CN211472171U - Combined beam structure of prefabricated steel plate beam and combined bridge deck - Google Patents
Combined beam structure of prefabricated steel plate beam and combined bridge deck Download PDFInfo
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- CN211472171U CN211472171U CN201922185003.8U CN201922185003U CN211472171U CN 211472171 U CN211472171 U CN 211472171U CN 201922185003 U CN201922185003 U CN 201922185003U CN 211472171 U CN211472171 U CN 211472171U
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 138
- 239000010959 steel Substances 0.000 title claims abstract description 138
- 239000004567 concrete Substances 0.000 claims abstract description 27
- 239000002131 composite material Substances 0.000 claims description 57
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 12
- 238000003466 welding Methods 0.000 abstract description 5
- 238000009417 prefabrication Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
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Abstract
The utility model relates to a prefabricated assembled steel plate roof beam and combination bridge panel's combination beam structure, including a plurality of combination beam units and the linkage unit who is used for connecting two adjacent combination beam units, the combination beam unit includes the steel sheet roof beam, fix the bridge floor steel bottom plate on steel sheet roof beam flange board, the welding is at the steel crossbeam of steel sheet web tip, pour the combination bridge panel that the concrete formed on bridge floor steel bottom plate and pour the end crossbeam that the concrete formed on the steel crossbeam, realized the steel sheet roof beam, the whole prefabrication of combination bridge panel and end crossbeam. Compared with the prior art, the utility model has the advantages of simple structure, mechanical properties are good, the construction is convenient, the durability is good.
Description
Technical Field
The utility model belongs to the technical field of bridge engineering technique and specifically relates to a combination beam structure of prefabricated assembled steel sheet roof beam and combination decking is related to.
Background
At present, steel plate girder concrete composite beam structures in bridge engineering generally adopt professional steel structure processing and manufacturing plants to manufacture steel girders in factories, after the steel girders are transported to bridge positions to be hoisted and installed in place, the steel girders are connected into a whole through steel cross beams between connecting longitudinal girders, and then on-site civil engineering constructors set up templates to carry out bridge deck steel bar binding and concrete pouring construction. Because the bridge is generally positioned at an overhead and dangerous position where a canyon, a ground road, a railway or a river channel and the like need to be spanned, in the conventional construction process, constructors need to face the problems of installing and disassembling templates, connecting steel beams and the like for many times, steel bars are bound and concrete is poured on site, the traffic safety of vehicles with the ground road under the bridge is also influenced, the whole construction process is complex in procedure, the overhead operation danger is high, the construction period is long, and the influence on the surrounding environment is large; in terms of structural systems and durability, the conventional composite beam has the defects that the steel cross beams are large in arrangement quantity and complex in node, so that the on-site welding amount is large, the reinforced concrete bridge deck is easy to crack, poor in durability and difficult to match with the service life of a main structure, and the normal use of the bridge within the designed service life is influenced; the end steel beam is affected by the perennial corrosion of water leakage at the expansion joint, the durability is poor, and the maintenance is difficult due to the narrow end space.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a simple structure, mechanical properties are good prefabricated assembled steel plate roof beam and combination bridge deck's combination beam structure for overcoming the defect that above-mentioned prior art exists.
The purpose of the utility model can be realized through the following technical scheme:
a composite beam structure of prefabricated assembled steel plate beams and composite bridge decks comprises a plurality of composite beam units and connecting units for connecting two adjacent composite beam units; the combined beam unit comprises a steel plate beam, a bridge deck steel bottom plate fixed on a flange plate of the steel plate beam, a steel cross beam welded on a web plate at the end part of the steel plate beam, a combined bridge deck plate formed by pouring concrete on the bridge deck steel bottom plate and an end cross beam formed by pouring concrete on the steel cross beam, and the steel plate beam, the combined bridge deck plate and the end cross beam are integrally prefabricated.
Preferably, the combined bridge deck and the end beams are both of a combined structure made of steel and concrete.
Preferably, the combined bridge deck and the end cross beam are both provided with steel bars.
Preferably, the steel plate beam and the steel cross beam are both welded with shear nail connecting pieces.
Preferably, the combined beam unit is provided with a bridge deck perforated plate; the bridge deck perforated plate is welded on the bridge deck steel bottom plate.
More preferably, the connecting unit comprises a combined bridge connecting subunit and an end beam connecting subunit; the combined bridge connecting subunit and the end beam connecting subunit both comprise cast-in-place concrete and reinforcing steel bars.
