CN211690479U - Pile top displacement recovery device - Google Patents
Pile top displacement recovery device Download PDFInfo
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- CN211690479U CN211690479U CN201922304334.9U CN201922304334U CN211690479U CN 211690479 U CN211690479 U CN 211690479U CN 201922304334 U CN201922304334 U CN 201922304334U CN 211690479 U CN211690479 U CN 211690479U
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- steel plate
- hydraulic jack
- displacement
- pile
- telescopic steel
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Abstract
The utility model relates to a pile top displacement recovery device, which comprises a pre-buried steel plate fixed at the top end of a cast-in-place pile and a hydraulic jack fixed on the pre-buried steel plate; a telescopic steel plate cap is fixed on the embedded steel plate and positioned at the outer side of the hydraulic jack; the top side of the telescopic steel plate cap is used for bearing the upper structure; a pressure sensor and a displacement sensor are arranged in the telescopic steel plate cap; the hydraulic jack is used for jacking the telescopic steel plate cap to enable the upper structure to recover and maintain to an initial position when the numerical values detected by the pressure sensor and the displacement sensor exceed a settlement allowable value; the side wall of the telescopic steel plate cap is also provided with a first reserved hole for pouring concrete high-strength mortar into the closed inner cavity to form a new cast-in-place pile bearing upper structure. The utility model discloses a pile bolck displacement resetting means can recover the inhomogeneous settlement that takes place among the pile foundation engineering or the too big phenomenon of settlement volume, guarantees overall structure's security, simple structure, easily construction.
Description
Technical Field
The utility model relates to a pile foundation engineering equipment field especially relates to a pile bolck displacement recovery unit.
Background
The pile foundation is a foundation form with high bearing capacity, wide application range and long history. In civil engineering construction and use, foundation settlement inevitably occurs, but the uneven settlement amount is directly related to the safety of use of the building. Or the foundation is uniformly settled with overlarge settlement, although the influence on the upper structure is not great, the indoor terrace is lower than the outdoor terrace, and the problems of rainwater backflow, pipeline fracture, difficult discharge of sewage and the like are caused. The construction unit does various preventive measures before pile sinking, and the phenomenon of uneven settlement or overlarge settlement cannot be guaranteed. Therefore, there is a need for a vertical displacement restoring device for a pile top, which has a simple structure and is easy to construct.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a pile bolck displacement recovery unit can recover the inhomogeneous settlement that takes place among the pile foundation engineering or the too big phenomenon of settlement volume, guarantees overall structure's security, simple structure, easily construction.
The utility model provides a technical scheme that its technical problem adopted is: a pile top displacement recovery device comprises an embedded steel plate fixed at the top end of a cast-in-place pile and a hydraulic jack fixed on the embedded steel plate; a telescopic steel plate cap is fixed on the embedded steel plate and positioned at the outer side of the hydraulic jack and used for forming a closed inner cavity; the top side of the telescopic steel plate cap receives the superstructure; a pressure sensor for measuring the pressure borne by the telescopic steel plate cap and a displacement sensor for detecting the displacement change of the top side of the telescopic steel plate cap are arranged in the telescopic steel plate cap; the hydraulic jack is used for jacking the telescopic steel plate cap to enable the upper structure to recover and maintain to an initial position when the numerical values detected by the pressure sensor and the displacement sensor exceed a settlement allowable value; the side wall of the telescopic steel plate cap is also provided with a first reserved hole for pouring concrete high-strength mortar into the closed inner cavity after settlement is stable, so that the embedded steel plate, the telescopic steel plate cap and the bottom-side cast-in-place pile form a new cast-in-place pile bearing upper structure.
Furthermore, a support ring is fixed on the embedded steel plate; the hydraulic jack rotates in the supporting ring and is used for preventing the hydraulic jack from deviating in position during working.
Furthermore, the inner side of the support ring is in clearance fit with the periphery of the hydraulic jack.
Further, the recovery device also comprises a computer system and an electric pump station; the electric pump station, the pressure sensor and the displacement sensor are respectively connected with a computer system through a circuit; and the electric pump station is in driving connection with the hydraulic jack.
