Convenient noise reduction rubber telescopic device for roads and bridges
By using shock-absorbing rubber expansion joints and accordion-style rubber sound-insulating and water-stopping expansion joints on roads and bridges, combined with steel plate structures, the problem of high noise from bridge expansion joints has been solved, achieving both noise reduction and water-stopping effects.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-02
- Publication Date
- 2026-03-03
AI Technical Summary
Existing road and bridge expansion joints are noisy and have high rigidity, making it difficult to maintain good expansion performance while reducing noise.
By using shock-absorbing rubber expansion joints and accordion-style rubber sound-insulating and water-stopping expansion joints, combined with L-shaped steel, supporting connecting steel plates and other components, a noise-reducing rubber expansion device is formed, which is suitable for expansion and contraction of less than 200mm, reducing noise and maintaining good water-stopping performance.
It achieves noise reduction on roads and bridges while maintaining good expansion and contraction performance and water-stopping properties, making it suitable for urban viaducts.
Smart Images
Figure CN223963815U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of roads and bridges, and in particular to a convenient noise-reducing rubber expansion joint for roads and bridges. Background Technology
[0002] Currently, expansion joints used on urban elevated bridges both domestically and internationally typically employ modular steel profiles and comb-tooth steel plates, with U-shaped waterstops as accessories.
[0003] Commonly used cantilever and simply supported types, where the panels are machined into interlocking comb-like teeth, are collectively known as comb-tooth steel plate expansion joints. They are widely used in bridges, but they are wide, rigid, and relatively noisy. In addition, modular expansion devices, which are equipped with 80mm expansion grooves, are prone to generating noise due to their high rigidity.
[0004] Therefore, there is a need for a convenient noise-reducing rubber expansion joint for roads and bridges that can solve the above problems. Summary of the Invention
[0005] The purpose of this utility model is to provide a convenient noise-reducing rubber expansion joint for roads and bridges, which addresses the shortcomings of the prior art. This noise-reducing rubber expansion joint is equipped with a shock-absorbing rubber expansion body and an accordion-style rubber sound-insulating and water-stopping expansion body. While solving the expansion and contraction problem of roads and bridges, it also effectively reduces the generation of noise.
[0006] The objective of this utility model is achieved through the following technical solution:
[0007] A convenient noise-reducing rubber expansion joint for roads and bridges is disclosed. The expansion joint is installed at the joint of a road or bridge. It includes a shock-absorbing rubber expansion body, an L-shaped steel beam, a supporting connecting steel plate, a displacement supporting steel plate, a trapezoidal connecting steel plate, an anchoring steel plate, a fixed supporting steel plate, a noise-reducing rubber support pad, an accordion-style rubber sound-insulating and water-stopping expansion joint, and a positioning steel plate. The shock-absorbing rubber expansion body is positioned directly above the joint. Both sides of the shock-absorbing rubber expansion body are respectively mounted on the L-shaped steel beam, and the middle part of the shock-absorbing rubber expansion body is installed on the supporting connecting steel beam. On the plate, the supporting connecting steel plate is set on the displacement supporting steel plate, the L-shaped steel is installed on the trapezoidal connecting steel plate and the displacement supporting steel plate, the trapezoidal connecting steel plate is welded to the anchoring steel plate, one end of the fixed supporting steel plate is located at the bottom of the trapezoidal connecting steel plate, and the other end is curved and located at the top of the side of the bellows-type rubber sound insulation and water-stop expansion body. The noise-reducing rubber supporting pad is provided between the displacement supporting steel plate and the fixed supporting steel plate, and both ends of the bellows-type rubber sound insulation and water-stop expansion body are respectively fixed to the positioning steel plates located on both sides of the joint.
[0008] The anchoring steel plate is welded to the pre-embedded reinforcing bars of the gate shape, and several pre-embedded reinforcing bars of the gate shape are provided along the transverse direction of the road or the bridge.
[0009] The road or the bridge has a number of connecting steel bars arranged longitudinally and a number of distribution steel bars arranged transversely. A single connecting steel bar is arranged transversely and a single distribution steel bar is arranged longitudinally. The connecting steel bars are respectively connected to the distribution steel bars, the portal-shaped embedded steel bars and the anchor steel plates.
[0010] The top of the shock-absorbing rubber expansion joint is provided with corrugated pressure-bearing steel plates on both sides.
[0011] The bellows-style rubber soundproof and water-stopping expansion joint and the positioning steel plate are connected by an insertion type.
[0012] The L-shaped steel is connected to the fixed support steel plate by connecting bolts and locked by lock nuts.
