CN217781703U - Parallel type highway and railway dual-purpose box and truss combined asymmetric loaded bridge structure - Google Patents
Parallel type highway and railway dual-purpose box and truss combined asymmetric loaded bridge structure Download PDFInfo
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- CN217781703U CN217781703U CN202221819021.2U CN202221819021U CN217781703U CN 217781703 U CN217781703 U CN 217781703U CN 202221819021 U CN202221819021 U CN 202221819021U CN 217781703 U CN217781703 U CN 217781703U
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Abstract
The utility model is suitable for a bridge technical field provides a parallel type highway and railway dual-purpose case purlin combination asymmetric loaded bridge structures, include: the steel box girder comprises a box girder main body; the two main trusses are arranged on the upper side of the steel box girder and are arranged at intervals along the transverse bridge direction, each main truss comprises an upper chord and a plurality of web members, and the web members are connected with the upper chord and the box girder main body; the connecting system comprises a cross connection and a bridge portal frame, the cross connection is connected with the two upper chords, and the bridge portal frame is connected with the cross connection and the two main trusses; the dual-purpose bridge floor system of highway railway, dual-purpose bridge floor system of highway railway includes highway bridge floor system and railway bridge floor system, all sets up on the steel box girder, the juncture of highway bridge floor system and railway bridge floor system is the cross slope junction. The utility model discloses a whole steel box girder, with main truss, the joint system participate in the atress jointly, form a whole, the cross-section is succinct, the leap over ability is big, satisfies the driving requirement of train and car.
Description
Technical Field
The utility model belongs to the technical field of the bridge, especially, relate to a parallel type combined asymmetric loaded bridge structure of highway and railway dual-purpose box purlin.
Background
With the development of the construction of the passenger dedicated line of the high-speed railway in large scale in China, the requirement of the railway bridge on the structural rigidity is increasingly high, and the steel-truss highway-railway dual-purpose bridge capable of meeting the good rigidity condition becomes an important choice in a long-span bridge spanning a large river.
At present, the existing large-span highway-railway combined bridge at home and abroad mostly adopts a structural form of layered co-construction, the layered co-construction means that highways and railways are respectively arranged at the upper layer and the lower layer of a bridge, and because the railways have higher requirements on stable operation, railway bridge floors are generally arranged at the lower layer, and highway bridge floors are arranged at the upper layer, but the structural form mainly has the following problems:
the bridge approach part has large scale, complex structure of combined construction transition position, high construction requirement and high difficulty due to the higher arrangement of the upper layer bridge deck;
compared with co-construction on the same layer, the beam has the advantages of larger height, small width-to-span ratio, large wind area and small transverse rigidity.
Therefore, the existing bridge structure is urgently needed to be improved, and a parallel type highway and railway dual-purpose box girder combined asymmetric loaded bridge structure is provided.
SUMMERY OF THE UTILITY MODEL
An object of the embodiment of the utility model is to provide a parallel type combined asymmetric loaded bridge structure of highway and railway dual-purpose box purlin to solve the problem that proposes among the above-mentioned background art.
The embodiment of the utility model provides a realize like this, a parallel type combined asymmetric loaded bridge structure of highway and railway dual-purpose case purlin, include:
the steel box girder comprises a box girder main body;
the two main trusses are arranged on the upper side of the steel box girder and are arranged at intervals along the transverse bridge direction, each main truss comprises an upper chord member and a plurality of web members, and the web members are connected with the upper chord member and the box girder main body;
a coupling system comprising a cross-bar connecting the two upper chords and a bridge portal connecting the cross-bar and the two main trusses;
the highway and railway dual-purpose bridge deck system comprises a highway bridge deck system and a railway bridge deck system, wherein the highway bridge deck system and the railway bridge deck system are both arranged on the steel box girder, and the junction of the highway bridge deck system and the railway bridge deck system is a cross slope junction.
Further, the box girder main body includes:
the stiffening assembly comprises a plate rib stiffening assembly, a U rib stiffening assembly and an inverted T rib stiffening assembly;
two maintenance vehicle tracks are arranged below the box girder main body bottom plate and are respectively positioned at two sides of the box girder main body bottom plate;
the diaphragm plate, the diaphragm plate has a plurality ofly, and is a plurality of diaphragm plate sets up along the vertical bridge to the interval.
Further, the main trusses are vertically arranged, and the width between the top ends of the two main trusses is equal to the width between the bottom ends of the two main trusses.
Further, the web member includes a plurality of montants and a plurality of down tube, and is a plurality of the montant is connected the upper chord member with the case roof beam main part, and set up to the interval along the longitudinal bridge, it is a plurality of the down tube slope sets up, and every the down tube is connected two adjacent the upside and the downside of montant.
Further, the railway bridge deck system comprises a railway maintenance walkway and a rail, the railway maintenance walkway is arranged on one side close to the main truss, and the stiffening assembly is arranged below the rail.
Furthermore, the highway bridge deck system and the railway bridge deck system are arranged in parallel and are asymmetrically loaded.
