Rapid straightening and positioning device for pier top reserved ribs of prefabricated pipe pier of fabricated bridge

Abstract

The utility model discloses a quick straightening and positioning device for a pier top reserved rib of an assembly type bridge prefabricated pipe pier, which relates to the technical field of capital construction and comprises an annular metal plate, a plurality of positioning through holes are formed in the annular metal plate along the thickness direction of the annular metal plate and are distributed in an annular array by taking the axis of the annular metal plate as the center, and the positioning through holes are communicated with the annular metal plate. The number of the positioning through holes is consistent with that of the reserved ribs, and the distance between the centers of every two adjacent positioning through holes is consistent with the designed distance between the centers of every two adjacent reserved ribs. The annular metal plate is provided with the positioning through holes corresponding to the pier top reserved ribs of the prefabricated pipe pier, the pier top reserved ribs of the prefabricated pipe pier are inserted into the positioning through holes of the annular metal plate to achieve rapid straightening of the reserved ribs, the straightening position is accurate, and limiting placement of the pier top reserved ribs of the prefabricated pipe pier is achieved under limiting of the annular metal plate. The problems of repeated positioning and back-and-forth pulling and straightening of the pier top reserved rib of the prefabricated pipe pier are solved, the working efficiency is improved, and the construction difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of infrastructure, in particular to a device for quickly straightening and positioning reserved reinforcements on the top of a prefabricated pipe pier of an assembled bridge. Background Art

[0002] With the continuous growth of social economy and the continuous improvement of bridge construction technology, prefabricated and assembled bridges have become an important development direction of bridge construction due to their advantages such as good construction quality, small impact on the environment, short on-site operation time, and high construction safety level. Prefabricated and assembled concrete bridges have also become a new hot spot in bridge engineering. The substructure of the bridge, as the main load-bearing component of the bridge, has always been the focus of bridge design and construction. Whether each link can be controlled well through scientific and effective construction methods during construction is the key to bridge engineering construction.

[0003] The prefabricated pipe piers of assembled bridges need to be spliced with the prefabricated cap beams on top. Reserved bars extend from the top of the prefabricated pipe piers for splicing with the reserved holes of the prefabricated cap beams. The reserved bars on the top of the prefabricated pipe piers are exposed to the outside and may be bent due to collision with the reserved bars during placement or transportation. During the splicing construction of the assembled lower structure of the bridge, the reserved bars on the top of the prefabricated pipe piers need to be straightened by moving back and forth. There is a problem that the straightening position is inaccurate and cannot be connected with the reserved holes of the prefabricated cap beam. The operation of straightening the reserved bars increases the construction difficulty and reduces the construction efficiency.

[0004] Therefore, it is necessary to invent a device for quickly straightening and positioning the reserved reinforcement on the top of the prefabricated pipe pier of an assembled bridge to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a device for quickly straightening and positioning reserved reinforcements on the top of prefabricated pipe piers of assembled bridges, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for quickly straightening and positioning reserved reinforcement on the top of a prefabricated pipe pier of an assembled bridge, comprising an annular metal plate, wherein the annular metal plate is provided with a plurality of positioning through holes along its thickness direction, and the plurality of positioning through holes are arranged in an annular array with the axis of the annular metal plate as the center, the number of the positioning through holes is consistent with the reserved reinforcement, and the center distance between two adjacent positioning through holes is consistent with the designed center distance between two adjacent reserved reinforcements.

[0007] Optionally, the inner diameter of the annular metal plate is consistent with the inner diameter of the prefabricated pipe pier, and the outer diameter of the annular metal plate is greater than the outer diameter of the prefabricated pipe pier.

[0008] Optionally, the outer diameter of the annular metal plate is 8-12 cm greater than the outer diameter of the prefabricated pipe pier.

[0009] Optionally, the diameter value of the positioning through-hole is the same as the diameter value of the reserved hole in the precast capping beam.

[0010] Optionally, it further includes a positioning ring, which includes a first half-ring, a second half-ring and a bolt. One end of the first half-ring is hinged to one end of the second half-ring. When the other ends are fitted, the first half-ring and the second half-ring form a circular structure. Extension seats are provided on the outer walls of the unhinged ends of the first half-ring and the second half-ring, and the two extension seats are fixedly connected by threads of the bolt.

