Limiting device and bridge

Abstract

The utility model provides a limiting device and a bridge. The limiting device comprises a first anchoring part, a second anchoring part, a first buckling part and a second buckling part, the first anchoring part is located above the second anchoring part, the upper end of the first buckling part is connected with the first anchoring part, a first hook part is arranged at the lower end of the first buckling part, a second hook part is arranged at the upper end of the second buckling part, and the second anchoring part is connected with the second buckling part. The lower end of the second fastener is connected with the second anchoring part, and the second hook part is connected with the first hook part in a buckled mode. According to the utility model, the limiting device is provided with the two hook parts, so that the first fastener and the second fastener are connected in a fastening manner, and the installation is simpler and quicker; whether the elastic deformation amount of the spring is matched with the horizontal impact force or not does not need to be considered during design and processing, the buckling mode can well adapt to the flood impact force, and design and processing are simplified.

Description

Technical Field

[0001] This utility model relates to the field of highway bridge technology, and in particular to a limiting device and a bridge. Background Technology

[0002] A flood-prone bridge is a bridge whose deck is allowed to be submerged for a short period during flood season. The "General Specifications for Design of Highway Bridges and Culverts" (JTGD60-2015) stipulates that flood-prone bridges can be built on Class III and Class IV highways where limited traffic interruption is permissible. A flood-prone bridge consists of an abutment and a slab bridge mounted on the abutment. The slab bridge is designed to allow floodwater to overflow the bridge deck, thus requiring it to withstand the impact of the floodwater flow and experience greater horizontal forces. To prevent the slab bridge from overturning, downstream horizontal displacement, and buoyancy failure, restraints are needed between the slab bridge and the abutment.

[0003] Existing limiting devices, such as the flood-resistant anchoring structure and construction method for a low-slung T-beam flooded bridge disclosed in patent publication number CN113699872A, use vertically installed anchor rods connected between the slab bridge and the abutment cap. The anchor rods have springs to adapt to horizontal impact forces. However, the limiting device using anchor rods is relatively complex to install, has high requirements for the design and processing of the springs, and is not easy to disassemble. Utility Model Content

[0004] The purpose of this utility model is to provide a limiting device and a bridge that are easy to process and install.

[0005] The technical solution of this utility model is: a limiting device, including a first anchor, a second anchor, a first fastener and a second fastener, the first anchor being located above the second anchor, the upper end of the first fastener being connected to the first anchor, the lower end of the first fastener being provided with a first hook, the upper end of the second fastener being provided with a second hook, the lower end of the second fastener being connected to the second anchor, and the second hook being engaged with the first hook.

[0006] In the above scheme, the limiting device is designed with two hooks, so that the first fastener and the second fastener are connected by a snap-fit ​​method, so that the first fastener and the second fastener limit each other in the horizontal direction, and the snap-fit ​​method is simpler and faster to install; when designing and processing, there is no need to consider whether the elastic deformation of the spring is matched with the horizontal impact force, and the snap-fit ​​method can adapt well to the impact force of flood, simplifying the design and processing.

[0007] Preferably, the first fastener includes a first plate and a second plate, the first plate and a first hook are connected to both ends of the second plate, and the first plate is connected to a first anchor.

[0008] Preferably, the first plate and the first hook are located on the same side of the second plate.

[0009] Preferably, the first hook is a plate-shaped structure parallel to the first plate, and the first hook extends toward the direction of the second fastener.

[0010] Preferably, the second fastener includes a third plate and a fourth plate, the third plate and the second hook are connected to both ends of the fourth plate, and the third plate is connected to the second anchor.

[0011] Preferably, the third plate and the second hook are located on the same side of the fourth plate.

[0012] Preferably, the second hook is a plate-shaped structure parallel to the third plate, and the second hook extends toward the first fastener.

[0013] Preferably, the first anchor includes a fifth plate and a first anchor, the lower surface of the fifth plate is connected to the first fastener, and the upper surface of the fifth plate is connected to the first anchor.

[0014] Preferably, the second anchor includes a sixth plate and a second anchor, the upper surface of the sixth plate is connected to the second fastener, and the lower surface of the sixth plate is connected to the second anchor.

[0015] This utility model also provides a bridge, which includes a cap, a slab bridge disposed above the cap, and the aforementioned limiting device. The first anchor of the limiting device is embedded in the slab bridge, the second anchor of the limiting device is embedded in the cap, and the first fastener and the second fastener are fastened between the slab bridge and the cap.

[0016] Compared with related technologies, the beneficial effects of this utility model are as follows:

[0017] 1. The limiting device is designed with two hooks, so that the first fastener and the second fastener are connected by a snap-fit, making installation simpler and faster;

[0018] Second, the design and manufacturing of the limiting device do not require consideration of whether the elastic deformation of the spring matches the horizontal impact force. The snap-fit ​​method can adapt well to the impact force of floods, simplifying the design and manufacturing process.

