Bridge expansion joint structure
By using embedded steel bars, F-shaped side beams, extension plates and waterproof coil layers in the bridge expansion joints, the problem of accumulation of rubber strips due to sand and stones is solved, and the stability and waterproof performance of rubber strips are improved. , extends the service life of bridge expansion joints.
Patent Information
- Application Number
- CN202420889330.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-26
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-04-26
AI Technical Summary
The rubber strips in the bridge expansion joints are damaged by the accumulation of sand and stone, resulting in a decrease in sealing, shortening of service life, and it is difficult to prevent rainwater from seeping in.
A bridge expansion joint structure was designed, using embedded steel bars, F-shaped side beams, extension plates, magnetic blocks, springs and waterproof coil layers. Through the interlaced setting of extension plates, magnetic reinforcement and elastic connection, it avoids sand and stones. Accumulate and improve the stability and waterproof performance of sealed rubber strips.
It effectively avoids damage caused by sand and stone, improves the service life and sealing effect of sealing rubber strips, ensures the waterproof performance of the bridge expansion joints, and extends the service life of the overall structure.
Smart Images
Figure CN222251733U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of bridge structures, in particular to a bridge expansion joint structure. Background Art
[0002] Bridge expansion joints refer to expansion joints that are usually set between the two beam ends, between the beam ends and the abutments, or at the hinged position of the bridge to meet the requirements of bridge deck deformation. The expansion joints are required to be able to freely expand and contract in two directions parallel and perpendicular to the bridge axis, and to be firm and reliable. Vehicles should pass smoothly without sudden jumps and noise; they should be able to prevent rainwater and garbage and soil from infiltrating and blocking; installation, inspection, maintenance, and removal of dirt should be simple and convenient. At the expansion joints, the railings and the bridge deck pavement should be disconnected. The expansion joints of bridges are used to adjust the displacement and connection between the superstructures caused by vehicle loads and bridge construction materials. Once the expansion device of the skew bridge is destroyed, it will seriously affect the speed, comfort and safety of driving, and even cause driving safety accidents. Bridge expansion joints are used to prevent damage to the bridge structure caused by thermal expansion and contraction caused by temperature changes. The joints are opened between the two beam ends, between the beam ends and the abutments, or at the hinged position of the bridge. In the expansion joint structure in the related technology, rubber strips are usually used as stretching materials to seal the expansion joints, thereby reducing the possibility of water entering the expansion joints.
[0003] During daily use of bridge expansion joints, some sand and stone debris will gradually accumulate on the rubber strips. When the bridge expands and contracts due to temperature differences and the rubber strips are folded, the sand and stone debris can easily damage the rubber strips, causing the sealing of the expansion joint structure to decrease, thereby reducing the service life of the bridge expansion joints. Therefore, a bridge expansion joint structure is needed that can cover the top of the rubber strip to prevent sand and stone from accumulating on the top of the rubber strip and causing damage to it, thereby increasing the service life of the rubber strip and ensuring its use effect. Utility Model Content
[0004] The purpose of the utility model is to provide a bridge expansion joint structure, which has the advantage of being able to cover the top of the rubber strip to prevent sand and gravel from accumulating on the top of the rubber strip and causing damage to it, thereby increasing the service life of the rubber strip and ensuring its use effect, thereby solving the above-mentioned technical problems.
[0005] The technical solution of the utility model for solving the above-mentioned technical problems is as follows: a bridge expansion joint structure, which includes embedded steel bars one, embedded steel bars two, hollow slab transverse steel bars and anchor steel bars: a plurality of threaded steel bars are arranged on the outer side of the anchor steel bars, an F-shaped side beam and an anchor steel plate are arranged on the outer side of the anchor steel bars, a hollow slab is arranged below the transverse steel bars of the hollow slab on the left side, the transverse steel bars of the hollow slab are fixedly connected to the hollow slab, a plurality of extension plates are fixedly connected to the surface of the F-shaped side beam, a plate groove matching the extension plate is provided on the surface of the F-shaped side beam, two symmetrically arranged hole blocks are integrally formed on the surface of the extension plate, a threaded rod is welded on the surface of the F-shaped side beam, the end of the threaded rod passes through the outer side of the hole block, a nut block is threadedly connected to the surface of the threaded rod, a rubber strip groove is provided on the surface of the F-shaped side beam, and a sealing rubber strip is commonly provided between the left and right rubber strip grooves.
