CN216864788U - Steel-concrete combined box girder structure with wave-shaped top flange beam - Google Patents
Steel-concrete combined box girder structure with wave-shaped top flange beam Download PDFInfo
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- CN216864788U CN216864788U CN202123302139.6U CN202123302139U CN216864788U CN 216864788 U CN216864788 U CN 216864788U CN 202123302139 U CN202123302139 U CN 202123302139U CN 216864788 U CN216864788 U CN 216864788U
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Abstract
The utility model relates to a steel-concrete combined box girder structure with a waveform upper flange beam, which comprises a groove-shaped box girder, a concrete bridge deck and a beam; the groove-shaped box girder comprises a box girder bottom plate, a box girder web plate and a box girder top plate which are sequentially connected from bottom to top, wherein the box girder web plate is arranged on the left side and the right side of the box girder bottom plate, the ends of the box girder web plate are connected through a plurality of cross beams which are arranged at intervals along the longitudinal direction, and the upper ends of the cross beams are connected with a concrete bridge deck which is laid on the groove-shaped box girder through shear connectors; the cross beams comprise common cross beams and wave-shaped upper flange cross beams which are arranged in a staggered mode, and the common cross beams are lapped with the end parts of two adjacent concrete bridge deck boards; the wave-shaped upper flange beam is lapped on the middle part of the lower surface of the concrete bridge deck; this box girder structure transverse rigidity is big, can avoid the great steel-concrete combination box girder decking of span to transversely destroy, improves box girder structure bearing capacity, can effectively reduce concrete decking thickness, thereby makes the girder steel part have sufficient height to guarantee that steel-concrete combination box girder has sufficient bearing capacity.
Description
Technical Field
The utility model relates to the field of constructional engineering, in particular to a steel-concrete combined box girder structure with a waveform upper flange beam.
Background
With the rapid development of Chinese economy and the promotion of construction technology, the construction of steel bridges has entered the vigorous development stage, and urban viaducts, curve bridges and overpass bridges are constructed everywhere and are visible, wherein the overpass bridge is mostly a steel box girder bridge with large span, light weight and beautiful appearance as the preferred structural form. The cross section of the main girder of the steel box girder bridge is formed by a closed box section, a bottom plate and a web plate of the common steel box girder are steel structures, a bridge deck can adopt a concrete bridge deck or a steel bridge deck, and the adoption of the reinforced concrete bridge deck is economical when the span is less than 60 m. From the stress perspective, the concrete slab has good compression resistance, and the steel box girder has good tension function, thereby exerting the mechanical characteristics of the material, and having the advantages of high bearing capacity, good integral shape, strong torsion resistance, good durability, steel material recycling and the like.
When the transverse width of the steel-concrete combined box girder is large, the problem of insufficient transverse rigidity of the bridge deck is easy to occur. At present, the existing engineering usually adopts a mode of combining bridge decks or increasing the thickness of concrete bridge decks to increase the transverse rigidity of the bridge decks. However, the former increases the manufacturing cost and construction complexity of the bridge deck, the latter increases the concrete consumption, and under the condition that the overall height of the upper structure of the steel-concrete combined box girder bridge is not changed, the increase of the thickness of the concrete bridge deck inevitably leads to the reduction of the height of the steel box girder, thereby reducing the spanning capacity of the box girder. These problems all cause certain difficulties for the popularization and application of the structure, and a structural form of the steel-concrete combined box girder with larger transverse rigidity is needed.
Disclosure of Invention
The utility model aims to overcome the defects and provides a steel-concrete combined box girder structure with a wave-shaped upper flange beam.
The utility model solves the technical problem by adopting the scheme that the steel-concrete combined box girder structure with the wave-shaped upper flange beam comprises a groove-shaped box girder, a concrete bridge deck and a beam;
the groove-shaped box girder comprises a box girder bottom plate, box girder web plates and a box girder top plate which are sequentially connected from bottom to top, the box girder web plates are arranged on the left side and the right side of the box girder bottom plate, the box girder web plates on the two sides above the bottom plate are transversely arranged at intervals or not arranged with the box girder web plates positioned inside, the upper ends of two adjacent box girder web plates on the groove-shaped box girder are connected through a plurality of cross beams arranged at intervals along the longitudinal direction, and the upper ends of the cross beams are connected with a concrete bridge deck paved on the groove-shaped box girder through shear connectors;
the cross beams comprise common cross beams and wave-shaped upper flange cross beams which are arranged in a staggered mode, the common cross beams are in lap joint with the end portions of the two adjacent concrete bridge deck boards, and a connecting seam is formed between the common cross beams and the end portions of the two adjacent concrete bridge deck boards; the wave-shaped upper flange beam is lapped on the middle part of the lower surface of the concrete bridge deck;
the wave form upper flange crossbeam includes crossbeam bottom plate, crossbeam web, the wave form upper flange board that from top to bottom connects gradually, the wave form upper flange board includes horizontal bottom plate, symmetry and sets up the cantilever slab in horizontal bottom plate both sides top, and horizontal bottom plate is connected through the hang plate in cantilever slab inner, and the cantilever slab is parallel with horizontal bottom plate.