[0019] 3. The anchors in the limiting device adopt a combination of plate and groove plate, and are pre-embedded in the plate bridge or pier cap to improve the stability of the limiting device connection.

[0020] Fourth, the use of interlocking limiting devices effectively restricts the displacement of the slab bridge during floods, preventing it from overturning, shifting horizontally, or floating due to water flow impact, thus enhancing the reliability of the slab bridge. It also prevents the slab bridge from being washed away during floods or under the impact of water flow, ensuring the safety of road traffic and the public's travel. Attached Figure Description

[0021] Figure 1A schematic diagram of the limiting device provided by this utility model;

[0022] Figure 2 A structural schematic diagram of the bridge provided by this utility model;

[0023] Figure 3 for Figure 2 Enlarged diagram of point A in the diagram.

[0024] In the attached diagram: 1. First anchor; 11. Fifth plate; 12. First anchor; 2. Second anchor; 21. Sixth plate; 22. Second anchor; 3. First fastener; 31. First hook; 32. First plate; 33. Second plate; 4. Second fastener; 41. Second hook; 42. Third plate; 43. Fourth plate; 10. Limiting device; 20. Plate bridge; 201. Bottom line; 30. Platform cap; 301. Top edge line; 40. Support pad stone; 50. Stop block. Detailed Implementation

[0025] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of the present invention can be combined with each other. For ease of description, the terms "upper," "lower," "left," and "right" appearing below only indicate that they correspond to the upper, lower, left, and right directions in the accompanying drawings and do not limit the structure.

[0026] like Figure 1 As shown, the limiting device 10 provided in this embodiment includes a first anchor 1, a second anchor 2, a first fastener 3, and a second fastener 4.

[0027] The first fastener 3 includes a first hook portion 31, a first plate 32, and a second plate 33. The first plate 32 and the first hook portion 31 are connected to both ends of the second plate 33. The first plate 32 and the first hook portion 31 are located on the same side of the second plate 33. The first hook portion 31 is a plate-shaped structure parallel to the first plate 32, and the first hook portion 31 extends toward the second fastener 4.

[0028] The first anchor 1 includes a fifth plate 11 and a first anchor 12. The fifth plate 11 is a steel plate, and its lower surface is connected to the first plate 32 of the first fastener 3. The upper surface of the fifth plate 11 is connected to the first anchor 12. The first anchor 12 can be a channel steel or an anchor bar. When it is a channel steel, its closed end is connected to the fifth plate 11, and its open end faces upward.

[0029] The second fastener 4 includes a third plate 42 and a fourth plate 43. The third plate 42 and the second hook 41 are connected to both ends of the fourth plate 43. The third plate 42 is connected to the second anchor 2. The third plate 42 and the second hook 41 are located on the same side of the fourth plate 43. The second hook 41 is a plate-shaped structure parallel to the third plate 42 and extends towards the first fastener 3.

[0030] The second anchor 2 includes a sixth plate 21 and a second anchor 22. The sixth plate 21 is a steel plate, and its upper surface is connected to the third plate 42 of the second fastener 4. The lower surface of the sixth plate 21 is connected to the second anchor 22. The second anchor 22 can be a channel steel or an anchor bar. When it is a channel steel, its closed end is connected to the sixth plate 21, and its open end faces downward.

[0031] The first anchor 1 and the second anchor 2 are arranged vertically opposite each other, and the first fastener 3 on the first anchor 1 and the second fastener 4 on the second anchor 2 are arranged horizontally opposite each other, so that the second plate 33 and the fourth plate 43 are arranged far apart from each other. The second hook 41 is engaged with the first hook 31, so that the first fastener 3 and the second fastener 4 are mutually limited in the horizontal direction.

[0032] The second hook 41 and the first hook 31 are pre-stitched with a gap, which does not restrict the relative longitudinal displacement (i.e., vertical displacement) of the upper and lower structures of the flooded bridge, and has no effect on the normal expansion and contraction of the flooded bridge under the action of temperature and vehicle braking force, and does not affect the normal use of the flooded bridge.

[0033] The first fastener 3, the second fastener 4, the first anchor 12 and the second anchor 22 can be made of channel steel, which is easy to obtain.

[0034] like Figure 2 As shown, this utility model also provides a bridge, which includes a cap 30, a slab bridge 20 disposed above the cap 30, and the aforementioned limiting device 10. Figure 2 In the diagram, B represents the upstream side and C represents the downstream side. Based on the force of the water flow, a space is reserved between the cap 30 and the bridge 20. The size of the cap 30 is adjusted by rotating a steel profile of the appropriate type.