The embodiment of the utility model provides a parallel type highway-railway dual-purpose box girder combined asymmetric loaded bridge structure, steel box girder and steel truss structure are ingeniously combined together, it is different from the existing layering co-construction highway-railway dual-purpose bridge at home and abroad, wherein, the steel box girder is composed of box girder main body, the main truss is arranged on the upper side of the steel box girder, and the web member of the main truss is directly connected with the box girder main body, the connection system is connected with the main truss, so that the structure not only has good integrity, simple cross section and strong spanning capability, but also effectively reduces the height of the full bridge structure, saves the engineering cost and has good technical economy;
the integral steel box girder is adopted to participate in stress together with the main truss and the connecting system, so that the secondary internal force of the node is reduced, the transverse and vertical rigidity of the bridge is increased, and the transverse and vertical bending and torsion resistant inertia moment is improved;
the box girder main part has set up stiffening assembly and cross slab, has increased substantially the horizontal bending resistance inertia moment of girder under asymmetric loaded condition, improves wholeness and wind resistance when reducing main truss structure steel volume.
Drawings
Fig. 1 is a schematic cross-sectional view of a parallel type highway and railway dual-purpose box and girder combined asymmetric loaded bridge structure provided by an embodiment of the present invention;
fig. 2 is a schematic elevation view of a main truss in a parallel type highway and railway dual-purpose box and truss combined asymmetric loaded bridge structure provided by the embodiment of the utility model.
In the drawings: 1-steel box girder; 11-a box girder body; 111-a stiffening component; 112-maintenance car track; 113-diaphragm; 2-a main truss; 21-upper chord; 22-web member; 221-a vertical rod; 222-a diagonal rod; 3-a linking system; 31-transverse connection; 32-a portal frame; 4-a highway and railway dual-purpose bridge deck system; 41-a highway bridge deck system; 42-railway deck system; 421-railway maintenance walkway; 422-rail.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The following detailed description is provided to illustrate specific embodiments of the present invention.
As shown in fig. 1, for the utility model discloses a structure diagram that parallel form highway railway dual-purpose box purlin combined asymmetric loaded bridge structures that an embodiment provided includes:
the steel box girder comprises a steel box girder 1, wherein the steel box girder 1 comprises a box girder main body 11;
the number of the main trusses 2 is two, the two main trusses 2 are arranged on the upper side of the steel box girder 1, the two main trusses 2 are arranged at intervals in the transverse bridge direction, each main truss 2 comprises an upper chord member 21 and a plurality of web members 22, and the plurality of web members 22 are connected with the upper chord member 21 and the box girder main body 11;
a coupling system 3, said coupling system 3 comprising a crosspiece 31 and a bridge frame 32, said crosspiece 31 connecting two of said upper chords 21, said bridge frame 32 connecting said crosspiece 31 and two of said main trusses 2;
the highway and railway dual-purpose bridge deck system 4 comprises a highway bridge deck system 41 and a railway bridge deck system 42, the highway bridge deck system 41 and the railway bridge deck system 42 are both arranged on the steel box girder 1, and the junction of the highway bridge deck system 41 and the railway bridge deck system 42 is a cross slope junction.
The utility model discloses an embodiment, this asymmetric loaded bridge structures of combination of public railway dual-purpose case purlin of block considers the defect of the structural style that the layering was built altogether among the prior art, what adopt is the integrated configuration of steel case roof beam 1 and main truss 2, steel case roof beam 1 wholeness can be good, with main truss 2, the atress is participated in jointly to the hookup system 3, reduce node time internal force, increase the bridge is horizontal simultaneously, vertical rigidity, improve horizontal vertical anti-bending torsion moment of inertia, make the bridge form a whole, the cross-section is succinct, the leap over ability is big, can satisfy the driving requirement of train and car, not only the wholeness is good, the cross-section is succinct, stronger leap over ability has, and effectively reduce the full-bridge structure height, save engineering cost, has good technical economy, the maintenance is convenient, can satisfy the rigidity demand.
As shown in fig. 1, as a preferred embodiment of the present invention, the box girder main body 11 includes:
a stiffening component 111, said stiffening component 111 comprising a plate-rib stiffening component, a U-rib stiffening component, and an inverted T-rib stiffening component;
two maintenance vehicle rails 112 are arranged below the bottom plate of the box girder main body 11 and are respectively positioned at two sides of the bottom plate of the box girder main body 11;
the transverse partition plates 113 are provided, and the plurality of the transverse partition plates 113 are arranged at intervals along the longitudinal bridge direction.
The box girder main body 11 comprises a stiffening component 111, an inspection vehicle track 112 and a diaphragm plate 113, wherein the stiffening component 111 can adopt a plate rib stiffening component, a U rib stiffening component and an inverted T rib stiffening component, the diaphragm plate 113 can adopt a T-shaped member or a rectangular member, the stiffening component 111 and the diaphragm plate 113 greatly increase the transverse rigidity, the vertical rigidity and the bending resistance inertia moment of the girder, and the box girder has good stress performance.
