Bridge expansion joint device for bridges

Abstract

The utility model relates to expansion joint device technical field, especially bridge expansion joint device for bridge, including first section steel and second section steel, base plate, rubber buffer strip and anti -bulge component, first section steel and second section steel are opposite and set up, the top of first section steel and second section steel is equipped with the anti -bulge component for preventing the comb tooth extrusion and rising, the opposite surface between first section steel and second section steel is equipped with the rubber buffer strip of expansion joint buffer, the lower end of first section steel and second section steel all is equipped with the base plate for connecting bridge pre -buried groove, the utility model realizes through anti -bulge component, effectively prevented the first comb tooth and the second comb tooth in the extrusion process and rising, eliminated the possible security risk that caused because of the comb tooth rising, guaranteed the safety of the bridge on -going car and the pedestrian.

Description

Technical Field

[0001] This utility model relates to the field of expansion joint device technology, and in particular to a bridge expansion joint device for bridges. Background Technology

[0002] In modern bridge engineering, bridge expansion joints, as important functional components, play a crucial role in regulating the displacement deformation of bridges caused by temperature changes, concrete shrinkage and creep, and vehicle loads, ensuring the structural integrity of bridges and driving comfort. With the increasing traffic flow and frequent passage of heavy vehicles, the working environment of bridge expansion joints is becoming more and more complex, which puts forward higher requirements for their performance and durability.

[0003] Traditional bridge expansion joint devices have several drawbacks during use. First, when the bridge experiences insufficient expansion and contraction, the comb teeth are prone to warping during compression, posing a safety hazard. Second, since bridge expansion joints are in an open environment, debris can easily accumulate inside, hindering the normal expansion and contraction movement of the first and second steel sections and reducing the expansion allowance.

[0004] Therefore, in view of the defects of the traditional bridge expansion joint device mentioned above, a bridge expansion joint device for bridges can be designed. By setting up anti-protrusion components to prevent the comb teeth from being squeezed and lifted, using telescopic rubber anti-blocking strips to avoid foreign objects from blocking, and using guide shafts and guide sleeves to enhance expansion and contraction stability, the above problems can be easily solved. Utility Model Content

[0005] In order to overcome the shortcomings of traditional bridge expansion joint devices, such as the comb teeth easily lifting up during the compression process, causing certain safety hazards, and debris easily accumulating inside the expansion joint, hindering the normal expansion and contraction movement of the first and second steel sections, resulting in a reduction in the expansion allowance, this utility model provides a bridge expansion joint device for bridges.

[0006] The technical solution is as follows: A bridge expansion joint device for bridges includes a first steel section and a second steel section, a base plate, a rubber buffer strip, and an anti-bulge component; the first steel section and the second steel section are arranged opposite to each other, and multiple sets of first comb teeth are evenly arranged on the top of the side of the first steel section near the second steel section, and multiple sets of second comb teeth are evenly arranged on the top of the side of the second steel section near the first steel section. The multiple sets of second comb teeth and the multiple sets of first comb teeth are staggered, and a first comb groove corresponding to the first comb tooth is opened between the multiple sets of second comb teeth. Multiple sets of second comb grooves corresponding to the second comb tooth are opened between the multiple sets of first comb teeth. An anti-bulge component for preventing the comb teeth from being squeezed and raised is provided above the first steel section and the second steel section. A rubber buffer strip adapted to the expansion joint buffer is provided between the opposite surfaces of the first steel section and the second steel section. A base plate for connecting the bridge pre-embedded groove is provided at the lower end of both the first steel section and the second steel section.

[0007] Furthermore, both the first and second steel sections have an embedded groove at their tops to accommodate the anti-protrusion component. The anti-protrusion component includes a first anti-protrusion plate and a second anti-protrusion plate, which are located inside the two sets of embedded grooves respectively. The first anti-protrusion plate and the second anti-protrusion plate have a first mounting hole at the corner of their surfaces, and the bottom corners of the two sets of embedded grooves have a second mounting hole corresponding to the first mounting hole.

[0008] Furthermore, the first anti-protrusion plate and the second anti-protrusion plate are provided with slots at their adjacent ends, and a telescopic rubber anti-blocking strip is provided between the first anti-protrusion plate and the second anti-protrusion plate. The telescopic rubber anti-blocking strip is provided with corresponding slots on both sides.