[0013] The supporting connecting steel plate and the displacement supporting steel plate are connected by positioning connecting bolts.
[0014] The displacement support steel plate, the fixed support steel plate, and the noise-reducing rubber support pad are connected by lower positioning bolts.
[0015] The surface of the shock-absorbing rubber expansion joint is provided with noise-reducing patterns.
[0016] The advantages of this utility model are: it can be applied to roads and elevated bridges with an expansion range of less than 200mm, and has the advantages of good stability, good noise reduction performance, and good water-stopping properties, making it especially suitable for use on urban elevated roads. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the installation of the noise-reducing rubber telescopic device of this utility model;
[0018] Figure 2 for Figure 1 Cross-sectional view of AA in the middle;
[0019] like Figures 1-2 As shown in the figure, the markings represent:
[0020] 1. Anchoring steel plate; 2. Trapezoidal connecting steel plate; 3. Connecting bolts; 4. Shock-absorbing rubber expansion joint; 5. Noise-reducing rubber support pad; 6. Support connecting steel plate; 7. Positioning connecting bolts; 8. Displacement support steel plate; 9. Fixed support steel plate; 10. Corrugated pressure-bearing steel plate; 11. L-shaped steel; 12. Locking nut; 13. Lower positioning bolt; 14. Positioning steel plate; 15. Bellows-type rubber sound insulation and water-stopping expansion joint; 16. Connecting steel bars; 17. Door-shaped embedded steel bars; 18. Distribution steel bars.
[0021] Seam B. Detailed Implementation
[0022] The features of this utility model and other related features will be further described in detail below with reference to the accompanying drawings and embodiments, so as to facilitate the understanding of those skilled in the art:
[0023] Example: Figures 1-2 As shown, this embodiment relates to a convenient noise-reducing rubber expansion joint for roads and bridges. This noise-reducing rubber expansion joint is installed at joint B in a road or bridge, covering the upper part of joint B and flush with the road surface paving. It provides waterproofing, noise reduction, and expansion functions. The noise-reducing rubber expansion joint mainly includes a shock-absorbing rubber expansion body 4, an L-shaped steel 11, a supporting connecting steel plate 6, a displacement supporting steel plate 8, a trapezoidal connecting steel plate 2, an anchoring steel plate 1, a fixed supporting steel plate 9, a noise-reducing rubber support pad 5, an accordion-style rubber sound-insulating and water-stopping expansion body 15, and a positioning steel plate 14. The shock-absorbing rubber expansion body 14 is located directly above joint B, and its surface is decorated with noise-reducing patterns (diamond patterns). Vehicle tires contact the surface of the noise-reducing rubber expansion body 14, reducing noise generated during contact. It can be easily replaced after long-term use. Corrugated pressure-bearing steel plates 10 are provided on both sides of the top of the shock-absorbing rubber expansion body 14. Both sides of the shock-absorbing rubber expansion joint 14 are respectively mounted on L-shaped steel 11. The middle part of the shock-absorbing rubber expansion joint 14 is mounted on the supporting connecting steel plate 6, which is mounted on the displacement supporting steel plate 8. The L-shaped steel 11 is mounted on the trapezoidal connecting steel plate 2 and the displacement supporting steel plate 8. The trapezoidal connecting steel plate 2 is welded to the anchoring steel plate 1, and the anchoring steel plate 1 is welded to the portal-shaped embedded steel bar 17. Several portal-shaped embedded steel bars 17 are provided along the transverse direction of the road or bridge. Several connecting steel bars 16 are arranged longitudinally and several distribution steel bars 18 are arranged transversely along the road or bridge. A single connecting steel bar 16 is arranged transversely, and a single distribution steel bar 18 is arranged longitudinally. The connecting steel bars 16 are connected to the distribution steel bars 18, the portal-shaped embedded steel bars 17, and the anchoring steel plate 1, respectively, to meet the needs of the joint B to deform due to changes in temperature and live load. One end of the fixed supporting steel plate 9 is located at the bottom of the trapezoidal connecting steel plate 2, and the other end is curved and located at the top of the side of the accordion-type rubber sound insulation and water-stop expansion joint 15. A noise-reducing rubber support pad 5 is provided between the displacement support steel plate 8 and the fixed support steel plate 9. The two ends of the accordion-type rubber sound-insulating and water-stopping expansion joint 15 are fixed to the positioning steel plates 14 on both sides of the joint B. The accordion-type rubber sound-insulating and water-stopping expansion joint 15 and the positioning steel plates 14 are connected by an insertion method, and the positioning steel plates 14 have an L-shaped structure. The vertical vehicle load is transferred through the shock-absorbing rubber expansion joint 4 to the displacement support steel plate 8 and the trapezoidal connecting steel plate 2, then to the noise-reducing rubber support pad 5, and finally to the fixed support steel plate 9 for support.
