CN220867971U - Expansion joint device applied to new and old bridges - Google Patents
Expansion joint device applied to new and old bridges Download PDFInfo
- Publication number
- CN220867971U CN220867971U CN202322385343.1U CN202322385343U CN220867971U CN 220867971 U CN220867971 U CN 220867971U CN 202322385343 U CN202322385343 U CN 202322385343U CN 220867971 U CN220867971 U CN 220867971U
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- Prior art keywords
- shaped steel
- new
- cavity
- old
- expansion joint
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 91
- 239000010959 steel Substances 0.000 claims abstract description 91
- 229920001971 elastomer Polymers 0.000 claims abstract description 13
- 239000000806 elastomer Substances 0.000 claims abstract description 10
- 230000003014 reinforcing effect Effects 0.000 claims description 13
- 238000004873 anchoring Methods 0.000 claims description 9
- 229920002635 polyurethane Polymers 0.000 claims description 4
- 239000004814 polyurethane Substances 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 2
- 239000010426 asphalt Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
Landscapes
- Road Paving Structures (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The utility model discloses an expansion joint device applied to new and old bridges. In the alternating process of new and old bridges, the existing longitudinal joint cavity part adopts a concrete structure, and the driving comfort is poor due to rigid connection. The utility model comprises a first E-shaped steel arranged at the end part of a new beam body and a second E-shaped steel arranged at the end part of an old beam body, wherein the back surfaces of the first E-shaped steel and the second E-shaped steel are oppositely arranged; and a first cavity is formed between the first E-shaped steel and the second E-shaped steel, a second cavity is formed between the first E-shaped steel and the new beam body and between the second E-shaped steel and the old beam body, and the first cavity and the second cavity are respectively filled with an elastomer. The utility model forms flexible connection between the new bridge and the old bridge, effectively avoids the deformation of the new bridge or the old bridge structure, causes the deformation of the other part, and has better driving comfort.
Description
Technical Field
The utility model belongs to the technical field of bridge expansion joints, and particularly relates to an expansion joint device applied to new and old bridges.
Background
The bridge expansion joint is an expansion joint which is usually arranged between two beam ends, between a beam end and a bridge abutment or at the hinge position of a bridge in order to meet the requirement of bridge deck deformation. However, in the alternating process of the new bridge and the old bridge, the existing longitudinal joint cavity is of a concrete structure and is in rigid connection, and when the new bridge or the old bridge is structurally deformed, the other part is easily deformed by the connection mode, so that the driving comfort level is poor.
Disclosure of Invention
In order to make up the defects of the prior art, the utility model provides the expansion joint device applied to the new bridge and the old bridge, so that the connection between the new bridge and the old bridge forms flexible connection, the occurrence of the deformation condition of the other party caused by the deformation of the new bridge or the old bridge structure is effectively avoided, and the driving comfort is better.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
The expansion joint device applied to the new bridge comprises a first E-shaped steel arranged at the end part of a new beam body and a second E-shaped steel arranged at the end part of the old beam body, wherein the back surfaces of the first E-shaped steel and the second E-shaped steel are oppositely arranged;
A first cavity is formed between the first E-shaped steel and the second E-shaped steel, a second cavity is formed between the first E-shaped steel and the new beam body and between the second E-shaped steel and the old beam body, and elastic bodies are respectively filled in the first cavity and the second cavity;
further, the elastomer is polyurethane or rubber.
Further, the back of the first E-shaped steel and the back of the second E-shaped steel are respectively welded with horizontal reinforcing ribs.
Further, transverse through holes are formed in grooves in the first E-shaped steel and the second E-shaped steel, and the through holes are communicated with the first cavity and the second cavity.
Further, fixing plates are respectively arranged at the bottoms of the two cavities II, and one ends of the fixing plates are respectively connected with the first E-shaped steel and the second E-shaped steel in a welding mode;
The other end of the fixing plate is connected with a position anchoring steel bar which is connected with embedded steel bars in the beam body.
Further, the transverse steel bars are welded on the anchoring steel bars and are arranged along the width direction of the beam body.
Further, the fixed plate on the first E-shaped steel is positioned at the bottom of the left end of the first E-shaped steel, and the fixed plate on the second E-shaped steel is positioned at the bottom of the right end of the second E-shaped steel.
Further, the top surface of the elastomer is flush with the top surface of the pavement layer.
