CN218466602U - Concrete precast pile resistance to plucking detection device - Google Patents
Concrete precast pile resistance to plucking detection device Download PDFInfo
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- CN218466602U CN218466602U CN202222576616.6U CN202222576616U CN218466602U CN 218466602 U CN218466602 U CN 218466602U CN 202222576616 U CN202222576616 U CN 202222576616U CN 218466602 U CN218466602 U CN 218466602U
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Abstract
The utility model discloses a concrete precast pile pulling resistance detection device, wherein a pile head (1) of the concrete precast pile is connected with a connecting disc (4) through a screw rod (3); the middle part of the connecting disc (4) is provided with a through hole I (12) for the steel strand (7) to pass through; the steel strand (7) passes through the through hole I (12) and is connected with the extrusion anchorage device (6); the steel strand (7) is connected with an anchorage device (10) at the tensioning end on the feed-through jack (9); the feed-through jack (9) is fixed on the upper surface of the counter-force beam (8); and a through hole II (14) for the steel strand (7) to pass through is arranged in the middle of the reaction beam (8). The utility model discloses a punching jack to and the middle part is equipped with the punching counter-force roof beam that lets through-hole II (14) that steel strand wires (7) passed, counter-force roof beam focus after the installation, jack resultant force and the coincidence of the vertical axis of concrete precast pile head, and assurance system resultant force central direction is perpendicular, improves the vertical stress detection effect of pile body.
Description
Technical Field
The utility model relates to a ground foundation engineering is equipment field for the experiment specifically is concrete precast pile resistance to plucking detection device.
Background
According to the standards DB32/T3916-2020, JGJ106-2014 and the like, when the single-pile vertical uplift bearing limit load capacity of the concrete precast pile is determined and whether the vertical uplift bearing capacity meets the design requirements is judged, a single-pile vertical uplift static load test is carried out.
The existing anti-pulling device is adopted, the anti-pulling device is connected with a test pile in a steel bar welding connection mode, the process requirement is high, the welding quality is not too high, the test failure is directly caused, the welding process is time-consuming, and the detection efficiency is influenced.
CN209854788U discloses a vertical resistance to plucking static test device of single pile, including counter-force mechanism, hydraulic jack, and steel strand wires, counter-force mechanism includes the steel support, the counter-force girder steel, steel construction anchor frame and counter-force support, the counter-force support is supported in the bottom of counter-force girder steel, steel construction anchor frame passes through the connecting rod and is connected with the steel support, hydraulic jack fixes on the counter-force girder steel, hydraulic jack's power take off end and steel leg joint, be provided with a plurality of punching jacks in the steel construction anchor frame, punching jack passes through the steel strand wires and is connected with the main muscle of concrete pile foundation, when punching jack surpassed the maximum tension threshold value, steel strand wires can produce vertical displacement relative punching jack. However, the hydraulic jack is adopted to apply a vertical upward acting force to the steel support, the gravity center of the counter-force beam and the resultant force of the jack can not be ensured to coincide with the vertical axis of the pile head of the concrete precast pile, the direction of the center of the resultant force of the system can not be ensured to be vertical, and the detection effect of the vertical stress of the pile body is relatively poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a concrete precast pile resistance to plucking detection device is provided to ensure that counter-force beam focus, jack resultant force and the coincidence of the vertical axis of concrete precast pile head, guarantee that system's resultant force central direction is perpendicular, improves the vertical stress detection effect of pile body.
In order to solve the technical problem, the utility model provides a concrete precast pile pulling resistance detection device, which comprises a counterforce beam above the pile head of the concrete precast pile, wherein the pile head of the concrete precast pile is connected with a connecting disc through a screw rod; the middle part of the connecting disc is provided with a through hole I for the steel strand to pass through; one end of the steel strand penetrates through the through hole I and is connected with the extrusion anchorage device; the other end of the steel strand is connected with a tensioning end anchorage device on the straight-through jack; the feed-through jack is fixed on the upper surface of the counter-force beam; and a through hole II for the steel strand to pass through is formed in the middle of the counter-force beam.
Furthermore, a threaded hole is reserved in the pile head of the concrete precast pile, and a screw rod is installed in the threaded hole.