[0006] The bridge expansion joint structure as described above in the utility model is further characterized in that: the surfaces of the embedded steel bar 1, the embedded steel bar 2, the anchor steel bar and the threaded steel bar are jointly cast with a steel fiber concrete layer, the ends of the embedded steel bar 1 and the embedded steel bar 2 are both penetrated into the precast beam, and the embedded steel bar 1 and the embedded steel bar 2 are both fixedly connected to the precast beam by embedding.
[0007] The bridge expansion joint structure as described above of the utility model is further characterized in that: a structural adhesive is commonly filled between the nut block and the hole block, and a welding sheet is commonly welded between the nut block and the hole block.
[0008] The bridge expansion joint structure of the utility model as described above is further characterized in that: a first magnetic block is embedded in the inner wall of the rubber strip groove, a second magnetic block is embedded in the surface of the sealing rubber strip, and the magnetic properties of the first magnetic block and the second magnetic block are opposite.
[0009] The bridge expansion joint structure as described above of the utility model is further characterized in that: a spring is fixedly connected between the left and right F-shaped side beams, the surface of the spring is filled with a flexible waterproof layer, and the surface of the flexible waterproof layer is coated with a flexible adhesive layer.
[0010] The bridge expansion joint structure as described above of the utility model is further characterized in that: a waterproof coiled material layer is adhered to the surface of the flexible adhesive layer, the waterproof coiled material layer is a curved panel, and a plurality of elliptical holes are opened on the surface of the waterproof coiled material layer.
[0011] The bridge expansion joint structure as described above of the utility model is further characterized in that: the embedded steel bar 1, the embedded steel bar 2, the anchor steel bar and the threaded steel bar are all pre-fixed by steel wires.
[0012] The beneficial effects of the utility model are:
[0013] 1. The utility model adopts a staggered arrangement of multiple extension plates. When two F-shaped side beams are close to or away from each other due to the temperature difference, the extension plates can move in the inner cavity of the plate groove, and then the multiple extension plates cover the top of the sealing rubber strip, which can prevent the accumulation of sand and gravel on the top of the bridge deck on the surface of the sealing rubber strip. At the same time, through the coordinated use of hole blocks, threaded rods and nut blocks, the stability of the extension plates installed on the surface of the F-shaped side beams can be further improved, and the extension plates can be prevented from being skewed or shaken. The rubber strip can be covered to prevent the accumulation of sand and gravel on the top of the rubber strip to cause damage to it, thereby improving the service life of the rubber strip and ensuring its use effect.
[0014] 2. The utility model can lock the threaded connection between the nut block and the threaded rod by using a structural adhesive and a welding sheet, thereby preventing the nut block from loosening and detaching from the threaded rod due to external force vibration, thereby ensuring the stability of the nut block locking the threaded rod and the hole block.
[0015] 3. The utility model further reinforces the position of the sealing rubber strip in the inner wall of the rubber strip groove by using the magnetic block 1 and the magnetic block 2, thereby reducing the possibility of displacement of the sealing rubber strip in the rubber strip groove, thereby ensuring the use effect of the sealing rubber strip.
[0016] 4. The utility model can realize elastic connection between two F-shaped side beams through the coordinated use of springs, flexible waterproof layers and waterproof membrane layers, and then the waterproof membrane layer can receive the bottom of the sealing rubber strip, thereby preventing rainwater from entering the bottom when the sealing rubber strip is damaged, thereby improving the waterproof protection between the two F-shaped side beams.
