CN215629898U - Pile foundation reinforcement cage installation positioner - Google Patents
Pile foundation reinforcement cage installation positioner Download PDFInfo
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- CN215629898U CN215629898U CN202122014056.0U CN202122014056U CN215629898U CN 215629898 U CN215629898 U CN 215629898U CN 202122014056 U CN202122014056 U CN 202122014056U CN 215629898 U CN215629898 U CN 215629898U
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Abstract
The pile foundation reinforcement cage is provided with a positioning device, and the positioning device comprises an elevation positioning device and a central positioning device; the elevation positioning device comprises two shoulder pole beams transversely arranged on the upper edge of the steel casing, wherein base plates are arranged on the shoulder pole beams and penetrate through the hanging ribs, and the lower ends of the hanging ribs are connected with main ribs of the steel reinforcement cage through connectors; the central positioning device comprises a steel ring with the diameter being the same as that of the reinforcing hoop of the steel reinforcement cage, four steel pipes are fixed to the outer circle side of the steel ring in an evenly distributed mode, two nuts are fixed to the inner circle side of the steel ring in an evenly distributed mode, the nuts are used for penetrating through vertical pins at two ends of the positioning rod, and a central mark is arranged at the middle point of the positioning rod. The device can realize the installation and positioning of the reinforcement cage in the pile foundation in the radial direction and the vertical direction, the positioning process is quick and convenient, the accuracy is high, the error is small, and the device can visually retest and control to ensure the installation accuracy.
Description
Technical Field
The utility model relates to the technical field of constructional engineering, in particular to a pile foundation reinforcement cage installation positioning device.
Background
Deep foundations consisting of piles and pile caps connected to the tops of the piles or single-pile foundations consisting of columns connected to pile foundations, referred to as pile foundations for short. In high-rise buildings and bridge engineering, pile foundations are widely applied. In the construction of the pile foundation of the bridge, firstly, drilling is carried out, a steel casing is embedded, holes are cleaned, then a plurality of prefabricated steel reinforcement cages are sequentially hung into the steel casing by using a crane, and finally, the steel reinforcement cages are hung to the bottom after being welded and connected. Because the dead weight of steel reinforcement cage is great, the steel reinforcement cage is put in the steel protects a section of thick bamboo, and the deflection can take place for vertical main muscle, and the form verticality of whole steel reinforcement cage is not enough, finally behind the cast-in-place concrete, and the inner structure of whole bored concrete pile is unbalanced, produces great harmful effects to the building of pile foundation top. Secondly, in the process of pouring concrete, the cast-in-place pile can even slightly float due to the floating force action of the concrete, and the offset of the position of the reinforcement cage in the pile foundation is further increased. In order to enable the reinforcement cage to be located at the middle shaft position of the steel casing, a plurality of cushion blocks are often arranged on the side face of the reinforcement cage, so that the deflection degree of the reinforcement cage can be reduced to a certain degree, but the defect of deformation, deflection and deflection of the reinforcement cage in the steel casing cannot be completely eliminated.
On the other hand, even if the defect of self-deflection deformation of the steel reinforcement cage is ignored, the steel reinforcement cage is also an important matter for aligning the center of the inner diameter of the steel reinforcement cage, and theoretically, the center of the circle of the inner diameter of the steel reinforcement cage must be at the same position as the center of the circle of the steel reinforcement cage. However, the diameter of the steel casing is large, so that an engineer cannot directly measure the center of the steel reinforcement cage when determining the center of the steel reinforcement cage, which is very inconvenient, and sometimes the steel reinforcement cage and the inner wall of the steel casing are spaced to estimate the centering condition of the steel reinforcement cage, so that the position of the steel reinforcement cage and the position of the theoretical center have large deviation, and the overall structure of the cast-in-place pile is finally influenced.
Disclosure of Invention
The utility model aims to provide a pile foundation reinforcement cage installation positioning device which comprises an elevation positioning device and a central positioning device, wherein a shoulder pole beam is supported at the upper end of a steel casing and connected with a main rib of the reinforcement cage, the reinforcement cage is suspended and positioned above the steel casing, the central positioning device is sleeved on the reinforcement cage, and the central position of the reinforcement cage is determined by using a detachable positioning rod after being compared and adjusted with the central point of a pile hole.