[0009] Furthermore, the middle section of the opposite face of the first and second steel sections is provided with an embedding groove, and anti-detachment strips are provided on both sides of the rubber buffer strip and embedded in the embedding groove.

[0010] Furthermore, multiple sets of guide shafts are evenly arranged on the side of the substrate at the lower end of the first steel section near the second steel section, and multiple sets of guide sleeves corresponding to the guide shafts are evenly arranged on the side of the substrate at the lower end of the second steel section near the first steel section.

[0011] Furthermore, multiple sets of fixed reinforcing bars are evenly provided on the sides of the first and second steel sections that are far apart from each other, and multiple sets of baffle plates are interspersed among the multiple sets of fixed reinforcing bars.

[0012] Furthermore, multiple sets of pad grooves are evenly formed on the surfaces of the two sets of substrates that are far apart. Spacers are fitted inside the pad grooves, and fixing holes are formed in the center of the multiple sets of pad grooves. The fixing holes penetrate the spacers, and mounting bolts are provided inside the fixing holes.

[0013] The beneficial effects are as follows: Compared with traditional bridge expansion joint devices, which have defects in use, this application effectively prevents the first and second comb teeth from warping during compression by setting up anti-protrusion components, eliminating potential safety hazards caused by comb tooth warping, and ensuring the safety of vehicles and pedestrians on the bridge. The expansion rubber anti-blocking strip prevents debris from accumulating inside the expansion joint, ensuring that the first and second steel sections can move normally in expansion and contraction, guaranteeing expansion and contraction margin, and enabling the bridge to better adapt to deformation caused by various factors, thus improving the bridge's performance and durability. The cooperation between the guide shaft and the guide sleeve provides precise guidance for the relative movement of the first and second steel sections, greatly enhancing the stability of expansion and contraction, reducing the swaying and offset of the steel sections during expansion and contraction, and improving the overall reliability of the bridge expansion joint device. The rubber buffer strip can play a good buffering role during the expansion and contraction deformation of the bridge, reducing the impact force between the first and second steel sections, protecting the bridge structure from damage, and extending the service life of the bridge. The design of fixing steel bars and resistance plates makes the connection between the expansion joint device and the bridge structure more solid, effectively resisting the influence of vehicle loads and vibrations. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the bridge expansion joint device of this utility model;

[0015] Figure 2 This is a schematic diagram of the first type of steel structure of this utility model;

[0016] Figure 3 This is a three-dimensional structural diagram of the first comb tooth and the second comb groove of this utility model;

[0017] Figure 4 This is a three-dimensional structural diagram of the second type of steel, the second comb tooth, and the first comb groove of this utility model;

[0018] Figure 5 This is a three-dimensional structural diagram of the anti-protrusion component of this utility model.

[0019] Explanation of reference numerals in the attached drawings: 1. First steel profile; 2. Second steel profile; 3. Base plate; 4. Embedded groove; 5. Rubber buffer strip; 501. Anti-detachment strip; 6. Anti-protrusion assembly; 601. First anti-protrusion plate; 602. Second anti-protrusion plate; 603. Second mounting hole; 604. Slot; 605. Telescopic rubber anti-blocking strip; 606. Locking strip; 7. Resistance plate; 8. Fixing reinforcing bar; 9. Pad groove; 10. Fixing hole; 11. Spacer; 12. Mounting bolt; 13. Guide shaft; 14. First comb tooth; 15. Second comb groove; 16. Embedded groove; 17. First mounting hole; 18. Guide sleeve; 19. Second comb tooth; 20. First comb groove. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0021] Example

[0022] like Figures 1-5As shown, a bridge expansion joint device for bridges includes a first steel section 1 and a second steel section 2, a base plate 3, a rubber buffer strip 5, and an anti-bulge component 6. The first steel section 1 and the second steel section 2 are arranged opposite each other. Multiple sets of first comb teeth 14 are evenly arranged on the top of the side of the first steel section 1 near the second steel section 2. Multiple sets of second comb teeth 19 are evenly arranged on the top of the side of the second steel section 2 near the first steel section 1. The multiple sets of second comb teeth 19 and the multiple sets of first comb teeth 14 are staggered. A first comb groove 20 corresponding to the first comb teeth 14 is opened between the multiple sets of second comb teeth 19. Multiple sets of second comb grooves 15 corresponding to the second comb teeth 19 are opened between the multiple sets of first comb teeth 14. An anti-bulge component 6 for preventing the comb teeth from being squeezed and raised is provided above the first steel section 1 and the second steel section 2. A rubber buffer strip 5 adapted to the expansion joint buffer is provided between the opposite sides of the first steel section 1 and the second steel section 2. A base plate 3 for connecting the bridge pre-embedded groove is provided at the lower end of both the first steel section 1 and the second steel section 2.