[0011] Optionally, sealing gaskets are provided on the inner walls of the first half-ring and the second half-ring.

[0012] Optionally, a plurality of connecting through-holes are provided along the thickness direction of the edge of the annular metal plate and the positioning ring. When the positioning ring is locked and the annular metal plate and the positioning ring are coaxially placed, a plurality of connecting through-holes on the annular metal plate correspond coaxially to a plurality of connecting through-holes on the positioning ring.

[0013] Optionally, it further includes a screw rod. The number of the screw rods is several and is the same as the number of connecting through-holes on the annular metal plate. The screw rods are inserted between the corresponding two connecting through-holes of the annular metal plate and the positioning ring, and four nuts are screwed on the screw rods. The four nuts are respectively arranged on the upper and lower sides of the annular metal plate and the upper and lower sides of the positioning ring.

[0014] The technical effects and advantages of the present utility model:

[0015] Positioning through-holes corresponding to the reserved bars at the top of the precast pipe pier are provided on the annular metal plate of the present utility model. The reserved bars at the top of the precast pipe pier are inserted into the positioning through-holes of the annular metal plate to achieve rapid straightening of the reserved bars with accurate straightening positions, and the reserved bars at the top of the precast pipe pier are limited and placed under the limitation of the annular metal plate, solving the problems of repeated positioning and back-and-forth bending and straightening of the reserved bars at the top of the precast pipe pier, improving work efficiency and reducing construction difficulty. Description of the Drawings

[0016] Figure 1 It is a schematic vertical structure diagram of the first embodiment of the present utility model.

[0017] Figure 2 It is a schematic main-view sectional structure diagram of the installation of the first embodiment of the present utility model.

[0018] Figure 3 It is a schematic top-view structure diagram of the installation of the first embodiment of the present utility model.

[0019] Figure 4 It is a schematic vertical structure diagram of the annular metal plate of the second embodiment of the present utility model.

[0020] Figure 5 It is a schematic vertical structure diagram of the installation of the second embodiment of the present utility model.

[0021] Figure 6 This is a schematic vertical structure diagram of the positioning ring in the second embodiment of the present utility model.

[0022] Figure 7 This is a schematic vertical structure diagram of the screw rod in the second embodiment of the present utility model.

[0023] In the figure: 1. Annular metal plate; 2. Positioning through hole; 3. Prefabricated pipe pier; 4. Reserved reinforcement; 5. Positioning ring; 501. First half ring; 502. Second half ring; 503. Bolt; 6. Connecting through hole; 7. Screw rod; 8. Nut; 9. Extension seat; 10. Sealing gasket. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0025] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0026] In the present utility model, unless otherwise clearly defined and limited, the terms "set", "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be a mechanical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0027] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality" means two or more, unless otherwise specifically defined.

[0028] The present utility model provides a rapid straightening and positioning device for the reserved reinforcement at the top of a precast pipe pier of an assembled bridge, as Figures 1-7 shown. It is mainly a construction device for rapidly straightening and positioning the reserved reinforcement at the top of the precast pipe pier during the splicing construction of the lower structure of the assembled bridge. The top of the precast pipe pier of the assembled bridge is to be spliced with the precast capping beam. The precast pipe pier 3 is filled with reserved reinforcement 4, and the reserved reinforcement 4 extends out of the top of the precast pipe pier 3. The precast capping beam is provided with reserved holes for docking with the reserved reinforcement 4 extending out of the top of the precast pipe pier 3.

