Reinforced anchoring type bridge expansion device

Abstract

The utility model relates to the technical field of bridge expansion devices, and discloses a reinforced anchoring type bridge expansion device which comprises a middle rail, a stiffening plate is fixedly connected to the lower surface of the middle rail, a cross beam is fixedly connected to the outer wall of the stiffening plate, and water-stop belts which are in bilateral symmetry are fixedly connected to the interior of the middle rail. The outer walls of the water stop belts are fixedly connected with side rails, the outer walls of the side rails are slidably connected with anchoring plates, anchoring ribs are arranged in the anchoring plates in a penetrating mode, the upper surface of the cross beam is fixedly connected with an upper support, and the upper surface of the upper support is fixedly connected with a bottom face supporting plate. Through cooperation of the middle rail, the reinforcing plate, the anchoring plate and the anchoring rib, the effects of enhancing the bearing capacity of the side rail and reducing deflection deformation of the side rail are achieved, and the problems that due to the fact that a steel rail prone to falling off is prone to form the elevation difference at the two ends of an expansion joint, vehicles jump, driving safety and comfort are affected, and impact loads are increased due to frequent vehicle jump are solved. And the expansion joint protection belt is damaged and cracked.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge expansion devices, in particular to a reinforced anchoring type bridge expansion device. Background Art

[0002] Strengthened anchor bridge refers to the strengthening anchor technology used in bridge structure. This technology is usually used to strengthen and stabilize bridge structure, especially when the bridge is subjected to vibration, deformation or other external forces. Strengthened anchor bridge usually adopts some special reinforcement materials and structural design to increase the stability and bearing capacity of the bridge. At the same time, the internal expansion device of the strengthened anchor bridge is required to increase the service life of the bridge. The expansion device is an important auxiliary facility of the bridge. It is used to ensure that the bridge structure can freely expand and contract under the action of natural temperature without affecting the passage of the bridge deck. The expansion device is located on the bridge deck. In order to ensure that vehicles can pass smoothly and safely, the bearing capacity and deformation capacity of the expansion device must meet the requirements. With the increasing development of society, the traffic volume has increased significantly. With the increasing traffic flow, the problem of bridge expansion joint disease has become increasingly prominent.

[0003] After searching, the publication number CN117005298A discloses an anchoring reinforced telescopic device and its application method, which relates to the technical field of bridge telescopic devices. The telescopic device includes: two comb plates that cooperate with each other; a support member, a plurality of support members are arranged at intervals along the length direction of the comb plate at the bottom of each comb plate, and the support member has an upper support surface and a lower support surface that are parallel to each other, the upper support surface of each support member is fixedly connected to the comb plate, and the lower support surface is used to provide support; connecting steel bars, which are used to connect all the support members at the bottom of each comb plate together. The application method includes improving the welding environment of the connecting member through the notch of the comb plate; and installing the anchoring reinforced telescopic device as a whole, so that the construction is simpler and the construction period is shorter. When the comb plate of the telescopic device provided by the invention is subjected to vertical force, the upper supporting surface and the lower supporting surface of the support member can better bear and disperse the stress, thereby improving the anchoring performance of the telescopic device and enhancing the service life of the telescopic device. The welding length of the rail anchor plate in this application is short, which is easy to detach under heavy traffic, causing the rail to fall off. The fallen rail forms an elevation difference at both ends of the expansion joint, causing the vehicle to jump, affecting driving safety and comfort. Frequent jumping will also increase the impact load, causing damage and cracking of the expansion joint protection belt. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a reinforced anchored bridge expansion device, which aims to improve the elevation difference formed by the detached rails at the two ends of the expansion joint, causing the vehicle to jump, affecting driving safety and comfort. Frequent jumping will also increase the impact load and cause damage and cracking of the expansion joint protective belt.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a reinforced anchored bridge expansion device, comprising a middle rail, the lower surface of the middle rail is fixedly connected with a stiffening plate, the outer wall of the stiffening plate is fixedly connected with a cross beam, the interior of the middle rail is fixedly connected with a left-right symmetrical water stop strip, the outer walls of the water stop strip are fixedly connected with side rails, the outer walls of the side rails are slidably connected with anchor plates, anchor ribs are penetrated inside the anchor plate, the upper surface of the cross beam is fixedly connected with an upper support, the upper surface of the upper support is fixedly connected with a bottom support plate, the upper surface of the bottom support plate is fixedly connected to the lower surface of the side rail, and the lower surface of the cross beam is provided with a support assembly.

[0006] Furthermore, the support assembly includes a lower support, the upper surface of the lower support is fixedly connected to the lower surface of the beam, the outer wall of the lower support is fixedly connected with a left-right symmetrical reinforcement plate, and the reinforcement plate and the lower surface of the lower support are both fixedly connected to the upper surface of the bottom support plate.