Further, the computer system is used for receiving data fed back by the pressure sensor and the displacement sensor in real time and comparing the data with a set sedimentation allowable value; the hydraulic jack is also used for controlling the electric pump station to drive the hydraulic jack; and when the real-time feedback data of the pressure sensor and the displacement sensor exceed the set sedimentation allowable value, the computer system controls the electric pump station to drive the hydraulic jack to jack up and realizes closed-loop control through the real-time feedback data of the pressure sensor and the displacement sensor.
Further, a second reserved hole is formed in the side wall of the telescopic steel plate cap; and the second reserved hole is used for allowing the connection wire of the electric pump station and the hydraulic jack to pass through and also used for allowing the connection wire of the pressure sensor, the displacement sensor and the computer system to pass through.
Furthermore, the embedded steel plate is fixed at the top end of the cast-in-place pile through embedded bolts.
Furthermore, the bottom side of the telescopic steel plate cap is welded and fixed with the embedded steel plate.
The utility model has the advantages that: the utility model discloses a pile bolck displacement recovery device, adopt and subside the data through pressure sensor and displacement sensor real-time detection, carry out the jacking through hydraulic jack, can recover the phenomenon that the uneven settlement or the settlement volume is too big that takes place in the pile foundation engineering, guarantee the security of overall structure; after settling is stable, pouring concrete high-strength mortar into a closed inner cavity formed between the embedded steel plate and the telescopic steel plate cap, so that the embedded steel plate, the telescopic steel plate cap and the cast-in-place pile at the bottom side form a new cast-in-place pile bearing upper structure; the computer system, the electric pump station, the hydraulic jack, the pressure sensor and the displacement sensor form closed-loop control, and restoration is more accurate and effective; simple structure and easy construction.
Drawings
Fig. 1 is a schematic view of a pile top displacement restoring device according to an embodiment.
Detailed Description
In order to deepen the understanding of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and embodiments, which are only used for explaining the present invention and are not limited to the protection scope of the present invention.
Examples
As shown in fig. 1, the present embodiment provides a pile top displacement restoring device, which includes an embedded steel plate 3 fixed at the top end of a cast-in-place pile 1, and a hydraulic jack 5 fixed on the embedded steel plate 3; a telescopic steel plate cap 7 is fixed on the embedded steel plate 3 and positioned at the outer side of the hydraulic jack 5 and used for forming a closed inner cavity; the topside of the telescopic steel plate cap 7 receives the superstructure 11; a pressure sensor 6 for measuring the pressure borne by the telescopic steel plate cap and a displacement sensor 10 for detecting the displacement change of the top side of the telescopic steel plate cap are arranged in the telescopic steel plate cap 7; the hydraulic jack 5 is used for jacking the telescopic steel plate cap 7 to restore and maintain the upper structure 11 to an initial position when the values detected by the pressure sensor 6 and the displacement sensor 10 exceed a settlement allowable value; the side wall of the telescopic steel plate cap 7 is further provided with a first reserved hole 8 for pouring concrete high-strength mortar into the closed inner cavity after settlement is stable, so that the embedded steel plate 3, the telescopic steel plate cap 7 and the cast-in-place pile 1 at the bottom side form a new cast-in-place pile bearing upper structure 11.
In the pile top displacement restoring device according to the embodiment, a support ring is fixed on the embedded steel plate 3; the hydraulic jack 5 rotates in the supporting ring and is used for preventing the hydraulic jack 5 from deviating in position during work.
In the pile top displacement restoring device of the present embodiment, the inner side of the support ring is in clearance fit with the outer periphery of the hydraulic jack 5.
In the pile top displacement restoring device of the embodiment, the restoring device further comprises a computer system 13 and an electric pump station 12; the electric pump station 12, the pressure sensor 6 and the displacement sensor 10 are respectively connected with a computer system 13 through lines; the electric pump station 12 is in driving connection with the hydraulic jack 5.
In the pile top displacement restoring device of this embodiment, the computer system 13 is configured to receive data fed back by the pressure sensor 6 and the displacement sensor 10 in real time, and compare the data with a set allowable settlement value; the hydraulic jack is also used for controlling the electric pump station 12 to drive the hydraulic jack 5; when the real-time feedback data of the pressure sensor 6 and the displacement sensor 10 exceed the set sedimentation allowable value, the computer system 13 controls the electric pump station 12 to drive the hydraulic jack 5 to lift and realize closed-loop control through the real-time feedback data of the pressure sensor 6 and the displacement sensor 10.
