CN114790680A - Assembled steel box combination beam bridge - Google Patents
Assembled steel box combination beam bridge Download PDFInfo
- Publication number
- CN114790680A CN114790680A CN202210509278.6A CN202210509278A CN114790680A CN 114790680 A CN114790680 A CN 114790680A CN 202210509278 A CN202210509278 A CN 202210509278A CN 114790680 A CN114790680 A CN 114790680A
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- Prior art keywords
- steel box
- plate
- bridge
- shear
- plates
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 75
- 239000010959 steel Substances 0.000 title claims abstract description 75
- 239000004567 concrete Substances 0.000 claims abstract description 24
- 239000002131 composite material Substances 0.000 claims description 12
- 238000010008 shearing Methods 0.000 abstract description 5
- 239000011374 ultra-high-performance concrete Substances 0.000 description 29
- 238000010276 construction Methods 0.000 description 7
- 238000005192 partition Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Classifications
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- 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
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- 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
- E01D19/06—Arrangement, construction or bridging of expansion joints
-
- 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 steel box combined beam bridge, which belongs to the technical field of bridge engineering equipment and comprises: the steel box girders are provided with at least two steel box girders which are arranged in parallel; the concrete bridge deck is connected above the steel box girders, and at least two concrete bridge decks are arranged above each steel box girder; the shear connector is positioned on the top surface of the steel box girder and below the concrete bridge deck, and the concrete bridge deck is fixedly connected to the steel box girder through the shear connector; all the steel box girders are connected through a transverse connection plate; the shearing-resistant connecting piece comprises a cover plate and two shearing-resistant plates, and the cover plate is fixed above the two shearing-resistant plates. According to the assembled steel box combined beam bridge disclosed by the invention, the steel box beam adopts the inclined web plate, the shear strength and the stability of the web plate are greatly improved, the combined beam adopts the novel shear connector, the shear connector has better structural strength and good lifting resistance, the shear resistance of the combined beam is improved, and the assembled steel box combined beam bridge has good popularization value.
Description
Technical Field
The invention relates to the technical field of bridge engineering equipment, in particular to an assembled steel box combined beam bridge.
Background
The steel-concrete combined beam bridge is a beam bridge formed by connecting steel beams and concrete plates into a whole by connecting pieces, and the structure fully exerts the advantages that concrete bears larger compressive stress and steel bears larger shear stress. Meanwhile, the steel-concrete combined beam bridge has the characteristics of high bearing capacity, light dead weight, high rigidity and good ductility, and is a beam bridge structure which is most widely applied at the present stage.
However, the conventional steel-concrete composite girder has many disadvantages, such as easy crack at the joint between the stud and the concrete, poor overall performance of the steel-concrete composite girder, and the like, which are disadvantageous to the durability of the structure, and thus a girder bridge having a more optimized and rational structure, a good shearing resistance effect, and a stronger durability and integrity is required.
Disclosure of Invention
In order to solve the defects in the prior art, the invention aims to provide an assembled steel box composite girder bridge, wherein a steel box girder adopts an inclined web plate, the shear strength and the stability of the web plate are greatly improved, and a novel shear connector is adopted for the composite girder, so that the shear connector has better structural strength, good lifting resistance and good popularization value.
The technical scheme adopted by the invention for solving the technical problems is as follows:
provided is an assembled steel box composite girder bridge, including: the steel box girders are arranged in parallel, and the steel box girders are arranged in parallel; the concrete bridge deck is connected above the steel box girders, and at least two concrete bridge decks are arranged above each steel box girder; and the shear connector is positioned on the top surface of the steel box girder and below the concrete bridge deck, and the concrete bridge deck is fixedly connected to the steel box girder through the shear connector.
Specifically, the concrete bridge deck is an ultra-high performance concrete bridge deck (UHPC bridge deck).
Furthermore, all the steel box girders are connected through a transverse connection plate.
Furthermore, the shear connector comprises a cover plate and two shear resistant plates, and the cover plate is fixed above the two shear resistant plates.
Furthermore, the center lines of the two shear resistant plates are crossed and vertically connected, the cover plate is a circular plate, the edge of the cover plate is tangent to the edges of the two shear resistant plates, and the cover plate and the two shear resistant plates are integrally formed.
Furthermore, the cross section of the steel box girder is in a trapezoid shape with a wide top and a narrow bottom, the steel box girder comprises a top plate, a bottom plate and two inclined web plates, and an included angle between each inclined web plate and the horizontal direction is 45-80 degrees.
Furthermore, a transverse partition plate is arranged between the top plate and the bottom plate, and a circular hole is formed in the center of the transverse partition plate.