The utility model has the beneficial effects that:
1) According to the utility model, the first E-shaped steel and the second E-shaped steel are fixedly arranged on the new bridge and the old bridge respectively, the back surfaces of the two E-shaped steels are oppositely arranged, a first cavity is formed between the back surfaces of the two E-shaped steels, a second cavity is formed between the two E-shaped steels and the corresponding beam bodies respectively, and then elastic bodies are filled in the first cavity and the second cavity simultaneously, so that the connection between the new bridge and the old bridge forms flexible connection, the deformation of the structure of the new bridge or the old bridge is effectively avoided, the deformation of the other side is caused, and the travelling comfort is good;
2) According to the utility model, the horizontal reinforcing ribs are welded on the back surfaces of the two E-shaped steels respectively, and are positioned in the first cavity, and after the elastic body is filled, the vertical bearing capacity of the elastic body in the first cavity can be improved by the reinforcing ribs, so that the risk of collapse of the expansion joint device under vertical load is not easy to occur, and the driving safety is facilitated;
3) According to the utility model, the first cavity and the second cavity are communicated through the through hole, so that the elastic bodies in the first cavity and the second cavity are integrated, and the bearing capacity is better.
Drawings
FIG. 1 is a schematic cross-sectional view of the present utility model;
FIG. 2 is a schematic view of the structure of the present utility model without the elastomer;
In the figure, 1-new beam body, 2-old beam body, 3-first E-shaped steel, 4-second E-shaped steel, 5-first cavity, 6-second cavity, 7-reinforcing rib, 8-through hole, 9-pavement layer, 10-anchoring steel bar, 11-embedded steel bar, 12-crossing steel bar, 13-elastomer and 14-fixed plate.
Detailed Description
The present utility model will be described in detail with reference to the following embodiments.
As shown in fig. 1 and 2, the utility model comprises a first E-shaped steel 3 arranged at the end part of a new beam body 1 and a second E-shaped steel 4 arranged at the end part of an old beam body 2, wherein the back surfaces of the first E-shaped steel 3 and the second E-shaped steel 4 are oppositely arranged; e-shaped steel is common anisotropic steel, and the back surface of the E-shaped steel is the complete surface without holes or grooves;
A first cavity 5 is formed between the first E-shaped steel 3 and the second E-shaped steel 4, and a second cavity 6 is formed between the first E-shaped steel 3 and the new beam body 1 and between the second E-shaped steel 4 and the old beam body 2; the first cavity 5 and the second cavity 6 are respectively filled with the elastomer 13, the elastomer 13 is polyurethane or rubber, and in the embodiment, the elastomer 13 is polyurethane, so that the wear resistance is better, the oxidation is difficult, and the service life is longer; the connection between the new bridge and the old bridge forms flexible connection, so that the deformation of the new bridge or the old bridge structure is effectively avoided, the other side is deformed, and the driving comfort is good;
the top surface of the elastic body 13 is flush with the top surface of the asphalt pavement layer 9 of the pavement or the bridge deck, so that smoothness of a vehicle in passing is good, and driving experience is better.
As shown in fig. 1, the volume of the first cavity 5 is far greater than that of the second cavity 6, the bridge expansion joint is arranged below the first cavity 5, and the beam body is arranged below the second cavity 6, so that after the elastic body 13 is filled, the elastic body 13 in the first cavity 5 is in a suspended state, and the vertical bearing capacity is poor; therefore, the horizontal reinforcing ribs 7 are welded on the back surfaces of the two E-shaped steels, the reinforcing ribs 7 are arranged horizontally oppositely, so that after the elastic body 13 is filled, the reinforcing ribs 7 and the elastic body 13 are integrated, the vertical bearing capacity of the elastic body 13 in the first cavity 5 can be effectively improved, the risk of collapse of the expansion joint device under vertical load is not easy to occur, and driving safety is facilitated.
