CN213328699U - Anti-overturning reinforcing structure of single-column pier bridge - Google Patents
Anti-overturning reinforcing structure of single-column pier bridge Download PDFInfo
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- CN213328699U CN213328699U CN202021989846.XU CN202021989846U CN213328699U CN 213328699 U CN213328699 U CN 213328699U CN 202021989846 U CN202021989846 U CN 202021989846U CN 213328699 U CN213328699 U CN 213328699U
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- back wall
- place concrete
- overturning
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- 230000003014 reinforcing effect Effects 0.000 title claims description 8
- 239000004567 concrete Substances 0.000 claims abstract description 31
- 230000002787 reinforcement Effects 0.000 claims abstract description 12
- 238000011065 in-situ storage Methods 0.000 claims description 7
- 238000010276 construction Methods 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 abstract description 2
- 239000010959 steel Substances 0.000 abstract description 2
- 230000003245 working effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Abstract
The utility model belongs to the technical field of the bridge is consolidated, concretely relates to antidumping of single-column mound bridge strengthens structure. The concrete-filled steel plate back wall comprises a cast-in-place concrete support stop block which is poured among the front edge of the back wall, the top of the capping beam and the main beam, wherein the cast-in-place concrete support stop block is fixedly connected with the front edge of the back wall and the top of the capping beam, and a rubber pad is filled between the cast-in-place concrete support stop block and the main beam. Compared with the prior art, the utility model provides a reinforcement structure does not undertake the structure dead load, when the structure produced the moment of overturning, prevents the girder by this reinforcement structure and primary structure support jointly from toppling. The utility model discloses do not interrupt the traffic in the work progress, do not influence the normal working property of primary structure in the use, and the reinforcement cost is low, is applicable to the reinforcement of single-column mound bridge abutment department.
Description
Technical Field
The utility model belongs to the technical field of the bridge is consolidated, concretely relates to antidumping of single-column mound bridge strengthens structure.
Background
When the bridge adopts the single-column pier, the lower space occupied by the structure is less. Under the conditions of structural overload and special stress, the girder is easy to overturn, and engineering accidents of girder overturn also occur, so that the single-column pier bridge should be used with caution. However, in the actual structural design, the position and space of the lower pier are severely limited, so that a single-column pier without a cover beam has to be adopted, and at the moment, a measure for preventing the main beam from overturning must be considered to ensure the structural safety. In the flyover crossing bridge, because piers are often arranged at the middle separation zone of the crossing lower road, a single-column pier bridge has to be adopted, so that the main beam must be prevented from overturning, and serious safety accidents are avoided. However, the existing single-column pier anti-overturning reinforcement needs to limit traffic, occupies the space below the bridge and has higher reinforcement cost. Therefore, the research on the anti-overturning reinforcing structure of the single-column pier bridge is a very practical work.
Disclosure of Invention
In order to solve the problem, the utility model provides an antidumping reinforcement structure of single-column mound bridge guarantees this type bridge and does not appear the problem of toppling at the operation in-process, consolidates the back bridge headroom and is not influenced to reduce engineering cost.
A single-column mound bridge's antidumping reinforced structure, including pouring a dog 1 at the cast in situ concrete between 5 leading edges of back wall, bent cap 4 top and girder, a dog 1 and 5 leading edges of back wall and the concretion of 4 tops of bent cap of cast in situ concrete, it has rubber pad 2 to fill between 3 with the girder.
The cast-in-place concrete support block 1 is made of non-shrinkage concrete. Longitudinal, transverse and vertical stirrups are arranged inside the cast-in-place concrete supporting and stopping block 1.
The front edge of the back wall 5 and the top of the bent cap 4 are provided with embedded bars, the embedding depth is more than or equal to 10d (the diameter of the embedded bars), and the embedded bars are arranged in a quincunx shape.
A gap of 1cm is reserved between the cast-in-place concrete supporting and stopping block 1 and a flange and a web plate of the main beam 3, and the gap is filled with a rubber pad 2.
Compared with the prior art, the utility model discloses following technological effect has been obtained: the bearing capacity of the original structure of the bridge is fully utilized, the cast-in-place concrete support stop block does not bear the constant load of the structure in the normal working process of the bridge, and only participates in stress when the bridge generates overturning moment, and the larger the overturning moment is, the higher the participation degree is; gaps are reserved between the cast-in-place concrete support stop blocks and the original structural main beam and the web plate, so that the anti-overturning reinforcing structure does not influence the longitudinal and transverse horizontal movement of the main beam, only limits the overturning of the main beam and does not influence other stress characteristics of the main beam and the working deformation of the support; the traffic is not interrupted in the construction, the construction process is simple and mature, the operation is easy, and the construction cost can be effectively reduced; the two ends of the bridge are reinforced, and the use space at the lower part of the bridge is not occupied.
