CN114457666A - Be applied to assembled transverse connection structure of little case roof beam - Google Patents
Be applied to assembled transverse connection structure of little case roof beam Download PDFInfo
- Publication number
- CN114457666A CN114457666A CN202210089651.7A CN202210089651A CN114457666A CN 114457666 A CN114457666 A CN 114457666A CN 202210089651 A CN202210089651 A CN 202210089651A CN 114457666 A CN114457666 A CN 114457666A
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- China
- Prior art keywords
- small box
- box girder
- slab
- girder
- precast slab
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- 238000010276 construction Methods 0.000 claims abstract description 12
- 239000000945 filler Substances 0.000 claims description 10
- 239000011150 reinforced concrete Substances 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- 238000009417 prefabrication Methods 0.000 claims description 5
- 239000011513 prestressed concrete Substances 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims description 4
- 239000003822 epoxy resin Substances 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000000903 blocking effect Effects 0.000 abstract description 2
- 230000000452 restraining effect Effects 0.000 abstract 1
- 239000004567 concrete Substances 0.000 description 6
- 230000001681 protective effect Effects 0.000 description 3
- 238000002955 isolation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses an assembled transverse connecting structure applied to small box beams, which comprises two or more small box beams arranged side by side, wherein inverted convex precast slabs are arranged between every two adjacent small box beams, and the tops of the small box beams and the precast slabs form a plane; the connecting position of the small box girder and the prefabricated slab is provided with a tongue-and-groove connecting groove, and the shape of the tongue-and-groove connecting groove is matched with that of the prefabricated slab; the small box girder and the prefabricated slab are longitudinally embedded by adopting a zigzag structure; the small box girder and the precast slab top are paved with or not paved with a bridge deck cast-in-place layer. Compared with the prior art, the invention has the advantages that: the structure is clear, the construction is convenient, the construction quality of the small box girder can be improved, and the influence on the electrified railway, the highway or the structure is reduced; splicing by adopting a zigzag structure, and restraining the small box girder and the precast slab from longitudinal displacement; the small box girder prestress is divided into an internal prestress and an external prestress; the durability is better, and the bridge maintenance workload is reduced, so that the application blocking and control times of railway and road departments are reduced.
Description
Technical Field
The invention relates to the technical field of fabricated concrete engineering, in particular to a fabricated transverse connecting structure applied to a small box girder.
Background
The box girder is a box-like girder structure in bridge engineering, and the small box girder has stronger convenience for erection compared with a T girder, so that most of the existing middle-span and small-span bridges adopt a split type combined small box girder form when crossing the existing railway and highway.
When the wet seam is poured to the small box girder bridge above the electrified railway, the highway or the structure, there is the risk that the concrete slurry, aggregate and even the relevant parts such as template drop, if pound railway contact net and train or highway and car, will cause major accident, and the safety risk is big, therefore protective measures need be done in the small box girder bridge construction operation, and the protection mode among the prior art has two kinds: the first way is to set up a protective shed frame and then lay an insulating plate (electricity-proof plate) on the shed frame for preventing high-voltage breakdown for isolation, and the protection way is to solve the problem of object falling above the electrified railway by adopting a physical isolation way under the conditions that no shielding exists above the electrified railway and the road and shed frame foundations are set up on two sides. The protection mode has certain limitation, and particularly, the problem of falling objects above the electrified railway cannot be completely solved above the electrified railway; and the protective shed frame has higher requirement on space, and partial projects are difficult to meet the shed frame erection condition. The second way is to operate at a railway lock point or during traffic control, but this way has a great impact on transportation and traffic.
The operation above the railway or the highway needs to apply for locking points and traffic control to railway and road departments, the resources of the railway locking and skylight points are limited, only 2-4 locking points are needed every week, and the single-point time is generally not more than 2 hours. The conventional construction scheme of the wet joint is generally in-situ pouring, a large amount of time is consumed for performing work such as reinforcement binding, welding, film erecting, pouring, maintenance and the like, the required on-line operation time is long, the construction period is increased by several times or even dozens of times compared with that of a non-railway and road span, and the progress of the whole project is delayed; and has a greater safety risk for transportation.
Therefore, an assembled transverse connecting structure applied to the small box girder is in urgent need of research.
Disclosure of Invention
The present invention has been made to solve the problems occurring in the background art, and an object of the present invention is to provide an assembled lateral connecting structure applied to a small box girder.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: an assembled transverse connection structure applied to small box girders comprises two or more small box girders arranged side by side, inverted convex precast slabs are arranged between every two adjacent small box girders, and the tops of the small box girders and the precast slabs form a plane;
the joint of the small box girder and the precast slab is provided with a tongue-and-groove connecting groove, and the shape of the tongue-and-groove connecting groove is matched with that of the precast slab;
the small box girder and the prefabricated slab are longitudinally embedded by adopting a zigzag structure;
the small box girder and the precast slab top are one of paved bridge deck cast-in-place layers or not paved bridge deck cast-in-place layers.
