
Compared with the prior art, the invention has the beneficial effects that:
1. the pile foundation reinforcing device designed by the invention can utilize the reinforcing seat to completely seal the bottom of the pile foundation, so that the bottom of the pile foundation is not easily corroded by the external environment, and the problems of necking, expanding, segregation and the like of the pile foundation are effectively avoided;
2. the pile foundation reinforcing device designed by the invention can utilize the reinforcing seats and the supporting rods to carry out good fixing and auxiliary supporting on the pile foundation, so that the inclination of the pile foundation can be effectively avoided, and the reinforcing at different degrees can be selected according to the requirements of pile foundation reinforcing, so that the use is more flexible;
3. the pile foundation reinforcing device designed by the invention is simple to install and operate, can be conveniently and quickly disassembled, and is convenient to use, so that the pile foundation reinforcing device has high use value.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the connection between the docking station and the supporting frame according to the present invention;
FIG. 3 is a schematic view of the installation of the docking station and the securing lever of the present invention;
fig. 4 is a schematic view of the installation of the support frame and the fixing pile rod of the present invention.
In the figure: 1. a pile foundation body; 2. a reinforcing seat; 3. a docking station; 301. a semi-ring connecting plate; 302. a semicircular seat; 303. an insertion hole; 4. a connecting seat; 5. a limiting block; 6. matching rings; 7. fixing the rod; 8. limiting the wafer; 9. a first docking ring; 10. connecting lugs; 11. a clamping block; 12. a through hole; 13. positioning a rod; 14. a first docking post; 15. matching with a supporting plate; 16. a second docking ring; 17. a second docking post; 18. a rubber pad; 19. an auxiliary strut; 20. a support frame; 21. an auxiliary link; 22. fixing the pile rod; 23. a limiting cross beam; 24. a limit screw; 25. and (5) an auxiliary supporting seat.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art without creative efforts based on the technical solutions of the present invention belong to the protection scope of the present invention.
Referring to fig. 1 to 4, the present invention provides a technical solution: a building structure pile foundation reinforcing device comprises a reinforcing seat 2 sleeved at the bottom of a pile foundation body 1, wherein the reinforcing seat 2 is formed by butt joint of two butt joint seats 3, the butt joint seats 3 are formed by a semi-ring connecting plate 301 and a semi-circle seat 302 which are integrally formed, the semi-ring connecting plate 301 is used for fixing a pile foundation 1, the semi-circle seat 302 is used for supporting the position of the semi-circle connecting plate 301, an inserting hole 303 is formed in the semi-circle seat 302, the inserting hole 303 is a waist-shaped hole, a fixing rod 7 embedded underground is fixedly installed in the inserting hole 303, at least three limiting wafers 8 are formed below the fixing rod 7 through welding or integrally formed linear arrays, the reinforcing seat 2 can be firmly fixed with the ground through the fixing rod 7 and the limiting wafers 8 positioned on the fixing rod 7, a matching ring 6 is integrally formed above the fixing rod 7, a limiting block 5 clamped above the semi-circle seat 302 is sleeved and installed on the outer side of the matching ring 6, the limiting block 5 and the matching ring 6 are fixedly installed through bolts;
referring to fig. 2 and 3, the half-ring connecting plate 301 has a connecting lug 10 integrally formed on a side surface thereof, adjacent connecting lugs 10 on different semi-ring connecting plates 301 are clamped by clamping blocks 11, the side surfaces of the clamping blocks 11 are fixed with the connecting lugs 10 by bolts, the connecting lugs 10 are mainly fixed by the clamping of the clamping blocks 11 under stress, the bolts tightly play a role in placing the clamping blocks 11 to fall off, therefore, the fixation of the two semi-ring connecting plates 301 is more old, the clamping block 11 is a U-shaped clamping block, and the clamping block 11 is provided with a through hole 12 for conveniently dismounting the clamping block 11, the upper end and the lower end of the connecting lug 10 are both integrally formed with a guide bulge for conveniently guiding and installing the clamping block 11, the semi-ring connecting plate 301 is fixedly installed with the pile foundation body 1 through the positioning rod 13, a rubber pad 18 is installed at the joint position of the semi-ring connecting plate 301 and the pile foundation body 1, and a handle is integrally formed on the outer side of the positioning rod 13;
a first docking ring 9 is integrally formed on one side of the semicircular seat 302, and a first docking post 14 which is convenient to be tightly clamped and mounted with the first docking ring 9 on the adjacent semicircular seat 302 is integrally formed on the other side of the semicircular seat 302.
