CN211596402U - Curved bridge deck superelevation structure - Google Patents
Curved bridge deck superelevation structure Download PDFInfo
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- CN211596402U CN211596402U CN202020033666.8U CN202020033666U CN211596402U CN 211596402 U CN211596402 U CN 211596402U CN 202020033666 U CN202020033666 U CN 202020033666U CN 211596402 U CN211596402 U CN 211596402U
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Abstract
A curved bridge deck ultrahigh structure comprises a main beam, a grid and an asphalt pavement layer which are arranged from bottom to top, wherein the grid comprises a plurality of steel plates and a plurality of steel bars which are vertically arranged, the steel plates are arranged in parallel, the bottoms of the steel plates are positioned at the same horizontal height, the steel bars are fixedly connected to the edges of the steel plates, and the steel bars are simultaneously connected with the steel plates; the top of the main beam is provided with an embedded bar extending upwards, and the embedded bar is fixedly connected with the steel bar through binding; compared with the prior art, the bridge deck system formed by the concrete pavement layer and the asphalt pavement layer is transformed into the cross slope adjustable bridge deck system formed by the double-layer super-toughness small stone concrete, the height-variable steel plate grating and the asphalt pavement layer, so that the problems that the superelevation needs to be adjusted along with the change of the driving speed and the function and the standard requirement are solved, the structure dead weight is not increased, the jacking is not required, or the structure stress system is not changed, the construction is simple and convenient, and the bridge deck system is suitable for curve bridge deck superelevation transformation engineering.
Description
Technical Field
The utility model belongs to the technical field of bridge engineering, especially, relate to a curved bridge floor superelevation structure.
Background
The curve bridge deck is arranged to be over high, mainly to prevent the centrifugal force of the vehicle from slipping and overturning and ensure the driving safety. However, with the change of the traveling speed, the ultrahigh transverse gradient sometimes needs to be adjusted along with the change of the traveling speed, and if the ultrahigh gradient of the bridge deck is adjusted by directly changing the thickness of the bridge deck pavement layer, the dead load of the bridge is increased, and the stress of the bridge is not favorable; in addition, if the mode of roof beam body jacking is taken, there is the torsional problem in space in the bridge, has certain risk, and the jacking control degree of difficulty is great moreover, and the construction degree of difficulty is big.
SUMMERY OF THE UTILITY MODEL
The utility model relates to an overcome the defect among the above-mentioned prior art, provide a curve bridge floor superelevation structure of layer constitution is mated formation by double-deck super toughness little stone concrete, height-variable steel plate grid, pitch.
In order to achieve the above purpose, the utility model adopts the technical scheme that: a curved bridge deck ultrahigh structure comprises a main beam, a grid and an asphalt pavement layer which are arranged from bottom to top, wherein the grid comprises a plurality of steel plates and a plurality of steel bars which are vertically arranged, the steel plates are arranged in parallel, the bottoms of the steel plates are positioned at the same horizontal height, the steel bars are fixedly connected to the edges of the steel plates, and the steel bars are simultaneously connected with the steel plates; the top of the main beam is provided with an embedded bar extending upwards, and the embedded bar is fixedly connected with the steel bar through binding; the grid is internally provided with foaming glue.
As an optimal scheme of the utility model, the steel sheet sets up along the width direction of bridge floor, and the reinforcing bar sets up along the length direction of bridge floor.
As an optimized proposal of the utility model, the main beam is provided with a cushion block, and the bottom of the steel plate is placed on the cushion block.
As an optimal scheme of the utility model, be equipped with the little stone concrete of lower part between girder and the steel sheet bottom, be equipped with the little stone concrete of upper portion between steel sheet top and the pitch layer of mating formation.
As the utility model discloses a preferred scheme, the steel sheet is quadrilateral structure, steel sheet bottom and girder top parallel arrangement, and the slope of steel sheet top sets up.