Further, the box girder web plates are corrugated plates or flat web plates; two ends of the wave-shaped upper flange beam are welded with the box girder web; when the box girder web plate is a corrugated plate, the connecting positions of the two ends of the corrugated upper flange cross beam and the box girder web plate are at wave crests or wave troughs of the corrugated plate.
Furthermore, the concrete bridge deck is provided with grooves, the grooves are located above the waveform upper flange beams and arranged at intervals along the length direction of the waveform upper flange beams, and after the concrete bridge deck is laid on the groove-shaped box beams, concrete is poured into the grooves to form post-pouring concrete blocks.
Further, the shear connector is mounted on the horizontal bottom plate.
Furthermore, the shear connector comprises long studs and short studs, a matrix long stud group consisting of a plurality of long studs, a matrix short stud group consisting of a plurality of short studs, the matrix long stud group and the matrix short stud group are alternately arranged along the length direction of the waveform upper flange beam, the matrix long stud group is arranged at the groove, the short stud group is arranged outside the groove, and the long studs extend into the post-cast concrete blocks in the groove.
Furthermore, the groove-shaped box girder is in a single-box single-chamber or single-box double-chamber or single-box multi-chamber or double-box single-chamber structure.
Furthermore, the beam and the concrete bridge deck are connected into a whole by the connecting joint between two adjacent concrete bridge decks through post-pouring concrete.
Compared with the prior art, the utility model has the following beneficial effects: the structure is reasonable, the transverse rigidity is large, the transverse damage to the steel-concrete combined box girder bridge deck slab with large span can be avoided, the bearing capacity of the box girder structure is improved, the thickness of the concrete bridge deck slab can be effectively reduced, the steel girder part has enough height, so that the steel-concrete combined box girder has enough bearing capacity, and the advantages of high bearing capacity, good integral type, strong torsion resistance and strong spanning capacity of the steel-concrete combined box girder are fully exerted.
Drawings
The utility model is further described with reference to the following figures.
Fig. 1 is a first structural schematic diagram of the box girder structure of embodiment 1.
Fig. 2 is a second structural schematic diagram of the box girder structure of embodiment 1.
FIG. 3 is a front view of a corrugated top flange beam.
FIG. 4 is a diagram of a peak junction configuration.
Fig. 5 is a view of a wave trough connection configuration.
Fig. 6 is a front view of the box girder structure of embodiment 2.
Fig. 7 is a front view of the box girder structure of embodiment 3.
Fig. 8 is a front view of the box girder structure of embodiment 4.
In the figure: the box girder comprises 1-box girder bottom plates, 2-box girder web plates, 3-box girder top plates, 4-common beams, 5-wave-shaped upper flange beams, 6-beam bottom plates, 7-beam web plates, 8-wave-shaped upper flange bottom plates, 9-inclined plates, 10-cantilever plates, 11-long studs, 12-short studs, 13-concrete-bridge deck plates, 14-grooves, 15-connecting seams and 16-right-angle triangular steel plates.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.
