Bridge deck slab steel bar positioning tool, mold and construction method

Abstract

The application belongs to the technical field of building, and particularly relates to a bridge deck slab formwork which comprises a lower frame body, a first positioning opening and a first limiting clamping groove, the first positioning opening extends downward from the top surface of the lower frame body, a first limiting rod extending along the length direction of the lower frame body is arranged in the first limiting clamping groove, and the first limiting rod is located above one end of the bottom of the first positioning opening; an upper frame body is detachably arranged above the upper frame body, a second positioning opening and a second limiting clamping groove, the second positioning opening extends upward from the bottom surface of the upper frame body, a second limiting rod extending along the length direction of the upper frame body is arranged in the second limiting clamping groove, and the second limiting rod is located above one end of the top of the second positioning opening. The positioning tool is set as a split structure, and the first positioning opening and the first limiting rod and the second positioning opening and the second limiting rod are set to cooperate with each other, so that the positioning is accurate, the upper frame body and the lower frame body are separated from the steel bars, the operation is simple and convenient, the tool is convenient to disassemble, and the working efficiency is improved.

Description

Technical Field

[0001] This application belongs to the field of building technology, and in particular relates to a bridge deck formwork. Background Technology

[0002] In precast component factories, the application of precast concrete bridge decks is becoming increasingly widespread in prefabricated bridge engineering. To achieve effective connections between components on-site, bridge decks typically require reinforcing bars of a certain length extending from the sides or ends during precasting. Existing methods for positioning these reinforcing bars are difficult to implement, have poor accuracy, and severely impact work efficiency. For example, temporarily welding fixing rods to the formwork surface and fitting fixing rings onto these rods, then inserting the reinforcing bars into the fixing rings for positioning, is not only inaccurate but also makes it difficult to remove the positioned reinforcing bars from the fixing rings, requiring the removal of the fixing rings and further complicating the process. Summary of the Invention

[0003] To address the technical problem of inconvenience in removing reinforcing bars from fixing rings in existing technologies, this application provides a reinforcing bar positioning fixture and a bridge deck mold.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is a bridge deck reinforcement positioning tool, comprising:

[0005] The lower frame has a first positioning port and a first limiting slot. The first positioning port extends downward from the top surface of the lower frame. A first limiting rod extending along the length direction of the lower frame is provided in the first limiting slot. The first limiting rod is located above one end of the bottom of the first positioning port.

[0006] The upper frame is detachably installed on top of the upper frame. The second positioning port extends upward from the bottom surface of the upper frame. The second limiting slot is provided with a second limiting rod extending along the length direction of the upper frame. The second limiting rod is located above one of the top ends of the second positioning port.

[0007] In some embodiments, the width of the first positioning port gradually increases from bottom to top, and the width of the second positioning port gradually increases from top to bottom.

[0008] In some embodiments, both the upper frame and the lower frame are fixed with corresponding connecting plates, and the upper frame and the lower frame are detachably connected through the connecting plates.

[0009] In some embodiments, the connecting plate includes a limiting plate and a fixing plate, the first limiting slot and the second limiting slot are disposed on the limiting plate, and the corresponding fixing plates on the upper frame and the lower frame are detachably connected by bolts.

[0010] In some embodiments, a mounting element is also included, which is mounted on the bottom of the lower frame for connecting the lower frame to the mold.

[0011] In some embodiments, the mounting component includes a connecting portion connected to the lower frame and a mounting portion connected to the mold, the mounting portion being disposed below the connecting portion.

[0012] The present invention also provides a bridge deck mold, including the above-mentioned tooling, and further including a bottom mold and a side mold. The side mold is detachably connected to the bottom mold, and the side mold is provided with positioning holes for positioning reinforcing bars. The tooling is disposed on the outside of the side mold.

[0013] In some embodiments, a tie rod is further included, the two ends of which are respectively connected to two oppositely arranged side molds.

[0014] In some embodiments, the tooling is detachably connected to the side end face of the bottom mold via an mounting component.

