CN220099642U - Perforated steel grid-high-strength concrete cast-in-situ combined bridge deck - Google Patents
Perforated steel grid-high-strength concrete cast-in-situ combined bridge deck Download PDFInfo
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- CN220099642U CN220099642U CN202320652433.XU CN202320652433U CN220099642U CN 220099642 U CN220099642 U CN 220099642U CN 202320652433 U CN202320652433 U CN 202320652433U CN 220099642 U CN220099642 U CN 220099642U
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 206
- 239000010959 steel Substances 0.000 title claims abstract description 206
- 239000011372 high-strength concrete Substances 0.000 title claims abstract description 66
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 51
- 239000011148 porous material Substances 0.000 claims abstract description 12
- 238000010276 construction Methods 0.000 claims abstract description 10
- 239000002131 composite material Substances 0.000 claims description 10
- 239000000725 suspension Substances 0.000 claims description 2
- 229910000746 Structural steel Inorganic materials 0.000 abstract description 8
- 238000005336 cracking Methods 0.000 abstract description 7
- 239000004567 concrete Substances 0.000 abstract description 5
- 238000005452 bending Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229910021487 silica fume Inorganic materials 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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- Bridges Or Land Bridges (AREA)
Abstract
The utility model relates to an open-pore steel grating-high-strength concrete cast-in-situ combined bridge deck, which comprises a plurality of main steel bars which are arranged in parallel with each other, wherein the structural steel bars are vertically and cross-connected with main steel bars to form a steel grating; a corrugated plate is arranged on the flange surface of the lower flange of the main section steel in a space formed between the main section steel and the structural section steel, and is used as a bottom die in high-strength concrete cast-in-situ construction; a web plate of the main section steel is provided with a plurality of holes, the stress steel bars penetrate through the holes, and the stress steel bars are positioned in trough grooves matched with the corrugated plates; the top surface of the steel grating is provided with a structural steel mesh, high-strength concrete is cast-in-situ on the corrugated plate to form an open-pore steel grating-high-strength concrete cast-in-situ combined bridge deck, and a bridge deck pavement layer is paved on the surface of the open-pore steel grating-high-strength concrete cast-in-situ combined bridge deck; the utility model can reduce the dead weight of the bridge deck and the problems of fatigue cracking, pavement layer damage, concrete tension cracking and the like while meeting the requirements of strength and rigidity.
Description
Technical Field
The utility model relates to an open-pore steel grating-high-strength concrete cast-in-situ combined bridge deck, and belongs to the technical field of bridge structures.
Background
The bridge deck plate is also called a traffic lane plate, is a bearing structure for directly bearing the wheel pressure of a vehicle, is generally integrally connected with the beam rib and the diaphragm plate of the main beam in structure, can transmit the vehicle load to the main beam, can form the component part of the section of the main beam, and ensures the integral action of the main beam, and the working state of the bridge deck plate can directly influence the service performance and the driving comfort of a bridge, so that the bridge deck plate is taken as an important component part of the bridge structure, the bridge deck plate structure is reasonably designed, and the bridge deck plate structure is significant in meaning in bridge engineering.
The traditional bridge deck is generally manufactured by reinforced concrete, the known Zhou Hunning soil has the problems of low strength, easy pulling crack, large dead weight and the like, so that the orthotropic steel bridge deck is often used for replacing the concrete bridge deck, and is a structure which is formed by stiffening ribs (longitudinal ribs and transverse ribs) which are mutually perpendicular in longitudinal and transverse directions and a bridge deck top plate and bears the wheel load together.
Therefore, there is a need to develop a new deck slab structure that can solve the above problems.
Disclosure of Invention
The utility model provides an open-pore steel grating-high-strength concrete cast-in-situ combined bridge deck, which can meet the requirements of strength and rigidity, and simultaneously reduce the dead weight of the bridge deck and the problems of fatigue cracking, pavement layer damage, concrete tension cracking and the like.