[0029] Embodiment 1:

[0030] As Figures 1-3 shown: A rapid straightening and positioning device for the reserved reinforcement at the top of a precast pipe pier of an assembled bridge includes an annular metal plate 1, which is cut from a metal plate and uses a metal plate with a thickness of 1 - 2 cm. The inner diameter value of the annular metal plate 1 is the same as the inner diameter value of the precast pipe pier 3, reducing the usage area of the annular metal plate 1 and not affecting the subsequent internal treatment work of the precast pipe pier 3. The outer diameter value of the annular metal plate 1 is 8 - 12 cm larger than the outer diameter value of the precast pipe pier 3, that is, as Figure 3 shown: The width a of the surface of the annular metal plate 1 is 4 - 6 cm larger than the wall thickness of the precast pipe pier 3. The larger outer diameter value of the annular metal plate 1 facilitates operations such as moving and taking the annular metal plate 1, and is used for connecting with an external auxiliary mechanism for fixing or moving the annular metal plate 1; A number of positioning through holes 2 are provided along the thickness direction of the annular metal plate 1. The number of the positioning through holes 2 is arranged in an annular array centered on the axis of the annular metal plate 1, and the quantity is the same as the number of the reserved holes provided on the precast capping beam. The distance between the centers of two adjacent positioning through holes 2 is the same as the designed distance between two adjacent reserved holes on the precast capping beam, and the diameter value of the positioning through holes 2 is the same as the diameter value of the reserved holes of the precast capping beam;

[0031] During use, the annular metal plate 1 is inserted onto the reserved steel bars 4 at the top of the precast pipe pier 3 through the positioning through holes 2. Since the annular metal plate 1 is small in structure relative to the precast capping beam, several reserved steel bars 4 are inserted into several positioning through holes 2 to quickly straighten and position the reserved steel bars 4. Moreover, the presence of the annular metal plate 1 limits the position of the reserved steel bars 4, preventing the reserved steel bars 4 from being bent due to collision during placement. Also, the diameter of the positioning through holes 2 on the annular metal plate 1 is the same as that of the reserved holes of the precast capping beam. The reserved steel bars 4 are limited within the positioning through holes 2, ensuring that they can be smoothly inserted into the reserved holes of the precast capping beam subsequently. When the precast pipe pier 3 is spliced with the precast capping beam, the annular metal plate 1 is removed for assembly, and the annular metal plate 1 can be reused.

[0032] Embodiment 2:

[0033] As Figures 4-7 shown: According to the content described in the above Embodiment 1, it further includes a positioning ring 5. The positioning ring 5 includes a first half-ring 501, a second half-ring 502, and a bolt 503. One end of the first half-ring 501 is hinged to one end of the second half-ring 502. When the other ends are fitted, the first half-ring 501 and the second half-ring 502 form a circular structure. On the outer walls of the unhinged ends of the first half-ring 501 and the second half-ring 502, there are extension seats 9 integrally formed therewith. When the unhinged ends of the first half-ring 501 and the second half-ring 502 are fitted, the two extension seats 9 are also fitted. Thread holes are provided on the extension seats 9 for threaded connection of the bolt 503 to lock the unhinged ends of the first half-ring 501 and the second half-ring 502. The positioning ring 5 is used to sleeved on the outer wall of the precast pipe pier 3;

[0034] Sealing gaskets 10 are provided on the inner walls of the first half-ring 501 and the second half-ring 502. The sealing gaskets 10 include, but are not limited to, being bonded with glue, and the sealing gaskets 10 are made of rubber sealing gaskets, which are fitted to the outer wall of the precast pipe pier 3 to improve the installation stability of the positioning ring 5.

[0035] A number of connecting through holes 6 are provided along the thickness direction at the edges of the annular metal plate 1 and the positioning ring 5. When the positioning ring 5 is locked and the annular metal plate 1 and the positioning ring 5 are coaxially placed, a number of connecting through holes 6 on the annular metal plate 1 are coaxially corresponding to a number of connecting through holes 6 on the positioning ring 5;