[0023] Both the first steel section 1 and the second steel section 2 have an inner groove 16 at their tops to accommodate the anti-protrusion component 6. The anti-protrusion component 6 includes a first anti-protrusion plate 601 and a second anti-protrusion plate 602. The first anti-protrusion plate 601 and the second anti-protrusion plate 602 are respectively located inside the two sets of inner grooves 16. A first mounting hole 17 is provided at the corner of the surface of the first anti-protrusion plate 601 and the second anti-protrusion plate 602. A second mounting hole 603 corresponding to the first mounting hole 17 is provided at the bottom corner of the two sets of inner grooves 16. The top of the first steel section 1 and the second steel section 2 are provided with embedded grooves 16 to accommodate the anti-protrusion component 6, so that the anti-protrusion component 6 can be well embedded in them without taking up too much extra space and ensuring its installation stability. Through the first mounting hole 17 and the second mounting hole 603, the anti-protrusion component 6 can be firmly installed on the steel section with bolts and other fasteners, ensuring that the first anti-protrusion plate 601 and the second anti-protrusion plate 602 can prevent the comb teeth from being squeezed and lifted during the expansion and contraction deformation of the bridge, thus eliminating safety hazards.

[0024] Both the first anti-protrusion plate 601 and the second anti-protrusion plate 602 have slots 604 at their near ends. A telescopic rubber anti-blocking strip 605 is provided between the first anti-protrusion plate 601 and the second anti-protrusion plate 602. Both sides of the telescopic rubber anti-blocking strip 605 are provided with corresponding clips 606 in the slots 604. Through the cooperative design of the slots 604 and the clips 606, the telescopic rubber anti-blocking strip 605 can be conveniently, quickly and firmly installed between the first anti-protrusion plate 601 and the second anti-protrusion plate 602, effectively preventing debris from entering the expansion joint, avoiding the accumulation of debris that hinders the normal expansion and contraction of the first steel section 1 and the second steel section 2, and ensuring the expansion and contraction allowance.

[0025] Both the first steel section 1 and the second steel section 2 have an embedded groove 4 in the middle of their opposite surfaces. Both sides of the rubber buffer strip 5 are provided with anti-detachment strips 501 that are embedded in the embedded groove 4. The design of the anti-detachment strips 501 embedded in the embedded groove 4 enhances the connection between the rubber buffer strip 5, the first steel section 1 and the second steel section 2. During the expansion and contraction deformation of the bridge, the rubber buffer strip 5 plays a buffering role, reduces the impact force between the steel sections and protects the bridge structure.

[0026] Multiple sets of guide shafts 13 are evenly arranged on the side of the base plate 3 at the lower end of the first steel 1 near the second steel 2. Multiple sets of guide sleeves 18 corresponding to the guide shafts 13 are evenly arranged on the side of the base plate 3 at the lower end of the second steel 2 near the first steel 1. The cooperation between the guide shafts 13 and the guide sleeves 18 provides precise guidance for the relative movement of the first steel 1 and the second steel 2. When expansion and contraction deformation occurs, the guide shafts 13 slide in the guide sleeves 18, ensuring that the first steel 1 and the second steel 2 can only expand and contract in a specific direction, which greatly enhances the stability of expansion and contraction.

[0027] On the side of the first steel section 1 and the second steel section 2 that are far apart, multiple sets of fixed steel bars 8 are evenly provided. Multiple sets of friction-increasing plates 7 are interspersed among the multiple sets of fixed steel bars 8. By combining the fixed steel bars 8 with the friction-increasing plates 7, the friction and adhesion between the steel section and the surrounding concrete and other structures are increased when concrete is poured into the pre-embedded groove. This prevents the steel section from separating from or loosening from the bridge structure due to factors such as vehicle loads and vibrations during long-term use.