More preferably, the combined bridge connecting sub-unit further comprises a combined bridge connecting sub-unit steel bottom plate and a combined bridge connecting sub-unit perforated plate; the two ends of the steel bottom plate of the connecting sub-unit of the combined bridge are respectively welded with the steel bottom plate of the bridge deck in two adjacent combined beam units; the combined bridge connecting sub-unit perforated plate is welded on the two bridge deck steel bottom plates and the combined bridge connecting sub-unit steel bottom plate.
More preferably, the combined bridge connecting subunit comprises a combined bridge connecting subunit perforated plate; the bridge deck steel bottom plates in the two adjacent combined beam units are welded; the combined bridge connecting sub-unit perforated plate is welded on the two bridge deck steel bottom plates.
More preferably, the connection mode of the combined bridge connecting sub-unit perforated plate and the bridge deck perforated plate is continuous connection or interval connection.
More preferably, the end beam connecting subunit further comprises an end beam connecting subunit steel beam and a shear pin connecting piece arranged on the beam; and two ends of the end beam connecting subunit steel beam are respectively welded with the steel beams in the end beams of the two adjacent combined beam units.
Compared with the prior art, the utility model has the advantages of it is following:
the construction is convenient, the factory prefabricated field assembly construction and the field template-free construction can be realized, and the construction period can be shortened by more than 50% compared with the construction of a conventional structure; the mechanical property is good, and the material characteristics of steel tensile strength and concrete compression resistance can be fully exerted; the steel quantity of the structure is economical, and the steel plate beam and the bridge deck are integrally prefabricated, so that the combined section can bear all loads except the dead weight, and the steel can be saved by about 20 percent compared with the conventional combined beam; the height of the beam body is low, the combined cross section is integrally prefabricated, the structural rigidity is high when the combined cross section bears load, the stress characteristic of the combined cross section can be fully utilized to effectively reduce the height of the beam body, and the height of the beam can be reduced by about 30-40% under the same condition; the composite bridge deck slab has the advantages that the durability is good, the steel plate is adopted in the tension area of the composite bridge deck slab, the problem that common reinforced concrete is prone to cracking and damage after being tensioned is solved, the end cross beam is of a steel-concrete composite structure, the problem of corrosion of a steel structure caused by narrow gaps among beams and concentrated water vapor is solved, the beam end steel structure overhauling and maintenance blind spots are avoided, the structure durability is improved, and the structure maintenance is facilitated.
Drawings
FIG. 1 is a schematic structural view of a prefabricated assembled steel plate girder composite girder bridge of the present invention;
FIG. 2 is a schematic structural view of a single steel plate girder and a bridge deck steel structure in the present invention;
fig. 3 is a schematic structural view of the composite beam unit of the present invention;
FIG. 4 is a schematic structural diagram of a middle composite bridge connecting subunit according to the present invention;
FIG. 5 is another schematic structural diagram of the middle composite bridge connecting sub-unit of the present invention;
fig. 6 is a schematic cross-sectional structural view of a composite bridge deck in the middle composite beam structure of the present invention;
fig. 7 is a schematic cross-sectional structure view of the middle end beam of the middle composite beam structure of the present invention.
The reference numbers in the figures indicate:
1. the bridge deck comprises steel plate girders, 2 shear nail connecting pieces, 3 bridge deck perforated plates, 4 bridge deck steel bottom plates, 5 steel cross beams, 6 combined bridge deck plates, 7 end cross beams, 8 reinforcing steel bars, 9 combined bridge connector units, 10 end cross beam connector units, 901 combined bridge connector unit steel bottom plates, 902 combined bridge connector unit perforated plates.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall fall within the protection scope of the present invention.
The utility model relates to a prefabricated assembled steel plate roof beam and combination bridge deck's combination beam structure, as shown in figure 1, combination beam structure include a plurality of combination beam unit and be used for connecting the linkage unit of two adjacent combination beam units.
As shown in fig. 2, the composite beam unit includes an i-shaped steel plate beam 1, a deck steel bottom plate 4 fixed on the flange plate of the steel plate beam 1, a steel cross beam 5 welded on the end web plate of the steel plate beam 1, a shear nail connecting member 2 welded on the flange plate and the steel cross beam 5 of the steel plate beam 1, and a deck perforated plate 3 welded on the deck steel bottom plate 4.
