CN114922060B - Bridge expansion joint device and use method thereof - Google Patents
Bridge expansion joint device and use method thereof Download PDFInfo
- Publication number
- CN114922060B CN114922060B CN202210597142.5A CN202210597142A CN114922060B CN 114922060 B CN114922060 B CN 114922060B CN 202210597142 A CN202210597142 A CN 202210597142A CN 114922060 B CN114922060 B CN 114922060B
- Authority
- CN
- China
- Prior art keywords
- drainage
- groove
- expansion joint
- bridge expansion
- joint device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000000034 method Methods 0.000 title abstract description 6
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 30
- 239000010959 steel Substances 0.000 claims abstract description 30
- 239000002245 particle Substances 0.000 claims abstract description 25
- 238000007789 sealing Methods 0.000 claims abstract description 21
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 239000007787 solid Substances 0.000 claims abstract description 19
- 230000000903 blocking effect Effects 0.000 claims abstract description 14
- 239000004576 sand Substances 0.000 claims description 13
- 238000004140 cleaning Methods 0.000 claims description 11
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims 1
- 238000005260 corrosion Methods 0.000 abstract description 2
- 230000007797 corrosion Effects 0.000 abstract description 2
- 239000000428 dust Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/06—Arrangement, construction or bridging of expansion joints
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/08—Damp-proof or other insulating layers; Drainage arrangements or devices ; Bridge deck surfacings
- E01D19/086—Drainage arrangements or devices
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a bridge expansion joint device and a use method thereof, wherein the bridge expansion joint device comprises a steel longitudinal beam and a sealing strip, the sealing strip is of an elastic strip-shaped structure and comprises a main body part and a clamping plug part, wherein a drainage groove is formed in the main body part in a hollow mode; a drainage part is arranged above the drainage groove and used for blocking solid particles and allowing liquid to flow downwards into the drainage groove; the blocking parts are integrally arranged at two sides of the main body part; at least one side of the steel longitudinal beam is provided with a clamping groove matched with the clamping plug part, and the clamping plug part is inserted into the clamping groove. On one hand, the invention can prevent large-particle solids from falling into the drainage groove to cause blockage, ensure good drainage performance and avoid corrosion in the bridge expansion joint device caused by rainwater leakage; on the other hand, the large-particle solids remained on the drainage part are convenient to clean.
Description
Technical Field
The invention belongs to the technical field of road and bridge engineering, and particularly relates to a bridge expansion joint device and a using method thereof.
Background
In order to meet the requirements of bridge connection and to adjust the displacement between bridge superstructures caused by vehicle load, temperature change and other factors, bridge expansion joint devices are usually arranged between two beam ends of a bridge, between a beam end and a bridge abutment and at the hinge positions of the bridge. Bridge expansion joint devices typically include section steel for bridge end connections and sealing strips provided between the section steel. Most bridge expansion joint devices are directly exposed on the bridge deck, and have certain requirements on drainage performance. However, it is found that dust and particles are mixed in rainwater, and leakage occurs at the sealing strip due to unsmooth drainage. Whereby: on one hand, the internal structure of the bridge expansion joint device is corroded, and the service life of the bridge expansion joint device is influenced; on the other hand, the anchoring steel bars at the joint of the bridge expansion joint device and the bridge end part are corroded, so that the bridge structure is damaged.
Disclosure of Invention
The invention aims to provide a bridge expansion joint device with good drainage performance and easy cleaning, and also provides a using method of the bridge expansion joint device.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
The utility model provides a bridge expansion joint device, includes steel longeron and sealing strip, the sealing strip is the rectangular shape structure of elasticity, includes:
A main body part, the inside of which is hollow to form a drain groove; a drainage part is arranged above the drainage groove and used for blocking solid particles and allowing liquid to flow downwards into the drainage groove;
The blocking parts are integrally arranged on two sides of the main body part;
The clamping groove matched with the clamping plug part is formed in at least one side of the steel longitudinal beam, and the clamping plug part is inserted into the clamping groove.
Further, the top of the main body part is provided with two mirror symmetry first face parts which expand from bottom to top to form a concave structure; the bottom edges of the two first face parts extend to the vertical center surface of the drainage groove and are contacted with each other to form the drainage part.