Furthermore, the connecting disc is arranged on the screw in a penetrating mode and is fixed through the nut.
Further, the screw is a harness cord screw.
Furthermore, the extrusion anchorage device is fixed on the bottom surface of the connecting disc; the central axis of the extrusion anchorage device and the central axis of the through hole I are on the same straight line.
Furthermore, a clamping piece for clamping the steel strand is arranged in the extrusion anchorage device.
Furthermore, an anchorage device at the tensioning end is fixedly arranged at the power output end of the straight-through jack.
Compared with the prior art, the utility model, following beneficial effect has:
1. the utility model discloses a punching jack to and the middle part is equipped with the punching counter-force roof beam that lets through-hole II that steel strand wires passed, counter-force roof beam focus after the installation, jack make a concerted effort and the coincidence of the vertical axis of concrete precast pile head, and the assurance system makes a concerted effort the central direction perpendicular, improves the vertical stress detection effect of pile body.
2. The utility model connects the pile head of the concrete precast pile with the connecting disc through the screw rod, the connecting disc is connected with the steel strand through the extrusion anchorage device, and the steel strand is connected with the tensioning end anchorage device on the center-penetrating jack; the center-penetrating jack is fixed on the counter-force beam with the middle part provided with the through hole II for the steel strand to pass through, so that the installation is convenient, few installation personnel can complete the installation work, the harsh technical requirement of welding technology for the installation personnel is reduced, the installation personnel can complete the installation work without mastering the welding technical, the detection efficiency is improved, and the working efficiency is improved.
3. The utility model discloses a harness cord screw rod can freely adjust the position of nut, and the equipment is convenient.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is the connection diagram of the screw rod and the connection disc of the present invention.
Fig. 3 is a schematic view of the extrusion anchor of the present invention.
Fig. 4 is a schematic view of the clip structure of the present invention.
In the drawing, 1, a concrete precast pile head, 2, a reaction pile, 3, a screw rod, 4, a connecting disc, 5, a nut, 6, an extrusion anchorage device, 7, a steel strand, 8, a reaction beam, 9, a penetrating type jack, 10, a tensioning end anchorage device, 11, a threaded hole, 12, a through hole I, 13, a clamping piece and 14, a through hole II are arranged.
Detailed Description
The present invention will be explained in further detail with reference to the accompanying drawings.
As shown in fig. 1, in the anti-pulling detection device for the concrete precast pile, a pile head 1 of the concrete precast pile is connected with a connecting disc 4 through a screw rod 3. And the middle part of the connecting disc 4 is provided with a through hole I12 for the steel strand 7 to pass through. One end of the steel strand 7 penetrates through the through hole I12 and is connected with the extrusion anchorage device 6. The extrusion anchorage device 6 is welded or bolted on the bottom surface of the connecting disc 4. A steel strand hole in the center of the extrusion anchor 6, through which the steel strand 7 passes, is aligned with the through hole I12, so that the central axis of the extrusion anchor 6 and the central axis of the through hole I12 are on the same straight line. The other end of the steel strand 7 is connected with an anchorage 10 at the tensioning end on the feed-through jack 9. The power output end of the feed-through jack 9 is fixedly provided with an anchorage device 10 at the tensioning end. The feed-through jack 9 is fixed on the upper surface of the reaction beam 8. The reaction beam 8 is placed on the reaction pile 2 or connected to the reaction beam 8 by anchor bars on the reaction pile 2. And a through hole II 14 for the steel strand 7 to pass through is formed in the middle of the counter-force beam 8. The counter-force beam 8 can be formed by pouring steel bars and concrete, and a through hole II 14 is reserved in the middle during pouring. Through the center-penetrating jack and the center-penetrating counter-force beam with the middle part provided with the through hole II 14 for the steel strand 7 to pass through, the center of gravity of the counter-force beam and the resultant force of the jack after installation coincide with the vertical axis of the pile head of the precast concrete pile, the vertical direction of the resultant force center of the system is ensured, and the vertical stress detection effect of the pile body is improved.
