CN212294306U - Anti-overturning structure additionally arranged for existing single-column pier bridge - Google Patents
Anti-overturning structure additionally arranged for existing single-column pier bridge Download PDFInfo
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- CN212294306U CN212294306U CN202020224951.8U CN202020224951U CN212294306U CN 212294306 U CN212294306 U CN 212294306U CN 202020224951 U CN202020224951 U CN 202020224951U CN 212294306 U CN212294306 U CN 212294306U
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- bridge
- column pier
- overturning
- elastic sleeve
- rubber fender
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Abstract
The utility model discloses an anti-overturning structure added for the existing single-column pier bridge, which comprises a main beam, a single-column pier for supporting the main beam, small cover beams arranged at two sides of the single-column pier and stop block bodies arranged at the outer ends of the two sides of the upper part of the small cover beams, wherein steel springs connected with the stop block bodies are arranged between the stop block bodies and the side walls of the main beam; an anti-overturning support and an NV rubber fender are arranged between the small capping beam and the main beam, and two ends of the anti-overturning support are respectively connected with the top of the small capping beam and the bottom of the main beam; and the bottom of the NV rubber fender is connected with the top of the small capping beam in an anchoring manner. The utility model discloses a reduce the horizontal bridge of bridge to the moment of overturning, the effect of NV rubber fender energy-absorbing buffering utilizes steel spring's elasticity additionally to provide the antidumping power of a bridge simultaneously to reach the ability of reinforcing bridge antidumping, improved the atress situation of bridge, eliminate the potential safety hazard of current bridge.
Description
Technical Field
The utility model belongs to the technical field of the construction, concretely relates to is an antidumping structure that adds for existing single-column mound bridge.
Background
A large number of roads and urban bridges are continuously built all over the country after the reform is opened, wherein large bridges are few
And (6) interchange and intercommunication. With the rapid development of social and economic construction, the carrying capacity and the driving speed of vehicles are rapidly improved, which provides a serious challenge for the bearing capacity and the anti-overturning capacity of the existing bridge, and particularly, the interchange of the overpass designed at the early stage is more severe.
The early designed overpass basically adopts cast-in-place reinforced concrete curved beams and a substructure foundation
This adopts the form of pier stud + bent cap, and the bent cap top sets up the support again. Due to the restrictions of the social and economic conditions at that time, the bridge intercommunicating in the early design is usually smaller in turning radius and larger in box girder linear curvature, one of the main characteristics of the bridge is poorer bridge anti-overturning capability, and when a heavy vehicle runs by the outer side of the bridge, the box girder has potential safety hazards of support seat emptying and overturning, thereby seriously endangering the driving safety. News reports on bridge overturning due to insufficient anti-overturning capacity have appeared in succession in related reports. Today, the carrying capacity of vehicles is remarkably improved, the number of road heavy vehicles is increased gradually, and a serious challenge is provided for the bearing capacity and the anti-overturning capacity of the existing bridge. In order to meet the rapidly developing traffic demand, a good method is needed to reinforce the anti-overturning capability of the existing bridge, so as to meet the requirements of not affecting the normal use of the bridge, the safety of the bridge structure and the attractiveness of the bridge, but also enhancing the safety and durability of the bridge.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned problem that exists among the prior art, the utility model aims to provide an antidumping structure for existing single-column mound bridge is add, the antidumping ability subalternation problem in the current bridge use of solution, the construction of adding antidumping anti-falling beam device of specially adapted single-column mound bridge such as curve roof beam, sharp roof beam, special-shaped roof beam.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an anti-overturning structure additionally arranged for an existing single-column pier bridge comprises a main beam, a single-column pier for supporting the main beam, small cover beams arranged on two sides of the single-column pier and connected with the single-column pier through steel bar anchoring, and stop block bodies arranged at the outer ends of the two sides of the upper portion of each small cover beam, wherein steel springs connected with the stop block bodies are arranged between the stop block bodies and the side walls of the main beam; an anti-overturning support and an NV rubber fender are arranged between the small capping beam and the main beam, and two ends of the anti-overturning support are respectively connected with the top of the small capping beam and the bottom of the main beam; and the bottom of the NV rubber fender is connected with the top of the small capping beam in an anchoring manner.
