PBL shear key for quickly installing and positioning reinforcing steel bars

Abstract

The utility model provides a PBL shear key for quickly installing and positioning reinforcing steel bars, and aims to solve the technical problem that the construction and installation time of the existing PBL shear key is long. The PBL shear key comprises a beam body; the perforated plates are arranged at the top of the beam body at intervals, each perforated plate is provided with a plurality of holes, all the holes in the adjacent perforated plates correspond to one another in position, and steel bars are arranged in the corresponding holes; wherein the hole comprises an arc-shaped groove and a rectangular groove, the lower end of the rectangular groove is communicated with the arc-shaped groove, the upper end of the rectangular groove penetrates through the top of the perforated plate, the width of the rectangular groove is smaller than the diameter of the arc-shaped groove, and a step is formed at the communicated position of the rectangular groove and the arc-shaped groove. The reinforcing steel bar can be quickly and easily put down and positioned from the opening above the perforated plate, the installation is convenient, the reinforcing steel bar is easier to construct and position, and the construction efficiency and quality are effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, in particular to a PBL shear key for quickly installing and positioning steel bars. Background Art

[0002] With the vigorous development of highways in my country, a large number of steel-structured bridges have been adopted by Chinese designers. However, the deck durability of pure steel bridges is poor and the operation cycle is short. Therefore, designers have redesigned a new type of bridge, the steel-concrete composite beam bridge, based on the disadvantages of steel bridges. Among them, the PBL shear key is an important component of the steel-concrete composite beam. Its main function is to better combine concrete and steel, and give full play to the compressive properties of concrete and the tensile properties of steel beams.

[0003] In the prior art, such as Figure 1 As shown, when installing transverse reinforcement, it can only be installed from the openings on the side of the PBL perforated plate, which is not convenient for installation. Not only does it take a long time to install, but it is also easy to make mistakes in positioning the reinforcement. Moreover, when the bridge is wide or curved, the transverse reinforcement needs to be cut into several sections and then re-welded after crossing the PBL perforated plate, which not only takes a long time to install, but also affects the integrity of the reinforcement. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the utility model is to provide a PBL shear key for quickly installing and positioning steel bars, which solves the technical problem of the long construction and installation time of the existing PBL shear key.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A PBL shear key for quickly installing and positioning steel bars comprises: a beam body; a plurality of perforated plates arranged at intervals on the top of the beam body, each perforated plate having a plurality of openings, all openings on adjacent perforated plates being located at corresponding positions and steel bars being arranged in the corresponding openings; wherein the openings comprise an arcuate groove and a rectangular groove, the lower end of the rectangular groove being connected to the arcuate groove, the upper end of the rectangular groove passing through the top of the perforated plate, the width of the rectangular groove being smaller than the diameter of the arcuate groove, and a step being formed at the connection between the rectangular groove and the arcuate groove.

[0007] The holes on the perforated plate of the utility model are formed by arc grooves and rectangular grooves, so that the steel bars can be quickly and easily placed from the opening above the perforated plate, which is convenient for installation and effectively saves construction time. In particular, when the beam body is wide or the beam body is located on a curve, it is not necessary to cut the steel bars into several sections and then cross the perforated plate and then re-weld them, thereby ensuring the integrity of the steel bars and the force integrity of the bridge deck. The utility model redesigns the PBL shear key to make it easier to construct and position the transverse steel bars, thereby improving construction efficiency and quality.

[0008] Optionally, the central axes of the arc-shaped groove and the rectangular groove coincide with each other, and the two steps are symmetrically arranged about the central axis.

[0009] Optionally, the arc groove includes a horizontal portion and an arc portion formed at the lower end of the horizontal portion, the arc portion is arranged close to the lower part of the perforated plate, the lower end of the horizontal portion is connected to the arc portion, and the upper end is connected to the rectangular groove. The arc portion is arranged so that the steel bar can be accurately positioned at the center of the perforated hole.

[0010] Optionally, the arc portion is a semicircle, and the diameter of the horizontal portion is equal to the diameter of the semicircle.

[0011] Optionally, the height of the rectangular groove is greater than the height of the horizontal portion.

[0012] Optionally, the height h1 of the rectangular groove is 27.5 mm, and the height h2 of the horizontal portion is 22.5 mm.

[0013] Optionally, the width B of the rectangular groove is 24 mm, and the diameter d of the arc groove is 45 mm.

[0014] Optionally, the height of the perforated plate is 100 mm, and the thickness T of the perforated plate is 12 mm.

[0015] Optionally, the gap X between the central axes of two adjacent openings is 120 mm.