[0007] Furthermore, a bilaterally symmetrical reinforcing plate is fixedly connected to the upper end of the outer wall of the upper support, and the reinforcing plate and the outer wall of the upper support are both fixedly connected to the lower surface of the bottom support plate.

[0008] Furthermore, a left-right symmetrical limit block is fixedly connected to the interior of the crossbeam, and the limit block is arranged below the upper support.

[0009] Furthermore, a plurality of displacement boxes 1 are fixedly connected to the lower surface of the side rail, and the spacing between the displacement boxes 1 is 1200 mm.

[0010] Furthermore, the outer wall of the bottom support plate is fixedly connected with a bilaterally symmetrical side reinforcement connecting plate, and the outer wall of the side reinforcement connecting plate is arranged above the outer wall of the displacement box 1.

[0011] Furthermore, the anchor plate and the side rail are embedded, which increases the welding surface between the anchor plate and the side rail and enhances the supporting force of the side rail.

[0012] Furthermore, the cross section of the cross beam is 90x100mm to increase the supporting area.

[0013] Furthermore, a plurality of shallowly buried displacement boxes are fixedly connected to the lower surface of the crossbeam, and the shallowly buried displacement boxes are fixedly connected to the outer wall of displacement box one.

[0014] Furthermore, the bottom support plate and the side reinforcement connecting plate are used to improve the bearing capacity of the expansion joint segment welding points, and the outer wall of the side reinforcement connecting plate is arranged on one side of the outer wall of the crossbeam.

[0015] The utility model has the following beneficial effects:

[0016] 1. In the utility model, the middle rail, the reinforcing plate, the anchor plate and the anchor rib cooperate with each other to enhance the bearing capacity of the side rail and reduce the deflection and deformation of the side rail, and solve the problem that the easily detached rails easily form elevation differences at both ends of the expansion joint, causing the vehicle to jump, affecting driving safety and comfort. Frequent jumping will also increase the impact load, causing the expansion joint protection belt to be damaged and cracked, thereby improving the anti-deformation ability of the telescopic device.

[0017] 2. In the utility model, the coordination among the limit block, the displacement box 1, the side reinforcement connecting plate and the shallow buried displacement box is achieved to reduce the change in the deflection of the beam in the telescopic device, effectively prolong the service life of the telescopic device, and improve the actual use effect of the telescopic device by reducing the spacing between the displacement boxes to meet the needs of heavy-load traffic. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a front view of a reinforced anchoring bridge expansion device proposed by the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the middle rail portion of a reinforced anchoring bridge expansion device proposed by the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the anchor plate portion of a reinforced anchor type bridge expansion device proposed by the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the anchor bar portion of a reinforced anchor type bridge expansion device proposed by the utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the crossbeam portion of a reinforced anchoring bridge expansion device proposed by the utility model;

[0023] Figure 6 This is a schematic diagram of the structure of the upper support portion of a reinforced anchoring bridge expansion device proposed by the utility model;

[0024] Figure 7 This is a schematic diagram of the structure of the side reinforcement connecting plate of a reinforced anchoring bridge expansion device proposed by the utility model;

[0025] Figure 8 The utility model provides a partial structural schematic diagram of a shallow buried displacement box of a reinforced anchoring bridge expansion device.

[0026] Legend:

[0027] 1. Middle rail; 2. Side rail; 3. Stiffening plate; 4. Crossbeam; 5. Upper support; 6. Lower support; 7. Waterstop; 8. Reinforcement plate; 9. Anchor plate; 10. Anchor rib; 11. Limit block; 12. Displacement box 1; 13. Side reinforcement connecting plate; 14. Shallow buried displacement box. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] Reference Figure 1-Figure 3 The utility model provides an embodiment: a reinforced anchored bridge expansion device, including a middle rail 1, a stiffening plate 3 is fixedly connected to the lower surface of the middle rail 1, and a cross beam 4 is fixedly connected to the outer wall of the stiffening plate 3, and a left-right symmetrical water stop strip 7 is fixedly connected to the inside of the middle rail 1, and the outer walls of the water stop strip 7 are fixedly connected to the side rails 2, and the outer walls of the side rails 2 are slidably connected to the anchor plates 9, and the anchor bars 10 are penetrated inside the anchor plates 9, and the upper surface of the cross beam 4 is fixedly connected to the upper support 5, and the upper surface of the upper support 5 is fixedly connected to the bottom support plate, and the upper surface of the bottom support plate is fixedly connected to the lower surface of the side rail 2, and the lower surface of the cross beam 4 is provided with a support assembly.