A construction method of a curve bridge deck ultrahigh structure comprises the following steps:
step A: chiseling original asphalt pavement and concrete pavement on the main beam, and cleaning the surface to enable the surface to be clean;
and B: according to the requirements of cross slope adjustment, prefabricating a grid in a factory, hoisting the prefabricated grid to a bridge floor, and placing the bottom of the grid on a cushion block at the top of a main beam;
and C: planting bars at the top of the main beam at certain intervals, and binding and fixing the planted bars and the grids;
step D: pouring a layer of lower small stone concrete on the bottom layer, vibrating tightly, and reliably connecting the grating with the main beam;
step E: after the small stone concrete at the lower part of the bottom layer is initially set, filling foaming glue in the grid, wherein the height of the foaming glue is properly lower than the top surface of the grid;
step F: pouring a layer of upper small stone concrete by using the foaming adhesive as a bottom die, wherein the cross slope of the surface of the upper small stone concrete reaches the design cross slope requirement after pouring is finished;
step G: and constructing an asphalt pavement layer to finish the transformation of the bridge deck system cross slope.
As an optimal scheme of the utility model, cushion adjustment grid is apart from girder roof 1-2cm clearance.
As an optimal scheme of the utility model, the grid includes steel sheet and reinforcing bar, and steel sheet bottom is a reinforcing bar of every 15cm welding.
As the utility model discloses a preferred scheme, the distance that the girder was implanted to the bar planting is 5cm, and bar planting extension is connected fixedly with reinforcement simultaneously.
As an optimal scheme of the utility model, the small pebble concrete thickness of lower part is 5cm, and the small pebble concrete thickness of upper portion is 3-6cm, and the pitch layer of pavement thickness is 4 cm.
The beneficial effects of the utility model are that, compare with prior art: the bridge deck system formed by the concrete pavement layer and the asphalt pavement layer is transformed into the cross slope adjustable bridge deck system formed by the double-layer super-toughness small stone concrete, the height-variable steel plate grating and the asphalt pavement layer, so that the problems that the function and the standard requirement of superelevation also need to be adjusted along with the change of the driving speed are solved, the self weight of the structure is not increased, the structure stress system is not jacked or changed, the construction is simple and convenient, and the bridge deck system is suitable for the super-elevation transformation engineering of the bridge deck of the curved bridge.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a partial enlarged view at a of fig. 1;
FIG. 3 is a front view of the grid;
FIG. 4 is a top view of the grid
Reference numbers in the figures: the main beam comprises a main beam 1, a grid 2, a cushion block 3, a planted bar 4, lower small stone concrete 5, a foaming adhesive 6, an asphalt pavement layer 7, a reinforcing steel bar 8, a steel plate 9 and upper small stone concrete 10.
Detailed Description
The following describes embodiments of the present invention in detail with reference to the accompanying drawings.
As shown in fig. 1-4, a curved bridge deck ultrahigh structure comprises a main beam 1, a grid 2 and an asphalt pavement layer 7, wherein the main beam 1, the grid 2 and the asphalt pavement layer 7 are arranged from bottom to top, the grid 2 comprises a plurality of steel plates 9 and a plurality of steel bars 8 which are vertically arranged, the steel plates 9 are arranged in parallel, the bottoms of the steel plates 9 are positioned at the same horizontal height, the steel bars 8 are fixedly connected to the edges of the steel plates 9, and the steel bars 8 are simultaneously connected with the steel plates 9; the top of the main beam 1 is provided with an embedded bar 4 extending upwards, and the embedded bar 4 is fixedly connected with the steel bar 8 through binding; the grid 2 is internally provided with foaming glue 6.
The width direction setting of bridge floor is followed to steel sheet 9, and the length direction setting of bridge floor is followed to reinforcing bar 8, and steel sheet 9 is quadrilateral structure, and steel sheet 9 bottom and 1 top parallel arrangement of girder, the slope of steel sheet 9 top set up, and the inclination at steel sheet 9 top designs according to the required inclination of bridge floor, and the inclination at steel sheet 9 top is unanimous with the required inclination of bridge floor, and two sides of steel sheet 9 are vertical structure.