In order to achieve the purpose, the technical scheme of the utility model is as follows:
the pile foundation reinforcement cage is provided with a positioning device, and the positioning device comprises an elevation positioning device and a central positioning device;
the elevation positioning device comprises two shoulder pole beams transversely arranged on the upper edge of the steel casing, wherein base plates are arranged on the shoulder pole beams and penetrate through the hanging ribs, and the lower ends of the hanging ribs are connected with main ribs of the steel reinforcement cage through connectors;
the central positioning device comprises a steel ring with the diameter being the same as that of the reinforcing hoop of the steel reinforcement cage, four steel pipes are fixed to the outer circle side of the steel ring in an evenly distributed mode, two nuts are fixed to the inner circle side of the steel ring in an evenly distributed mode, the nuts are used for penetrating through vertical pins at two ends of the positioning rod, and a central mark is arranged at the middle point of the positioning rod. The detachable locating lever can conveniently carry out the concrete when pouring at the pile foundation, can not block stretching into and removing of filling pipe.
The shoulder pole beam is formed by two channel steel in a back-to-back manner, a connecting block is arranged in the middle of the two channel steel and is welded and fixed, and a gap between the two channel steel penetrates through the hanging rib; the structure of the double carrying pole beams ensures that the whole structure of the carrying pole beam is balanced and stable.
The connector is a double-hole connector, one hole is a through hole and penetrates through the hanging rib, and a hanging plate is mounted at the lower end of the hanging rib and fixed by a nut; the other hole is a taper hole, and a tapered anchorage device is arranged in the taper hole and penetrates through the main rib; under the action of gravity of the steel reinforcement cage, the steel sheets of the conical anchorage devices clamp the main reinforcement and cannot loosen under the action of the conical holes.
Four reinforcing ribs are uniformly welded on the inner circle of the steel ring; the reinforcing ribs can improve the deformation resistance of the steel ring.
The construction method of the pile foundation reinforcement cage suspension positioning structure comprises the following steps:
(1) prefabricating a steel reinforcement cage, hoisting the steel reinforcement cage by a crane, and placing the steel reinforcement cage into a steel protection cylinder, wherein the steel reinforcement cage is hoisted on the edge of the steel protection cylinder by a shoulder pole beam frame;
(2) calculating the elevation of the top of the steel bar cage, determining the length and the connecting position of a hanging bar, placing a main bar connecting hole of a connector on the top of the main bar, and then placing a steel frame piece of a conical anchorage device into an anchor hole for clamping;
(3) respectively penetrating the suspender into a suspender hole of the steel reinforcement cage connector and a gap between the shoulder pole beams, and twisting the nut to a required suspender length position;
(4) installing a central positioning device at the top of the steel reinforcement cage, wherein the inclination of the horizontal plane of the installed positioning steel ring is required to be less than 1%;
(5) obtaining the position of a designed center point of the pile foundation by a cross bracing wire method, and moving the position of the reinforcement cage to ensure that the position of a center point reference rod on the center point positioning device is superposed with the position of the designed center point;
(6) 4 plane positioning steel bars are spot-welded on the four main bars fixed by the central point positioning device and used for fixing the position of the central point;
(7) taking down the positioning rod, inserting the positioning rod into the concrete pouring pipe, pouring the concrete into the pile foundation, and after the concrete is hardened, removing the center point positioning device and the elevation positioning device to the next pile foundation for use;
the utility model has the advantages that:
1. the utility model adopts the elevation positioning device and the center positioning device, can realize the installation and positioning of the reinforcement cage in the pile foundation in the radial direction and the vertical direction, has quick and convenient positioning process, high accuracy and smaller error, and can visually retest and control the device to ensure the installation accuracy.
2. The steel reinforcement cage is adopted for suspension construction, so that the qualification rate of the steel reinforcement protective layer is greatly improved, and the service life of the pile foundation is prolonged; the connector has good fastening effect and stable structure and is not easy to loosen.
3. The device can be detached after use and can be reused, so that the cost can be saved.
Description of the drawings:
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is an enlarged view of the structure at I in FIG. 1;
FIG. 3 is a schematic view of an appearance structure of the elevation positioning apparatus;
FIG. 4 is a structural diagram illustrating a usage state of the elevation positioning apparatus;
FIG. 5 is a schematic view of the external structure of the center positioning device (positioning rod removed);
FIG. 6 is a schematic view of the external structure of the center positioning device (positioning rod installation);
FIG. 7 is a structural diagram illustrating a usage status of the centering device;
the serial numbers and component names in the figures are: 1. a main rib; 2. an elevation positioning device; 21. a shoulder pole beam; 22. connecting blocks; 23. a base plate; 24. hanging the ribs; 25. a connector; 251. a conical anchor; 26. hanging the plate; 3. a central positioning device; 31. steel rings; 32. a steel pipe; 33. a nut; 34. positioning a rod; 341. marking the center; 35. reinforcing ribs; 4. and (5) a steel casing.