[0030] Specifically, the main components of the telescopic device in application include special-shaped steel side rails 2, special-shaped steel middle rails 1, anchor plates 9, anchor ribs 10, displacement boxes, and rubber waterstops 7. The combined use of these components makes the telescopic device have extremely high adaptability and load-bearing capacity. First, by adjusting the number of special-shaped steel middle rails 1, the telescopic device can adapt to different expansion joint widths. This flexible adjustment method meets various engineering needs. In addition, by strengthening the size of the side rails 2 and the center beam steel and adopting the center beam steel with a cross-sectional size of 90x130mm, the load-bearing capacity of the telescopic device is further improved. In terms of the anchoring structure, the anchoring method of the anchor plate 9 and the side rail 2 is adjusted so that the bottom of the side rail 2 is embedded in the groove of the anchor plate 9. This design enhances the load-bearing capacity of the side rail 2 and reduces its deflection deformation.

[0031] Reference Figure 3-Figure 6The supporting assembly includes a lower support 6, the upper surface of the lower support 6 is fixedly connected to the lower surface of the cross beam 4, the outer wall of the lower support 6 is fixedly connected with a left-right symmetrical reinforcing plate 8, the reinforcing plate 8 and the lower surface of the lower support 6 are both fixedly connected to the upper surface of the bottom support plate, the upper end of the outer wall of the upper support 5 is fixedly connected with a left-right symmetrical reinforcing plate 8, the reinforcing plate 8 and the outer wall of the upper support 5 are both fixedly connected to the lower surface of the bottom support plate, and the interior of the cross beam 4 is fixedly connected with a left-right symmetrical limit block 11, which is arranged below the upper support 5.

[0032] Specifically, the reinforcing plate 8 connected by the upper support 5 and the lower support 6 plays the role of supporting and fixing the cross beam 4. This design ensures the stability and safety of the entire telescopic device. The entire telescopic device is placed in the reserved groove of the expansion joint at the beam end. An anchor plate 9 is provided between the side rail 2 and the anchor rib 10 to strengthen the connection. The anchor plate 9 and the side rail 2 adopt an embedded design, which increases the welding area between the anchor steel plate and the steel section, and further enhances the bearing capacity of the side beam steel. At the same time, a bottom support plate and a side reinforcing connecting plate 13 are provided for reinforcement, which improves the bearing capacity of the expansion joint segment welding point, and a shallow buried section is provided at 1.5m at both ends of the expansion joint, thereby improving the applicability of the telescopic device. This design enables the telescopic device to work stably in various environments and meet the needs of different projects. In short, through the above design and working principle, the telescopic device has demonstrated excellent performance and extremely high reliability in application.

[0033] Reference Figure 6-Figure 8 The lower surface of the side rail 2 is fixedly connected with a plurality of displacement boxes 12, and the spacing between the displacement boxes 12 is 1200mm. The outer wall of the bottom support plate is fixedly connected with a left-right symmetrical side reinforcement connecting plate 13, and the outer wall of the side reinforcement connecting plate 13 is arranged above the outer wall of the displacement box 12. The anchor plate 9 and the side rail 2 are embedded, and the welding surface between the anchor plate 9 and the side rail 2 is increased, thereby enhancing the supporting force of the side rail 2. The cross-section of the beam 4 is 90x100mm to increase the supporting area. The lower surface of the beam 4 is fixedly connected with a plurality of shallow buried displacement boxes 14, and the shallow buried displacement box 14 is fixedly connected to the outer wall of the displacement box 12. The bottom support plate and the side reinforcement connecting plate 13 are used to improve the bearing capacity of the expansion joint segment welding, and the outer wall of the side reinforcement connecting plate 13 is arranged on one side of the outer wall of the beam 4.

[0034] Specifically, the spacing between the displacement boxes was reduced at the same time. The standard requirement for the spacing between the displacement boxes is to be controlled at a maximum of 1800mm to ensure the stability and safety of the telescopic device. During the installation process, the displacement box 12 and the shallow buried displacement box 14 were buried in the reserved groove of the expansion joint at the beam end. In order to meet the needs of heavy-load traffic, the spacing between the displacement boxes of the telescopic device was adjusted to no more than 1200mm. This adjustment reduced the wheel load acting on the middle bridge from 91KN to less than 40KN. This measure reduced the deflection change of the beam in the telescopic device and effectively extended its service life.