The longitudinal section of the NV rubber fender is in an isosceles trapezoid structure with a narrow upper part and a wide lower part, and an impingement plate connected with the NV rubber fender through a flange plate is arranged above the NV rubber fender.
And a plurality of mounting holes for anchoring the NV rubber fender on the small capping beam are formed in two sides of the bottom surface of the NV rubber fender.
The top of impingement baffle with be equipped with the clearance between the bottom of girder, its clearance is not more than mm, the both sides bottom of impingement baffle is equipped with the second steel spring of being connected with it, the bottom of second steel spring with the top of little bent cap is connected.
Two ends of the second steel spring are provided with steel gaskets for connecting the impingement plate and the small cover beam; and a rubber sleeve is sleeved outside the second steel spring.
And a plastic panel is arranged on the upper surface of the impingement plate.
The two ends of the steel spring are connected with the stop block body and the main beam through an elastic sleeve pin coupler, and a sleeve for sleeving the steel spring is arranged on the elastic sleeve pin coupler.
The elastic sleeve pin coupler comprises a first elastic sleeve pin coupler and a second elastic sleeve pin coupler, the first elastic sleeve pin coupler is of a cylindrical structure, a sleeve with a circular section and used for sleeving the steel spring is arranged in the middle of the first elastic sleeve pin coupler, and a plurality of first bolt holes for bolts to pass through are formed in the edge of the sleeve; the shape of the second elastic sleeve pin coupler is the same as that of the first elastic sleeve pin coupler, and a second bolt hole matched with the first bolt hole and used for a bolt to pass through is formed in the edge of the second elastic sleeve pin coupler.
Compared with the prior art, the utility model, following beneficial effect has:
1) the utility model is provided with the buffer device which takes the NV rubber fender as the main body, when the bridge is about to overturn and fall, most energy is absorbed by generating compression deformation, the overturning speed of the bridge is slowed down, and the generated counter force is small, thereby reducing the local damage to the bridge;
2) the utility model has the advantages that the impingement plate with the plastic panel is arranged, so that the surface pressure and the shearing force which can be born by the NV rubber fender are greatly reduced, and the service life of the NV rubber fender is prolonged;
3) the utility model discloses the second steel spring that sets up at four ends of impingement baffle has strengthened the fixed of impingement baffle, has strengthened the buffer capacity of the buffer unit who takes NV rubber fender as the main part simultaneously;
4) the NV rubber fender adopted by the utility model is not in direct contact with the main beam, so the utility model has the advantages of no abrasion of the body and long service life;
5) the LT-type elastic sleeve pin coupling adopted by the utility model has the function of limiting the steel spring, and also increases the contact area between the steel spring and the block body and the girder, thereby reducing the counter force to the block body and the girder;
6) the utility model adopts the above technique to obtain the antidumping structure, through reducing the horizontal bridge to the moment of overturning of bridge, the effect of NV rubber fender energy-absorbing buffering utilizes steel spring's elasticity additionally to provide the antidumping power of a bridge simultaneously to reach the ability that strengthens bridge antidumping, improved the atress situation of bridge, eliminate the potential safety hazard of current bridge, be applicable to the construction of antidumping roof beam device that falls is add to single-column mound bridge such as curve roof beam, sharp roof beam, special-shaped roof beam.
Drawings
FIG. 1 is a schematic view of the main structure of the present invention;
FIG. 2 is a schematic front view of a damping device of the present invention, which is mainly composed of an NV rubber fender;
FIG. 3 is a schematic structural view of the NV rubber fender of the present invention;
FIG. 4 is a schematic view of the connection structure of the middle fender and the small cover beam of the present invention;
FIG. 5 is a schematic structural view of the flange plate of the present invention;
fig. 6 is a schematic front view of the elastic sleeve pin coupling of the present invention;
fig. 7 is a schematic structural view of a first elastic sleeve pin coupling of the present invention;
fig. 8 is a schematic structural view of the second elastic sleeve pin coupling of the present invention.