As shown in fig. 3, the composite beam unit further includes a composite deck slab 6 formed by casting concrete on the deck steel bottom plate 4 and an end beam 7 formed by casting concrete on the end steel beam 5, and the composite deck slab 6 and the end beam 7 are both of a composite structure made of steel and concrete. At the factory, the steel reinforcement 8 is first tied to the steel structure in figure 2 and then concrete is poured onto the deck steel bottom slab 4 and the steel cross beams 5 to form a composite deck slab 6 and end cross beams 7 as shown in figure 3. The steel plate beam 1, the combined bridge deck 6 and the end cross beam 7 are integrally prefabricated, and the prefabricated structure of the combined beam is realized.
When pouring is carried out, the bridge deck perforated plate 3 arranged on the bridge deck steel bottom plate 4 transmits shearing force and bending moment, so that concrete and the bridge deck steel bottom plate 4 form a combined bridge deck, and the combined bridge deck 6 and the steel plate girder 1 form a prefabricated steel-concrete combined girder through the shear nail connecting pieces 2 arranged on the flanges of the steel plate girder 1. The steel cross beam 5 is formed into a prefabricated combined end cross beam 7 by means of shear pin connections 2 provided on the end steel cross beam 5.
The connection unit comprises a combined bridge deck connection subunit and an end beam connection subunit, and the design of the combined bridge deck connection subunit has two schemes: firstly, as shown in fig. 4, the prefabricated beam comprises a combined bridge connector subunit steel bottom plate 901, a combined bridge connector subunit perforated plate 902 and cast-in-place concrete, two ends of the combined bridge connector subunit steel bottom plate 901 are respectively welded with the bridge deck steel bottom plates 4 in two adjacent combined beam units, the combined bridge connector subunit perforated plate 902 is placed or welded on the two bridge deck steel bottom plates 4 and the combined bridge connector subunit steel bottom plate 901, spans three bottom plates, and then the cast-in-place concrete is poured. Secondly, as shown in fig. 5, the bridge deck steel bottom plate 4 in two adjacent composite beam units is directly welded, the perforated plate 902 of the composite bridge connecting sub-unit is welded on the bridge deck steel bottom plate 4 and spans the two bridge deck steel bottom plates 4, and then the cast-in-place concrete is poured.
There are also two ways to weld the composite bridge connecting the subunit apertured plate 902: first, as shown in fig. 4, the combined bridge connecting subunit opening plate 902 and the bridge deck opening plate 3 are connected at intervals. Secondly, as shown in fig. 5, the combined bridge connecting sub-unit perforated plate 902 and the bridge deck perforated plate 3 are continuously connected, and both ends of the combined bridge connecting sub-unit perforated plate 902 are respectively welded with the bridge deck perforated plates 3 in two adjacent combined beam units.
It should be pointed out that, there are two kinds of connected modes of having or not bottom plate and combination bridge connector subunit trompil board in the combination bridge connector subunit in this embodiment can make up four kinds of schemes, and fig. 4 and fig. 5 have only listed two kinds, and two kinds of schemes can also arrive in the same way in addition, and four kinds of schemes all belong to the utility model discloses the mode that can implement.
Fig. 1 is a sectional view of the structure shown in fig. 6 and 7, fig. 6 is a sectional view of a composite bridge portion, fig. 7 is a sectional view of an end beam portion, and the structure of the end beam connector sub-unit is shown in fig. 7, and includes an end beam connector sub-unit steel beam, a shear pin connector 2 mounted on the steel beam, and cast-in-place concrete.
The concrete construction steps of the composite beam structure of the prefabricated steel plate beam and the composite bridge deck in the embodiment are as follows:
(1) manufacturing a steel structure frame of a steel plate beam 1 and a bridge deck steel bottom plate 4 shown in figure 2 on a factory jig frame;
(2) binding reinforcing steel bars 8 on the steel plate beam 1, and pouring concrete of the combined bridge deck 6 and the end cross beam 7 to form a prefabricated combined beam unit shown in the figure 3;
(3) transporting each prefabricated combined beam unit to a bridge construction site, and hoisting and placing in place;
(4) and welding two adjacent bridge deck steel bottom plates 4 or welding the bridge deck steel bottom plates 4 and the combined bridge connector unit steel bottom plates on site, welding the end steel cross beams 5 and the end cross beam connector unit steel cross beams, then connecting the combined bridge connector unit 9 and the combined bridge deck 6 and connecting the end cross beam connector unit 10 and reinforcing steel bars in the end cross beams 7, and finally pouring concrete to form the integrally stressed prefabricated steel plate beam combined beam structure.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A kind of prefabricated assembled steel plate girder and combination beam structure of the combined bridge deck slab, characterized by that, the said combination beam structure includes a plurality of combination beam units and is used for connecting the connecting element of two adjacent combination beam units; the combined beam unit comprises a steel plate beam (1), a bridge deck steel bottom plate (4) fixed on a flange plate of the steel plate beam (1), a steel cross beam (5) welded on a web plate at the end part of the steel plate beam (1), a combined bridge deck plate (6) poured on the bridge deck steel bottom plate (4) and an end cross beam (7) poured on the steel cross beam (5), and the steel plate beam (1), the combined bridge deck plate (6) and the end cross beam (7) are integrally prefabricated.