In the technical scheme, rainwater and sand are accumulated on the drainage part, and under the action of gravity, the bottom of the drainage part is gradually opened, so that part of rainwater and smaller sand particles can fall into the drainage groove to be discharged; because the end of the drainage part has certain elasticity, the opening angle is not too large, thereby avoiding blockage caused by large-particle sand falling into the drainage groove.
As an alternative scheme, the top of the main body part is provided with two first mirror-symmetrical face parts which expand from bottom to top to form a concave structure; the drainage part comprises two mirror symmetry second faces, the bottom edges of the two second faces are integrally connected, and the top edges of the two second faces are mutually far away to form a flaring; the lower side of the second face is attached to the upper side of the first face, and a plurality of sawtooth grooves are formed in the lower side of the second face and used for guiding liquid into the drainage grooves.
In the technical scheme, on one hand, the drainage part still plays roles of rainwater drainage and sand blocking, and the working pressure of the drainage groove is reduced; on the other hand, the drainage part is convenient to clean regularly.
Among the above-mentioned technical scheme, the concave structure is to liquid and solid particle to the centre guide, reduces the degree of difficulty of collecting to follow-up rainwater drainage and grit clearance of being convenient for.
Further, the drainage part can be detached, and can be directly placed on the main body part, and can be taken down during cleaning, so that the cleaning difficulty is reduced.
Further, a notch is formed in the outer side surface of the blocking portion.
Further, the notch part is of a zigzag structure.
According to the technical scheme, the upper side and the lower side of the clamping plug part are forced, so that the clamping plug part is folded at the notch, and the sealing strip is convenient to install and detach.
Further, the inside of the blocking part is hollow, and a compression hole which is matched with the shape of the notch part is arranged.
The invention also provides a using method of the bridge expansion joint device, which comprises the following steps:
when liquid flows into the sealing strip of the bridge expansion joint device, the liquid gathers on the drainage part, part of the liquid flows out from the two ends of the drainage part, and the rest of the liquid flows into the drainage groove from the drainage part and finally flows out from the two ends of the drainage groove;
When solid particles fall into the bridge expansion joint device, the drainage part plays a role in blocking, so that the solid particles are prevented from falling into the drainage groove to block the circulation of the drainage groove;
when cleaning is needed, the solid particles on the drainage part are directly cleaned.
The beneficial effects are that: (1) The drainage performance is good, large-particle solids can be prevented from falling into the drainage tank to cause blockage, and the circulation of the drainage tank is ensured; the rapid drainage can be realized, rainwater is prevented from overflowing and penetrating into the bridge expansion joint device, the risk of corrosion in the bridge expansion joint device is reduced, and the service life is prolonged; (2) The large-particle solid remains on the drainage part, so that the cleaning is convenient.
Drawings
FIG. 1 is a schematic view of the bridge expansion joint device in embodiment 1;
FIG. 2 is a schematic view of the structure of the weather strip in example 1;
FIG. 3 is a schematic view of the structure of the steel stringers of example 1;
FIG. 4 is an enlarged view of a portion of FIG. 2 at A;
FIG. 5 is an enlarged view of a portion of FIG. 2, modified at A;
FIG. 6 is a schematic structural view of a bridge expansion joint device in embodiment 2;
FIG. 7 is a schematic view of the structure of the weather strip in example 2;
Fig. 8 is a schematic structural view of a drainage part in embodiment 2.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
Example 1
As shown in fig. 1, the bridge expansion joint device 1 comprises a sealing strip 10 and a steel longitudinal beam 20.
Specifically, referring to fig. 2, the weather strip 10 has an elastic elongated structure including a main body portion 11 and a stopper portion 12. The inside of the weather strip 10 is hollow and opened upward, forming a drainage channel 111 along its length. At the same time, the top of the body 11 is recessed toward the vertical center plane of the drain groove 111 and forms a drain portion 13 along the length direction of the body 11, and the drain portion 13 blocks solid particles of a larger size, thereby allowing liquid to flow into the drain groove 111.