Referring to fig. 2 and 4, a support frame 20 for auxiliary support is installed at the upper end of the pile foundation body 1, an auxiliary support seat 25 is integrally formed at the bottom of the support frame 20, a fixed pile rod 22 inserted into the ground is installed on the auxiliary support seat 25 in an inserted manner, a limit cross beam 23 clamped with the auxiliary support seat 25 is clamped and fixed above the fixed pile rod 22, the limit cross beam 23 is fixed with the auxiliary support seat 25 through a limit screw 24, a matching support plate 15 attached to the pile foundation body 1 is integrally formed above the support frame 20, a second docking ring 16 is integrally formed at one side of the matching support plate 15, a second docking post 17 capable of being matched and clamped with the second docking ring 16 on the adjacent matching support plate 15 is integrally formed at the other side of the matching support plate 15, a connecting seat 4 is integrally formed at the outer side of the connecting plate half ring 301, and an auxiliary support rod 19 fixed with the connecting seat 4 through a bolt is integrally formed on the support frame 20, fixed pile pole 22's upper end integrated into one piece has with stop beam 23 complex circular arch, and fixed pile pole 22's below is seted up and is prevented self pivoted vertical U-shaped groove, vertical U-shaped groove through with the chucking on ground prevent rotating, vertical U-shaped groove symmetry is seted up a pair ofly on fixed pile pole 22 at least, fixed pile pole 22 is hit through external force and is beaten and insert ground.
The working principle is as follows: the device is when using, at first subaerial pre-buried dead lever 7, then rubber pad 18 is installed in pile foundation body 1's bottom, fix two mutual chucking of butt joint seat 3 in the bottom formation reinforcing seat of pile foundation body 1 again, insert corresponding engaging lug 10 through chucking piece 11 and fix afterwards, insert pile foundation body 1 corresponding position with locating lever 13 and prevent reinforcing seat 2 and rotate afterwards, fix semicircle seat 302 and dead lever 7 through stopper 5 afterwards, can accomplish the basic fixed to pile foundation body 1, because pile foundation body 1 bottom is reinforced seat and rubber pad 18 complete sealing, consequently can effectually avoid 1 bottom of pile foundation body to appear various problems owing to receiving outside erosion. When the pile foundation body 1 needs to be fixed better, an auxiliary supporting device can be installed on the pile foundation body 1, at the moment, at least two matched supporting plates 15 are clamped and combined with each other and are sleeved above the pile foundation body 1, then the auxiliary supporting rod 19 positioned on the supporting frame 20 and the connecting seat 4 are fixed, then the fixed pile rod 22 is inserted into the auxiliary supporting seat 25 and is inserted into a corresponding position on the ground for fixing, then the limiting cross beam 23 is placed to a specified position to limit the upper end of the fixed pile rod 22, then the auxiliary connecting rod 21 is utilized to connect different auxiliary supporting seats 25 together, the auxiliary connecting rod 21 and the limiting cross beam 23 are fixed on the auxiliary supporting seat 25 through the limiting screw rod 24, the complete fixing of the pile foundation body 1 can be completed, and the bending resistance and the tensile resistance of the completely fixed pile foundation body 1 can be effectively improved, the inclination of the support is avoided, and the support function is better. This building structure pile foundation reinforcing apparatus uses convenient operation, can select the reinforcement scheme that does not according to pile foundation body 1's reinforcement demand, uses the flexibility higher, has very high practical value.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a building structure pile foundation reinforcing apparatus which characterized in that: the reinforcing base (2) is sleeved at the bottom of a pile foundation body (1), the reinforcing base (2) is formed by butt joint of two butt joint bases (3), the butt joint bases (3) are formed by a semi-ring connecting plate (301) and a semicircular base (302) which are integrally formed, an inserting hole (303) is formed in the semicircular base (302), and a fixing rod (7) buried underground is fixedly installed in the inserting hole (303);
the side surfaces of the semi-ring connecting plates (301) are integrally formed with connecting lugs (10), adjacent connecting lugs (10) on different semi-ring connecting plates (301) are clamped through clamping blocks (11), the side surfaces of the clamping blocks (11) and the connecting lugs (10) are fixed through bolts, and the semi-ring connecting plates (301) are fixedly installed with the pile foundation body (1) through positioning rods (13);
one side integrated into one piece of semicircle seat (302) has first butt ring (9), and the opposite side integrated into one piece of semicircle seat (302) has first butt post (14) of being convenient for go up first butt ring (9) chucking installation with adjacent semicircle seat (302), support frame (20) that are used for auxiliary stay are installed to the upper end of pile foundation body (1).
2. The building structure pile foundation reinforcing apparatus of claim 1, wherein: the lower part of the fixing rod (7) is provided with at least three limiting wafers (8) through welding or an integrated linear array, the upper part of the fixing rod (7) is provided with a matching ring (6), the outer side of the matching ring (6) is sleeved with a limiting block (5) clamped above the semicircular seat (302), and the limiting block (5) and the matching ring (6) are fixedly installed through bolts.
3. The building structure pile foundation reinforcing apparatus of claim 1, wherein: the semi-ring connecting plate (301) is provided with a rubber pad (18) at the joint position of the pile foundation body (1), and a handle is integrally formed on the outer side of the positioning rod (13).