[0016] Optionally, the distance Y between the central axes of two adjacent perforated plates is 250 mm.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The holes on the perforated plate of the utility model are formed by arc grooves and rectangular grooves, so that the steel bars can be quickly and easily placed from the opening above the perforated plate, which is convenient for installation and effectively saves construction time. In particular, when the beam body is wide or the beam body is located on a curve, it is not necessary to cut the steel bars into several sections and then cross the perforated plate and then re-weld them, thereby ensuring the integrity of the steel bars and the force integrity of the bridge deck. The utility model redesigns the PBL shear key to make it easier to construct and position the transverse steel bars, thereby improving construction efficiency and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1It is a structural schematic diagram of the prior art.

[0021] Figure 2 It is the front view of the utility model.

[0022] Figure 3 It is a side view of the utility model.

[0023] Figure 4 for Figure 3 A magnified view of the structure in the middle.

[0024] Figure 5 This is a top view of the utility model in a usage state.

[0025] Figure numerals: 1, beam body; 2, perforated plate; 2a, opening; 21, arc groove; 211, horizontal portion; 212, arc portion; 22, rectangular groove; 23, step; 3, steel bar; H, height of the perforated plate; T, thickness of the perforated plate; B, width of the rectangular groove; h1, height of the rectangular groove; d, diameter of the arc groove; h2, height of the horizontal portion. DETAILED DESCRIPTION

[0026] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0027] In the description of the embodiments of the present utility model application, it needs to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", "end", "side", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present utility model application.

[0028] In the embodiments of the present utility model application, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model application can be understood according to the specific circumstances.

[0029] In the embodiments of the utility model application, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being "above", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0030] The disclosure below provides many different embodiments or examples for realizing different structures of the embodiments of the utility model application. In order to simplify the disclosure of the embodiments of the utility model application, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the embodiments of the utility model application. In addition, the embodiments of the utility model application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0031] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0032] like Figure 2~Figure 4 As shown, the embodiment of the utility model application provides a PBL shear key for quickly installing and positioning steel bars, including a beam body 1 and a plurality of perforated plates 2 arranged on the top of the beam body 1, each perforated plate 2 has a plurality of openings 2a for steel bars 3 to pass through, all the openings 2a on adjacent perforated plates 2 are arranged in a one-to-one correspondence, and the steel bars 3 pass through the corresponding openings 2a, that is, the centers of the corresponding openings 2a of the plurality of perforated plates 2 are all located on the same central axis, and the steel bars 3 are located on the central axis. The diameter of the steel bars 3 is adapted to the size of the openings.

[0033] Furthermore, the opening 2a includes an arc groove 21 and a rectangular groove 22 located above the arc groove 21 and connected to the arc groove 21. The width of the rectangular groove 22 is smaller than the diameter of the arc groove 21. The upper end of the rectangular groove 22 passes through the top of the opening plate 2, and the lower end of the rectangular groove 22 is connected to the arc groove 21. Two steps 23 are formed at the connection between the rectangular groove 22 and the arc groove 21.

[0034] Optionally, the central axes of the arc-shaped groove 21 and the rectangular groove 22 coincide with each other, and the two steps 23 are symmetrically arranged about the central axes.

[0035] Optionally, the arc groove 21 includes a horizontal portion 211 and an arc portion 212 formed at the lower end of the horizontal portion 211, the arc portion 212 is arranged near the lower part of the perforated plate 2, the lower end of the horizontal portion 211 is connected to the arc portion 212, the upper end is connected to the rectangular groove 22, and the step 23 is located at the upper end of the horizontal portion 211. The arc portion is conducive to the accurate positioning of the steel bar.

[0036] Optionally, the arc portion 212 is a semicircle, and the diameter of the horizontal portion 211 is equal to the diameter of the semicircle.

[0037] Optionally, the height h1 of the rectangular groove is greater than the height h2 of the horizontal portion. Preferably, the height h1 of the rectangular groove is 27.5 mm, and the height h2 of the horizontal portion is 22.5 mm.

[0038] Optionally, the width B of the rectangular groove is 24 mm, and the diameter d of the arc groove is 45 mm, that is, the width of the horizontal portion is 45 mm, and the diameter of the arc portion is 45 mm. The diameter of the steel bar 3 is smaller than the width of the rectangular groove.

[0039] Optionally, the gap X between the central axes of two adjacent openings 2a is 120 mm.

[0040] Optionally, the height H of the perforated plate is 100 mm, and the thickness T of the perforated plate is 12 mm.

[0041] Optionally, the distance Y between the central axes of two adjacent perforated plates 2 is 200 mm to 250 mm, preferably 250 mm.