As shown in fig. 1-8, a steel-concrete composite box girder structure with a wave-shaped upper flange beam comprises a groove-shaped box girder, a concrete bridge deck 13 and a beam;
the groove-shaped box girder comprises a box girder bottom plate 1, box girder web plates 2 and a box girder top plate 3 which are sequentially connected from bottom to top, wherein the box girder web plates are arranged on the left side and the right side of the box girder bottom plate, the box girder web plates on the two sides above the bottom plate are transversely arranged at intervals or are not arranged inside, the upper ends of two adjacent box girder web plates on the groove-shaped box girder are connected through a plurality of cross beams arranged at intervals along the longitudinal direction, and the upper ends of the cross beams are connected with a concrete bridge deck paved on the groove-shaped box girder through shear connectors;
the beam comprises common beams 4 and wave-shaped upper flange beams 5 which are arranged in a staggered mode, the common beams are lapped with the end parts of two adjacent concrete bridge deck boards, and a connecting seam is formed between the common beams and the end parts of the two adjacent concrete bridge deck boards; the wave-shaped upper flange beam is lapped on the middle part of the lower surface of the concrete bridge deck;
wave form upper limb crossbeam is including crossbeam bottom plate 6, crossbeam web 7, the wave form upper limb board 8 that from top to bottom connects gradually, the wave form upper limb board includes horizontal bottom plate, symmetry and sets up cantilever plate 10 in horizontal bottom plate both sides top, and cantilever plate is inner to be connected horizontal bottom plate through hang plate 9, and cantilever plate and horizontal bottom plate are parallel
In this embodiment, the box girder web is a corrugated plate or a flat web, the corrugated plate has a horizontal cross section in the shape of trapezoidal wave fold or sinusoidal wave, the trapezoidal wave fold is a trapezoidal wave fold curve formed by connecting a regular trapezoid and an inverted trapezoid into a whole end to end, and the inclination angle of the inclined section of the trapezoidal wave fold is 30-60 °.
In the embodiment, two ends of the wave-shaped upper flange beam are welded and connected with the box girder web; when the box girder web plate is a flat web plate, the top surface of the cantilever plate is aligned to and welded with the top of the box girder web plate, and the beam bottom plate and the beam web plate are welded and connected with the side surface of the box girder web plate; when the box girder web plate is a corrugated plate, the connecting positions of the two ends of the corrugated upper flange beam and the box girder web plate are at the wave crests or the wave troughs of the corrugated plate; at the wave crest connection position, a beam bottom plate, a beam web plate and a wave crest plane are welded, and a cantilever plate is welded with an upper flange plate of a box beam web plate; at the wave trough joint, a beam bottom plate, a beam web plate and a wave trough plane are welded, two sides of the beam bottom plate are welded with two inclined planes in the cross section of the box girder web plate by adopting right-angle triangular steel plates 16, and a cantilever plate is welded with an upper flange plate of the box girder web plate.
In this embodiment, a groove 14 is formed in the concrete bridge deck, the groove is located above the wave-shaped upper flange beam and arranged at intervals along the length direction of the wave-shaped upper flange beam, and after the concrete bridge deck is laid on the groove-shaped box girder, concrete is poured into the groove to form a post-cast concrete block.
In this embodiment, the shear connection is mounted on a horizontal floor.
In this embodiment, the shear connector includes long studs 11, short studs 12, a matrix long stud group composed of a plurality of long studs, a matrix short stud group composed of a plurality of short studs, the matrix long stud group and the matrix short stud group being alternately arranged along the length direction of the waveform upper flange beam, the matrix long stud group being arranged at the groove, the short stud group being arranged outside the groove, and the long studs extending into the post-cast concrete blocks in the groove.
In this embodiment, the channel-shaped box girder has a single-box single-chamber or single-box double-chamber or single-box multi-chamber or double-box single-chamber structure.
In this embodiment, the connecting joint 15 between two adjacent concrete bridge decks on the trough-shaped box girder is located above the corrugated upper flange beam or the common beam 4, two ends of the common beam are welded with the trough-shaped box girder, studs are arranged above the corrugated upper flange beam or the common beam, and the connecting joint between the two adjacent concrete bridge decks connects the corrugated upper flange beam or the common beam and the concrete bridge deck into a whole through post-pouring concrete.
Example 1 as shown in fig. 1, the channel-shaped box girder is of a single-box double-chamber structure, and the cross beams are arranged at intervals of a wave-shaped upper flange cross beam and a common cross beam. The wave-shaped upper flange beam is provided with long and short bolt groups, the long bolt groups extend into the grooves of the concrete bridge deck to be connected with the bridge deck, and the short bolt groups are connected with the bridge deck through post-cast filling concrete; the wet joint of the bridge deck is arranged above the steel web plate of the groove-shaped box girder and the common cross beam and is connected with the bridge deck through short studs arranged above the wet joint.
Example 2 as shown in fig. 6, the channel-shaped box girder has a single-box single-chamber structure, and the cross beams are arranged at intervals of a wave-shaped upper flange cross beam and a common cross beam. The wet joint of the bridge deck is arranged above the steel web plate of the groove-shaped box girder and the common cross beam and is connected with the bridge deck through short studs arranged above the wet joint.