[0028] Multiple sets of grooves 9 are evenly formed on the surfaces of the two sets of substrates 3 that are far apart. Spacers 11 are fitted inside the grooves 9. Fixing holes 10 are formed in the center of the multiple sets of grooves 9. The fixing holes 10 pass through the spacers 11. Mounting bolts 12 are provided inside the fixing holes 10. By forming grooves 9 and setting spacers 11 on the surface of substrates 3, when installing the bridge expansion joint device, the mounting bolts 12 fix the substrates 3 to the bridge pre-embedded groove through the fixing holes 10. The spacers 11 can reduce rigid collisions caused by vibration when vehicles pass by.

[0029] During the work, the workers first clean the bridge pre-embedded groove to ensure that the groove is clean and free of debris. The base plate 3 at the lower end of the first steel 1 and the second steel 2 is placed in the pre-embedded groove. Using the fixing holes 10 on the base plate 3, the base plate 3 is fixed to the pre-embedded groove by the mounting bolts 12. The spacer 11 effectively reduces rigid collisions during installation and subsequent vehicle passage. During installation, the guide shaft 13 of the base plate 3 at the lower end of the first steel 1 is inserted into the guide sleeve 18 of the base plate 3 at the lower end of the second steel 2 to ensure precise alignment between the two.

[0030] Subsequently, the anti-detachment strips 501 on both sides of the rubber buffer strip 5 are embedded into the embedding grooves 4 in the middle section of the opposite side of the first steel 1 and the second steel 2. Then, the anti-protrusion component 6 is installed in the inner grooves 16 at the top of the first steel 1 and the second steel 2. The first anti-protrusion plate 601 and the second anti-protrusion plate 602 are firmly fixed with bolts through the first mounting hole 17 and the second mounting hole 603. Next, the retaining strips 606 on both sides of the telescopic rubber anti-blocking strip 605 are embedded into the retaining grooves 604 of the first anti-protrusion plate 601 and the second anti-protrusion plate 602 to complete the installation of the telescopic rubber anti-blocking strip 605. At this point, the entire bridge expansion joint device is installed.

[0031] Its working principle is as follows: when the bridge undergoes expansion and contraction deformation due to temperature changes, concrete shrinkage and creep, or vehicle loads, the first steel section 1 and the second steel section 2 will move relative to each other. At this time, the guide shaft 13 slides within the guide sleeve 18, providing precise guidance for their relative movement and ensuring that they can only expand and contract in a specific direction, effectively preventing misalignment or jamming of the steel sections. During the expansion and contraction process, the first comb tooth 14 and the second comb tooth 19 move alternately within the first comb groove 20 and the second comb groove 15. The first anti-protrusion plate 601 and the second anti-protrusion plate 602 are tightly fitted above the first comb tooth 14 and the second comb tooth 19 to prevent the first comb tooth 14 and the second comb tooth 19 from being squeezed. During the process, the expansion joint may lift up, ensuring driving safety. At the same time, the expansion rubber anti-blocking strip 605 can deform with the expansion and contraction of the steel section. Its tight sealing structure effectively prevents debris from entering the expansion joint and avoids debris accumulation affecting the expansion and contraction movement. The rubber buffer strip 5 plays a buffering role when the steel sections move relative to each other, absorbing and dispersing the impact force between the first steel section 1 and the second steel section 2, reducing the stress on the bridge structure. In addition, after the concrete solidifies, the fixing steel bar 8 and the resistance plate 7 are tightly bonded to the surrounding concrete, increasing the friction and adhesion between the first steel section 1 and the second steel section 2 and the bridge structure, ensuring the stability of the expansion joint device during long-term use.

[0032] Its beneficial effects are significant. By setting the anti-protrusion component 6, this application effectively prevents the first comb tooth 14 and the second comb tooth 19 from lifting up during the compression process, eliminating the safety hazards that may be caused by the lifting of the comb teeth, and ensuring the safety of vehicles and pedestrians on the bridge. The expansion rubber anti-blocking strip 605 avoids the accumulation of debris inside the expansion joint, ensuring that the first steel 1 and the second steel 2 can move normally in expansion and contraction, ensuring the expansion and contraction margin, enabling the bridge to better adapt to deformation caused by various factors, and improving the bridge's performance and durability. The cooperation between the guide shaft 13 and the guide sleeve 18 provides precise guidance for the relative movement of the first steel 1 and the second steel 2, greatly enhancing the stability of expansion and contraction, reducing the swaying and offset of the steel during expansion and contraction, and improving the overall reliability of the bridge expansion joint device. The rubber buffer strip 5 can play a good buffering role during the expansion and contraction deformation of the bridge, reducing the impact force between the first steel 1 and the second steel 2, protecting the bridge structure from damage, and extending the service life of the bridge. The design of the fixed steel bar 8 and the resistance plate 7 makes the connection between the expansion joint device and the bridge structure more solid, effectively resisting the influence of vehicle loads and vibrations.