The top of the main body 11 is provided with two mirror-symmetrical first faces 112, and the two first faces 112 expand from bottom to top to form a concave structure. The bottom edges of the two first faces 112 extend toward the vertical center plane of the drain groove 111 and contact to form the drain portion 13, and the bottom of the drain portion 13 opens under a certain pressure. Therefore, when rainwater and sand are gathered on the drainage portion 13, if the amount of rain is small, the pressure applied to the drainage portion 13 is small, most of the rainwater is directly discharged to both ends of the weather strip 10 through the drainage portion 13, and a small portion of the rainwater infiltrates into the drainage groove 111. If the rainwater is sufficient, the bottom of the drainage portion 13 is gradually opened under the action of gravity, and part of the rainwater and smaller sand particles can fall into the drainage groove 111 to be discharged. In this case, the drain groove 111 is less likely to be clogged, and the drain efficiency can be improved. Since the end of the drainage portion 13 has a certain elasticity, the opening angle is not too large, so that the blockage caused by the falling of large-particle sand into the drainage groove 111 is avoided. The concave structure formed by the two first faces 112 guides liquid and solid particles to the middle, so that the collection difficulty is reduced, and subsequent rainwater drainage and sand and stone cleaning are facilitated. Since the large-particle sand is deposited in the drainage portion 13 of the upper layer, not in the drainage groove 111, it can be directly cleaned, which is very convenient.
Referring to fig. 3, the steel longitudinal beam 20 is disposed along a direction perpendicular to the length direction of the bridge, and at least one side of the steel longitudinal beam 20 is provided with a clamping groove 21 adapted to the clamping plug portion 12 along the length direction. The steel stringers 20 are mainly two kinds, one is a side steel stringer connected with an anchor bar at the bridge end; the other is a middle steel longitudinal beam arranged between the side steel longitudinal beams. In the case of a side steel stringer, a clamping groove 21 is provided on one side of the steel stringer 20. In the case of the middle steel longitudinal beam, clamping grooves 21 are formed in both sides of the steel longitudinal beam 20.
In the following description, the bridge expansion joint device 1 with only two side steel stringers is described, and two opposite sides of the two steel stringers 20 are respectively provided with a clamping groove 21. These two steel stringers 20 are connected with two different bridge ends of the bridge respectively, and the connection modes of the steel stringers 20 and the bridge ends are various, which are the prior art and are not described here in detail. One weather strip 10 includes two stopper portions 12, and the two stopper portions 12 are integrally provided on both sides of the main body portion 11, respectively. When the stopper portion 12 is provided in the catching groove 21 of the steel side member 20, an upward force is provided to the main body portion 11.
Although the stopper portion 12 has a certain elastic force, it is not easy to insert it into the locking groove 21. Referring to fig. 4, in this embodiment, the two blocking portions 12 of one sealing strip 10 are symmetrically provided with notches 121 on the sides far away from each other, and the notch 121 may have a zigzag structure. When the clamping plug part 12 is required to be plugged into the clamping groove 21, the clamping plug part 12 is folded at the notch by exerting force on the upper side and the lower side of the clamping plug part 12, so that the sealing strip 10 is convenient to install and detach. However, it should be noted that the tooth grooves of the zigzag structure should not be too deep, otherwise the blocking portion 12 is easily removed from the blocking groove 21.
In connection with fig. 5, it is of course also possible to provide a hollow compression hole 122 in the inside of the clamping groove 21, and the cross-sectional shape of the compression hole 122 and the cross-sectional shape of the notch 121 are adapted, i.e. the opening angle and the opening direction of the two are kept the same or similar. The stopper portion 12 can be folded easily at this time. This has the advantage of facilitating the removal and installation of the sealing strip 10. The stuck portion 12 of the weather strip 10 provided according to the present embodiment can be easily implemented once the weather strip 10 is damaged or needs to be replaced periodically. In order to avoid the problem that the sealing strip 10 is easily detached therefrom, a support plate may be provided on the steel side member 20 to support the sealing strip 10 from the bottom. And the support plates may be staggered in order to avoid interference of the support plates on the two steel stringers 20.
When liquid flows into the sealing strip 10 of the bridge expansion joint device 1, the liquid gathers on the drainage part 13, part of the liquid flows out from the two ends of the drainage part 13, and the rest of the liquid flows into the drainage groove 111 from the drainage part 13 and finally flows out from the two ends of the drainage groove 111; when solid particles fall into the bridge expansion joint device 1, the drainage part 13 plays a role in blocking, so that the solid particles are prevented from falling into the drainage groove 111 to block the circulation of the drainage groove 111; when cleaning is needed, the solid particles on the drainage part 13 can be directly cleaned.
Example 2
As shown in fig. 6, the bridge expansion joint device 1 comprises a sealing strip 10 and a steel longitudinal beam 20.