Example 3 as shown in fig. 7, the channel-shaped tank girder has a single-tank multi-chamber structure, and the cross beams are arranged at intervals between the wave-shaped upper flange cross beam and the common cross beam. The wet joint of the bridge deck is arranged above the steel web plate of the groove-shaped box girder and the common cross beam and is connected with the bridge deck through short studs arranged above the wet joint.
Example 4 as shown in fig. 8, the channel-shaped box girder has a double-box single-chamber structure, and the cross beams are arranged at intervals of a wave-shaped upper flange cross beam and a common cross beam. The wet joint of the bridge deck is arranged above the steel web plate of the groove-shaped box girder and the common cross beam and is connected with the bridge deck through short studs arranged above the wet joint.
If this patent discloses or refers to parts or structures that are fixedly connected to each other, the fixedly connected may be understood as: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).
In the description of this patent, it is to be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the patent, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.
The above-mentioned preferred embodiments, further illustrating the objects, technical solutions and advantages of the present invention, should be understood that the above-mentioned are only preferred embodiments of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a take reinforced concrete combination case girder construction of wave form upper limb crossbeam which characterized in that: comprises a groove-shaped box girder, a concrete bridge deck and a cross beam;
the groove-shaped box girder comprises a box girder bottom plate, box girder webs and a box girder top plate which are sequentially connected from bottom to top, the box girder webs are arranged on the left side and the right side of the box girder bottom plate, the box girder webs on the two sides above the bottom plate are arranged at intervals along the transverse direction or not arranged with the box girder webs positioned inside, the upper ends of two adjacent box girder webs on the groove-shaped box girder are connected through a plurality of cross beams arranged at intervals along the longitudinal direction, and the upper ends of the cross beams are connected with a concrete bridge deck laid on the groove-shaped box girder through shear connectors;
the cross beams comprise common cross beams and wave-shaped upper flange cross beams which are arranged in a staggered mode, the common cross beams are in lap joint with the end portions of the two adjacent concrete bridge deck boards, and a connecting seam is formed between the common cross beams and the end portions of the two adjacent concrete bridge deck boards; the corrugated upper flange cross beam is lapped on the middle part of the lower surface of the concrete bridge deck;
the wave form upper flange crossbeam includes crossbeam bottom plate, crossbeam web, the wave form upper flange board that from top to bottom connects gradually, the wave form upper flange board includes horizontal bottom plate, symmetry and sets up the cantilever slab in horizontal bottom plate both sides top, and horizontal bottom plate is connected through the hang plate in cantilever slab inner, and the cantilever slab is parallel with horizontal bottom plate.
2. The steel-concrete composite box girder structure with the corrugated upper flange beams as claimed in claim 1, wherein: the box girder web plate is a corrugated plate or a flat web plate; two ends of the wave-shaped upper flange beam are welded with the box girder web; when the box girder web plate is a corrugated plate, the connecting positions of the two ends of the corrugated upper flange beam and the box girder web plate are at the wave crests or the wave troughs of the corrugated plate.
3. The steel-concrete composite box girder structure with the corrugated upper flange beams as claimed in claim 1, wherein: the concrete bridge deck is provided with grooves, the grooves are located above the waveform upper flange beams and are arranged at intervals along the length direction of the waveform upper flange beams, and after the concrete bridge deck is laid on the groove-shaped box beams, concrete is poured into the grooves to form post-poured concrete blocks.
4. The steel-concrete composite box girder structure with the corrugated upper flange beams as claimed in claim 3, wherein: the shear connector is arranged on the horizontal bottom plate.
5. The steel-concrete composite box girder structure with the corrugated upper flange beams as claimed in claim 1, wherein: the groove-shaped box girder is in a single-box single-chamber or single-box double-chamber or single-box multi-chamber or double-box single-chamber structure.
6. The steel-concrete composite box girder structure with the corrugated upper flange beams as claimed in claim 1, wherein: and connecting joints between two adjacent concrete bridge decks are formed by pouring concrete to connect the cross beams and the concrete bridge decks into a whole.
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| CN202123302139.6U CN216864788U (en) | 2021-12-27 | 2021-12-27 | Steel-concrete combined box girder structure with wave-shaped top flange beam |
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| CN202123302139.6U CN216864788U (en) | 2021-12-27 | 2021-12-27 | Steel-concrete combined box girder structure with wave-shaped top flange beam |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114086458A (en) * | 2021-12-27 | 2022-02-25 | 福州大学 | Steel-concrete combined box girder structure with wave-shaped upper flange beam and construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114086458A (en) * | 2021-12-27 | 2022-02-25 | 福州大学 | Steel-concrete combined box girder structure with wave-shaped upper flange beam and construction method |
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