Bridge expansion device for bridge construction

Abstract

The utility model discloses a bridge expansion device for building a bridge, which comprises a bridge main body, an expansion joint is arranged in the bridge main body, an expansion device main body is arranged at the top of the expansion joint, a reinforcing steel bar ring is arranged at the bottom of the expansion device main body, and reinforcing ribs are arranged in the reinforcing steel bar ring. Mounting plates are arranged on the left side and the right side of the telescopic device body, outer plates are arranged on the inner sides of the mounting plates, steel rings are arranged in the middles of the interiors of the outer plates, inner grooves are formed in the interiors of the outer plates, biting rings are arranged in the inner grooves, and connecting plates are arranged on the inner sides of the biting rings. The embedded connection of the steel rings and the biting rings enhances the strength of the joints, larger stress and deformation can be borne, the bridge body is allowed to freely stretch out and draw back under the conditions of temperature changes, load changes and the like due to the existence of the expansion joints, and therefore the structural stress is reduced, the bridge body is protected, and the situation that the telescopic structure between devices is affected due to dense biting teeth is prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field related to bridge expansion devices, and particularly relates to a bridge expansion device used for bridge construction. Background Art

[0002] The bridge expansion device is a special design in the bridge structure, which is used to allow the bridge to expand and contract under different circumstances. This design takes into account the deformation and stress that may occur in the bridge under the influence of factors such as thermal expansion and contraction, earthquakes, and wind loads, so as to ensure the structural stability and safety of the bridge. The bridge expansion joint is usually located in the connecting part of the bridge, including both ends and the middle. It is a gap structure used to compensate for the expansion and contraction of the bridge, which can allow the bridge to change in length in the longitudinal direction.

[0003] However, the existing bridge expansion devices are nested with teeth inside the devices, and the connection between the teeth is relatively close. When the teeth are deformed, it is not conducive to the expansion and contraction changes between the bridge expansion devices, which will cause stress concentration and increase the stress in certain parts, and may eventually cause material fatigue, cracks or fractures. Utility Model Content

[0004] The purpose of the present utility model is to provide a bridge expansion device for bridge construction, so as to solve the problem proposed in the above background technology that the existing bridge expansion device is nested with each other through the internal teeth of the device, and the connection between the teeth is relatively close. When the teeth are deformed, it is not conducive to the expansion and contraction changes between the bridge expansion device, which will cause stress concentration and increase the stress in certain parts, which may eventually lead to material fatigue, cracks or fractures.

[0005] To achieve the above-mentioned purpose, the present utility model provides the following technical solutions: a bridge expansion device for bridge construction, comprising a bridge body;

[0006] An expansion joint is provided at an inner position of the bridge body, a telescopic device body is provided at a top position of the expansion joint, a steel bar ring is provided at a bottom position of the telescopic device body, and reinforcing ribs are provided inside the steel bar ring;

[0007] Mounting plates are provided at the left and right sides of the telescopic device body, an outer plate is provided at the inner side of the mounting plate, and a steel ring is provided at the middle position inside the outer plate.

[0008] Preferably, an inner groove is provided at an inner position of the outer plate, a bite ring is provided at an inner position of the inner groove, and a connecting plate is provided at an inner position of the bite ring.

[0009] Preferably, the bite ring is welded to the mounting plate via a connecting plate, and the steel ring is nested with the bite ring.

[0010] Preferably, an array of fixing holes is provided at the internal positions of the mounting plate, screw rods are provided at the internal positions of the fixing holes, and the main body of the telescopic device is bolted to the main body of the bridge through the fixing holes and the screw rods.

[0011] Preferably, an arc top is provided at the top position of the telescopic device body, and a cross rod is provided below the arc top.

[0012] Preferably, a pad is provided at the bottom angle position of the cross rod, and five cross rods are arranged in an array at the left and right sides of the cross rod, and the cross rods are respectively connected to the arc top and the outer plate.

[0013] Preferably, a mortar trough is provided at an inner position of the bridge body, the mortar trough corresponds to the bottom of the arc top, the arc top is an arc-shaped structure, and the telescopic device body and the arc top are made of steel material.

[0014] Compared with the prior art, the present invention provides a bridge expansion device for bridge construction, which has the following beneficial effects:

[0015] 1. Through the arrangement of the mounting plate, outer plate, steel ring, inner groove, bite ring, connecting plate and fixing holes, the nested connection between the steel ring and the bite ring enhances the strength of the connection and can withstand greater stress and deformation. The existence of the expansion joint allows the bridge body to freely expand and contract under conditions of temperature changes, load changes, etc., thereby reducing structural stress and protecting the bridge body. Through the connection of multiple cross rods and the arc top, the entire system can be adjusted in shape and size as needed to adapt to different bridge design requirements. The arrangement of the fixing holes and screws makes the connection between the telescopic device body and the bridge body fast and reliable, simplifies the construction process, and prevents the dense bite teeth from affecting the telescopic structure between the devices.