In the figure: 1 is the girder, 2 is steel spring, 3 is elastic sleeve pin shaft coupling, 31 is first elastic sleeve pin shaft coupling, 32 is second elastic sleeve pin shaft coupling, 33 sleeves, 34 first bolt holes, 35 second bolt holes, 4 are the dog block, 5 is the antidumping support, 6 is the impingement baffle, 7 is the ring flange, 8 is the steel gasket, 9 is NV rubber fender, 10 is second steel spring, 11 is the reinforcing bar, 12 is the little capping beam, 13 is the independent pier, 14 is the mounting hole.
Detailed Description
The conception, the details and the technical effects obtained by the present invention are further explained with reference to the accompanying drawings as follows:
as shown in fig. 1-8, the utility model discloses an anti-overturning structure added for an existing single-column pier bridge, which comprises a main beam 1, a single-column pier 13 for supporting the main beam 1, a small cover beam 12 connected with the single-column pier 13 through a steel bar 11 in an anchoring manner, and stop block bodies 4 arranged at the outer ends of the two sides of the upper part of the small cover beam 12, wherein steel springs 2 connected with the stop block bodies 4 and the side wall of the main beam 1 are arranged between the stop block bodies 4 and the side wall of the main beam 1; an anti-overturning support 5 and an NV rubber fender 9 are arranged between the small cover beam 12 and the main beam 1, and two ends of the anti-overturning support 5 are respectively connected with the top of the small cover beam 12 and the bottom of the main beam 1; the bottom of the NV rubber fender 9 is connected with the top of the small cover beam 12 in an anchoring mode, the overturning moment in the transverse bridge direction of the bridge is reduced, the NV rubber fender 9 has the function of energy absorption and buffering, and meanwhile, the elastic force of the steel spring 2 between the stop block body 4 and the main beam 1 is utilized to additionally provide the overturning resistance of the bridge, so that the overturning resistance of the bridge is enhanced, the stress condition of the bridge is improved, the potential safety hazard of the existing bridge is eliminated, and the anti-overturning and anti-falling device is suitable for construction of single-column pier piers such as curved beams, linear beams, special-shaped beams and the like by additionally arranging the anti-overturning and anti-; the steel spring 2 adopts a steel spring with a large stiffness coefficient, the aim of buffering is achieved through elastic deformation when the bridge is about to overturn, an anti-overturning force is additionally provided, and the number of the spring devices is increased or decreased according to the requirement of the bridge.
The longitudinal section of the NV rubber fender 9 is in an isosceles trapezoid structure with a narrow upper part and a wide lower part, so that the NV rubber fender has high energy absorption and counter force, compression deformation can reach 70%, a large amount of energy can be absorbed, and the NV rubber fender has the advantages of low cost, long service life, simplicity in installation and maintenance and the like, is in an isosceles trapezoid structure, and is more stable and better in anti-overturning capability; the upper part of the baffle is provided with a baffle 6 connected with the flange 7.
A plurality of mounting holes 14 for anchoring the NV rubber fender 9 to the small cap beam 12 are formed in two sides of the bottom surface of the NV rubber fender 9, preferably, six mounting holes 14 are formed in the bottom surface, and the NV rubber fender 9 and the small cap beam 12 are anchored through a gasket and a bolt.
A gap is formed between the top of the impingement plate 6 and the bottom of the main beam 1, the gap is not more than 40mm, second steel springs 10 connected with the impingement plate 6 are arranged at the bottoms of the two sides of the impingement plate 6, the bottom ends of the second steel springs 10 are connected with the top of the small cover beam 12, and the impingement plate 6 can increase the contact area between the main beam 1 and the NV rubber fender 9, so that the surface pressure born by the NV rubber fender 9 during overturning is reduced; the second steel spring 10 that sets up through impingement baffle 6 four end bottoms connects on little bent cap 12, has strengthened impingement baffle 6's fixed, further promotes its antidumping ability.