[0024] like Figure 2As shown, the L-shaped steel 11 is connected to the fixed support steel plate 9 by connecting bolts 3 and locked by lock nuts 12. The support connecting steel plate 6 is connected to the displacement support steel plate 8 by positioning connecting bolts 7. The displacement support steel plate 8, the fixed support steel plate 9, and the noise-reducing rubber support pad 5 are connected by lower positioning bolts 13.
[0025] The beneficial technical effects of this embodiment are: it can be applied to roads and elevated bridges with an expansion range of less than 200mm, and has the advantages of good stability, good noise reduction performance and good water-stopping properties, and is especially suitable for use on urban elevated roads.
[0026] Although the above embodiments have described the concept and embodiments of the present invention in detail with reference to the accompanying drawings, those skilled in the art will recognize that various improvements and modifications can still be made to the present invention without departing from the scope of the claims, and therefore will not be elaborated here.
Claims
1. A convenient noise-reducing rubber expansion joint for roads and bridges, characterized in that: The noise-reducing rubber expansion joint is installed at the joint of a road or bridge. The noise-reducing rubber expansion joint includes a shock-absorbing rubber expansion body, an L-shaped steel beam, a supporting connecting steel plate, a displacement supporting steel plate, a trapezoidal connecting steel plate, an anchoring steel plate, a fixed supporting steel plate, a noise-reducing rubber support pad, an accordion-style rubber sound-insulating and water-stopping expansion joint, and a positioning steel plate. The shock-absorbing rubber expansion body is located directly above the joint. Both sides of the shock-absorbing rubber expansion body are respectively mounted on the L-shaped steel beam. The middle part of the shock-absorbing rubber expansion body is installed on the supporting connecting steel plate. A steel plate is placed on the displacement support steel plate, and the L-shaped steel is installed on the trapezoidal connecting steel plate and the displacement support steel plate. The trapezoidal connecting steel plate is welded to the anchoring steel plate. One end of the fixed support steel plate is located at the bottom of the trapezoidal connecting steel plate, and the other end is curved and located at the top of the side of the bellows-type rubber sound insulation and water-stop expansion joint. The noise-reducing rubber support pad is provided between the displacement support steel plate and the fixed support steel plate. Both ends of the bellows-type rubber sound insulation and water-stop expansion joint are fixed to the positioning steel plates located on both sides of the joint.
2. The convenient noise-reducing rubber expansion joint for roads and bridges as described in claim 1, characterized in that: The anchoring steel plate is welded to the pre-embedded reinforcing bars of the gate shape, and several pre-embedded reinforcing bars of the gate shape are provided along the transverse direction of the road or the bridge.
3. The convenient noise-reducing rubber expansion joint for roads and bridges as described in claim 2, characterized in that: The road or the bridge has a number of connecting steel bars arranged longitudinally and a number of distribution steel bars arranged transversely. A single connecting steel bar is arranged transversely and a single distribution steel bar is arranged longitudinally. The connecting steel bars are respectively connected to the distribution steel bars, the portal-shaped embedded steel bars and the anchor steel plates.
4. The convenient noise-reducing rubber expansion joint for roads and bridges as described in claim 1, characterized in that: The top of the shock-absorbing rubber expansion joint is provided with corrugated pressure-bearing steel plates on both sides.
5. A convenient noise-reducing rubber expansion joint for roads and bridges as described in claim 1, characterized in that: The bellows-style rubber soundproof and water-stopping expansion joint and the positioning steel plate are connected by an insertion type.
6. The convenient noise-reducing rubber expansion joint for roads and bridges as described in claim 1, characterized in that: The L-shaped steel is connected to the fixed support steel plate by connecting bolts and locked by lock nuts.
7. A convenient noise-reducing rubber expansion joint for roads and bridges as described in claim 1, characterized in that: The supporting connecting steel plate and the displacement supporting steel plate are connected by positioning connecting bolts.
8. A convenient noise-reducing rubber expansion joint for roads and bridges as described in claim 1, characterized in that: The displacement support steel plate, the fixed support steel plate, and the noise-reducing rubber support pad are connected by lower positioning bolts.
9. A convenient noise-reducing rubber expansion joint for roads and bridges as described in claim 1, characterized in that: The surface of the shock-absorbing rubber expansion joint is provided with noise-reducing patterns.