[0017] 5. The utility model increases the elasticity of the waterproof roll layer by setting the elliptical hole, ensures the use effect of the waterproof roll layer after repeated deformation, and further increases the service life of the waterproof roll layer. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The above and / or other advantages of the present invention will become clearer and easier to understand through the detailed description made in conjunction with the following drawings, which are only schematic and do not limit the present invention, wherein:
[0019] Figure 1 This is a schematic diagram of the structure of an embodiment of the utility model;
[0020] Figure 2 This is an embodiment of the utility model Figure 1 A partial enlarged view of point A;
[0021] Figure 3 This is an embodiment of the utility model Figure 1 A partial enlarged view of point B in the middle;
[0022] Figure 4 This is an embodiment of the utility model Figure 1 A partial enlarged view of point C in the middle;
[0023] Figure 5 It is a three-dimensional schematic diagram of a threaded rod and a nut block according to an embodiment of the utility model.
[0024] In the accompanying drawings, the components represented by the reference numerals are listed as follows:
[0025] 1. Embedded steel bar 1, 2. Embedded steel bar 2, 3. Horizontal steel bar of hollow slab, 4. Anchor steel bar, 5. Threaded steel bar, 6. F-shaped side beam, 7. Anchor steel plate, 8. Steel fiber concrete layer, 9. Extension plate, 10. Plate groove, 11. Hole block, 12. Threaded rod, 13. Nut block, 14. Structural adhesive, 15. Welding sheet, 16. Rubber strip groove, 17. Sealing rubber strip, 18. Magnetic block 1, 19. Magnetic block 2, 20. Spring, 21. Flexible waterproof layer, 22. Flexible adhesive layer, 23. Waterproof membrane layer, 24. Elliptical hole. DETAILED DESCRIPTION
[0026] Hereinafter, embodiments of the bridge expansion joint structure of the present invention will be described with reference to the accompanying drawings.
[0027] The embodiments described herein are specific embodiments of the present invention, which are used to illustrate the concept of the present invention, are explanatory and exemplary, and should not be interpreted as limiting the embodiments of the present invention and the scope of the present invention. In addition to the embodiments described herein, those skilled in the art can also adopt other obvious technical solutions based on the claims and the contents disclosed in the specification of this application, including technical solutions that adopt any obvious replacement and modification of the embodiments described herein.
[0028] The drawings of this specification are schematic diagrams, which assist in explaining the concept of the utility model and schematically show the shapes of various parts and their mutual relationships. Please note that in order to clearly show the structure of various components of the embodiments of the utility model, the drawings are not drawn according to the same scale. The same reference numerals are used to represent the same parts.
[0029] The following is combined with Figure 1-5 This application is described in further detail.
[0030] Embodiment 1:
[0031] Figure 1-5A bridge expansion joint structure of an embodiment of the utility model is shown, which includes embedded steel bars 1, embedded steel bars 2, hollow slab transverse steel bars 3 and anchor steel bars 4: a plurality of threaded steel bars 5 are arranged on the outer side of the anchor steel bars 4, an F-shaped side beam 6 and an anchor steel plate 7 are arranged on the outer side of the anchor steel bars 4; a hollow slab is arranged below the hollow slab transverse steel bars 3 on the left side, and the hollow slab transverse steel bars 3 are fixedly connected to the hollow slab; a plurality of extension plates 9 are fixedly connected to the surface of the F-shaped side beam 6; a plate groove 10 adapted to the extension plate 9 is opened on the surface of the F-shaped side beam 6; two symmetrically arranged hole blocks 11 are integrally formed on the surface of the extension plate 9; a threaded rod 12 is welded on the surface of the F-shaped side beam 6; the end of the threaded rod 12 passes through the outer side of the hole block 11; a nut block 13 is threadedly connected to the surface of the threaded rod 12; a rubber strip groove 16 is opened on the surface of the F-shaped side beam 6, and a sealing rubber strip 17 is commonly arranged between the left and right rubber strip grooves 16.