The two ends of the second steel spring 10 are provided with steel gaskets 8 which are used for being connected with the impingement plate 6 and the small cover beam 12, and the contact area between the second steel spring 10 and the impingement plate is increased through the steel gaskets 8, so that possible damage to the second steel spring 10 caused by counter force is reduced; the second steel spring 10 is sleeved with a rubber sleeve, which can prevent the second steel spring 10 from being corroded, prolong the service life,
The upper surface of the impingement baffle 6 is provided with a plastic panel, and the plastic panel can reduce the friction coefficient of the NV rubber fender 9, so that the shearing force borne by the NV rubber fender 9 during overturning is reduced.
The two ends of the steel spring 2 are connected with the block 4 and the girder 1 through the elastic sleeve pin coupler 3, the sleeve 33 for sleeving the steel spring 2 is arranged on the elastic sleeve pin coupler 3, the steel spring 2 is sleeved through the sleeve 33 to play a role in limiting the steel spring, the steel spring 2 is connected with the block 4 and the girder 1 through the elastic sleeve pin coupler 3, the contact area between the steel spring 2 and the block 4 and the girder 1 is increased, and therefore the counter force to the block 4 and the girder 1 is reduced; the elastic sleeve pin coupling 3 is an LT type elastic sleeve pin coupling.
The elastic sleeve pin coupler 3 comprises a first elastic sleeve pin coupler 31 and a second elastic sleeve pin coupler 32, the first elastic sleeve pin coupler 31 is of a cylindrical structure, a sleeve 33 with a circular section and used for sleeving the steel spring 2 is arranged in the middle of the first elastic sleeve pin coupler 31, and a plurality of first bolt holes 34 for bolts to pass through are formed in the edge of the sleeve 33; the shape of second elastic sleeve pin coupling 32 with first elastic sleeve pin coupling 31 is the same, its edge be equipped with first bolt hole 34 assorted is used for the second bolt hole 35 that the bolt passed, during the installation, with the both ends suit respectively in the sleeve 33 of both sides of steel spring 2, then place second elastic sleeve pin coupling 32 in the first elastic sleeve pin coupling 31 outside, with first, second bolt hole axis coincidence, after passing first bolt hole 34 and second bolt hole 35 with the bolt in proper order, respectively with dog block 4, girder 1 be connected, simple to operate, stable in structure has increased the area of contact between steel spring 2 and dog block 4, girder 1 to reduce the counter-force to dog block 4, girder 1.
Specifically, the technical principle of the structure is that when a bridge is subjected to the action of an overturning moment, the main beam 1 is in a transverse bridge overturning state, at the moment, the main beam 1 is in contact with a buffering and energy-absorbing device which is arranged on a small cover beam 12 at one end and takes the NV rubber fender 9 as a main body, the NV rubber fender 9 deforms and buffers collision, energy is absorbed continuously in the process, the compression deformation of the NV rubber fender 9 can reach 70%, and a large amount of energy can be absorbed; meanwhile, the elastic force of the steel spring 2 is utilized to additionally provide the anti-overturning force of a bridge, so that the anti-overturning capability of the bridge is enhanced, the stress condition of the bridge is improved, the potential safety hazard of the existing bridge is eliminated, and the anti-overturning and anti-falling device is suitable for construction of single-column pier bridges such as curved beams, linear beams, special-shaped beams and the like.
The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings or the direct or indirect application in the related technical field are included in the patent protection scope of the present invention.
Claims (8)
1. The utility model provides an antidumping structure for existing single-column pier bridge adds which characterized in that: the steel spring single-column girder erection device comprises a girder (1), a single-column pier (13) for supporting the girder (1), small cover beams (12) arranged at two sides of the single-column pier (13) and connected with the single-column pier in an anchoring mode through steel bars (11), and stop block bodies (4) arranged at the outer ends of two sides of the upper portion of each small cover beam (12), wherein steel springs (2) connected with the stop block bodies (4) are arranged between the stop block bodies (4) and the side wall of the girder (1);
an anti-overturning support (5) and an NV rubber fender (9) are arranged between the small cover beam (12) and the main beam (1), and two ends of the anti-overturning support (5) are respectively connected with the top of the small cover beam (12) and the bottom of the main beam (1); the bottom of the NV rubber fender (9) is connected with the top of the small cap beam (12) in an anchoring mode.