[0035] The limiting device 10 should be installed at least once upstream and downstream of a single pier (cap), and at both ends of a single-span bridge. The upper surface of the cap 30 is also provided with multiple bearing pads 40 and stops 50. The multiple bearing pads 40 are located below the slab bridge 20, and the stops 50 are located at both ends of the slab bridge 20 in the width direction. The lower surface of the slab bridge 20 forms a bottom line 201, and the upper surface of the cap 30 forms a top edge line 301.

[0036] like Figure 3As shown, the first anchor 1 is pre-embedded in the bridge 20: a portion of the fifth plate 11 in the thickness direction extends outward from the lower end of the bottom line 201, and the other portion of the fifth plate 11 in the thickness direction and the first anchor 12 are both pre-embedded inside the bridge 20.

[0037] The second anchor 2 is embedded in the cap 30: a portion of the sixth plate 21 in the thickness direction extends outward from the upper end of the top edge line 301, and the other portion of the sixth plate 21 in the thickness direction and the second anchor 22 are both embedded inside the cap 30.

[0038] like Figure 2 As shown, the second plate 33 on the first fastener 3 is positioned near the upstream side B, and the fourth plate 43 on the second fastener 4 is positioned near the downstream side C. Thus, the second hook 41 and the first hook 31, when engaged, limit the first fastener 3 and the second fastener 4 to each other in the horizontal direction. If there are multiple limiting devices 10, all the first fasteners 3 will face the same direction.

[0039] The first anchor 1 and the second anchor 2 are pre-embedded parts, and the first fastener 3 and the second fastener 4 are welded on site. Example

[0040] This bridge is used in the access road construction project of a pumped storage power station. The superstructure is a single-span 13m cylindrical slab bridge, and the substructure consists of thin-walled abutments (caps). Two sets of limiting devices are installed on each of the upstream and downstream sides, 2.5m from the edge (top edge line) of the cap, with a spacing of 7.9m between the two sets of limiting devices. The combined height of the support system is 250mm. Based on load calculations, the first fastener 3 and the second fastener 4 are made of 126×53×9mm channel steel. The fifth plate 11 and the sixth plate 21 are made of 200mm×500mm×15mm steel plates, with the fifth plate 11 extending 10mm beyond the bottom line and the sixth plate 21 extending 10mm beyond the top edge line. The first anchor 12 and the second anchor 22 are made of 20mm diameter steel bars.

[0041] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A limiting device, characterized in that, It includes a first anchor (1), a second anchor (2), a first fastener (3) and a second fastener (4). The first anchor (1) is located above the second anchor (2). The upper end of the first fastener (3) is connected to the first anchor (1). The lower end of the first fastener (3) is provided with a first hook (31). The upper end of the second fastener (4) is provided with a second hook (41). The lower end of the second fastener (4) is connected to the second anchor (2). The second hook (41) is fastened to the first hook (31).

2. The limiting device according to claim 1, characterized in that, The first fastener (3) includes a first plate (32) and a second plate (33). The first plate (32) and the first hook (31) are connected to both ends of the second plate (33). The first plate (32) is connected to the first anchor (1).

3. The limiting device according to claim 2, characterized in that, The first plate (32) and the first hook (31) are located on the same side of the second plate (33).

4. The limiting device according to claim 2, characterized in that, The first hook (31) is a plate-shaped structure parallel to the first plate (32), and the first hook (31) extends toward the second fastener (4).

5. The limiting device according to claim 1, characterized in that, The second fastener (4) includes a third plate (42) and a fourth plate (43), the third plate (42) and the second hook (41) are connected to both ends of the fourth plate (43), and the third plate (42) is connected to the second anchor (2).

6. The limiting device according to claim 5, characterized in that, The third plate (42) and the second hook (41) are located on the same side of the fourth plate (43).

7. The limiting device according to claim 5, characterized in that, The second hook (41) is a plate-shaped structure parallel to the third plate (42), and the second hook (41) extends in the direction of the first fastener (3).

8. The limiting device according to claim 1, characterized in that, The first anchor (1) includes a fifth plate (11) and a first anchor (12). The lower surface of the fifth plate (11) is connected to the first fastener (3), and the upper surface of the fifth plate (11) is connected to the first anchor (12).

9. The limiting device according to claim 1, characterized in that, The second anchor (2) includes a sixth plate (21) and a second anchor (22), the upper surface of the sixth plate (21) is connected to the second fastener (4), and the lower surface of the sixth plate (21) is connected to the second anchor (22).

10. A bridge comprising a pier cap (30) and a slab bridge (20) disposed above the pier cap (30), characterized in that, It also includes a limiting device as described in any one of claims 1-9, wherein the first anchor (1) of the limiting device is embedded in the bridge plate (20), the second anchor (2) of the limiting device is embedded in the cap plate (30), and the first fastener (3) and the second fastener (4) are fastened between the bridge plate (20) and the cap plate (30).

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