CN214656470U - Limiting structure for resisting overturning moment of single-column pier bridge - Google Patents
Limiting structure for resisting overturning moment of single-column pier bridge Download PDFInfo
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- CN214656470U CN214656470U CN202120182426.9U CN202120182426U CN214656470U CN 214656470 U CN214656470 U CN 214656470U CN 202120182426 U CN202120182426 U CN 202120182426U CN 214656470 U CN214656470 U CN 214656470U
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Abstract
The utility model relates to a limit structure that is used for single-column mound bridge to resist moment of overturning. The pier steel plate is in a semicircular shape matched with the side surface of the single-column pier, the two ends of the pier steel plate are welded with lug plates, the two transverse connecting steel plates are arranged oppositely, and one end of each transverse connecting steel plate is welded on the pier steel plate; the two longitudinal connecting steel plates are arranged oppositely, and the top ends of the longitudinal connecting steel plates are welded with the beam bottom steel plate; the inner sides of the two transverse connecting steel plates are respectively clung to and overlapped with the outer sides of the two longitudinal connecting steel plates and are connected through connecting bolts; and the beam bottom steel plate and the pier steel plate are respectively anchored at the bottom of the box beam and the side surface of the single-column pier. The limiting structures are symmetrically arranged on two sides of the pier, and the lug plates are connected through bolts. The utility model provides an anti-pulling limit structure under great unbalance loading effect, can effectively improve original support single-point support situation, reinforcing structure torsional deformation performance and horizontal antidumping performance do not influence the original atress mode of structure and the normal traffic on the bridge, and the structure is simple, and it is convenient to be under construction.
Description
Technical Field
The utility model belongs to the bridge consolidates the field, concretely relates to single-column mound bridge is used for resisting the limit structure of overturning moment.
Background
The single-column pier box girder bridge has the advantages of attractive appearance, transparent vision, smooth lines and small occupied area of a lower structure, and is widely used as an urban overpass and a ramp bridge. Particularly, in the single-column pier box girder bridge, the rigidity of the pier is low, the pier is cracked under the action of eccentric load due to eccentric pressure, and the whole box girder even topples laterally when the bridge is seriously loaded by the eccentric load. The development process of the overturn has no early warning, the overturn explodes suddenly, the vehicle is damaged, the people are killed, and the social influence is great.
In order to prevent the box girder from laterally overturning, the pier which does not meet the requirements needs to be reinforced, and four common reinforcing schemes are that a pulling-resistant constraint structure is arranged, a single support of the middle pier is changed into a multi-support, the transverse rigidity of the middle pier is enhanced, and the distance between the supports is enlarged. The simplest reinforcing method is to arrange an anti-pulling structure, and the anti-pulling pin structure is simple in structure and small in engineering scale, and hardly influences the original stress mode of the structure and normal traffic on the bridge.
Disclosure of Invention
The utility model discloses to the problem that exists in the single-column pier box girder bridge use, provide a structure simple structure, the construction is convenient, under great unbalance loading effect, can effectively improve the situation that original support single-point supported, the limit structure who is used for single-column pier bridge resistance overturning moment of reinforcing structure torsional deformation performance and horizontal antidumping performance.
The technical scheme for realizing the purpose of the utility model is to provide a limiting structure for resisting the overturning moment of the single-column pier bridge, which comprises a beam bottom steel plate for connecting the bottom of a box beam, a pier steel plate for connecting the side surface of the single-column pier, a longitudinal connecting steel plate and a transverse connecting steel plate; the shape of the pier steel plate is a semicircle matched with the side surface of the single-column pier, ear plates are welded at two ends of the pier steel plate, a plurality of anchor bolt holes are uniformly distributed on the pier steel plate, two transverse connecting steel plates are oppositely arranged, and one end of each transverse connecting steel plate is welded on the pier steel plate; the two longitudinal connecting steel plates are arranged oppositely, and the top ends of the longitudinal connecting steel plates are welded with the beam bottom steel plate; the inner sides of the two transverse connecting steel plates are respectively clung to and overlapped with the outer sides of the two longitudinal connecting steel plates and are connected through connecting bolts; and a plurality of anchor bolt holes are uniformly distributed on the beam bottom steel plate and the pier steel plate respectively.