Drawings
FIG. 1 is a schematic elevation view of an anti-overturning reinforcing structure of a single-column pier bridge of the present invention; FIG. 2 is a schematic side view of an anti-overturning reinforcing structure of a single-column pier bridge; wherein, 1-cast-in-place concrete support block; 2, rubber cushion; 3, a main beam; 4-a capping beam; 5-back wall.
Detailed Description
The anti-overturning reinforcing structure of the single-column pier bridge of the present invention will be further described with reference to the following specific embodiments, but the scope of the present invention is not limited thereto.
Example 1
The utility model provides an antidumping reinforcement structure of single-column mound bridge, including pouring a dog 1 of cast in situ concrete between 5 leading edges of back wall, 4 tops of bent cap and girder, a dog 1 of cast in situ concrete concretes with 5 leading edges of back wall and 4 tops of bent cap, and packs between 3 the girder and have rubber pad 2 for keep apart a dog 1 of cast in situ concrete and girder 3, and transmit the load when girder 3 produces the moment of toppling.
Before the cast-in-place concrete support stop block 1 is poured, the front edge of the back wall 5 and the top of the bent cap 4 are roughened and cleaned, and fresh concrete is exposed; the front edge of the back wall 5 and the top of the bent cap 4 are embedded with bars, the embedding depth is 10d, the bar embedding form is arranged according to a quincunx, the longitudinal and transverse spacing of the bar embedding is controlled to be 15cm, the end part of the bar embedding adopts a 90-degree hook, and the length of the hook is equal to 20 cm.
Longitudinal, transverse and vertical stirrups are arranged inside the cast-in-place concrete supporting and stopping block 1, the distance between the stirrups is controlled to be 15cm, the net protective layer thickness of the stirrups is 4cm, the diameter of the stirrups is phi 12, the stirrups are closed, hooks of 135 degrees are made at the tail ends of the stirrups, the lengths of the hooks are 20cm, and the hooks are uniformly arranged in the range of the cast-in-place concrete supporting and stopping block 1.
The cast-in-place concrete support block 1 adopts non-shrinkage concrete, and is added with steel fibers, the mixing amount is 0.9kg/m3, and the concrete strength is not lower than that of the cover beam 4. A gap of 1cm is reserved between the cast-in-place concrete supporting and stopping block 1 and the flange and the web plate of the main beam 3, and the gap is filled with a rubber pad 2.
Claims (5)
1. The utility model provides an antidumping reinforcement structure of single-column mound bridge which characterized in that, including pouring a dog (1) of cast in situ concrete between back wall (5) front edge, bent cap (4) top and girder (3), a dog (1) of cast in situ concrete concreties with back wall (5) front edge and bent cap (4) top, and it has rubber pad (2) to fill between girder (3).
2. The anti-overturning reinforcement structure according to claim 1, characterized in that said cast-in-place concrete stop block (1) is made of non-shrinking concrete.
3. The anti-overturning reinforcement construction according to claim 1, characterized in that longitudinal, transverse and vertical stirrups are laid internally of the cast-in-place concrete stop blocks (1).
4. The anti-overturning reinforcing structure according to claim 1, wherein the front edge of the back wall (5) and the top of the capping beam (4) are provided with embedded bars, the embedded depth is more than or equal to 10 times of the diameter of the embedded bars, and the embedded bars are arranged in a quincunx manner.
5. The anti-overturning reinforcement structure according to claim 1, characterized in that a gap of 1cm remains between the cast-in-place concrete abutment blocks (1) and the flanges and webs of the main beams (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021989846.XU CN213328699U (en) | 2020-09-11 | 2020-09-11 | Anti-overturning reinforcing structure of single-column pier bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021989846.XU CN213328699U (en) | 2020-09-11 | 2020-09-11 | Anti-overturning reinforcing structure of single-column pier bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213328699U true CN213328699U (en) | 2021-06-01 |
Family
ID=76063696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021989846.XU Expired - Fee Related CN213328699U (en) | 2020-09-11 | 2020-09-11 | Anti-overturning reinforcing structure of single-column pier bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213328699U (en) |
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2020
- 2020-09-11 CN CN202021989846.XU patent/CN213328699U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20210601 |