Claims

1. A bridge expansion joint device for bridges, comprising a first steel section (1) and a second steel section (2); characterized in that, It also includes a base plate (3), a rubber buffer strip (5), and an anti-protrusion component (6); the first steel (1) and the second steel (2) are arranged opposite to each other, and multiple sets of first comb teeth (14) are evenly arranged on the top of the side of the first steel (1) near the second steel (2), and multiple sets of second comb teeth (19) are evenly arranged on the top of the side of the second steel (2) near the first steel (1). The multiple sets of second comb teeth (19) and the multiple sets of first comb teeth (14) are arranged alternately, and corresponding first comb teeth are opened between the multiple sets of second comb teeth (19). The first comb groove (20) of the tooth (14) is provided, and the second comb groove (15) corresponding to the second comb tooth (19) is opened between the multiple sets of first comb teeth (14). The upper part of the first steel (1) and the second steel (2) is provided with an anti-protrusion component (6) to prevent the comb teeth from being squeezed and raised. The opposite surfaces of the first steel (1) and the second steel (2) are provided with a rubber buffer strip (5) adapted to the expansion joint buffer. The lower ends of the first steel (1) and the second steel (2) are both provided with a base plate (3) for connecting the bridge pre-embedded groove.

2. A bridge expansion joint device for bridges according to claim 1, characterized in that, Both the first steel section (1) and the second steel section (2) have an inner groove (16) for accommodating the anti-protrusion component (6) on their tops. The anti-protrusion component (6) includes a first anti-protrusion plate (601) and a second anti-protrusion plate (602). The first anti-protrusion plate (601) and the second anti-protrusion plate (602) are located inside the two sets of inner grooves (16). The first anti-protrusion plate (601) and the second anti-protrusion plate (602) have a first mounting hole (17) at the corner of their surfaces. The bottom corners of the two sets of inner grooves (16) have a second mounting hole (603) corresponding to the first mounting hole (17).

3. A bridge expansion joint device for bridges according to claim 2, characterized in that, The first anti-protrusion plate (601) and the second anti-protrusion plate (602) are provided with slots (604) at their near ends. A telescopic rubber anti-blocking strip (605) is provided between the first anti-protrusion plate (601) and the second anti-protrusion plate (602). The telescopic rubber anti-blocking strip (605) is provided with corresponding slot strips (606) on both sides of the slot (604).

4. A bridge expansion joint device for bridges according to claim 1, characterized in that, The middle section of the opposite face of the first steel (1) and the second steel (2) is provided with an embedding groove (4), and the two sides of the rubber buffer strip (5) are provided with anti-detachment strips (501) that are embedded in the embedding groove (4).

5. A bridge expansion joint device for bridges according to claim 1, characterized in that, On the side of the base plate (3) at the lower end of the first steel (1) near the second steel (2), multiple sets of guide shafts (13) are evenly arranged, and on the side of the base plate (3) at the lower end of the second steel (2) near the first steel (1), multiple sets of guide sleeves (18) corresponding to the guide shafts (13) are evenly arranged.

6. A bridge expansion joint device for bridges according to claim 2, characterized in that, On the side of the first steel (1) and the second steel (2) that are far apart, multiple sets of fixed steel bars (8) are evenly provided, and multiple sets of baffle plates (7) are interspersed between the multiple sets of fixed steel bars (8).

7. A bridge expansion joint device for bridges according to claim 6, characterized in that, Multiple sets of pad grooves (9) are evenly opened on the surfaces of the two sets of substrates (3) that are far apart. A spacer (11) is attached to the inside of the pad groove (9). A fixing hole (10) is opened in the center of the multiple sets of pad grooves (9). The fixing hole (10) passes through the spacer (11). A mounting bolt (12) is provided inside the fixing hole (10).

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