The main beam 1 is provided with a cushion block 3, the bottom of the steel plate 9 is placed on the cushion block 3, the cushion block 3 is placed at the top of the main beam 1, a gap is formed between the bottom of the steel plate 9 and the main beam 1 under the action of the cushion block 3, the lower small stone concrete 5 is arranged between the main beam 1 and the bottom of the steel plate 9, and the upper small stone concrete 10 is arranged between the top of the steel plate 9 and the asphalt pavement layer 7.
In the actual use process, the method comprises the following steps:
step A: chiseling original asphalt pavement and concrete pavement on the main beam 1, cleaning the surface to enable the surface to be clean, excavating according to the size of the grating 2 by chiseling size, and excavating until the top surface of the main beam 1 is seen.
And B: according to the requirements of cross slope adjustment, a grid 2 is prefabricated in a factory, the prefabricated grid 2 is hoisted to a bridge floor, and the bottom of the grid 2 is placed on a cushion block 3 at the top of a main beam 1.
And C: the embedded bars 4 are embedded at the top of the main beam 1 at certain intervals, the embedded bars 4 extend into the main beam 1, the embedded bars 4 are fixedly connected with the grids 2 in a binding manner, and the grids 2 and the main beam 1 can be effectively kept to be a whole and stressed jointly.
Step D: pouring a layer of lower small stone concrete 5 on the bottom layer, vibrating tightly, and reliably connecting the grating 2 with the main beam 1;
step E: after the small stone concrete 5 at the lower part of the bottom layer is initially set, filling the foaming glue 6 in the grid 2, wherein the height of the foaming glue 6 is properly lower than the top surface of the grid 2, and the mixed slurry of the foaming glue 6 can automatically level and self-compact when being formed; the construction workability is good, the pumping and leveling are facilitated, the construction material has good compatibility with other building materials, the strength can be adjusted according to requirements, and meanwhile, the light weight of the construction material can effectively reduce the whole load of bridge deck pavement and the construction cost of an engineering foundation.
The foaming glue 6 is used as a light material, is filled in the grating 2 and is used as a bottom mould of the upper small stone concrete 10, the pouring thickness of the upper small stone concrete 10 is adjusted, and the weight of the whole bridge deck system is controlled.
Step F: the foaming glue 6 is used as a bottom die, a layer of upper small stone concrete 10 is poured, the surface cross slope of the upper small stone concrete 10 reaches the design cross slope requirement after pouring is completed, the lower small stone concrete 5 and the upper small stone concrete 10 are arranged in two layers, and the grating 2 and the main beam 1 and the grating 2 and the asphalt pavement layer 7 can be effectively connected by utilizing the higher toughness and strength of the small stone concrete.
Step G: and constructing an asphalt pavement layer 7 to finish the transformation of the bridge deck system cross slope.
The cushion block 3 adjusts the gap between the grid 2 and the top plate 1-2cm of the main beam 1, so that the bottom of the grid 2 is not directly contacted with the main beam 1, and the vibration received by the grid 2 is transmitted to the main beam 1 through the buffer of the small stone concrete 5 at the lower part, so that the bridge deck has better safety.
The grating 2 comprises a steel plate 9 and reinforcing steel bars 8, and the reinforcing steel bars 8 are welded at intervals of 15cm at the edge of the steel plate 9.
The distance of the embedded bar 4 embedded into the main beam 1 is 5cm, and meanwhile, the extending part of the embedded bar 4 is fixedly bound and connected with the steel bar 8.