Detailed Description
Example 1
The pile foundation reinforcement cage is provided with a positioning device, and the positioning device comprises an elevation positioning device 2 and a center positioning device 3;
the elevation positioning device 2 comprises two shoulder pole beams 21 transversely arranged on the upper edge of the steel casing 4, wherein the shoulder pole beams 21 are provided with backing plates 23 and penetrate through hanging ribs 24, and the lower ends of the hanging ribs 24 are connected with main ribs 1 of a steel reinforcement cage through connectors 25;
the central positioning device 3 comprises a steel ring 31 with the same diameter as the reinforcing hoop of the steel reinforcement cage, four steel pipes 32 are uniformly distributed and fixed on the outer circle side of the steel ring 31, two screw caps 33 are uniformly distributed and fixed on the inner circle side of the steel ring 31, the screw caps 33 are used for penetrating through vertical pins at two ends of a positioning rod 34, and a central mark 341 is arranged at the middle point of the positioning rod 34;
the carrying pole beam 21 is formed by two channel steel back to back, a connecting block 22 is arranged in the middle of the two channel steel and is welded and fixed, and a gap between the two channel steel penetrates through a hanging rib 24;
the connector 25 is a double-hole connector, one of which is a through hole and penetrates through the hanging rib 24, and a hanging plate 26 is arranged at the lower end of the hanging rib 24 and is fixed by a nut; the other hole is a taper hole, a tapered anchorage 251 is arranged in the taper hole and penetrates through the main rib 1;
four reinforcing ribs 35 are uniformly welded on the inner circle of the steel ring 31.
Claims (4)
1. Pile foundation steel reinforcement cage installation positioner, its characterized in that: the positioning device comprises an elevation positioning device (2) and a center positioning device (3);
the elevation positioning device (2) comprises two shoulder pole beams (21) transversely arranged on the upper edge of the steel casing (4), a backing plate (23) is arranged on each shoulder pole beam (21) and penetrates through a hanging rib (24), and the lower end of each hanging rib (24) is connected with a main rib (1) of the steel reinforcement cage through a connector (25);
the central positioning device (3) comprises a steel ring (31) with the diameter being the same as that of the reinforcing hoop of the steel reinforcement cage, four steel pipes (32) are uniformly distributed and fixed on the outer circle side of the steel ring (31), two nuts (33) are uniformly distributed and fixed on the inner circle side of the steel ring (31), the nuts (33) are used for penetrating through vertical pins at two ends of a positioning rod (34), and a central mark (341) is arranged at the middle point of the positioning rod (34).
2. The pile foundation reinforcement cage installation positioning device of claim 1, wherein: the shoulder pole beam (21) is formed by two channel steel in a back-to-back manner, a connecting block (22) is arranged in the middle of the two channel steel and is welded and fixed, and a gap between the two channel steel penetrates through a hanging rib (24).
3. The pile foundation reinforcement cage installation positioning device of claim 1, wherein: the connector (25) is a double-hole, one hole is a through hole and penetrates through the hanging rib (24), and a hanging plate (26) is installed at the lower end of the hanging rib (24) and fixed by a nut; the other hole is a taper hole, and a tapered anchorage device (251) is arranged in the taper hole and penetrates through the main rib (1).
4. The pile foundation reinforcement cage installation positioning device of claim 1, wherein: four reinforcing ribs (35) are uniformly welded on the inner circle of the steel ring (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122014056.0U CN215629898U (en) | 2021-08-25 | 2021-08-25 | Pile foundation reinforcement cage installation positioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122014056.0U CN215629898U (en) | 2021-08-25 | 2021-08-25 | Pile foundation reinforcement cage installation positioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215629898U true CN215629898U (en) | 2022-01-25 |
Family
ID=79901932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122014056.0U Active CN215629898U (en) | 2021-08-25 | 2021-08-25 | Pile foundation reinforcement cage installation positioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215629898U (en) |
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2021
- 2021-08-25 CN CN202122014056.0U patent/CN215629898U/en active Active
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