[0015] The present invention also provides a construction method for bridge deck molds, comprising the following steps:

[0016] (1) Install the side mold on the bottom mold, and install the lower frame of the tooling on the edge of the bottom mold, and install the upper frame on top of the lower frame;

[0017] (2) Install the reinforcing bars through the positioning holes on the side formwork, with one end of the reinforcing bar protruding from the side formwork passing through the first positioning hole on the lower frame and the second positioning hole on the upper frame;

[0018] (3) Insert the first limiting rod into the first limiting slot. The first limiting rod is located above the reinforcing bar in the first positioning port and abuts against the reinforcing bar. Insert the second limiting rod into the second limiting slot. The second limiting rod is located above the reinforcing bar in the first positioning port.

[0019] (4) Tie the first limiting rod to the steel bar in the first positioning port and tie the second limiting rod to the steel bar in the second positioning port;

[0020] (5) Pour concrete into the mold;

[0021] (6) After the concrete has cured, release the binding of the reinforcing bars with the first and second limiting rods, release the connection between the upper and lower frame supports, lift the upper frame upwards to separate the upper frame from the reinforcing bars and the lower frame; remove the first limiting rod, dismantle the connection between the lower frame and the bottom formwork, and remove the reinforcing bars from the first positioning opening.

[0022] Beneficial effects: The present invention sets the positioning fixture as a split structure of a detachable upper frame and a lower frame, and sets a first positioning port and a first limiting rod and a second positioning port and a second positioning rod that cooperate with each other. Not only is the positioning accurate, but the operation of separating the upper frame and the lower frame from the steel bars after the casting is completed is simple and convenient. The fixture is easy to dismantle, which helps to improve work efficiency. Attached Figure Description

[0023] Figure 1 Front view of the positioning tooling;

[0024] Figure 2 A three-dimensional view of the positioning tooling and template assembly structure;

[0025] Figure 3 for Figure 2 Enlarged view of the structure at point A in the middle;

[0026] Figure 4 Side view of the assembly structure of the positioning tooling and template;

[0027] Figure 5 This is a schematic diagram of a mold structure with tie rods.

[0028] In the figure: 1. Lower frame, 11. First positioning port, 12. First limiting slot, 13. First limiting rod, 2. Upper frame, 21. Second positioning port, 22. Second limiting slot, 23. Second limiting rod, 3. Connecting plate, 31. Limiting plate, 32. Fixing plate, 4. Mounting component, 41. Mounting part, 42. Connecting part, 5. Bottom mold, 6. Side mold, 61. Positioning hole, 7. Tie rod, 100. Reinforcing bar. Detailed Implementation

[0029] The present application will be further described below with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without making creative changes are within the protection scope of the present application.

[0030] like Figures 1-4As shown, the bridge deck rebar positioning fixture provided in this application includes an upper frame 2 and a lower frame 1. The lower frame 1 has a first positioning port 11 and a first limiting groove 12. The first positioning port 11 extends downward from the top surface of the lower frame 1. The first limiting groove 12 is provided with a first limiting rod 13 extending along the length direction of the lower frame 1. The first limiting rod 13 is located above the bottom end of the first positioning port 11. The upper frame 2 is detachably installed on the upper frame 2. It has a second positioning port 21 and a second limiting groove 22. The second positioning port 21 extends upward from the bottom surface of the upper frame 2. The second limiting groove 22 is provided with a second limiting rod 23 extending along the length direction of the upper frame 2. The second limiting rod 23 is located above the top end of the second positioning port 21.

[0031] like Figure 2 As shown, during the precast casting of the bridge deck, the lower frame 1 is installed on the bottom mold 5 of the mold, and the upper frame 2 is installed on the lower frame 1. The exposed reinforcing bars 100 on the mold are passed through the corresponding first positioning port 11 or second positioning port 21. The first limiting rod 13 is installed in the first limiting slot 12 and is positioned against the reinforcing bar 100 in the first positioning port 11, thus positioning the reinforcing bar 100 at the bottom end of the first positioning port 11. The second limiting rod 23 is installed in the second limiting slot 22 and is positioned against the reinforcing bar 100 in the second positioning port 21. To prevent the reinforcing bar 100 from shifting during casting, the first limiting rod 13 and the reinforcing bar 100 in the first positioning port 11 can be tied together, and the second limiting rod 23 and the reinforcing bar 100 in the second positioning port 21 can be tied together, thus fixing the reinforcing bar 100 at the top end of the second positioning port 21. After the concrete is poured and cured, untie the reinforcing bars 100 in the second limiting rod 23 and the second positioning port 21, and disconnect the connection between the upper frame 2 and the lower frame 1. Since the second positioning port 21 extends upward from the bottom surface of the upper frame 2, that is, the opening of the second positioning port 21 is located at the bottom end face of the upper frame 2, the reinforcing bars 100 can be removed from the second positioning port 21 by lifting the upper frame 2 upward, that is, the upper frame 2 can be dismantled. Disconnect the lower frame 1 from the bottom formwork 5 and remove the first limiting rod 13. Since the first positioning port 11 extends downward from the top surface of the lower frame 1, that is, the opening of the first positioning port 11 is located at the top surface of the lower frame 1, the lower frame 1 can be disengaged from the reinforcing bars 100 in the first positioning port 11 by tilting the lower frame 1, or the lower frame 1 can be disengaged from the reinforcing bars 100 in the first positioning port 11 by moving the lower frame 1 down from the edge of the bottom formwork 5. The positioning fixture of the present invention adopts a split upper frame 2 and lower frame 1 structure, which eliminates the need to move the positioning fixture along the length of the reinforcing bar 100 and remove it from one end of the reinforcing bar 100. The removal operation is simple and convenient, which helps to improve production efficiency.