A limit structure for single-column mound bridge resists overturning moment, its beam bottom steel sheet anchor is in the case beam bottom of the roof beam, pier steel sheet anchor is in single-column mound side.
The utility model provides a pair of a limit structure for single column mound bridge resists overturning moment sets up at pier bilateral symmetry, and the otic placode on the adjacent pier steel sheet passes through bolted connection.
The utility model discloses set up the steel sheet of semicircular band otic placode in pier department, the anchor is on the pier, at girder beam bottom anchor steel sheet, welds the longitudinal tie steel sheet on it, welds the transverse tie steel sheet on the pier steel sheet, indulges bolted connection for the transverse tie steel sheet. The anti-pulling structure is symmetrically arranged on two sides of the pier, and the two limiting structures are connected by bolts at the lug plates to form the limiting structure of the single-column pier bridge for resisting overturning moment.
Compared with the prior art, the utility model provides a pair of single-column mound bridge is used for resisting the limit structure of overturning moment, under great unbalance loading effect, can effectively improve the condition that original support single-point supported, and reinforcing structure torsional deformation performance and horizontal anti-overturning performance do not influence the original atress mode of structure and normal traffic on the bridge, have simple structure, and the convenient characteristics of construction are applicable to batch production.
Drawings
Fig. 1 and 2 are respectively schematic diagrams of the transverse and longitudinal plane structures of the limiting structure installed behind the pier for resisting the overturning moment of the single-column pier bridge.
In the figure, 1, a beam bottom steel plate; 2. an epoxy glue layer; 3. planting a steel bar anchoring hole; 4. a pier steel plate; 5. drilling a steel plate; 6. an ear plate; 7. reserving holes for lug plate bolts; 8. the lug plate is connected with a bolt; 9. longitudinally connecting steel plates; 10. transversely connecting steel plates; 11. reserving a hole in the bolt; 12. a connecting bolt; 13. single column piers; 14. and the bottom of the box girder.
Detailed Description
The technical solution of the present invention will be further explained with reference to the accompanying drawings and examples.
Example 1
The embodiment provides a limit structure that single column mound bridge is used for resisting overturning moment.
Referring to fig. 1 and 2, schematic structural diagrams of a transverse bridge direction and a longitudinal bridge direction of the single-column pier bridge for resisting the overturning moment are respectively shown after the limiting structure is installed on a pier. The steel plate structure comprises a beam bottom steel plate 1 for connecting the beam bottom of a box beam, a pier steel plate 4 for connecting the side surface of a single-column pier, a longitudinal connecting steel plate 9 and a transverse connecting steel plate 10; the shape of the pier steel plate is a semicircle matched with the side surface of the single-column pier, the lug plates 6 are welded at two ends of the pier steel plate, a plurality of anchor bolt holes are uniformly distributed on the pier steel plate, two transverse connecting steel plates are oppositely arranged, and one end of each transverse connecting steel plate is welded on the pier steel plate; the two longitudinal connecting steel plates are arranged oppositely, and the top ends of the longitudinal connecting steel plates are welded with the beam bottom steel plate; the inner sides of the two transverse connecting steel plates are respectively clung to and overlapped with the outer sides of the two longitudinal connecting steel plates and are connected through connecting bolts 12; and a plurality of anchor bolt holes are uniformly distributed on the beam bottom steel plate and the pier steel plate respectively.
The concrete structure and the installation method are as follows:
the beam bottom steel plate 1 is made of Q235B carbon structural steel and has the thickness of 2 cm. The steel bar planting anchor holes 3 are formed in the bottom 14 of the box girder, the longitudinal direction and the transverse direction of the steel bar planting anchor holes all adopt 20cm intervals, the drilling depth is 15cm, holes are drilled in the bottom steel plate 1, and the steel bar planting anchor holes correspond to the positions of the steel bar planting anchor holes 3.