Further, the cross connecting plate comprises a vertical plate and side plates, one end of the vertical plate is connected with the inclined web, the other end of the vertical plate is connected with the side plates, bolt holes are formed in the side plates, and adjacent two side plates are connected through bolts.
Furthermore, a connecting notch matched with the shear connector is formed in the bottom of the UHPC bridge deck.
Further, adjacent UHPC bridge decks are connected by a longitudinal wet seam and a transverse wet seam.
Compared with the prior art, the invention has the beneficial effects that:
1. the assembled steel box combined beam bridge disclosed by the invention has the advantages that the structure is simple, the prefabricated assembling degree is high, the steel box beam, the novel shear connector and the UHPC bridge deck are processed and manufactured in a factory, only the pouring of a longitudinal wet joint and a transverse wet joint part of the UHPC is required to be completed on a construction site, the construction method is simple, and the construction time is saved;
2. according to the assembled steel box combined beam bridge disclosed by the invention, the two shear plates of the shear connector can resist the shear force along the length direction of the shear connector, the two vertically crossed shear plates can play a role in increasing the bonding effect of the steel box beam and the UHPC bridge deck slab together, the cover plate is arranged at one end of each shear plate to increase the vertical connection between the steel plate and the concrete, the shear connector is ensured to have enough anti-lifting capacity, and the structural strength of the novel shear connector is better;
3. the assembled steel box combination beam bridge disclosed by the invention adopts the transverse connection plates which are connected by bolts, so that the transverse connection plates are convenient to replace, and the problem that the transverse connection plates are difficult to maintain due to fatigue is solved.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings:
FIG. 1 is a schematic view of the structure of the present invention;
FIG. 2 is a schematic view of a steel box girder connection structure;
FIG. 3 is an exploded view of a steel box girder;
FIG. 4 is a schematic view of a diaphragm structure;
FIG. 5 is a schematic view of a shear connector structure;
fig. 6 is a schematic view of a cross-web structure.
In the figure: 1-steel box girders, 2-UHPC bridge decks, 3-transverse plates, 4-shear connectors, 5-top plates, 6-bottom plates, 7-inclined webs, 8-transverse partition plates, 9-vertical plates, 10-side plates, 11-bolt holes, 12-cover plates, 13-shear resistant plates, 14-longitudinal wet joints and 15-transverse wet joints.
Detailed Description
The present application will be described in further detail with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1-2, the present embodiment provides an assembled steel box composite girder bridge, which includes a steel box girder 1, a UHPC bridge deck 2, a shear connector 4, and a cross slab 3. The steel box girders 1 are arranged in parallel, and the steel box girders 1 are connected through a plurality of transverse clamping plates which are transversely arranged; the UHPC bridge deck plates 2 are arranged above the steel box girders 1, and the bridge deck plates and the steel box girders 1 are connected through a plurality of shear connectors 4. In this embodiment, the concrete bridge deck is a UHPC bridge deck 2, and adjacent UHPC bridge decks 2 are connected by a longitudinal wet joint 14 and a transverse wet joint 15.
Specifically, as shown in fig. 3 to 4, the cross section of the steel box girder 1 is in a trapezoidal shape with a wide top and a narrow bottom, the steel box girder 1 includes a top plate 5, a bottom plate 6 and two inclined web plates 7, and the two inclined web plates 7 are arranged on two sides of the top plate 5 and the bottom plate 6. The upper end of the inclined web plate 7 is welded with the top plate 5, and the lower end of the inclined web plate 7 is welded with the bottom plate 6. The inclined web plate 7 forms an included angle of 45-80 degrees with the horizontal direction. The bottom plate 6 is further welded with a plurality of transverse partition plates 8 to improve the stability of the steel box girder 1, the distance between every two adjacent transverse partition plates 8 in the length direction of the steel box girder 1 is 5-10 m, and circular holes are formed in the centers of the transverse partition plates 8, so that the steel box girder is convenient to maintain and reinforce.
As shown in fig. 5, the shear connector 4 includes a cover plate 12 and two shear plates 13, and the cover plate 12 is fixed above the two shear plates 13. Specifically, the two shear resistant plates 13 are vertically intersected at the same point and welded together, the intersection line of the two shear resistant plates 13 is the central line of the two shear resistant plates 13, the two ends of the shear resistant plates 13 along the intersection line are flush, and the bottom end of each shear resistant plate 13 is fixedly welded on the top plate 5. The cover plate 12 is vertical to the top ends of the two shear resistant plates 13, the cover plate 12 is a circular plate, and the edge of the cover plate 12 is tangent to the edges of the two shear resistant plates 13. And a connecting notch matched with the shear connector 4 is formed in the bottom of the UHPC bridge deck 2. The two shear plates 13 can resist shearing force along the length direction of the shear plates, the cover plate 12 is arranged at the upper end of each shear plate 13, vertical connection between the top plate 5 and the UHPC bridge deck 2 can be increased, and the shear connector 4 is guaranteed to have enough anti-lifting capacity. The structure that the edge of the cover plate 12 is tangent to the edge of the shear-resistant plate 13 can ensure that the shear-resistant plate 13 can also be in contact with the notch after the shear-resistant connector 4 is connected with the UHPC bridge deck 2, so as to improve the lifting-resistant capability, and in addition, the circular cover plate 12 can more conveniently realize the rapid alignment and installation of the shear-resistant connector 4 and the notch. The cover plate 12 and the shear resisting plate 13 are integrally cast and formed, and the structural strength is good.