The technical scheme adopted for solving the technical problems is as follows:
a perforated steel grating-high-strength concrete cast-in-situ combined bridge deck comprises a plurality of main steel sections and a plurality of structural steel sections, wherein the main steel sections are arranged in parallel, and the structural steel sections and the main steel sections are vertically and cross-connected to form a steel grating;
forming a plurality of spaces between the main section steel and the structural section steel, and arranging a corrugated plate on the flange surface of the lower flange of the main section steel in the spaces, wherein the corrugated plate is used as a bottom die in high-strength concrete cast-in-situ construction;
a plurality of holes which are uniformly distributed are formed in the web plate of the main section steel, a plurality of holes which are penetrated by the stress steel bars are erected on the corrugated plate to form a section steel skeleton unit, and the stress steel bars are positioned in trough grooves matched with the corrugated plate;
arranging a structural steel bar net on the top surface of the steel grating, casting high-strength concrete on the corrugated plate in a cast-in-situ manner to form an open-pore steel grating-high-strength concrete cast-in-situ combined bridge deck slab, and paving a bridge deck pavement layer on the surface of the open-pore steel grating-high-strength concrete cast-in-situ combined bridge deck slab;
as a further preference of the utility model, in each perforated steel grid-high-strength concrete cast-in-situ combined bridge deck, the ends of adjacent main steel sections are connected through constructional angle steel or steel plates to form closed ends;
as a further preference of the utility model, when the bridge is a multi-girder or box girder bridge type, the formed perforated steel grid-high-strength concrete cast-in-situ combined bridge deck adopts a transverse type, namely the main section steel is arranged perpendicular to the travelling direction of the bridge deck;
as a further preferred aspect of the present utility model, the beam perpendicular to the bridge deck traveling direction is a cross beam, the beam parallel to the bridge deck traveling direction is a longitudinal beam, the main beam section steel is supported by the longitudinal beam, and the main beam section steel is connected with the longitudinal beam;
as a further preference of the utility model, when the bridge is a tied arch bridge, a box girder bridge or a suspension bridge, the formed perforated steel grating-high-strength concrete cast-in-situ combined bridge deck adopts a longitudinal arrangement mode, namely main-line steel is arranged parallel to the bridge deck travelling direction;
as a further preferred aspect of the present utility model, the beam perpendicular to the bridge deck traveling direction is a cross beam, the beam parallel to the bridge deck traveling direction is a side beam, the main-beam section steel is supported by the cross beam, and the main-beam section steel is connected to the cross beam.
Through the technical scheme, compared with the prior art, the utility model has the following beneficial effects:
1. in the perforated steel grid-high-strength concrete cast-in-situ combined bridge deck, the sectional steel is adopted as a skeleton unit, and because the sectional steel is cut by hot rolled sectional steel, the fatigue resistance is excellent, and the fatigue cracking problem can be greatly reduced;
2. in the perforated steel grating-high-strength concrete cast-in-situ combined bridge deck, the steel skeleton units are prefabricated in advance in a factory, so that the manufacturing period can be greatly saved;
3. in the perforated steel grid-high-strength concrete cast-in-situ combined bridge deck, the web plate of the main steel is provided with the holes, the stressed steel bars are penetrated in the holes, and after the high-strength concrete is poured, the main steel and the concrete have superior connection performance, and meanwhile, the tensile performance of the steel and the compressive performance of the high-strength concrete are fully utilized, so that the structural integrity and the stress strength are improved;
4. in the perforated steel grating-high-strength concrete cast-in-situ combined bridge deck, the high-strength concrete is cast-in-situ, so that the corrugated plate is used as a bottom die, the thickness of the bridge deck is reduced, and the dosage of the high-strength concrete is reduced at the same time, so that the dead weight of the bridge deck is reduced.
Drawings
The utility model will be further described with reference to the drawings and examples.
FIG. 1 is a schematic view of the overall structure of an open-celled steel grating-high-strength concrete cast-in-situ composite deck bridge deck provided by the utility model;
FIG. 2 is a schematic view (horizontal) of a section steel skeleton unit structure in an open-pore section steel grid-high-strength concrete cast-in-situ composite bridge deck provided by the utility model;
FIG. 3 is a schematic plan view (transverse) of a profile steel skeleton unit provided by the utility model;
FIG. 4 is a schematic cross-sectional view of a section steel skeleton unit (FIG. 3) A-A provided by the utility model;
FIG. 5 is a schematic view of section B-B of a section steel skeleton unit (FIG. 3) provided by the utility model;
FIG. 6 is a schematic view of section C-C of a section steel skeleton unit (FIG. 3) provided by the utility model;
fig. 7 is a schematic view of a section D-D of a section steel skeleton unit (fig. 3) provided by the utility model.