[0016] 2. Through the setting of the arc top, cross rod and pad, the setting of the cross rod increases the seismic resistance of the device. Through the connection at multiple angles and positions, the entire system is more stable in earthquake or other vibration environments. The telescopic device body and arc top made of steel material have high strength and durability, and can effectively resist external forces and vibrations. The pad at the angle position at the bottom of the cross rod is used to disperse stress and reduce stress concentration at a certain point, thereby extending the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the present utility model.

[0018] Figure 2 It is a structural schematic diagram of the main body of the telescopic device in the utility model.

[0019] Figure 3 It is a structural schematic diagram of the mounting plate in the utility model.

[0020] Figure 4 It is a structural diagram of the steel ring in this utility model.

[0021] In the figure: 1. Telescopic device body; 2. Arc top; 3. Cross rod; 4. Mortar trough; 5. Bridge body; 6. Steel bar ring; 7. Expansion joint; 8. Reinforcement rib; 9. Steel ring; 10. Mounting plate; 11. Bite ring; 12. Outer plate; 13. Fixing hole; 14. Connecting plate; 15. Inner groove; 16. Pad. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] The utility model provides Figure 1-4 The bridge expansion device shown is used for bridge construction and includes a bridge body 5;

[0024] An expansion joint 7 is provided inside the bridge body 5, an expansion joint 7 is provided at the top of the expansion joint 7, a expansion device body 1 is provided at the bottom of the expansion device body 1, and a steel ring 6 is provided inside the steel ring 6. A reinforcing rib 8 is provided;

[0025] Mounting plates 10 are provided at the left and right sides of the telescopic device body 1 , an outer plate 12 is provided at the inner side of the mounting plate 10 , and a steel ring 9 is provided at the middle position inside the outer plate 12 .

[0026] An inner groove 15 is provided at an inner position of the outer plate 12 , a bite ring 11 is provided at an inner position of the inner groove 15 , and a connecting plate 14 is provided at an inner position of the bite ring 11 .

[0027] The bite ring 11 is welded to the mounting plate 10 via the connecting plate 14 , and the steel ring 9 is nested with the bite ring 11 .

[0028] An array of fixing holes 13 are provided at the inner position of the mounting plate 10 , and screw rods are provided at the inner position of the fixing holes 13 . The telescopic device body 1 is bolted to the bridge body 5 through the fixing holes 13 and the screw rods.

[0029] An arc top 2 is provided at the top of the telescopic device body 1 , and a cross rod 3 is provided below the arc top 2 .

[0030] A pad 16 is provided at the bottom angle of the cross bar 3 , and five cross bars 3 are arranged in an array at the left and right sides of the cross bar 3 , respectively. The cross bars 3 are connected to the arc top 2 and the outer plate 12 , respectively.

[0031] A mortar trough 4 is provided at an internal position of the bridge body 5 , and the mortar trough 4 corresponds to the bottom of the arc top 2 . The arc top 2 is an arc-shaped structure, and the telescopic device body 1 and the arc top 2 are made of steel.

[0032] In this embodiment, a specific implementation step of a bridge expansion device for bridge construction is to place the bridge body 5 on a preset base to ensure that the position is correct and meets the design requirements, set an expansion joint 7 inside the bridge body 5 to ensure that the size of the expansion joint meets the design standards, place the expansion device body 1 on the top of the expansion joint 7 to ensure that its position is symmetrical and fixed to the surrounding structure, place the steel ring 6 on the bottom of the expansion device body 1, place the reinforcing rib 8 inside the steel ring 6 to enhance the stability of the overall structure, and fix the mounting plate 10 on the expansion device body. The left and right sides of the body 1 are bolted to the bridge body 5 through the fixing holes 13 and screws to ensure firmness. The outer plate 12 is installed on the inner side of the mounting plate 10 to ensure that they are positioned correctly and can cooperate with each other. The steel ring 9 is placed in the middle position inside the outer plate 12 and nested with the bite ring 11 to ensure a firm connection. The bite ring 11 is installed inside the inner groove 15 of the outer plate 12. The connecting plate 14 is connected to the mounting plate 10 by welding. The arc top 2 is set at the top position of the telescopic device body 1, and the cross rod 3 is installed. The bottom angle position of each cross rod is connected to the pad 16. Ensure that the cross rods are arranged in an array of five groups and connected to the arc top 2 and the outer plate 12 respectively. After completing the installation of all components, check all connections, including the fixing holes 13 and screws, to ensure that there is no looseness or displacement.

[0033] like Figure 1-4 As shown, mounting plates 10 are provided at the left and right sides of the telescopic device body 1, an outer plate 12 is provided at the inner side of the mounting plate 10, a steel ring 9 is provided at the middle position inside the outer plate 12, an inner groove 15 is provided at the inner position of the outer plate 12, a bite ring 11 is provided at the inner position of the inner groove 15, a connecting plate 14 is provided at the inner side of the bite ring 11, the bite ring 11 is welded to the mounting plate 10 through the connecting plate 14, the steel ring 9 is nested and connected to the bite ring 11, an array of fixing holes 13 are provided at the inner position of the mounting plate 10, a screw is provided at the inner position of the fixing hole 13, and the telescopic device body 1 is bolted to the bridge body 5 through the fixing holes 13 and the screw.