As shown in fig. 6, the transverse plate 3 includes a vertical plate 9 and a side plate 10, one end of the vertical plate 9 is welded to the inclined web 7, the other end is welded to the side plate 10, a bolt hole 11 is formed in the side plate 10, and two adjacent side plates 10 are connected by a bolt. The distance between the transverse connection plates 3 arranged along the length direction of the bridge is 5m-10m, the transverse connection plates 3 are connected through bolts, replacement is convenient, and the problem that the transverse connection plates 3 are fatigue and difficult to maintain is solved.
The mounting method of the assembled steel box combined beam bridge comprises the following steps:
the UHPC bridge deck slab 2 is a prefabricated slab, adjacent UHPC bridge deck slabs 2 are connected through a longitudinal wet joint 14 and a transverse wet joint 15, UHPC is cast in place at the longitudinal wet joint 14 and the transverse wet joint 15, extended steel bars are arranged at the connecting positions of the adjacent UHPC bridge deck slabs 2 and are staggered with each other, and an upper layer of longitudinal and transverse reinforcing mesh and a lower layer of longitudinal and transverse reinforcing mesh are arranged in the UHPC bridge deck slabs 2. And a novel shear connector 4 connecting notch is reserved in the UHPC bridge deck 2 and corresponds to the position of the novel shear connector 4 arranged on the top plate 5 of the steel box girder 1.
During construction, firstly, a steel box girder 1, a UHPC bridge deck 2 and a transverse connection plate 3 are prefabricated in a factory, after the steel box girder 1, the UHPC bridge deck 2 and the transverse connection plate 3 are transported to a bridge site, a plurality of steel box girders 1 are connected through the transverse connection plate 3, then the prefabricated UHPC bridge deck 2 is installed on the plurality of steel box girders 1, a longitudinal wet joint 14 and a transverse wet joint 15 of the bridge deck and UHPC in a notch of a shear connector 4 of the UHPC bridge deck 2 are poured, and finally bridge deck pavement and other auxiliary facilities are constructed. The assembled steel box combination beam bridge is simple in structure and high in prefabricated assembling degree, the steel box beam 1, the novel shear connector 4 and the UHPC bridge deck 2 are all processed and manufactured in a factory, pouring of the UHPC vertical wet joint 14 and the UHPC transverse wet joint 15 is only needed to be completed on a construction site, the construction method is simple, and construction time is saved.
It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (9)
1. The utility model provides an assembled steel case combination beam bridge which characterized in that includes:
the steel box girders (1) are provided with at least two steel box girders (1) which are arranged in parallel;
the concrete bridge deck (2) is connected above the steel box girders (1), and at least two concrete bridge deck plates (2) are arranged above each steel box girder (1);
and the shear connector (4) is positioned on the top surface of the steel box girder (1) and below the concrete bridge deck (2), and the concrete bridge deck (2) is fixedly connected to the steel box girder (1) through the shear connector (4).
2. The assembled steel box composite girder bridge as claimed in claim 1, wherein the steel box girders (1) are connected by a cross slab (3).
3. An assembled steel box composite girder bridge according to claim 1, wherein the shear connector (4) comprises a cover plate (12) and two shear resistant plates (13), and the cover plate (12) is fixed above the two shear resistant plates (13).
4. The assembled steel box composite girder bridge as claimed in claim 2, wherein the center lines of the two shear resistant plates (13) are crossed and vertically connected, the cover plate (12) is a circular plate, the edge of the cover plate (12) is tangent to the edges of the two shear resistant plates (13), and the cover plate (12) and the two shear resistant plates (13) are integrally formed.
5. The assembled steel box combination beam bridge as claimed in claim 2, wherein the cross section of the steel box girder (1) is in a trapezoid shape with a wide top and a narrow bottom, the steel box girder (1) comprises a top plate (5), a bottom plate (6) and two inclined web plates (7), and the included angle between the inclined web plates (7) and the horizontal direction is 45-80 degrees.