As a preferred scheme, the small box girder is a precast girder, the material of the small box girder is one of a steel bar prestressed concrete girder and a high-performance steel bar prestressed concrete girder, and the precast mode is one of integral precast and segmental precast and assembly.
As a preferable scheme, the longitudinal length range of the prefabricated slab is 0.5-3m, the prefabricated slab and the prefabricated slab are connected by tongue-and-groove seams, and the width of the prefabricated slab is 0.3-1.5 m.
Preferably, the precast slab is one of a reinforced concrete slab, a high-performance reinforced concrete slab and a composite material slab.
Preferably, the connection mode between the small box girder and the precast slab is one of bolt connection and filler cementation.
Preferably, the filler is one of epoxy resin and elastic bonding material.
As a preferred scheme, the bridge deck cast-in-place layer is cast-in-place construction, and the thickness is 8-10 cm.
Compared with the prior art, the invention has the advantages that: the structure is clear, the construction is convenient, the construction quality of the small box girder can be improved, and the influence on the electrified railway, the highway or the structure is reduced; the small box girder and the precast slab are longitudinally spliced by adopting a zigzag structure, so that the longitudinal displacement of the small box girder and the precast slab is restrained; the small box girder prestress is divided into an internal prestress and an external prestress; the durability is better, and the workload of bridge maintenance is reduced, so that the application blocking and control times of railway and road departments are reduced.
Drawings
Fig. 1 is a schematic structural view of the present invention.
FIG. 2 is a schematic sectional view showing the construction of the junction between the small box girder and the precast slab according to the present invention.
Fig. 3 is a plan view of the junction of the small box girder and the precast slab of the present invention.
As shown in the figure: 1. the method comprises the following steps of small box girders 2, precast slabs 3, tongue-and-groove connecting grooves 4 and a bridge floor cast-in-place layer.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the resulting manner or element must have a specific orientation, be configured in a specific orientation, and operate, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; the connection can be mechanical connection or point connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
An assembled transverse connection structure applied to small box girders comprises two small box girders 1 arranged side by side, an inverted convex precast slab 2 is arranged between the two small box girders 1, the tops of the small box girders 1 and the precast slab 2 form a plane, and a bridge deck cast-in-place layer 4 is arranged at the tops of the small box girders 1 and the precast slab 2 or the bridge deck cast-in-place layer 4 is not arranged;
a tongue-and-groove connecting groove 3 is arranged at the joint of the small box girder 1 and the precast slab 2, and the shape of the tongue-and-groove connecting groove 3 is matched with that of the precast slab 2;
the small box girder 1 and the precast slab 2 are longitudinally embedded by adopting a zigzag structure.
The small box girder 1 is a precast girder, the material of the small box girder is one of a steel bar (prestressed) concrete girder and a high-performance steel bar (prestressed) concrete girder, and the precast mode is one of integral prefabrication and segmental prefabrication and assembly.
The longitudinal length range of the prefabricated slab 2 is 0.5-3m, the prefabricated slab and the prefabricated slab are connected through tongue-and-groove seams, and the width of the prefabricated slab 2 is 0.3-1.5 m.
The precast slab 2 is one of a reinforced concrete slab, a high-performance reinforced concrete slab and a composite material slab.
The small box girder 1 and the precast slab 2 are connected by one of bolt connection and filler cementation.
The filler is one of epoxy resin and elastic bonding material.
The bridge deck cast-in-place layer 4 is cast-in-place construction, the thickness is 8-10cm, and shear nails or shear steel bars are arranged between the bridge deck cast-in-place layer 4 and the small box girders.
When the method is implemented specifically, the implementation steps are as follows: prefabricating and erecting small box girders, hoisting prefabricated plates, connecting joints by bolts or cementing fillers, and constructing a cast-in-place bridge deck layer.
The small box girder is a reinforced (prestressed) concrete girder or a high-performance reinforced (prestressed) concrete girder, and the high-performance prestressed concrete girder can be thinner and lighter on the premise of ensuring the structure safety and is more convenient to erect.
The small box girder is divided into an integral prefabricated part and a segment prefabricated part, the length of the segment prefabricated part is 5m, 10m and the like, and the factory prefabricated construction is adopted.
The small box girder prestress is divided into an internal prestress and an external prestress.
The width of the precast slab is 0.3-1.5 m, the precast slab is a reinforced concrete slab or a composite material slab, and the reinforced concrete slab is a high-performance reinforced concrete slab or a reinforced concrete slab.
The longitudinal length of the prefabricated slab ranges from 0.5 m to 3m, the tongue-and-groove joints are cemented by filling agents, and the filling agents comprise epoxy resin or other elastic bonding materials.
The precast slabs and the small box girders can be connected by bolts or cemented by filling agents.
The small box girder and the precast slab are longitudinally embedded by adopting a zigzag structure, so that the longitudinal displacement of the small box girder and the precast slab is restrained.