As shown in fig. 1, as another preferred embodiment of the present invention, the main trusses 2 are vertically arranged, and the width between the top ends of the two main trusses 2 is equal to the width between the bottom ends of the two main trusses 2.
As shown in fig. 2, as a preferred embodiment of the present invention, the web member 22 includes a plurality of vertical rods 221 and a plurality of diagonal rods 222, and a plurality of the vertical rods 221 are connected to the upper chord 21 and the box girder 11, and are arranged along the longitudinal bridge direction at intervals, and a plurality of the diagonal rods 222 are obliquely arranged, and each of the diagonal rods 222 connects two adjacent upper sides and lower sides of the vertical rods 221.
The web members 22 may be box-type members or H-shaped members.
As shown in fig. 1, as a preferred embodiment of the present invention, the railway deck system 42 includes a railway maintenance walkway 421 and a rail 422, the railway maintenance walkway 421 is disposed near one side of the main truss 2, and the stiffening assembly 111 is disposed below the rail 422.
And a stiffening component 111 is arranged below the rail 422, wherein the stiffening component 111 is an inverted T-rib stiffening component, and can enhance the stress performance of the steel box girder 1 under uneven load.
As shown in fig. 1, as a preferred embodiment of the present invention, the road deck system 41 and the railway deck system 42 are arranged in parallel and are asymmetrically loaded.
The highway bridge deck system 41 and the railway bridge deck system 42 are arranged on the same plane, compared with the existing layered common-building highway-railway dual-purpose bridge at home and abroad, the highway bridge deck system and the railway bridge can effectively reduce the height of the bridge building and save the manufacturing cost, and adopt the form of asymmetric loading to respectively meet the highway requirement and the railway requirement.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. The utility model provides a parallel type highway railway dual-purpose case purlin combination asymmetric loaded bridge structures which characterized in that includes:
the steel box girder comprises a box girder main body;
the two main trusses are arranged on the upper side of the steel box girder and are arranged at intervals along the transverse bridge direction, each main truss comprises an upper chord member and a plurality of web members, and the web members are connected with the upper chord member and the box girder main body;
a coupling system comprising a cross-bar connecting the two upper chords and a bridge portal connecting the cross-bar and the two main trusses;
the highway and railway dual-purpose bridge deck system comprises a highway bridge deck system and a railway bridge deck system, wherein the highway bridge deck system and the railway bridge deck system are both arranged on the steel box girder, and the junction of the highway bridge deck system and the railway bridge deck system is a cross slope junction.
2. The asymmetric loaded bridge structure of combination formula highway railway box purlin of claim 1, characterized in that, the box girder main part includes:
the stiffening assembly comprises a plate rib stiffening assembly, a U rib stiffening assembly and an inverted T rib stiffening assembly;
two maintenance vehicle tracks are arranged below the box girder main body bottom plate and are respectively positioned at two sides of the box girder main body bottom plate;
the diaphragm plate, the diaphragm plate has a plurality ofly, and is a plurality of diaphragm plate sets up along the vertical bridge to the interval.
3. The asymmetric loaded bridge structure of combination type highway and railway dual-purpose box girder combination according to claim 1 or 2, characterized in that the main trusses are arranged vertically, and the width between the top ends of the two main trusses is equal to the width between the bottom ends of the two main trusses.
4. The asymmetric load-bearing bridge structure of combination formula highway railway dual-purpose case truss of claim 1, characterized in that, the web member includes a plurality of montants and a plurality of cant chisels, a plurality of the montants connect the upper chord member with the case roof beam main part, and set up along the longitudinal bridge to the interval, a plurality of the cant chisels slope sets up, and every cant chisels connect the upside and the downside of two adjacent montants.
5. The side-by-side combination asymmetric load-bearing bridge structure of claim 2, wherein the railway deck system comprises a railway service walkway and rails, the railway service walkway is disposed adjacent to one side of the main truss, and the stiffening assembly is disposed below the rails.
6. The combined asymmetric loaded bridge structure of the parallel highway and railway dual-purpose box girder according to claim 5, wherein the highway bridge deck system and the railway bridge deck system are arranged in parallel and are asymmetrically loaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221819021.2U CN217781703U (en) | 2022-06-29 | 2022-06-29 | Parallel type highway and railway dual-purpose box and truss combined asymmetric loaded bridge structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221819021.2U CN217781703U (en) | 2022-06-29 | 2022-06-29 | Parallel type highway and railway dual-purpose box and truss combined asymmetric loaded bridge structure |
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| Publication Number | Publication Date |
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| CN217781703U true CN217781703U (en) | 2022-11-11 |
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| CN202221819021.2U Active CN217781703U (en) | 2022-06-29 | 2022-06-29 | Parallel type highway and railway dual-purpose box and truss combined asymmetric loaded bridge structure |
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| CN (1) | CN217781703U (en) |
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2022
- 2022-06-29 CN CN202221819021.2U patent/CN217781703U/en active Active
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