6. An assembled steel box combined beam bridge as claimed in claim 5, wherein the bottom plate (6) is further provided with a diaphragm plate (8), and the center of the diaphragm plate (8) is provided with a circular hole.
7. The assembled steel box composite beam bridge as claimed in claim 5, wherein the cross plate (3) comprises a vertical plate (9) and a side plate (10), one end of the vertical plate (9) is connected with the inclined web (7), the other end of the vertical plate is connected with the side plate (10), the side plate (10) is provided with a bolt hole (11), and two adjacent side plates (10) are connected through a bolt.
8. The assembled steel box composite girder bridge as claimed in claim 1, wherein the bottom of the concrete deck slab (2) is provided with a connection notch adapted to the shear connector (4).
9. An assembled steel box composite girder bridge according to claim 8, wherein adjacent concrete bridge deck slabs (2) are connected by longitudinal wet joints (14) and transverse wet joints (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210509278.6A CN114790680A (en) | 2022-05-11 | 2022-05-11 | Assembled steel box combination beam bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210509278.6A CN114790680A (en) | 2022-05-11 | 2022-05-11 | Assembled steel box combination beam bridge |
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| Publication Number | Publication Date |
|---|---|
| CN114790680A true CN114790680A (en) | 2022-07-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210509278.6A Pending CN114790680A (en) | 2022-05-11 | 2022-05-11 | Assembled steel box combination beam bridge |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202090278U (en) * | 2011-03-18 | 2011-12-28 | 清华大学 | T-shaped anti-pulling connector with no resistance to longitudinal shearing force |
| CN106638254A (en) * | 2016-12-30 | 2017-05-10 | 湖南省交通规划勘察设计院 | Secondary main beam composite beam bridge using prefabricated composite bridge deck slabs and construction method of secondary main beam composite beam bridge |
| CN207619818U (en) * | 2017-08-22 | 2018-07-17 | 广东工业大学 | A kind of shearing resistance composite structure of the concrete of bridge |
| CN110184896A (en) * | 2019-04-18 | 2019-08-30 | 天津大学前沿技术研究院 | A kind of UHPC wafer board composite beam bridge shear connector and mounting structure and construction method |
| CN212128810U (en) * | 2019-11-14 | 2020-12-11 | 中交第一公路勘察设计研究院有限公司 | UHPC corrugated steel web narrow steel box type composite beam |
| CN213572625U (en) * | 2020-10-20 | 2021-06-29 | 华侨大学 | Novel shear connector suitable for steel plate-concrete composite plate |
| AU2021105107A4 (en) * | 2021-02-09 | 2021-09-30 | China Railway Bridge Science Research Institute, Ltd. | Steel-Concrete Composite Bridge Deck Structure and Bridge |
| CN215758474U (en) * | 2021-09-15 | 2022-02-08 | 湖北省交通规划设计院股份有限公司 | Assembled steel bridge of U-shaped section steel box girder |
| CN216340452U (en) * | 2021-11-26 | 2022-04-19 | 华侨大学 | Novel shear connector of steel-concrete composite beam |
-
2022
- 2022-05-11 CN CN202210509278.6A patent/CN114790680A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202090278U (en) * | 2011-03-18 | 2011-12-28 | 清华大学 | T-shaped anti-pulling connector with no resistance to longitudinal shearing force |
| CN106638254A (en) * | 2016-12-30 | 2017-05-10 | 湖南省交通规划勘察设计院 | Secondary main beam composite beam bridge using prefabricated composite bridge deck slabs and construction method of secondary main beam composite beam bridge |
| CN207619818U (en) * | 2017-08-22 | 2018-07-17 | 广东工业大学 | A kind of shearing resistance composite structure of the concrete of bridge |
| CN110184896A (en) * | 2019-04-18 | 2019-08-30 | 天津大学前沿技术研究院 | A kind of UHPC wafer board composite beam bridge shear connector and mounting structure and construction method |
| CN212128810U (en) * | 2019-11-14 | 2020-12-11 | 中交第一公路勘察设计研究院有限公司 | UHPC corrugated steel web narrow steel box type composite beam |
| CN213572625U (en) * | 2020-10-20 | 2021-06-29 | 华侨大学 | Novel shear connector suitable for steel plate-concrete composite plate |
| AU2021105107A4 (en) * | 2021-02-09 | 2021-09-30 | China Railway Bridge Science Research Institute, Ltd. | Steel-Concrete Composite Bridge Deck Structure and Bridge |
| CN215758474U (en) * | 2021-09-15 | 2022-02-08 | 湖北省交通规划设计院股份有限公司 | Assembled steel bridge of U-shaped section steel box girder |
| CN216340452U (en) * | 2021-11-26 | 2022-04-19 | 华侨大学 | Novel shear connector of steel-concrete composite beam |
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Application publication date: 20220726 |