[0042] As an implementation scenario, in this scenario, refer to Figure 2 As shown, the perforated plate 2 is welded to the top of the beam body 1 at intervals along the transverse direction of the beam body 1 (the length direction of the steel bars 3), Figure 3As shown, each perforated plate 2 is arranged longitudinally along the beam body 1. After the perforated plates 2 are installed, the multiple openings 2a on the multiple perforated plates 2 correspond to each other one by one, and the center lines of the openings 2a are parallel to each other, that is, multiple groups of openings for the steel bars 3 to pass through are formed on the multiple perforated plates 2, and the openings on the same group of openings are located on the same horizontal center axis. During construction, steel bars 3 are placed in each opening group, and the steel bars 3 are perpendicular to the perforated plates 2. The steel bars 3 can be placed in the bottom of the arc groove 21 through the upper end of the rectangular groove 22. After the steel bars 3 are lowered and positioned, concrete pouring can be carried out.

[0043] As an implementation scenario, Figure 5 As shown, 7 perforated plates 2 are arranged on the top of the beam body, and the 7 perforated plates 2 are evenly spaced along the Y-axis direction of the beam body, and each perforated plate 2 is arranged horizontally along the X-axis of the beam body. A number of steel bars 3 are arranged on the 7 perforated plates 2, and the steel bars 3 are arranged at equal intervals, and the steel bars 3 are perpendicular to the perforated plates 2. Specifically, a number of openings are evenly spaced above each perforated plate 2, and all the opening positions on adjacent perforated plates 2 are arranged one by one, and the steel bars 3 are positioned by being lowered from above the openings of the perforated plates 2.

[0044] The opening 2a of the utility model is formed by the arc groove 21 and the rectangular groove 22, so that the steel bar can be quickly and easily lowered from the opening above the opening plate 2 and positioned at the bottom of the arc groove 21, effectively saving construction time. In particular, when the beam body is wide or the beam body is located on a curve, it is unnecessary to cut the steel bar into several sections and then cross the opening plate 2 and then re-weld it, so as to ensure the integrity of the steel bar and the force integrity of the bridge deck.

[0045] Parts not described in detail in this embodiment are well-known techniques in the art.

[0046] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A PBL shear key for quickly installing and positioning steel bars, characterized in that: include: beam body; A plurality of perforated plates are arranged at intervals on the top of the beam body, each perforated plate has a plurality of openings, all openings on adjacent perforated plates are located at corresponding positions and steel bars are arranged in the corresponding openings; Among them, the opening includes an arc groove and a rectangular groove, the lower end of the rectangular groove is connected to the arc groove, the upper end of the rectangular groove passes through the top of the opening plate, the width of the rectangular groove is smaller than the diameter of the arc groove, and a step is formed at the connection between the rectangular groove and the arc groove.

2. A PBL shear key for quickly installing and positioning steel bars according to claim 1, characterized in that: The central axes of the arc-shaped groove and the rectangular groove coincide with each other, and the two steps are symmetrically arranged on the central axis.

3. A PBL shear key for quickly installing and positioning steel bars according to claim 1, characterized in that: The arc-shaped groove includes a horizontal portion and an arc portion formed at the lower end of the horizontal portion, the upper end of the horizontal portion is connected to the rectangular groove, and the arc portion is arranged close to the lower part of the perforated plate.

4. A PBL shear key for quickly installing and positioning steel bars according to claim 3, characterized in that: The arc portion is semicircular, and the diameter of the horizontal portion is equal to the diameter of the semicircle.

5. A PBL shear key for quickly installing and positioning steel bars according to claim 3, characterized in that: The height of the rectangular groove is greater than the height of the horizontal portion.

6. A PBL shear key for quickly installing and positioning steel bars according to claim 5, characterized in that: The height h1 of the rectangular groove is 27.5 mm, and the height h2 of the horizontal portion is 22.5 mm.

7. A PBL shear key for quickly installing and positioning steel bars according to claim 1, characterized in that: The width B of the rectangular groove is 24 mm, and the diameter d of the arc groove is 45 mm.

8. A PBL shear key for quickly installing and positioning steel bars according to claim 1, characterized in that: The height of the perforated plate is 100 mm, and the thickness T of the perforated plate is 12 mm.

9. A PBL shear key for quickly installing and positioning steel bars according to claim 1, characterized in that: The gap X between the central axes of two adjacent openings is 120 mm.

10. A PBL shear key for quickly installing and positioning steel bars according to claim 1, characterized in that: The distance Y between the central axes of two adjacent perforated plates is 250 mm.

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