2. The anti-overturning structure added for the existing single-column pier bridge according to claim 1, which is characterized in that: the longitudinal section of the NV rubber fender (9) is in an isosceles trapezoid structure with a narrow upper part and a wide lower part, and a fender (6) connected with the NV rubber fender through a flange plate (7) is arranged above the NV rubber fender.
3. The anti-overturning structure added for the existing single-column pier bridge according to claim 2, which is characterized in that: and a plurality of mounting holes (14) for anchoring the NV rubber fender (9) on the small capping beam (12) are formed in two sides of the bottom surface of the NV rubber fender.
4. The anti-overturning structure added for the existing single-column pier bridge according to claim 2, which is characterized in that: the top of impingement baffle (6) with be equipped with the clearance between the bottom of girder (1), its clearance is not more than 40mm, the both sides bottom of impingement baffle (6) is equipped with second steel spring (10) of being connected with it, the bottom of second steel spring (10) with the top of little bent cap (12) is connected.
5. The anti-overturning structure added for the existing single-column pier bridge according to claim 4, which is characterized in that: two ends of the second steel spring (10) are provided with steel gaskets (8) which are used for being connected with the impingement plate (6) and the small cover beam (12); and a rubber sleeve is sleeved outside the second steel spring (10).
6. The anti-overturning structure added for the existing single-column pier bridge according to claim 5, which is characterized in that: and a plastic panel is arranged on the upper surface of the impingement baffle (6).
7. The anti-overturning structure added to the existing single-column pier bridge according to any one of claims 1 to 6, wherein: the two ends of the steel spring (2) are connected with the stop block body (4) and the main beam (1) through the elastic sleeve pin coupler (3), and a sleeve (33) used for sleeving the steel spring (2) is arranged on the elastic sleeve pin coupler (3).
8. The anti-overturning structure added for the existing single-column pier bridge according to claim 7, is characterized in that: the elastic sleeve pin coupler (3) comprises a first elastic sleeve pin coupler (31) and a second elastic sleeve pin coupler (32), the first elastic sleeve pin coupler (31) is of a cylindrical structure, a sleeve (33) with a circular section and used for sleeving the steel spring (2) is arranged in the middle of the first elastic sleeve pin coupler, and a plurality of first bolt holes (34) for bolts to pass through are formed in the edge of the sleeve; the shape of the second elastic sleeve pin coupler (32) is the same as that of the first elastic sleeve pin coupler (31), and a second bolt hole (35) matched with the first bolt hole (34) and used for a bolt to penetrate through is formed in the edge of the second elastic sleeve pin coupler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020224951.8U CN212294306U (en) | 2020-02-28 | 2020-02-28 | Anti-overturning structure additionally arranged for existing single-column pier bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020224951.8U CN212294306U (en) | 2020-02-28 | 2020-02-28 | Anti-overturning structure additionally arranged for existing single-column pier bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212294306U true CN212294306U (en) | 2021-01-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020224951.8U Expired - Fee Related CN212294306U (en) | 2020-02-28 | 2020-02-28 | Anti-overturning structure additionally arranged for existing single-column pier bridge |
Country Status (1)
| Country | Link |
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| CN (1) | CN212294306U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113026526A (en) * | 2021-04-01 | 2021-06-25 | 南京中铁桥机工程有限公司 | Large-span cable-stayed bridge framing type steel box girder |
-
2020
- 2020-02-28 CN CN202020224951.8U patent/CN212294306U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113026526A (en) * | 2021-04-01 | 2021-06-25 | 南京中铁桥机工程有限公司 | Large-span cable-stayed bridge framing type steel box girder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210105 |