As shown in fig. 2, a threaded hole 11 is reserved on the pile head of the concrete precast pile, and a screw rod 3 is installed in the threaded hole 11. The screw rod 3 is provided with a connecting disc 4 in a penetrating way and is fixed by a screw cap 5. The screw rod 3 is a harness cord screw rod, the position of the nut can be freely adjusted, and the assembly is convenient.
As shown in fig. 3 and 4, a clamping piece 13 for clamping the steel strand 7 is arranged in the extrusion anchor 6. The clamping pieces 13 are three pieces and are trisected along the circumference. The three clamping pieces 13 are pressed into the extrusion anchorage device 6 after wrapping the steel strand 7, and the anchorage is firm.
During working, a threaded hole 11 reserved in a pile head 1 of the concrete precast pile is connected with the pile head by a high-strength screw rod, the high-strength screw rod is connected with a connecting disc 4 and fixed by a high-strength nut, a steel strand 7 penetrates through the center of the connecting disc 4, the end part of the steel strand 7 is connected with an extrusion anchorage device 6, and the steel strand 7 penetrates through a through type counter-force beam 8 and then penetrates through a through type jack 9 to be connected with a tensioning end anchorage device 10.
The anti-pulling detection device is suitable for anti-pulling detection of all concrete precast piles below 1000kN, safe, reliable and convenient to install, few installation personnel can complete installation work, harsh technical requirements for welding technology adopted by installation personnel are reduced, installation personnel can complete installation work without mastering welding technical ability, detection efficiency is improved, and work efficiency is improved.
It will be understood by those skilled in the art that the embodiments of the present invention as described above and shown in the drawings are given by way of example only and are not limiting of the present invention. The purpose of the utility model is completely and effectively realized. The functional and structural principles of the present invention have been shown and described in the embodiments without departing from the principles, embodiments of the present invention may have any deformation or modification.
Claims (7)
1. Concrete precast pile resistance to plucking detection device, counter-force roof beam (8) including concrete precast pile head (1) top, its characterized in that: the concrete precast pile head (1) is connected with the connecting disc (4) through a screw (3); the middle part of the connecting disc (4) is provided with a through hole I (12) for the steel strand (7) to pass through; one end of the steel strand (7) penetrates through the through hole I (12) to be connected with the extrusion anchorage device (6); the other end of the steel strand (7) is connected with an anchorage device (10) at the tensioning end on the feed-through jack (9); the feed-through jack (9) is fixed on the upper surface of the counter-force beam (8); and a through hole II (14) for the steel strand (7) to pass through is arranged in the middle of the counter-force beam (8).
2. The apparatus for detecting uplift of a precast concrete pile as recited in claim 1, wherein: a threaded hole (11) is reserved in the pile head (1) of the concrete precast pile, and a screw rod (3) is installed in the threaded hole (11).
3. The apparatus for detecting uplift of a precast concrete pile as claimed in claim 2, wherein: the connecting disc (4) is arranged on the screw (3) in a penetrating mode and is fixed through the nut (5).
4. The apparatus for detecting uplift of a precast concrete pile as recited in claim 1, wherein: the screw (3) is a harness cord screw.
5. The apparatus for detecting uplift of a precast concrete pile as recited in claim 1, wherein: the extrusion anchorage device (6) is fixed on the bottom surface of the connecting disc (4); the central axis of the extrusion anchor (6) and the central axis of the through hole I (12) are on the same straight line.
6. The apparatus for detecting uplift of a precast concrete pile as recited in claim 1, wherein: and a clamping piece (13) for clamping the steel strand (7) is arranged in the extrusion anchorage device (6).
7. The apparatus for detecting uplift of a precast concrete pile as recited in claim 1, wherein: and an anchorage device (10) at a tensioning end is fixedly arranged at the power output end of the feed-through jack (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222576616.6U CN218466602U (en) | 2022-09-28 | 2022-09-28 | Concrete precast pile resistance to plucking detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222576616.6U CN218466602U (en) | 2022-09-28 | 2022-09-28 | Concrete precast pile resistance to plucking detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218466602U true CN218466602U (en) | 2023-02-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222576616.6U Active CN218466602U (en) | 2022-09-28 | 2022-09-28 | Concrete precast pile resistance to plucking detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218466602U (en) |
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2022
- 2022-09-28 CN CN202222576616.6U patent/CN218466602U/en active Active
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