[0032] Embodiment 2:
[0033] Figure 1-5The bridge expansion joint structure of an embodiment of the utility model is shown, the surfaces of the embedded steel bar 1, the embedded steel bar 2, the anchor steel bar 4 and the threaded steel bar 5 are cast with a steel fiber concrete layer 8, the ends of the embedded steel bar 1 and the embedded steel bar 2 are penetrated into the prefabricated beam, the embedded steel bar 1 and the embedded steel bar 2 are connected to the prefabricated beam by pre-embedded fixing, the nut block 13 and the hole block 11 are filled with structural glue 14, and the nut block 13 and the hole block 11 are welded with a welding sheet 15. By using the structural glue 14 and the welding sheet 15 together, the nut can be fixed. The threaded connection between the block 13 and the threaded rod 12 is locked, so that the nut block 13 is prevented from loosening and disengaging from the threaded rod 12 due to external force vibration, thereby ensuring the stability of the nut block 13 locking the threaded rod 12 and the hole block 11. A magnetic block 18 is embedded in the inner wall of the rubber strip groove 16, and a magnetic block 2 19 is embedded in the surface of the sealing rubber strip 17. The magnetic properties of the magnetic block 18 and the magnetic block 2 19 are opposite. Through the coordinated use of the magnetic block 18 and the magnetic block 2 19, the position of the sealing rubber strip 17 in the inner wall of the rubber strip groove 16 is further reinforced, reducing The possibility of displacement of the sealing rubber strip 17 in the rubber strip groove 16 is reduced, thereby ensuring the use effect of the sealing rubber strip 17. A spring 20 is fixedly connected between the left and right F-shaped side beams 6. The surface of the spring 20 is filled with a flexible waterproof layer 21. The surface of the flexible waterproof layer 21 is coated with a flexible adhesive layer 22. The surface of the flexible adhesive layer 22 is pasted with a waterproof roll material layer 23. The waterproof roll material layer 23 is a curved panel. The spring 20, the flexible waterproof layer 21 and the waterproof roll material layer 23 are used in combination to realize the elastic connection between the two F-shaped side beams 6, and then the waterproof roll material layer 23 can support the bottom of the sealing rubber strip 17, avoiding the situation that rainwater enters the bottom when the sealing rubber strip 17 is damaged, thereby improving the waterproof protection between the two F-shaped side beams 6. A plurality of elliptical holes 24 are opened on the surface of the waterproof membrane layer 23. The embedded steel bars 1, the embedded steel bars 2, the anchoring steel bars 4 and the threaded steel bars 5 are all pre-fixed by steel wires. The setting of the elliptical holes 24 increases the elasticity of the waterproof membrane layer 23, ensures the use effect of the waterproof membrane layer 23 after repeated deformation, and thereby improves the service life of the waterproof membrane layer 23.
[0034] Working principle: When the utility model is used, the user staggers the plurality of extension plates 9. When the two F-shaped side beams 6 are close to or away from each other due to the temperature difference, the extension plates 9 can move in the inner cavity of the plate groove 10, and then the plurality of extension plates 9 cover the top of the sealing rubber strip 17, so as to avoid the accumulation of sand and gravel on the top of the bridge deck on the surface of the sealing rubber strip 17. At the same time, through the coordinated use of the hole block 11, the threaded rod 12 and the nut block 13, the stability of the extension plate 9 installed on the surface of the F-shaped side beam 6 can be further improved, and the extension plate 9 can be avoided from being skewed or shaken, and the stability of the extension plate 9 when the staggered movement is guaranteed. At the same time, through the setting of the waterproof membrane layer 23, the bottom of the sealing rubber strip 17 can be waterproofed, and the leakage of rainwater to the bottom when the sealing rubber strip 17 is damaged can be avoided, thereby improving the waterproof protection of the expansion joint structure, realizing the covering of the top of the rubber strip to avoid the accumulation of sand and gravel on the top of the rubber strip to cause damage to it, thereby improving the service life of the rubber strip and ensuring its use effect.