The thickness of the lower small stone concrete 5 is 5cm, the thickness of the upper small stone concrete 10 is 3-6cm, the thickness of the asphalt pavement layer 7 is 4cm, the upper small stone concrete 10 and the lower small stone concrete 5 have higher toughness and strength than common concrete, the overall strength of the bridge deck can be effectively guaranteed, meanwhile, the required superelevation of a curve bridge crane can be adjusted according to the thickness of the laid upper small stone concrete 10, and finally, the guardrails on two sides of the bridge are heightened, so that the expansion joint of the bridge is reformed.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention; thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Although the reference numerals in the figures are used more here: the main beam 1, the grid 2, the cushion block 3, the embedded steel bars 4, the lower small stone concrete 5, the foam rubber 6, the asphalt pavement layer 7, the steel bars 8, the steel plate 9, the upper small stone concrete 10 and other terms are used, but the possibility of using other terms is not excluded; these terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.
Claims (5)
1. The ultrahigh structure of the bridge floor of the curved bridge is characterized by comprising a main beam (1), a grid (2) and an asphalt pavement layer (7), wherein the main beam (1), the grid (2) and the asphalt pavement layer (7) are arranged from bottom to top, the grid (2) comprises a plurality of steel plates (9) and a plurality of steel bars (8) which are vertically arranged, the plurality of steel plates (9) are arranged in parallel, the bottoms of the plurality of steel plates (9) are positioned at the same horizontal height, the steel bars (8) are fixedly connected to the edges of the steel plates (9), and the steel bars (8) are simultaneously connected with the plurality of steel; the top of the main beam (1) is provided with an embedded bar (4) extending upwards, and the embedded bar (4) is fixedly connected with the reinforcing steel bar (8) through binding; and the grid (2) is internally provided with foaming glue (6).
2. Curved bridge deck superstructure according to claim 1, characterized in that said steel plates (9) are arranged along the length direction of the deck and the steel reinforcements (8) are arranged along the width direction of the deck.
3. The curved bridge deck ultrahigh structure of claim 2, wherein a cushion block (3) is arranged on the main beam (1), and the bottom of the steel plate (9) is placed on the cushion block (3).
4. The curved bridge deck ultrahigh structure according to claim 3, wherein lower small stone concrete (5) is arranged between the main beam (1) and the bottom of the steel plate (9), and upper small stone concrete (10) is arranged between the top of the steel plate (9) and the asphalt pavement layer (7).
5. The curved bridge deck ultrahigh structure of claim 4, wherein the steel plates (9) are of quadrilateral structures, the bottoms of the steel plates (9) are arranged in parallel with the tops of the main beams (1), and the tops of the steel plates (9) are arranged obliquely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020033666.8U CN211596402U (en) | 2020-01-08 | 2020-01-08 | Curved bridge deck superelevation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020033666.8U CN211596402U (en) | 2020-01-08 | 2020-01-08 | Curved bridge deck superelevation structure |
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| CN211596402U true CN211596402U (en) | 2020-09-29 |
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| CN202020033666.8U Active CN211596402U (en) | 2020-01-08 | 2020-01-08 | Curved bridge deck superelevation structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111119050A (en) * | 2020-01-08 | 2020-05-08 | 浙江交工集团股份有限公司 | Curved bridge deck ultrahigh structure and construction method thereof |
| CN112985862A (en) * | 2021-02-25 | 2021-06-18 | 广东稳固检测鉴定有限公司 | Bridge detection structure and detection method thereof |
-
2020
- 2020-01-08 CN CN202020033666.8U patent/CN211596402U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111119050A (en) * | 2020-01-08 | 2020-05-08 | 浙江交工集团股份有限公司 | Curved bridge deck ultrahigh structure and construction method thereof |
| CN112985862A (en) * | 2021-02-25 | 2021-06-18 | 广东稳固检测鉴定有限公司 | Bridge detection structure and detection method thereof |
| CN112985862B (en) * | 2021-02-25 | 2023-05-23 | 广东稳固检测鉴定有限公司 | Bridge detection structure and detection method thereof |
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