[0032] like Figure 1 , 3 As shown in Figure 4, to facilitate the engagement and disengagement of the reinforcing bar 100 with the first positioning port 11 and the second positioning port 21, in some embodiments, the width of the first positioning port 11 gradually increases from bottom to top, and the width of the second positioning port 21 gradually increases from top to bottom. The lower end of the first positioning port 11 matches the diameter of the reinforcing bar 100, while the upper opening is larger than the diameter of the reinforcing bar 100. The upper end of the second positioning port 21 matches the diameter of the reinforcing bar 100, while the lower opening is larger than the diameter of the reinforcing bar 100. This allows the reinforcing bar 100 to be inserted from the larger opening, facilitating engagement. During disassembly, as the first positioning port 11 and the second positioning port 21 gradually increase in size towards the opening, the reinforcing bar 100, after shifting towards the opening within the first positioning port 11 or the second positioning port 21, increases the distance between it and the first positioning port 11 and the second positioning port 21, preventing jamming and facilitating the separation of the reinforcing bar 100 from the upper frame 2 or the lower frame 1.

[0033] like Figure 1 , 3 As shown in Figure 4, in order to facilitate the connection between the upper frame 2 and the lower frame 1, in some embodiments, a corresponding connecting plate 3 is fixed on both the upper frame 2 and the lower frame 1, and the upper frame 2 and the lower frame 1 are detachably connected through the connecting plate 3.

[0034] Specifically, such as Figure 1 , 3 As shown in Figure 4, the connecting plate 3 includes a limiting plate 31 and a fixing plate 32, wherein the limiting plate 31 and the fixing plate 32 extend vertically from the surfaces of the upper frame 2 and the lower frame 1. Multiple connecting plates 3 are provided on the upper frame 2 and the lower frame 1 along their length. The limiting plate 31 and the fixing plate 32 are connected in an L-shape. The fixing plate 32 on the upper frame 2 and the fixing plate 32 on the lower frame 1 are arranged opposite to each other. The first limiting slot 12 and the second limiting slot 22 are provided on the limiting plate 31. The corresponding fixing plates 32 on the upper frame 2 and the lower frame 1 are detachably connected by bolts.

[0035] In addition, such as Figure 2 and 3 As shown, in order to facilitate the installation and removal of the first limiting rod 13 and the second limiting rod 23, in some embodiments, the first limiting slot 12 and the second limiting slot 22 are open on the side facing the limiting plate 31. Thus, when installing the first limiting rod 13 and the second limiting rod 23, it is only necessary to push the first limiting rod 13 and the second limiting rod 23 as a whole into the opening of the first limiting slot 12 and the second limiting slot 22. It is not necessary to insert the first limiting rod 13 and the second limiting rod 23 into the first limiting slot 12 and the second limiting slot 22 sequentially from one end, making installation and removal more convenient.

[0036] like Figure 1 , 3 As shown in Figure 4, in order to facilitate the connection between the lower frame 1 and the mold, in some embodiments, a mounting component 4 is also included. The mounting component 4 is installed at the bottom of the lower frame 1 and is used to connect the lower frame 1 and the mold.