The thickness of the bridge deck cast-in-place layer 4 is 8-10cm, and shear nails or shear steel bars are arranged between the bridge deck cast-in-place layer 4 and the small box girders.
The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. The utility model provides a be applied to assembled transverse connection structure of little case roof beam which characterized in that: the box girder comprises two or more small box girders arranged side by side, an inverted convex precast slab is arranged between every two adjacent small box girders, and the tops of the small box girders and the precast slab form a plane.
The joint of the small box girder and the precast slab is provided with a tongue-and-groove connecting groove, and the shape of the tongue-and-groove connecting groove is matched with that of the precast slab;
the small box girder and the precast slab are longitudinally embedded by adopting a zigzag structure.
The small box girder and the precast slab top are one of paved bridge deck cast-in-place layers or not paved bridge deck cast-in-place layers.
2. The fabricated cross-connecting structure applied to the small box girder according to claim 1, wherein: the small box girder is a prefabricated girder made of one of a steel bar prestressed concrete girder and a high-performance steel bar prestressed concrete girder, and the prefabrication mode is one of integral prefabrication and segmental prefabrication and assembly.
3. The fabricated cross-connecting structure applied to the small box girder according to claim 1, wherein: the longitudinal length range of the prefabricated slab is 0.5-3m, the prefabricated slab and the prefabricated slab are connected through tongue-and-groove seams, and the width of the prefabricated slab is 0.3-1.5 m.
4. The fabricated cross-connecting structure applied to the small box girder according to claim 1, wherein: the precast slab is one of a reinforced concrete slab, a high-performance reinforced concrete slab and a composite material plate.
5. The fabricated cross-connecting structure applied to the small box girder according to claim 1, wherein: the connection mode between the small box girder and the precast slab is one of bolt connection and filler cementation.
6. The fabricated cross-connecting structure applied to the small box girder according to claim 1, wherein: the filler is one of epoxy resin and elastic bonding material.
7. The fabricated cross-connecting structure applied to the small box girder according to claim 1, wherein: the bridge deck cast-in-place layer is cast-in-place construction, and the thickness is 8-10 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210089651.7A CN114457666A (en) | 2022-01-25 | 2022-01-25 | Be applied to assembled transverse connection structure of little case roof beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210089651.7A CN114457666A (en) | 2022-01-25 | 2022-01-25 | Be applied to assembled transverse connection structure of little case roof beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114457666A true CN114457666A (en) | 2022-05-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210089651.7A Pending CN114457666A (en) | 2022-01-25 | 2022-01-25 | Be applied to assembled transverse connection structure of little case roof beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114457666A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114892552A (en) * | 2022-07-01 | 2022-08-12 | 安徽省公路桥梁工程有限公司 | Box girder type bridge reconstruction construction method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100069840A (en) * | 2008-12-17 | 2010-06-25 | 재단법인 포항산업과학연구원 | Construction method of continuous bridge using precast panel and steel box girder |
| CN105155399A (en) * | 2015-07-31 | 2015-12-16 | 中铁第四勘察设计院集团有限公司 | Small box girder bridge and building method thereof |
| CN208440965U (en) * | 2018-06-07 | 2019-01-29 | 广州市市政工程设计研究总院有限公司 | One kind is for no reason every formula UHPC small box girder structure |
| CN113136783A (en) * | 2021-03-18 | 2021-07-20 | 长江武汉航道工程局 | Prefabricated T-shaped beam and construction method thereof |
| CN219059720U (en) * | 2022-01-25 | 2023-05-23 | 江西省润邦工程技术研究有限公司 | Assembled transverse connection structure applied to small box girder |
-
2022
- 2022-01-25 CN CN202210089651.7A patent/CN114457666A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100069840A (en) * | 2008-12-17 | 2010-06-25 | 재단법인 포항산업과학연구원 | Construction method of continuous bridge using precast panel and steel box girder |
| CN105155399A (en) * | 2015-07-31 | 2015-12-16 | 中铁第四勘察设计院集团有限公司 | Small box girder bridge and building method thereof |
| CN208440965U (en) * | 2018-06-07 | 2019-01-29 | 广州市市政工程设计研究总院有限公司 | One kind is for no reason every formula UHPC small box girder structure |
| CN113136783A (en) * | 2021-03-18 | 2021-07-20 | 长江武汉航道工程局 | Prefabricated T-shaped beam and construction method thereof |
| CN219059720U (en) * | 2022-01-25 | 2023-05-23 | 江西省润邦工程技术研究有限公司 | Assembled transverse connection structure applied to small box girder |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114892552A (en) * | 2022-07-01 | 2022-08-12 | 安徽省公路桥梁工程有限公司 | Box girder type bridge reconstruction construction method |
| CN114892552B (en) * | 2022-07-01 | 2023-11-21 | 安徽省公路桥梁工程有限公司 | Box girder type bridge reconstruction construction method |
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