The upper part of the single-column pier 13 is provided with a pier steel plate 4 which is made of Q235B steel and has the thickness of 2cm, the shape of the pier steel plate is a semicircle matched with the pier, the left side and the right side of the steel plate are respectively welded with an ear plate 6, and the ear plate bolt preformed holes 7 are arranged on the ear plates. The steel bar planting anchor holes are formed in the bridge pier, the distance between every two adjacent steel bar planting anchor holes is 20cm in the transverse direction, the distance between every two adjacent steel bar planting anchor holes is 15cm in the longitudinal direction, the drilling depth is 15cm, and the positions of the steel plate drilling holes 5 of the bridge pier correspond to the positions of the steel bar planting anchor holes in the bridge pier. And injecting epoxy glue into the bar-planting anchoring holes and between the steel plate and the concrete layer to form an epoxy glue layer 2.
The transverse connecting steel plate 10 is welded with the pier steel plate 4, and the longitudinal connecting steel plate 9 is welded with the beam bottom steel plate 1. Bolt preformed holes 11 are arranged at corresponding positions on the longitudinal and transverse connecting steel plates, the holes are unidirectional movable holes and are connected by connecting bolts 12, and the connecting bolts 12 are M30 bolts and are 20cm in length.
Limiting structures are symmetrically arranged on two sides of the pier, lug plate connecting bolts 8 are arranged at the lug plate bolt preformed holes 7, M10 bolts are adopted, and the length is 15 cm. A limiting structure of the single-column pier bridge for resisting overturning moment is formed.
In single-column pier box girder bridge strengthening process, usable the utility model provides a limit structure sets up in pier and the bottom of the girder, increases withdrawal resistance, strengthens horizontal antidumping performance, and does not influence the original atress mode of structure and the normal traffic on the bridge during installation, and the structure is simple, and the construction is convenient, but batch production.
Claims (4)
1. The utility model provides a limit structure that is used for single column mound bridge to resist moment of overturning which characterized in that: the steel plate structure comprises a beam bottom steel plate (1) used for connecting the bottom of a box beam, a pier steel plate (4) used for connecting the side surface of a single-column pier, a longitudinal connecting steel plate (9) and a transverse connecting steel plate (10); the shape of the pier steel plate is a semicircle matched with the side surface of the single-column pier, lug plates (6) are welded at two ends of the pier steel plate, a plurality of anchor bolt holes are uniformly distributed on the pier steel plate, two transverse connecting steel plates are arranged oppositely, and one end of each transverse connecting steel plate is welded on the pier steel plate; the two longitudinal connecting steel plates are arranged oppositely, and the top ends of the longitudinal connecting steel plates are welded with the beam bottom steel plate; the inner sides of the two transverse connecting steel plates are respectively clung to and overlapped with the outer sides of the two longitudinal connecting steel plates and are connected through connecting bolts (12); and a plurality of anchor bolt holes are uniformly distributed on the beam bottom steel plate and the pier steel plate respectively.
2. The limiting structure for resisting overturning moment of the single-column pier bridge according to claim 1, wherein: the beam bottom steel plate is anchored at the bottom of the box beam.
3. The limiting structure for resisting overturning moment of the single-column pier bridge according to claim 1, wherein: the pier steel plate is anchored on the side surface of the single-column pier.
4. The limiting structure for resisting overturning moment of the single-column pier bridge according to claim 1, wherein: the limiting structures are symmetrically arranged on two sides of the bridge pier, and the lug plates on the adjacent bridge pier steel plates are connected through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120182426.9U CN214656470U (en) | 2021-01-22 | 2021-01-22 | Limiting structure for resisting overturning moment of single-column pier bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120182426.9U CN214656470U (en) | 2021-01-22 | 2021-01-22 | Limiting structure for resisting overturning moment of single-column pier bridge |
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| CN214656470U true CN214656470U (en) | 2021-11-09 |
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| CN202120182426.9U Active CN214656470U (en) | 2021-01-22 | 2021-01-22 | Limiting structure for resisting overturning moment of single-column pier bridge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113931089A (en) * | 2021-11-17 | 2022-01-14 | 中交第一公路勘察设计研究院有限公司 | Limiting device for bridge anti-overturning and anti-pulling reinforcement and construction method thereof |
-
2021
- 2021-01-22 CN CN202120182426.9U patent/CN214656470U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113931089A (en) * | 2021-11-17 | 2022-01-14 | 中交第一公路勘察设计研究院有限公司 | Limiting device for bridge anti-overturning and anti-pulling reinforcement and construction method thereof |
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