In the pile top displacement restoring device of this embodiment, a second reserved hole 9 is further formed in the side wall of the telescopic steel plate cap 7; the second reserved hole 9 is used for the connection of the electric pump station 12 and the hydraulic jack 5 to pass through, and is also used for the connection of the pressure sensor 6, the displacement sensor 10 and the computer system to pass through.
In the pile top displacement restoring device of the embodiment, the embedded steel plate 3 is fixed at the top end of the cast-in-place pile 1 through the embedded bolt 4.
In the pile top displacement restoring device of this embodiment, the bottom side of the telescopic steel plate cap 7 is welded and fixed to the embedded steel plate 3.
In the pile top displacement restoration device of the embodiment, cast-in-place pile hole forming construction is performed on a construction site, after hole forming, bottom cleaning is performed, a reinforcement cage 2 is arranged, and concrete is poured to form a cast-in-place pile 1; after the construction of the cast-in-place pile is completed, arranging an embedded steel plate at the top of the cast-in-place pile, fixing the embedded steel plate on the pile top by using an embedded bolt, and welding a steel ring with the radius slightly larger than that of the bottom of the jack in the middle of the steel plate; the hydraulic jack is placed in the circular ring to be in clearance fit with the circular ring; a displacement sensor and a pressure sensor are arranged on the inner side of the telescopic steel plate cap; two reserved holes are formed in the side wall of the telescopic steel plate cap and are externally connected with galvanized steel pipes, wherein the first reserved hole is a high-pressure grouting reserved hole, and the second reserved hole is used for wiring of an electric pump station between a jack and equipment and wiring of a pressure sensor, a displacement sensor and a computer system; and then covering the telescopic steel plate cap on the outer side of the hydraulic jack, welding the bottom of the telescopic steel plate cap with the embedded steel plate to form a closed inner cavity, and bearing the upper structure by the telescopic steel plate cap.
The pile top displacement recovery device of this embodiment, superstructure can take place the settlement of different degrees when construction stage and operation stage, when taking place to subside, displacement sensor and pressure sensor real-time feedback data to computer system, with set for subsiding the allowable value and compare, when sensor feedback subsides data and is greater than set for the allowable value, computer system sends the instruction and adjusts electric pump station, thereby make hydraulic jack produce the holding power that slightly is greater than top pressure with the speed jacking steel sheet cap of stabilizing slowly thereby make superstructure resume to design elevation. After the upper structure is restored to the designed elevation, the computer system sends out an instruction to adjust the electric pump station to enable the hydraulic jack to generate a supporting force equal to the pressure above the hydraulic jack and keep the hydraulic jack still; when the settlement of the upper structure gradually tends to be stable, namely the displacement generated in a long time is far smaller than a settlement allowable value, a computer system sends an instruction to adjust an electric pump station to stop the hydraulic jack, and concrete high-strength mortar is poured into the closed inner cavity through the first reserved hole for fixation; the embedded steel plate, the steel plate cap and the original cast-in-place pile form an integral new cast-in-place pile to jointly act to support the building, and the building is guaranteed to be within a certain error range of design standard height for a long time.
According to the pile top displacement restoration device, the settlement data is detected in real time through the pressure sensor and the displacement sensor, and the hydraulic jack is used for jacking, so that the phenomenon of uneven settlement or overlarge settlement in pile foundation engineering can be restored, and the safety of the whole structure is ensured; after settling is stable, pouring concrete high-strength mortar into a closed inner cavity formed between the embedded steel plate and the telescopic steel plate cap, so that the whole restoration device and a cast-in-place pile at the bottom side form a new cast-in-place pile bearing upper structure; the computer system, the electric pump station, the hydraulic jack, the pressure sensor and the displacement sensor form closed-loop control, and restoration is more accurate and effective; simple structure and easy construction.
It should be noted that the specific control program of the recovery device is not specifically limited in the present application, and may be any program as long as the above-described corresponding control can be implemented.