In the figure: 1 is the main section steel, 2 is the structural section steel, 3 is the atress reinforcing bar, 4 is the corrugated plate, 5 is the structural reinforcement net, 6 is high-strength concrete, 7 is bridge deck pavement layer, 8 is the structural angle steel or steel sheet.
Detailed Description
The utility model will now be described in further detail with reference to the accompanying drawings. In the description of the present utility model, it should be understood that the terms "left", "right", "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and "first", "second", etc. do not indicate the importance of the components, and thus are not to be construed as limiting the present utility model. The specific dimensions adopted in the present embodiment are only for illustrating the technical solution, and do not limit the protection scope of the present utility model.
As explained in the background art, the bridge deck structure which is more common in large and medium-sized bridges is an orthotropic steel bridge deck structure, and mainly has the problems of low bridge deck rigidity, easiness in fatigue cracking, easiness in damaging paving layers, higher later maintenance and repair cost and the like.
The main structure of the perforated steel grating-high-strength concrete cast-in-situ combined bridge deck comprises a plurality of main steel sections 1 and a plurality of structural steel sections 2, wherein the main steel sections are arranged in parallel, and the structural steel sections and the main steel sections are vertically and cross-connected to form a steel grating; the main section steel is used as a stress structure to resist bending moment parallel to a plurality of main section steel; a space is formed between adjacent main section steel and structural section steel, a corrugated plate 4 is arranged on the flange surface of the lower flange of the main section steel in the space, and the corrugated plate is arranged because the skeleton unit of the section steel (namely, the steel grating and the stressed steel bar 3) is prefabricated in a factory and then transported to the site for assembly, and cast-in-situ high-strength concrete 6 is needed after assembly, so that the high-strength concrete needs to be in a bearing structure before consolidation.
The utility model satisfies the dead weight reduction and also needs to ensure the bearing strength of the integral structure, wherein a web plate of the main section steel is provided with a plurality of holes which are uniformly distributed, a plurality of stressed steel bars penetrate through the holes on the web plate to erect a section steel skeleton unit formed on the corrugated plate, and the stressed steel bars are positioned in trough grooves matched with the corrugated plate; the main section steel and the structural section steel are hot rolled section steel, and the hot rolled section steel has excellent fatigue resistance and can greatly reduce the problem of fatigue cracking. The holes are formed in the main steel web plate, the stressed steel bars are penetrated in the holes, and the main steel bars and the stressed steel bars can be vertically arranged in the figure, so that the bidirectional bending performance of the bridge deck can be improved, and the stressed steel bars are positioned in the trough grooves of the corrugated plates so as to resist bending moment vertical to the main steel bar direction, and the stress performance of the bridge deck is further improved. In order to strengthen the bearing capacity, a structural reinforcing steel mesh 5 is arranged on the top surface of the steel grating, then high-strength concrete is cast-in-situ on the corrugated plate to form an open-pore steel grating-high-strength concrete cast-in-situ combined bridge deck, and the preferred embodiment of the high-strength concrete is given here, namely cement, sand, stone, a high-efficiency water reducing agent, fly ash, superfine slag, silica fume, steel fibers or other fibers and the like. Because the high-strength concrete has the high-strength characteristics of high compressive strength, high tensile strength, good durability and the like, the thickness of the bridge deck plate can be reduced, the problems of low strength and easy crack caused by pulling of the traditional concrete bridge deck plate are reduced, the connection performance of the steel grating, the stress steel bars and the high-strength concrete is superior after the steel grating, the stress steel bars and the high-strength concrete are combined, the tensile performance of the steel and the compressive performance of the high-strength concrete are fully utilized, various materials are fully utilized, and the stress performance of the bridge deck plate is improved. The bridge deck pavement layer 7 is paved on the surface of the perforated steel grating-high-strength concrete cast-in-situ combined bridge deck slab, the bonding performance of the high-strength concrete and the bridge deck pavement layer is superior to that of the steel bridge deck slab and the bridge deck pavement layer, and the problem of easy damage in pavement can be reduced.