[0035] To sum up: the expansion joint structure of the bridge is staggered with multiple extension plates 9. When the two F-shaped side beams 6 are close to or away from each other due to the temperature difference, the extension plates 9 can move in the inner cavity of the plate groove 10, and then the multiple extension plates 9 cover the top of the sealing rubber strip 17, which can prevent sand and gravel on the top of the bridge deck from accumulating on the surface of the sealing rubber strip 17. At the same time, through the coordinated use of the hole block 11, the threaded rod 12 and the nut block 13, the stability of the extension plate 9 installed on the surface of the F-shaped side beam 6 can be further improved, and the extension plate 9 can be prevented from being skewed or shaken. The rubber strip can be covered to prevent sand and gravel from accumulating on the top of the rubber strip and causing damage to it, thereby increasing the service life of the rubber strip and ensuring its use effect.
[0036] The technical features disclosed above are not limited to the disclosed combinations with other features. Those skilled in the art may also make other combinations between the technical features according to the purpose of the utility model to achieve the purpose of the utility model.
Claims
1. A bridge expansion joint structure, characterized in that: The invention comprises a pre-embedded steel bar 1 (1), a pre-embedded steel bar 2 (2), a hollow slab transverse steel bar (3) and an anchor steel bar (4): a plurality of threaded steel bars (5) are arranged on the outside of the anchor steel bar (4), an F-shaped side beam (6) and an anchor steel plate (7) are arranged on the outside of the anchor steel bar (4); a hollow slab is arranged below the hollow slab transverse steel bar (3) on the left side, the hollow slab transverse steel bar (3) is fixedly connected to the hollow slab, a plurality of extension plates (9) are fixedly connected to the surface of the F-shaped side beam (6), and the F-shaped side beam (6) is provided with a plurality of extension plates (9). A plate groove (10) adapted to the extension plate (9) is formed on the surface of the extension plate (9), two symmetrically arranged hole blocks (11) are integrally formed on the surface of the F-shaped side beam (6), a threaded rod (12) is welded on the surface of the F-shaped side beam (6), the end of the threaded rod (12) penetrates the outer side of the hole block (11), a nut block (13) is threadedly connected on the surface of the threaded rod (12), a rubber strip groove (16) is formed on the surface of the F-shaped side beam (6), and a sealing rubber strip (17) is commonly arranged between the left and right rubber strip grooves (16).
2. A bridge expansion joint structure according to claim 1, characterized in that: The surfaces of the embedded steel bars (1), (2), (4), (5), and (6) are cast with a steel fiber concrete layer (8); the ends of the embedded steel bars (1) and (2) are inserted into the interior of the prefabricated beam; and the embedded steel bars (1) and (2) are connected to the prefabricated beam by embedding.
3. A bridge expansion joint structure according to claim 2, characterized in that: A structural adhesive (14) is commonly filled between the nut block (13) and the hole block (11), and a welding sheet (15) is commonly welded between the nut block (13) and the hole block (11).
4. A bridge expansion joint structure according to claim 3, characterized in that: A first magnetic block (18) is embedded in the inner wall of the rubber strip groove (16), and a second magnetic block (19) is embedded in the surface of the sealing rubber strip (17), wherein the first magnetic block (18) and the second magnetic block (19) have opposite magnetic properties.
5. A bridge expansion joint structure according to claim 4, characterized in that: A spring (20) is fixedly connected between the left and right F-shaped side beams (6); the surface of the spring (20) is filled with a flexible waterproof layer (21); and the surface of the flexible waterproof layer (21) is coated with a flexible adhesive layer (22).
6. A bridge expansion joint structure according to claim 5, characterized in that: A waterproof coiled material layer (23) is adhered to the surface of the flexible adhesive layer (22); the waterproof coiled material layer (23) is a curved panel; and a plurality of elliptical holes (24) are provided on the surface of the waterproof coiled material layer (23).
7. A bridge expansion joint structure according to claim 6, characterized in that: The embedded steel bar one (1), the embedded steel bar two (2), the anchor steel bar (4) and the threaded steel bar (5) are all pre-fixed by steel wires.