The above-mentioned embodiments should not limit the present invention in any way, and all the technical solutions obtained by adopting equivalent replacement or equivalent conversion fall within the protection scope of the present invention.
Claims (8)
1. The utility model provides a pile bolck displacement resetting means which characterized in that: the device comprises an embedded steel plate fixed at the top end of a cast-in-place pile and a hydraulic jack fixed on the embedded steel plate; a telescopic steel plate cap is fixed on the embedded steel plate and positioned at the outer side of the hydraulic jack and used for forming a closed inner cavity; the top side of the telescopic steel plate cap receives the superstructure; a pressure sensor for measuring the pressure borne by the telescopic steel plate cap and a displacement sensor for detecting the displacement change of the top side of the telescopic steel plate cap are arranged in the telescopic steel plate cap; the hydraulic jack is used for jacking the telescopic steel plate cap to enable the upper structure to recover and maintain to an initial position when the numerical values detected by the pressure sensor and the displacement sensor exceed a settlement allowable value; the side wall of the telescopic steel plate cap is also provided with a first reserved hole for pouring concrete high-strength mortar into the closed inner cavity after settlement is stable, so that the embedded steel plate, the telescopic steel plate cap and the bottom-side cast-in-place pile form a new cast-in-place pile bearing upper structure.
2. The pile top displacement restoring device according to claim 1, wherein: a support ring is fixed on the embedded steel plate; the hydraulic jack rotates in the supporting ring and is used for preventing the hydraulic jack from deviating in position during working.
3. The pile top displacement restoring device according to claim 2, wherein: the inner side of the support ring is in clearance fit with the periphery of the hydraulic jack.
4. A pile top displacement restoring apparatus according to claim 1, 2 or 3, wherein: the recovery device also comprises a computer system and an electric pump station; the electric pump station, the pressure sensor and the displacement sensor are respectively connected with a computer system through a circuit; and the electric pump station is in driving connection with the hydraulic jack.
5. The pile top displacement restoring device according to claim 4, wherein: the computer system is used for receiving data fed back by the pressure sensor and the displacement sensor in real time and comparing the data with a set sedimentation allowable value; the hydraulic jack is also used for controlling the electric pump station to drive the hydraulic jack; and when the real-time feedback data of the pressure sensor and the displacement sensor exceed the set sedimentation allowable value, the computer system controls the electric pump station to drive the hydraulic jack to jack up and realizes closed-loop control through the real-time feedback data of the pressure sensor and the displacement sensor.
6. The pile top displacement restoring device according to claim 4, wherein: a second reserved hole is formed in the side wall of the telescopic steel plate cap; and the second reserved hole is used for allowing the connection wire of the electric pump station and the hydraulic jack to pass through and also used for allowing the connection wire of the pressure sensor, the displacement sensor and the computer system to pass through.
7. A pile top displacement restoring apparatus according to claim 1, 2 or 3, wherein: the embedded steel plate is fixed at the top end of the cast-in-place pile through embedded bolts.
8. A pile top displacement restoring apparatus according to claim 1, 2 or 3, wherein: and the bottom side of the telescopic steel plate cap is welded and fixed with the embedded steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922304334.9U CN211690479U (en) | 2019-12-19 | 2019-12-19 | Pile top displacement recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922304334.9U CN211690479U (en) | 2019-12-19 | 2019-12-19 | Pile top displacement recovery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211690479U true CN211690479U (en) | 2020-10-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922304334.9U Expired - Fee Related CN211690479U (en) | 2019-12-19 | 2019-12-19 | Pile top displacement recovery device |
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| Country | Link |
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| CN (1) | CN211690479U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114150719A (en) * | 2021-12-16 | 2022-03-08 | 上海宝冶工程技术有限公司 | Device and method for adjusting uneven settlement |
-
2019
- 2019-12-19 CN CN201922304334.9U patent/CN211690479U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114150719A (en) * | 2021-12-16 | 2022-03-08 | 上海宝冶工程技术有限公司 | Device and method for adjusting uneven settlement |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201016 Termination date: 20211219 |
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| CF01 | Termination of patent right due to non-payment of annual fee |