[0035] Working principle: When the telescopic device is used, its main components are: special-shaped steel side rails 2, special-shaped steel middle rails 1, anchor plates 9, anchor ribs 10, displacement boxes, and rubber waterstops 7. First, by adjusting the number of special-shaped steel middle rails 1, it can adapt to different expansion joint widths. The telescopic device significantly improves its bearing capacity by strengthening the size of the side rails 2 and the middle beam steel and adopting the middle beam steel with a cross-sectional size of 90x130mm. In addition, the anchoring structure of the anchor plate 9 and the side rails 2 is adjusted so that the bottom of the side rails 2 is embedded in the groove of the anchor plate 9, so that the anchor plate 9 has a better supporting effect on the side rails 2, enhances the bearing capacity of the side rails 2, reduces the deflection deformation of the side rails 2, and reduces the spacing between the displacement boxes. The standard requirement for the spacing between the displacement boxes is controlled at a maximum of 1800mm, and the displacement box and the shallow buried displacement box are buried in the expansion joint reserve at the beam end. In the slot, the reinforcing plate 8 connected by the upper support 5 and the lower support 6 plays the role of supporting and fixing the cross beam 4. On this basis, in order to meet the needs of heavy-load traffic, the displacement box spacing of the telescopic device is adjusted to no more than 1200mm, thereby reducing the wheel load acting on the middle beam from 91KN to less than 40KN. This measure reduces the change in the deflection of the middle beam of the telescopic device and effectively extends its service life. The entire telescopic device is placed in the reserved slot of the expansion joint at the end of the beam. An anchor plate 9 is provided between the side rail 2 and the anchor bar 10 to strengthen the connection. The anchor plate 9 and the side rail 2 adopt an embedded design, which increases the welding area between the anchor steel plate and the steel section, and further enhances the bearing capacity of the side beam steel. At the same time, the bottom support plate and the side reinforcing connecting plate 13 are provided for reinforcement, which improves the bearing capacity of the expansion joint segment welding. Shallow buried sections are set at 1.5m at both ends of the expansion joint to improve its applicability.

[0036] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A reinforced anchor type bridge expansion device, comprising a middle rail (1), characterized in that: The lower surface of the middle rail (1) is fixedly connected to a stiffening plate (3), the outer wall of the stiffening plate (3) is fixedly connected to a cross beam (4), the interior of the middle rail (1) is fixedly connected to a left-right symmetrical water stop strip (7), the outer walls of the water stop strip (7) are fixedly connected to side rails (2), the outer walls of the side rails (2) are slidably connected to anchor plates (9), the interior of the anchor plates (9) is provided with anchor ribs (10), the upper surface of the cross beam (4) is fixedly connected to an upper support (5), the upper surface of the upper support (5) is fixedly connected to a bottom support plate, the upper surface of the bottom support plate is fixedly connected to the lower surface of the side rail (2), and the lower surface of the cross beam (4) is provided with a support assembly.

2. A reinforced anchor bridge expansion device according to claim 1, characterized in that: The support assembly comprises a lower support (6), the upper surface of the lower support (6) is fixedly connected to the lower surface of the crossbeam (4), the outer wall of the lower support (6) is fixedly connected to a left-right symmetrical reinforcing plate (8), and the reinforcing plate (8) and the lower surface of the lower support (6) are both fixedly connected to the upper surface of the bottom support plate.

3. A reinforced anchor bridge expansion device according to claim 1, characterized in that: A left-right symmetrical reinforcing plate (8) is fixedly connected to the upper end of the outer wall of the upper support (5), and the reinforcing plate (8) and the outer wall of the upper support (5) are both fixedly connected to the lower surface of the bottom support plate.

4. A reinforced anchor bridge expansion device according to claim 1, characterized in that: A left-right symmetrical limit block (11) is fixedly connected to the interior of the cross beam (4), and the limit block (11) is arranged below the upper support (5).

5. The reinforced anchor bridge expansion device according to claim 1, characterized in that: A plurality of displacement boxes (12) are fixedly connected to the lower surface of the side rail (2), and the spacing between the displacement boxes (12) is 1200 mm.

6. The reinforced anchor bridge expansion device according to claim 1, characterized in that: The outer wall of the bottom support plate is fixedly connected with a left-right symmetrical side reinforcement connecting plate (13), and the outer wall of the side reinforcement connecting plate (13) is arranged above the outer wall of the displacement box 1 (12).

7. The reinforced anchor bridge expansion device according to claim 1, characterized in that: The anchor plate (9) and the side rail (2) are embedded, thereby increasing the welding surface of the anchor plate (9) and the side rail (2) and enhancing the supporting force of the side rail (2).

8. The reinforced anchor bridge expansion device according to claim 1, characterized in that: The cross-section of the cross beam (4) is 90x100 mm to increase the supporting area.

9. The reinforced anchor bridge expansion device according to claim 1, characterized in that: A plurality of shallowly buried displacement boxes (14) are fixedly connected to the lower surface of the crossbeam (4), and the shallowly buried displacement boxes (14) are fixedly connected to the outer wall of displacement box one (12).

10. The reinforced anchor bridge expansion device according to claim 1, characterized in that: The bottom support plate and the side reinforcement connecting plate (13) are used to improve the bearing capacity of the expansion joint segment welding points, and the outer wall of the side reinforcement connecting plate (13) is arranged on one side of the outer wall of the crossbeam (4).

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