[0037] In some embodiments, such as Figure 1 , 3 As shown in Figure 4, the mounting component 4 includes a connecting part 42 connected to the lower frame 1 and a mounting part 41 connected to the mold. The mounting part 41 is located below the connecting part 42. Specifically, in some embodiments, the mounting part 41 and the connecting part 42 are perpendicular to each other, and the connecting part 42 is attached to the bottom surface of the lower frame 1 and detachably connected by bolts. The mounting part 41 is detachably connected to the side end face of the bottom mold 5 of the mold by bolts, thereby suspending the tooling on the mold. The connection between the mounting part 41 and the side end face of the mold is removed, and the connection between the first limiting rod 13 and the reinforcing bar 100 is also removed. The lower frame 1 falls off naturally under the action of gravity, which is convenient for disassembly.

[0038] The present invention also provides a bridge deck mold, such as Figure 2 As shown, the fixture includes the aforementioned tooling, as well as a bottom mold 5 and a side mold 6. The side mold 6 is detachably connected to the bottom mold 5. The side mold 6 is provided with positioning holes 61 for positioning the reinforcing bars 100. The tooling is located on the outside of the side mold 6. Figure 2 As shown, four side molds 6 are arranged in pairs to form a rectangular frame. Specifically, the side molds 6 can be positioned on the bottom mold 5 using positioning pins and then fixed with bolts to reduce the number of bolts used to connect the side molds 6 and the bottom mold 5, thus reducing the workload of disassembly and assembly. Two of the opposing side molds 6 have circular positioning holes 61, and the other two opposing side molds 6 have U-shaped positioning holes 61 for initial positioning of steel bars 100 of different shapes. Corrugated pipe positioning holes 61 are provided on one pair of opposing side molds 6 to position the corrugated pipes, thereby forming a hollow channel inside the bridge deck after pouring. Positioning fixtures are installed on the outside of the four side molds 6 to accurately position the exposed steel bars 100. To improve the strength of the side molds 6, in some embodiments, reinforcing plates are provided on the outer surface of the side molds 6.

[0039] like Figure 5 As shown, to avoid increased pressure on the side molds during pouring and deformation of the side molds 6 due to cement expansion, in some embodiments, a tie rod 7 is also included. The two ends of the tie rod 7 are respectively connected to two oppositely arranged side molds 6. The tie rod 7 can balance the pressure of the castable material on the side molds 6, preventing deformation of the side molds 6.

[0040] like Figure 2 and3 As shown, in order to facilitate the detachment of the lower frame 1 of the positioning fixture from the mold, in some embodiments, the fixture is detachably connected to the side end face of the bottom mold 5 via a mounting member 4. The mounting member 4 can suspend and fix the lower frame 1 to the side end face of the bottom mold 5, making the lower frame 1 easy to disassemble.

[0041] The construction method for prefabricating bridge decks using the aforementioned molds includes the following steps:

[0042] (1) Install the side mold 6 on the bottom mold 5 by means of positioning pins and bolts, and install the lower frame 1 of the tooling on the edge of the bottom mold 5, and install the upper frame 2 above the lower frame 1; specifically, the lower frame 1 is suspended on the end face of the side of the bottom mold 5 by means of the mounting part 4.

[0043] (2) Install the reinforcing bar 100 through the positioning hole 61 on the side formwork 6. One end of the reinforcing bar 100 protruding from the side formwork 6 passes through the first positioning hole 11 on the corresponding lower frame 1 and the second positioning hole 21 on the upper frame 2.

[0044] (3) Insert the first limiting rod 13 into the first limiting slot 12. The first limiting rod 13 is located above the steel bar 100 in the first positioning port 11 and abuts against the steel bar 100. Insert the second limiting rod 23 into the second limiting slot 22. The second limiting rod 23 is located above the steel bar 100 in the first positioning port 11.

[0045] (4) Tie the first limiting rod 13 to the steel bar 100 in the first positioning port 11 and tie the second limiting rod 23 to the steel bar 100 in the second positioning port 21.

[0046] (5) Pour concrete into the mold;

[0047] (6) After the concrete has cured, release the binding of the reinforcing bar 100 with the first limiting rod 13 and the second limiting rod 23, release the connection between the upper frame 2 and the lower frame 1 support, lift the upper frame 2 upward to separate the upper frame 2 from the reinforcing bar 100 and the lower frame 1; remove the first limiting rod 13, remove the connection between the lower frame 1 and the bottom formwork 5 and remove the reinforcing bar 100 from the first positioning port 11.