4. The building structure pile foundation reinforcing apparatus of claim 1, wherein: the clamping block (11) is a U-shaped clamping block, and a through hole (12) convenient for dismounting the clamping block (11) is formed in the clamping block (11).
5. The building structure pile foundation reinforcing apparatus of claim 1, wherein: the upper end and the lower end of the connecting lug (10) are integrally formed with guide bulges which are convenient for guiding and installing the clamping block (11), and the inserting hole (303) is a waist-shaped hole.
6. The building structure pile foundation reinforcing apparatus of claim 1, wherein: the bottom integrated into one piece of stake support frame (20) has auxiliary support seat (25), and pegs graft on auxiliary support seat (25) and install fixed pile pole (22) that insert ground, the top of fixed pile pole (22) is fixed through spacing beam (23) chucking with auxiliary support seat (25) chucking, and fixes through stop screw (24) between spacing beam (23) and auxiliary support seat (25), the top integrated into one piece of support frame (20) has cooperation backup pad (15) with pile foundation body (1) laminating, one side integrated into one piece of cooperation backup pad (15) has the second to butt joint ring (16), and the opposite side integrated into one piece of cooperation backup pad (15) have can with adjacent cooperation backup pad (15) on the second butt joint ring (16) match the second of chucking to connect post (17).
7. The building structure pile foundation reinforcing apparatus of claim 6, wherein: an auxiliary connecting rod (21) is arranged between the adjacent auxiliary supporting seats (25), and the end part of the auxiliary connecting rod (21) is fixedly installed with the auxiliary supporting seats (25) through a limiting screw rod (24).
8. The building structure pile foundation reinforcing apparatus of claim 6, wherein: the outer side of the semi-ring connecting plate (301) is integrally formed with a connecting seat (4), and an auxiliary support rod (19) fixed with the connecting seat (4) through a bolt is integrally formed on the support frame (20).
9. The building structure pile foundation reinforcing apparatus of claim 6, wherein: the upper end of the fixed pile rod (22) is integrally formed with a circular bulge matched with the limiting cross beam (23), and a vertical U-shaped groove for preventing the fixed pile rod from rotating is formed below the fixed pile rod (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110751486.2A CN113338277A (en) | 2021-07-02 | 2021-07-02 | Building structure pile foundation reinforcing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110751486.2A CN113338277A (en) | 2021-07-02 | 2021-07-02 | Building structure pile foundation reinforcing apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN113338277A true CN113338277A (en) | 2021-09-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110751486.2A Pending CN113338277A (en) | 2021-07-02 | 2021-07-02 | Building structure pile foundation reinforcing apparatus |
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| Country | Link |
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| CN (1) | CN113338277A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114086549A (en) * | 2021-11-10 | 2022-02-25 | 中国建筑第四工程局有限公司 | Pile foundation punching and drilling reinforcing device based on relatively broken rock mass |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5829920A (en) * | 1997-04-14 | 1998-11-03 | Christenson; John | Method of testing wrapped submerged piling for infestation |
| CN210917440U (en) * | 2019-11-05 | 2020-07-03 | 淮安市建筑设计研究院有限公司 | Pile foundation reinforcing apparatus for building site |
| CN211646509U (en) * | 2020-01-17 | 2020-10-09 | 广东君兆建设集团有限公司 | Shock resistance ancient building foundation reinforced structure |
| CN212052843U (en) * | 2020-04-13 | 2020-12-01 | 广东广强基础工程有限公司 | Pile foundation structure suitable for soft soil layer |
| CN112814021A (en) * | 2021-03-08 | 2021-05-18 | 中国华能集团清洁能源技术研究院有限公司 | Post-installation reinforcing device and method for offshore single-pile foundation |
-
2021
- 2021-07-02 CN CN202110751486.2A patent/CN113338277A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5829920A (en) * | 1997-04-14 | 1998-11-03 | Christenson; John | Method of testing wrapped submerged piling for infestation |
| CN210917440U (en) * | 2019-11-05 | 2020-07-03 | 淮安市建筑设计研究院有限公司 | Pile foundation reinforcing apparatus for building site |
| CN211646509U (en) * | 2020-01-17 | 2020-10-09 | 广东君兆建设集团有限公司 | Shock resistance ancient building foundation reinforced structure |
| CN212052843U (en) * | 2020-04-13 | 2020-12-01 | 广东广强基础工程有限公司 | Pile foundation structure suitable for soft soil layer |
| CN112814021A (en) * | 2021-03-08 | 2021-05-18 | 中国华能集团清洁能源技术研究院有限公司 | Post-installation reinforcing device and method for offshore single-pile foundation |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114086549A (en) * | 2021-11-10 | 2022-02-25 | 中国建筑第四工程局有限公司 | Pile foundation punching and drilling reinforcing device based on relatively broken rock mass |
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Application publication date: 20210903 |