Because the section steel skeleton units are manufactured in advance and then conveyed to a construction site for assembly, the transportation and hoisting are involved in the transportation process, and in order to ensure the integrity of each section steel skeleton unit, in the section steel grid-high-strength concrete cast-in-situ combined bridge deck with holes, the end parts of adjacent main section steel are connected through structural angle steel or steel plates 8 to form closed ends, and at the moment, the structural angle steel or steel plates are used for welding all the main section steel and the steel grids formed by the structural section steel to form a frame, so that the transportation and the hoisting are convenient.
The perforated steel grid-high-strength concrete cast-in-situ composite bridge deck provided by the utility model can be suitable for various bridge structures, but when the perforated steel grid-high-strength concrete cast-in-situ composite bridge deck is suitable for different bridge structures, the main-line steel has a description of the layout orientation of the main-line steel relative to the bridge deck running direction, and the attached figure 2 provided by the utility model is that when the bridge is a multi-girder or box girder bridge, the perforated steel grid-high-strength concrete cast-in-situ composite bridge deck is transversely arranged, namely the main-line steel is arranged perpendicular to the bridge deck running direction. For convenience of display, as shown in fig. 3-7, a beam perpendicular to the running direction of the bridge deck is defined as a cross beam, a beam parallel to the running direction of the bridge deck is a longitudinal beam, main section steel is supported by the longitudinal beam, and the main section steel is connected with the longitudinal beam.
When the bridge is a tie arch bridge or a girder bridge like a box girder, the formed perforated steel grating-high-strength concrete cast-in-situ combined bridge deck adopts a longitudinal arrangement mode, namely main steel is arranged parallel to the bridge deck travelling direction. The beam perpendicular to the bridge floor driving direction is a cross beam, the beam parallel to the bridge floor driving direction is a longitudinal beam, the main section steel is supported by the cross beam, and the main section steel is connected with the cross beam.
Finally, the utility model also provides a construction method of the perforated steel grating-high-strength concrete cast-in-situ combined bridge deck, which mainly comprises two processes of prefabrication and on-site combination and splicing.
The method specifically comprises the following steps:
step S1: perforating webs of main section steel and structural section steel in a factory, and performing rust-proof treatment on the perforated main section steel and structural section steel;
step S2: arranging a plurality of main section steels in parallel at equal intervals, vertically and crosswise connecting a plurality of structural section steels with the main section steels, and welding structural angle steels or steel plates at the ends of adjacent main section steels to form a section steel frame;
step S3: in the space formed between adjacent main section steel and structural section steel, a corrugated plate is arranged on the flange surface of the lower flange of the main section steel, the stress steel bar is penetrated into a hole formed in the web plate of the main section steel, and the stress steel bar is erected at the valley position of the corrugated plate to form a section steel skeleton unit;
step S4: repeating the step S1 to the step S3 to manufacture a section steel skeleton unit for the full bridge;
step S5: assembling and splicing a plurality of formed profile steel skeleton units, connecting main profile steel, structural profile steel and stress steel bars in two adjacent profile steel skeleton units respectively, covering corrugated plates at the splicing positions of the adjacent profile steel skeleton units, and binding steel bars in a hogging moment area until the splicing of the profile steel skeleton units of the full bridge is completed;
step S6: binding a structural reinforcing steel net at the top of a steel skeleton unit of the spliced full bridge, wherein the connection relation of main steel bars, structural steel bars, stressed steel bars, corrugated plates and structural angle steel or steel plates is formed from all angles as shown in figures 3-7;
step S7: casting high-strength concrete into the section steel skeleton units on site to form an open-pore section steel grating-high-strength concrete cast-in-situ combined bridge deck, and curing after casting is completed; splicing prefabricated section steel skeleton units, and ensuring the flatness of the formed bridge deck through post-cast-in-situ high-strength concrete;
step S8: paving a bridge deck pavement layer on the surface of the perforated steel grating-high-strength concrete cast-in-situ combined bridge deck plate to finish construction
In summary, the perforated steel grating-high-strength concrete cast-in-situ combined bridge deck provided by the utility model is presented in a construction mode of manufacturing a profile steel skeleton unit, combining and splicing on site, pouring full-bridge high-strength concrete and paving a bridge deck pavement layer, and has the advantages of convenience in construction, full play of the performances of profile steel and high-strength concrete materials, high formed structural strength and high road driving comfort level.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The meaning of "and/or" in the present utility model means that each exists alone or both exist.