2. The composite beam structure of prefabricated assembled steel plate girder and composite bridge deck according to claim 1, wherein the composite bridge deck (6) and the end girders (7) are all steel-concrete composite structures made of steel and concrete.
3. The composite beam structure of prefabricated assembled steel plate girder and composite bridge deck as claimed in claim 1, wherein the composite bridge deck (6) and the end girders (7) are provided with reinforcing bars (8).
4. The composite beam structure of the prefabricated assembled steel plate beam and the composite bridge deck slab as claimed in claim 1, wherein the shear nail connecting pieces (2) are welded on the steel plate beam (1) and the steel cross beam (5).
5. A precast assembled steel plate girder and composite girder structure of composite deck slab according to claim 1, wherein the composite girder unit is provided with a deck opening plate (3); the bridge deck perforated plate (3) is welded on the bridge deck steel bottom plate (4).
6. The composite girder structure of prefabricated assembled steel plate girders and composite bridge decks according to claim 5, wherein the connection units comprise a composite bridge connection subunit (9) and an end cross member connection subunit (10); the combined bridge connecting subunit (9) and the end cross beam connecting subunit (10) both comprise cast-in-place concrete and reinforcing steel bars (8).
7. The composite beam structure of prefabricated assembled steel plate girder and composite bridge deck according to claim 6, wherein said composite bridge connecting sub-unit (9) further comprises a composite bridge connecting sub-unit steel bottom plate (901) and a composite bridge connecting sub-unit perforated plate (902); two ends of the steel bottom plate (901) of the connecting sub-unit of the combined bridge are respectively welded with the steel bottom plate (4) of the bridge deck in two adjacent combined beam units; the combined bridge connecting sub-unit perforated plate (902) is welded on the two bridge deck steel bottom plates (4) and the combined bridge connecting sub-unit steel bottom plate (901).
8. The composite beam structure of prefabricated assembled steel plate girder and composite bridge deck according to claim 6, wherein said composite bridge connecting subunit (9) comprises a composite bridge connecting subunit perforated plate (902); bridge deck steel bottom plates (4) in the two adjacent combined beam units are welded; the combined bridge connecting sub-unit perforated plate (902) is welded on the two bridge deck steel bottom plates (4).
9. The composite beam structure of prefabricated assembled steel plate girder and composite deck slab as claimed in claim 7 or 8, wherein the connection of the open slab (902) of the composite bridge connecting sub-unit and the open slab (3) of the bridge deck is a continuous connection or a spaced connection.
10. The composite beam structure of prefabricated assembled steel plate beam and composite deck slab of claim 6, wherein said end-to-end beam connector sub-unit (10) further comprises an end-to-end beam connector sub-unit steel beam and a shear pin connector (2) mounted on the beam; and two ends of the end beam connecting subunit steel beam are respectively welded with the steel beams (5) in the end beams of the two adjacent combined beam units.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922185003.8U CN211472171U (en) | 2019-12-09 | 2019-12-09 | Combined beam structure of prefabricated steel plate beam and combined bridge deck |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922185003.8U CN211472171U (en) | 2019-12-09 | 2019-12-09 | Combined beam structure of prefabricated steel plate beam and combined bridge deck |
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| CN211472171U true CN211472171U (en) | 2020-09-11 |
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| CN201922185003.8U Expired - Fee Related CN211472171U (en) | 2019-12-09 | 2019-12-09 | Combined beam structure of prefabricated steel plate beam and combined bridge deck |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113026555A (en) * | 2019-12-09 | 2021-06-25 | 上海浦东建筑设计研究院有限公司 | Combined beam structure of prefabricated steel plate beam and combined bridge deck |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113026555A (en) * | 2019-12-09 | 2021-06-25 | 上海浦东建筑设计研究院有限公司 | Combined beam structure of prefabricated steel plate beam and combined bridge deck |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200911 |
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| CF01 | Termination of patent right due to non-payment of annual fee |