[0048] While the disclosure is as stated above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the scope of protection of this application.

Claims

1. A tooling for positioning reinforcing bars in bridge deck panels, characterized in that, include The lower frame (1) has a first positioning port (11) and a first limiting slot (12). The first positioning port (11) extends downward from the top surface of the lower frame (1). The first limiting slot (12) is provided with a first limiting rod (13) extending along the length direction of the lower frame (1). The first limiting rod (13) is located above the bottom end of the first positioning port (11). The upper frame (2) is detachably installed on the upper frame (2), with a second positioning port (21) and a second limiting slot (22). The second positioning port (21) extends upward from the bottom surface of the upper frame (2), and a second limiting rod (23) extending along the length direction of the upper frame (2) is provided in the second limiting slot (22). The second limiting rod (23) is located above the top end of the second positioning port (21).

2. The bridge deck reinforcement positioning fixture according to any one of claims 1, characterized in that, The width of the first positioning port (11) gradually increases from bottom to top, and the width of the second positioning port (21) gradually increases from top to bottom.

3. The bridge deck reinforcement positioning fixture according to claim 1 or 2, characterized in that, Both the upper frame (2) and the lower frame (1) are fixed with corresponding connecting plates (3), and the upper frame (2) and the lower frame (1) are detachably connected through the connecting plates (3).

4. The bridge deck reinforcement positioning fixture according to claim 3, characterized in that, The connecting plate (3) includes a limiting plate (31) and a fixing plate (32). The first limiting slot (12) and the second limiting slot (22) are disposed on the limiting plate (31). The corresponding fixing plates (32) on the upper frame (2) and the lower frame (1) are detachably connected by bolts.

5. The bridge deck reinforcement positioning fixture according to claim 1, characterized in that, It also includes an installation component (4), which is installed at the bottom of the lower frame (1) for connecting the lower frame (1) to the mold.

6. The bridge deck reinforcement positioning fixture according to claim 5, characterized in that, The mounting component (4) includes a connecting part (42) connected to the lower frame (1) and a mounting part (41) connected to the mold, wherein the mounting part (41) is located below the connecting part (42).

7. A bridge deck mold, characterized in that, The tooling includes any one of claims 1 to 6, and further includes a bottom mold (5) and a side mold (6), wherein the side mold (6) is detachably connected to the bottom mold (5), and the side mold (6) is provided with positioning holes (61) for positioning the reinforcing bars (100), and the tooling is provided on the outside of the side mold (6).

8. The bridge deck mold according to claim 7, characterized in that, It also includes a tie rod (7), the two ends of which are connected to two oppositely arranged side molds (6).

9. The bridge deck mold according to claim 7 or 8, characterized in that, The tooling is detachably connected to the side end face of the bottom mold (5) via the mounting part (4).

10. The construction method of the bridge deck mold according to claims 7-9, characterized in that, Includes the following steps: (1) Install the side mold (6) on the bottom mold (5), and install the lower frame (1) of the tooling on the edge of the bottom mold (5), and install the upper frame (2) above the lower frame (1); (2) Install the reinforcing bar (100) through the positioning hole (61) on the side formwork (6). The end of the reinforcing bar (100) protruding from the side formwork (6) passes through the first positioning hole (11) on the lower frame (1) and the second positioning hole (21) on the upper frame (2). (3) Insert the first limiting rod (13) into the first limiting slot (12). The first limiting rod (13) is located above the steel bar (100) in the first positioning port (11) and abuts against the steel bar (100). Insert the second limiting rod (23) into the second limiting slot (22). The second limiting rod (23) is located above the steel bar (100) in the first positioning port (11). (4) Tie the first limiting rod (13) to the steel bar (100) in the first positioning port (11) and tie the second limiting rod (23) to the steel bar (100) in the second positioning port (21); (5) Pour concrete into the mold; (6) After the concrete has cured, release the binding of the reinforcing bar (100) with the first limiting rod (13) and the second limiting rod (23), release the connection between the upper frame (2) and the lower frame (1) support, lift the upper frame (2) upward to separate the upper frame (2) from the reinforcing bar (100) and the lower frame (1); remove the first limiting rod (13), remove the connection between the lower frame (1) and the bottom formwork (5) and release the reinforcing bar (100) from the first positioning port (11).

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