In order to improve the bearing capacity, transverse through holes 8 are formed in grooves on the first E-shaped steel 3 and the second E-shaped steel 4, and the through holes 8 are used for realizing the communication between the first cavity 5 and the second cavity 6, so that the elastic bodies 13 in the whole first cavity 5 and the whole second cavity 6 are integrated;
As shown in fig. 2, in order to improve the connection firmness of the whole expansion joint device, the bottoms of the two second cavities 6 are respectively provided with a fixed plate 14, and one end of the fixed plate 14 is respectively welded and connected with the first E-shaped steel 3 and the second E-shaped steel 4; the fixed plate 14 on the first E-shaped steel 3 is positioned at the bottom of the left end of the first E-shaped steel 3, and the fixed plate 14 on the second E-shaped steel 4 is positioned at the bottom of the right end of the second E-shaped steel 4;
The other end of the fixed plate 14 is connected with a positioning anchoring steel bar 10, and the anchoring steel bar 10 is welded with an embedded steel bar 11 in the beam body, so that the first E-shaped steel 3 and the new beam body 1 form a whole, the second E-shaped steel 4 and the old beam body 2 form a whole, and the connection firmness of the whole expansion joint device is better;
the transverse reinforcing bars 12 are welded to the anchor reinforcing bars 10, and the transverse reinforcing bars 12 are arranged in the width direction of the beam body. The transverse reinforcing bars 12 can be arranged in a plurality, and the transverse reinforcing bars 12 can strengthen the connection firmness between the anchoring reinforcing bars 10 and the beam body, so that the two E-shaped steel is not easy to displace.
In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and "secured" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
The content of the utility model is not limited to the examples listed, and any equivalent transformation to the technical solution of the utility model that a person skilled in the art can take on by reading the description of the utility model is covered by the claims of the utility model.
Claims (8)
1. Be applied to expansion joint device of new and old bridge, its characterized in that: the novel beam comprises a first E-shaped steel (3) arranged at the end part of a new beam body (1) and a second E-shaped steel (4) arranged at the end part of an old beam body (2), wherein the back surfaces of the first E-shaped steel (3) and the second E-shaped steel (4) are oppositely arranged;
A first cavity (5) is formed between the first E-shaped steel (3) and the second E-shaped steel (4), a second cavity (6) is formed between the first E-shaped steel (3) and the new beam body (1) and between the second E-shaped steel (4) and the old beam body (2), and an elastomer (13) is filled in the first cavity (5) and the second cavity (6) respectively.
2. The expansion joint device applied to new and old bridges according to claim 1, wherein: the elastomer (13) is polyurethane or rubber.
3. The expansion joint device applied to new and old bridges according to claim 1, wherein: the back surfaces of the first E-shaped steel (3) and the second E-shaped steel (4) are respectively welded with horizontal reinforcing ribs (7).
4. An expansion joint device applied to new and old bridges according to claim 3, wherein: transverse through holes (8) are formed in grooves in the first E-shaped steel (3) and the second E-shaped steel (4), and the through holes (8) are communicated with the first cavity (5) and the second cavity (6).
5. The expansion joint device applied to new and old bridges according to claim 4, wherein: the bottoms of the two cavity bodies II (6) are respectively provided with a fixed plate (14), and one end of each fixed plate (14) is respectively connected with the first E-shaped steel (3) and the second E-shaped steel (4) in a welding way;
The other end of the fixing plate (14) is connected with a position anchoring steel bar (10), and the anchoring steel bar (10) is connected with an embedded steel bar (11) in the beam body.
6. The expansion joint device applied to new and old bridges according to claim 5, wherein: the transverse steel bars (12) are welded on the anchoring steel bars (10), and the transverse steel bars (12) are arranged along the width direction of the beam body.
7. The expansion joint device applied to new and old bridges according to claim 5, wherein: the fixed plate (14) on the first E-shaped steel (3) is positioned at the bottom of the left end of the first E-shaped steel (3), and the fixed plate (14) on the second E-shaped steel (4) is positioned at the bottom of the right end of the second E-shaped steel (4).
8. The expansion joint device applied to new and old bridges according to claim 1, wherein: the top surface of the elastic body (13) is flush with the top surface of the pavement layer (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322385343.1U CN220867971U (en) | 2023-09-04 | 2023-09-04 | Expansion joint device applied to new and old bridges |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322385343.1U CN220867971U (en) | 2023-09-04 | 2023-09-04 | Expansion joint device applied to new and old bridges |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220867971U true CN220867971U (en) | 2024-04-30 |
Family
ID=90819743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322385343.1U Active CN220867971U (en) | 2023-09-04 | 2023-09-04 | Expansion joint device applied to new and old bridges |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220867971U (en) |
-
2023
- 2023-09-04 CN CN202322385343.1U patent/CN220867971U/en active Active
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