The steel stringers 20 in this embodiment may adopt the technical solution of embodiment 1, which is not described herein.
Referring to fig. 7, the sealing tape 10 in this embodiment is also an elastic strip structure. The weather strip 10 includes a main body portion 11 and a stopper portion 12. The blocking portion 12 may adopt the embodiment 1. The inside of the weather strip 10 is hollow and opened upward, forming a drainage channel 111 along its length. At the same time, the top of the main body 11 is recessed toward the vertical center surface of the drain groove 111, forming a drain portion 13 along the longitudinal direction of the main body 11. The larger sized solid particles are blocked by the drain 13 while allowing liquid to flow into the drain channel 111.
In this embodiment, the top of the main body 11 is provided with two first mirror-symmetrical faces 112, and the two first faces 112 expand from bottom to top to form a concave structure, so as to guide rainwater and solid sand to the middle. Specifically, in connection with fig. 8, in the present embodiment, the drainage portion 13 includes two mirror-symmetrical second face portions 131. The bottom edges of the two second faces 131 are integrally connected, and the top edges of the two second faces 131 are far away from each other to form flares. The drainage portion 13 is detachably placed on top of the main body portion 11. The lower side of the second surface 131 is attached to the upper side of the first surface 112, and a plurality of saw tooth grooves 132 are formed in the lower side of the second surface 131.
When rainwater comes, the drainage portion 13 first takes on the function of rainwater drainage to drain rainwater from both ends of the sealing strip 10. And the accumulated dust and sand particles in the drainage part 13 can be cleaned conveniently. If the rainwater is excessively large or the sand is excessively large, so that the drainage portion 13 cannot drain in time, the rainwater gradually overflowed from the serration grooves 132 flows into the drainage groove 111 and is finally discharged from both ends of the drainage groove 111. Because the drainage part 13 can be directly placed on the main body part 11, the drainage part 13 can be directly taken out for cleaning, and the cleaning difficulty is greatly reduced. At the same time, the drain portion 13 can take on a part of the drainage function, and the operating pressure of the drain tank 111 is reduced.
Claims (4)
1. The utility model provides a bridge expansion joint device, includes steel longeron and sealing strip, its characterized in that, the sealing strip is the rectangular shape structure of elasticity, includes:
a main body part, the inside of which is hollow to form a drain groove; a drainage part for collecting liquid and solid particles and discharging the liquid from two ends is arranged above the drainage groove; the drainage part is also arranged to block solid particles and guide part of the liquid into the drainage groove when the liquid amount in the drainage part is large; the drainage part and the drainage groove form a double-layer drainage structure;
The blocking parts are integrally arranged on two sides of the main body part; at least one side of the steel longitudinal beam is provided with a clamping groove matched with the clamping plug part, and the clamping plug part is inserted into the clamping groove;
the top of the main body part is provided with two mirror-symmetrical first face parts which expand from bottom to top to form a concave structure; the drainage part comprises two mirror symmetry second faces, the bottom edges of the two second faces are integrally connected, and the top edges of the two second faces are mutually far away to form a flaring; the lower side surface of the second face part is attached to the upper side surface of the first face part, and a plurality of sawtooth grooves are formed in the lower side surface of the second face part and used for guiding liquid into the drainage grooves; the drainage part is detachable;
When rainwater comes, the drainage part firstly plays a role of rainwater drainage and discharges the rainwater from the two ends of the sealing strip; if the rainwater is too large or sand is too much, the drainage part cannot drain in time, the gradually overflowed rainwater can flow into the drainage groove from the sawtooth groove and finally is discharged from the two ends of the drainage groove; when cleaning is needed, the drainage part is directly taken out for cleaning.
2. The bridge expansion joint device according to claim 1, wherein the outside surface of said stopper portion is provided with a notch portion.