"connected" as used herein means either a direct connection between components or an indirect connection between components via other components.
With the above-described preferred embodiments according to the present utility model as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.
Claims (6)
1. The utility model provides a cast-in-place combination decking of shaped steel grid-high strength concrete of trompil which characterized in that: the steel grating comprises a plurality of main section steel (1) and a plurality of construction element steel (2), wherein the main section steel (1) is arranged in parallel, and the construction element steel (2) is vertically and cross-connected with the main section steel (1) to form a steel grating;
forming a plurality of spaces between the main section steel (1) and the structural section steel (2), wherein a corrugated plate (4) is arranged on the flange surface of the lower flange of the main section steel (1) in the spaces, and the corrugated plate (4) is used as a bottom die in cast-in-situ construction of high-strength concrete (6);
a web plate of the main section steel (1) is provided with a plurality of holes which are uniformly distributed, a plurality of stressed steel bars (3) penetrate through the holes on the web plate and are erected on the corrugated plate (4) to form a section steel skeleton unit, and the stressed steel bars (3) are positioned in trough grooves matched with the corrugated plate (4);
a constructional steel bar mesh (5) is arranged on the top surface of a steel grating, high-strength concrete (6) is cast-in-situ on a corrugated plate (4) to form an open-pore steel grating-high-strength concrete cast-in-situ combined bridge deck slab, and a bridge deck pavement layer (7) is paved on the surface of the open-pore steel grating-high-strength concrete cast-in-situ combined bridge deck slab.
2. The open-celled steel grating-high-strength concrete cast-in-situ composite deck as recited in claim 1, wherein: in each perforated steel grid-high-strength concrete cast-in-situ combined bridge deck, the ends of adjacent main steel (1) are connected through structural angle steel or steel plates to form a closed end.
3. The open-celled steel grating-high-strength concrete cast-in-situ composite deck as recited in claim 1, wherein: when the bridge is a multi-girder or box girder bridge type, the formed perforated steel grid-high-strength concrete cast-in-situ combined bridge deck adopts a transverse mode, namely the main steel (1) is arranged perpendicular to the travelling direction of the bridge deck.
4. The open-celled steel grating-high-strength concrete cast-in-situ composite deck as recited in claim 3, wherein: the beam perpendicular to the bridge deck driving direction is a cross beam, the beam parallel to the bridge deck driving direction is a longitudinal beam, the main section steel (1) is supported by the longitudinal beam, and the main section steel (1) is connected with the longitudinal beam.
5. The open-celled steel grating-high-strength concrete cast-in-situ composite deck as recited in claim 1, wherein: when the bridge is a tied arch bridge, a box girder bridge or a suspension bridge, the formed perforated steel grating-high-strength concrete (6) cast-in-situ combined bridge deck adopts longitudinal arrangement, namely the main steel (1) is arranged parallel to the bridge deck travelling direction.
6. The open-celled steel grating-high-strength concrete cast-in-situ composite deck as recited in claim 5, wherein: the beam perpendicular to the bridge deck driving direction is a cross beam, the beam parallel to the bridge deck driving direction is a longitudinal beam, the main section steel (1) is supported by the cross beam, and the main section steel (1) is connected with the cross beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320652433.XU CN220099642U (en) | 2023-03-29 | 2023-03-29 | Perforated steel grid-high-strength concrete cast-in-situ combined bridge deck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320652433.XU CN220099642U (en) | 2023-03-29 | 2023-03-29 | Perforated steel grid-high-strength concrete cast-in-situ combined bridge deck |
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| CN220099642U true CN220099642U (en) | 2023-11-28 |
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| CN202320652433.XU Active CN220099642U (en) | 2023-03-29 | 2023-03-29 | Perforated steel grid-high-strength concrete cast-in-situ combined bridge deck |
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| Country | Link |
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| CN (1) | CN220099642U (en) |
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