[0036] It further includes a screw rod 7. The number of screw rods 7 is set to several and is the same as the number of connection through holes 6 on the annular metal plate 1. The annular metal plate 1 is inserted on the reserved rib 4. The positioning ring 5 is installed on the outer wall of the precast pipe pier 3. Several screw rods 7 are inserted between the two corresponding connection through holes 6 of the annular metal plate 1 and the positioning ring 5. There are four nuts 8 screwed on the screw rod 7. The four nuts 8 are respectively arranged on the upper and lower sides of the annular metal plate 1 and the upper and lower sides of the positioning ring 5, and are in contact with the annular metal plate 1 or the positioning ring 5, so as to realize the limit fixation of the screw rod 7. And with the stable installation of the positioning ring 5, the stable setting of the annular metal plate 1 is realized. Since the aperture of the reserved hole of the precast capping beam is larger than the aperture of the reserved rib 4, and the aperture of the positioning through hole 2 is larger than the aperture of the reserved rib 4, the positioning ring 5 and the screw rod 7 stably limit the annular metal plate 1, avoiding the annular metal plate 1 from falling off or sliding. And under the limit of the screw rod 7, the overall inclination and bending of several reserved ribs 4 under the limit of the annular metal plate 1 to one side are avoided, further improving the position limit accuracy of the reserved rib 4.

[0037] Both the annular metal plate 1 and the positioning ring 5 are subject to anti-rust treatment, including but not limited to spraying a metal anti-rust coating to play an anti-rust role.

[0038] This device can not only quickly straighten the reserved rib 4, but also accurately position the reserved rib 4 so as to quickly dock with the reserved hole of the precast capping beam. It can effectively solve the problems of repeated positioning and back-and-forth bending and straightening of the reserved rib 4 at the top of the precast pipe pier 3, improve the working efficiency, and reduce the construction difficulty.

[0039] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A rapid straightening and positioning device for the reserved reinforcement at the top of a precast pipe pier of an assembled bridge, characterized in that: It includes an annular metal plate (1), and a number of positioning through-holes (2) are provided in the annular metal plate (1) along its thickness direction. The number of the positioning through-holes (2) is arranged in an annular array centered on the axis of the annular metal plate (1), and is the same as that of the reserved ribs (4). The center distance between two adjacent positioning through-holes (2) is the same as the designed center distance between two adjacent reserved ribs (4). It further includes a positioning ring (5). The positioning ring (5) includes a first half-ring (501), a second half-ring (502) and a bolt (503). One end of the first half-ring (501) is hinged to one end of the second half-ring (502). When the other ends are fitted, the first half-ring (501) and the second half-ring (502) form a circular structure. Extension seats (9) are provided on the outer walls of the unhinged ends of the first half-ring (501) and the second half-ring (502), and the two extension seats (9) are fixedly connected by a bolt (503) in a threaded manner. A number of connecting through-holes (6) are provided in the edge of the annular metal plate (1) and in the positioning ring (5) along their thickness directions. When the positioning ring (5) is locked and the annular metal plate (1) and the positioning ring (5) are coaxially placed, a number of connecting through-holes (6) on the annular metal plate (1) are coaxially corresponding to a number of connecting through-holes (6) on the positioning ring (5). It further includes a screw rod (7). The number of the screw rods (7) is several and is the same as the number of the connecting through-holes (6) on the annular metal plate (1). The screw rod (7) is inserted between two corresponding connecting through-holes (6) of the annular metal plate (1) and the positioning ring (5). Four nuts (8) are screwed on the screw rod (7), and the four nuts (8) are respectively arranged on the upper and lower sides of the annular metal plate (1) and the upper and lower sides of the positioning ring (5).

2. The rapid straightening and positioning device for the reserved reinforcement at the top of the precast pipe pier of an assembled bridge according to claim 1, characterized in that: The inner diameter value of the annular metal plate (1) is the same as the inner diameter value of the precast pipe pier (3), and the outer diameter value of the annular metal plate (1) is larger than the outer diameter value of the precast pipe pier (3).

3. The rapid straightening and positioning device for the reserved bars at the top of the precast pipe pier of the assembled bridge according to claim 2, characterized in that: The outer diameter value of the annular metal plate (1) is 8 - 12 cm larger than the outer diameter value of the precast pipe pier (3).

4. The rapid straightening and positioning device for the reserved bars at the top of the precast pipe pier of an assembled bridge according to claim 1, characterized in that: The diameter value of the positioning through-hole (2) is the same as the diameter value of the reserved hole of the precast capping beam.

5. A rapid straightening and positioning device for the reserved reinforcement at the top of the precast pipe pier of an assembled bridge according to claim 1, characterized in that: Sealing gaskets (10) are provided on the inner walls of the first half-ring (501) and the second half-ring (502).

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