3. The bridge expansion joint device according to claim 2, wherein said notched portion is of a zigzag configuration.
4. A bridge expansion joint according to claim 3, wherein the stopper portion is hollow and provided with a compression hole corresponding to the shape of the notch portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210597142.5A CN114922060B (en) | 2022-05-30 | 2022-05-30 | Bridge expansion joint device and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210597142.5A CN114922060B (en) | 2022-05-30 | 2022-05-30 | Bridge expansion joint device and use method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114922060A CN114922060A (en) | 2022-08-19 |
| CN114922060B true CN114922060B (en) | 2024-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210597142.5A Active CN114922060B (en) | 2022-05-30 | 2022-05-30 | Bridge expansion joint device and use method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114922060B (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200312792Y1 (en) * | 2003-02-10 | 2003-05-13 | 곽민구 | Expansion and contraction joint device of bridge that strengthen drainage function |
| CN206328674U (en) * | 2016-12-19 | 2017-07-14 | 宁波大学 | A kind of noise reduction protection device for bridge expanssion joint |
| CN109235257A (en) * | 2018-11-20 | 2019-01-18 | 上海兰德公路工程咨询设计有限公司 | For the precompressed of bridge expanssion joint, waterproof, noise reduction, damping novel water-stop band |
| KR101956742B1 (en) * | 2018-07-20 | 2019-03-11 | 박만석 | Waterproof Expansion Joint for Bridges |
| CN209276988U (en) * | 2018-12-27 | 2019-08-20 | 施启悝 | A kind of anticlogging road and bridge drainpipe |
| KR102012793B1 (en) * | 2018-09-20 | 2019-08-21 | 에코머스(주) | Expansion jointing apparatus |
| CN110616630A (en) * | 2019-10-23 | 2019-12-27 | 郭海霞 | Bridge expansion joint anti-blocking drainage system |
| CN110629666A (en) * | 2019-10-30 | 2019-12-31 | 中国建筑第七工程局有限公司 | Bridge expansion joint |
| CN211171596U (en) * | 2019-11-06 | 2020-08-04 | 孟翔 | Bridge expansion joint with double-layer waterstop structure |
| CN211228087U (en) * | 2019-11-06 | 2020-08-11 | 孟翔 | Double-deck waterstop bridge expansion joint |
| CN211340398U (en) * | 2019-11-28 | 2020-08-25 | 张存磊 | Dustproof expansion joint of bridge |
| CN215104640U (en) * | 2021-08-03 | 2021-12-10 | 河北宝力工程装备股份有限公司 | Bridge expansion device |
| CN216074721U (en) * | 2021-10-18 | 2022-03-18 | 恒德建设集团有限公司 | Bridge expansion joint rainwater drainage device |
-
2022
- 2022-05-30 CN CN202210597142.5A patent/CN114922060B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200312792Y1 (en) * | 2003-02-10 | 2003-05-13 | 곽민구 | Expansion and contraction joint device of bridge that strengthen drainage function |
| CN206328674U (en) * | 2016-12-19 | 2017-07-14 | 宁波大学 | A kind of noise reduction protection device for bridge expanssion joint |
| KR101956742B1 (en) * | 2018-07-20 | 2019-03-11 | 박만석 | Waterproof Expansion Joint for Bridges |
| KR102012793B1 (en) * | 2018-09-20 | 2019-08-21 | 에코머스(주) | Expansion jointing apparatus |
| CN109235257A (en) * | 2018-11-20 | 2019-01-18 | 上海兰德公路工程咨询设计有限公司 | For the precompressed of bridge expanssion joint, waterproof, noise reduction, damping novel water-stop band |
| CN209276988U (en) * | 2018-12-27 | 2019-08-20 | 施启悝 | A kind of anticlogging road and bridge drainpipe |
| CN110616630A (en) * | 2019-10-23 | 2019-12-27 | 郭海霞 | Bridge expansion joint anti-blocking drainage system |
| CN110629666A (en) * | 2019-10-30 | 2019-12-31 | 中国建筑第七工程局有限公司 | Bridge expansion joint |
| CN211171596U (en) * | 2019-11-06 | 2020-08-04 | 孟翔 | Bridge expansion joint with double-layer waterstop structure |
| CN211228087U (en) * | 2019-11-06 | 2020-08-11 | 孟翔 | Double-deck waterstop bridge expansion joint |
| CN211340398U (en) * | 2019-11-28 | 2020-08-25 | 张存磊 | Dustproof expansion joint of bridge |
| CN215104640U (en) * | 2021-08-03 | 2021-12-10 | 河北宝力工程装备股份有限公司 | Bridge expansion device |
| CN216074721U (en) * | 2021-10-18 | 2022-03-18 | 恒德建设集团有限公司 | Bridge expansion joint rainwater drainage device |
Also Published As
| Publication number | Publication date |
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| CN114922060A (en) | 2022-08-19 |
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