[0034] Preferably, the nested connection between the steel ring 9 and the bite ring 11 enhances the strength of the connection and can withstand greater stress and deformation. The presence of the expansion joint 7 allows the bridge body 5 to freely expand and contract under temperature changes, load changes, etc., thereby reducing structural stress and protecting the bridge body. Through the connection of multiple cross rods 3 and the arc top 2, the entire system can be adjusted in shape and size as needed to adapt to different bridge design requirements. The setting of the fixing hole 13 and the screw makes the connection between the telescopic device body 1 and the bridge body 5 fast and reliable, simplifies the construction process, and prevents the dense bite teeth from affecting the telescopic structure between the devices.

[0035] like Figure 1-3 As shown, an arc top 2 is provided at the top position of the telescopic device body 1, a cross rod 3 is provided at the position below the arc top 2, a pad 16 is provided at the angle position at the bottom of the cross rod 3, and five cross rods 3 are arranged in an array at the left and right sides of the cross rod 3, and the cross rods 3 are respectively connected to the arc top 2 and the outer plate 12.

[0036] Preferably, the setting of the cross rod 3 increases the seismic resistance of the device. Through connections at multiple angles and positions, the entire system is more stable in earthquakes or other vibration environments. The telescopic device body 1 and arc top 2 made of steel material have high strength and durability, and can effectively resist external forces and vibrations. The pad 16 at the bottom angle of the cross rod 3 is used to disperse stress and reduce stress concentration at a certain point, thereby extending the service life of the device.

[0037] like Figure 1-4 As shown, a mortar trough 4 is provided at an internal position of the bridge body 5, and the mortar trough 4 corresponds to the bottom of the arc top 2. The arc top 2 is an arc-shaped structure, and the telescopic device body 1 and the arc top 2 are made of steel.

[0038] Optionally, the ash trough 4 is located inside the bridge body 5, corresponding to the bottom of the arc top 2. This design can effectively collect and guide rainwater, melted snow, and other liquids that may accumulate through the top of the arc top 2, prevent water from accumulating inside the bridge, and reduce the corrosion and damage of the bridge structure to the accumulated water. The arc top 2 adopts an arc-shaped structure, which helps the water flow to be quickly concentrated and smoothly flow to the ash trough 4, preventing water from stagnation, reducing the damage to the bridge structure caused by the pressure generated by accumulated water, and improving the waterproof ability of the entire bridge system. The telescopic device body 1 and the arc top 2 are made of steel material. Steel has excellent corrosion resistance and high strength, can effectively resist the erosion of chemical substances and the long-term effects of environmental factors, and enhance the durability and life of the bridge.

[0039] 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 replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A bridge expansion device for bridge construction, comprising a bridge body (5); An expansion joint (7) is provided at an inner position of the bridge body (5), a expansion device body (1) is provided at a top position of the expansion joint (7), a steel ring (6) is provided at a bottom position of the expansion device body (1), and a reinforcing rib (8) is provided at an inner position of the steel ring (6); Its characteristics are: Mounting plates (10) are provided at left and right sides of the telescopic device body (1), an outer plate (12) is provided at an inner position of the mounting plate (10), and a steel ring (9) is provided at a middle position inside the outer plate (12); an inner groove (15) is provided at an inner position of the outer plate (12), a bite ring (11) is provided at an inner position of the inner groove (15), and a connecting plate (14) is provided at an inner position of the bite ring (11); the bite ring (11) is welded to the mounting plate (10) via the connecting plate (14), and the steel ring (9) is nested and connected to the bite ring (11).

2. The bridge expansion device for bridge construction according to claim 1, characterized in that: An array of fixing holes (13) is provided at internal positions of the mounting plate (10), screw rods are provided at internal positions of the fixing holes (13), and the telescopic device body (1) is bolted to the bridge body (5) via the fixing holes (13) and the screw rods.

3. The bridge expansion device for bridge construction according to claim 1, characterized in that: An arc top (2) is provided at the top of the telescopic device body (1), and a cross rod (3) is provided below the arc top (2).

4. The bridge expansion device for bridge construction according to claim 3, characterized in that: A pad (16) is provided at the bottom angle position of the cross rod (3), and five cross rods (3) are arranged in an array at the left and right sides of the cross rod (3). The cross rods (3) are respectively connected to the arc top (2) and the outer plate (12).

5. The bridge expansion device for bridge construction according to claim 1, characterized in that: A mortar trough (4) is provided at an internal position of the bridge body (5), and the mortar trough (4) corresponds to the bottom of the arc top (2). The arc top (2) is an arc-shaped structure, and the telescopic device body (1) and the arc top (2) are made of steel material.

Images