CN211472116U - Railway assembled steel diagonal brace combination PC roof beam - Google Patents
Railway assembled steel diagonal brace combination PC roof beam Download PDFInfo
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- CN211472116U CN211472116U CN201921917044.5U CN201921917044U CN211472116U CN 211472116 U CN211472116 U CN 211472116U CN 201921917044 U CN201921917044 U CN 201921917044U CN 211472116 U CN211472116 U CN 211472116U
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Abstract
The utility model relates to a railway assembled steel diagonal brace combination PC roof beam, its assembled structure includes prestressed concrete box girder, prestressed concrete box girder cantilever flange and steel diagonal brace, prestressed concrete box girder cantilever flange is connected to the horizontal outer end of prestressed concrete box girder roof through the reinforcing bar, and the junction is horizontal concatenation face; the prestressed concrete box girders are longitudinally connected through reinforcing steel bars, and the joints are longitudinal splicing surfaces; the upper end of the steel diagonal brace is fixed to the transverse outer end of the cantilever flange of the prestressed concrete box girder, and the lower end of the steel diagonal brace is fixed to the transverse outer end of the prestressed concrete box girder bottom plate. The advantages of the prestressed concrete structure and the steel structure are fully utilized, the appearance is attractive, the stress is clear, the prefabricated construction can be carried out, the obvious economic benefit is achieved, and the bridge has wide application prospect in the field of bridges.
Description
Technical Field
The utility model relates to a bridge construction technical field, concretely relates to railway assembled steel diagonal brace combination PC roof beam.
Background
With the increasing heavy railway construction task, the traditional prefabricated double-line standard span simply-supported beam cannot meet the requirement of selecting the type of bridges at all bridge positions. For multi-line bridges, the bridge width is large, the requirement on the hoisting capacity is high during prefabrication and erection, generally, the multi-line bridge has fewer hole spans, and the economic benefit is poor. If the support is adopted for cast-in-place, the construction risk is higher when the bridge position is higher or a river is crossed, and the construction period is longer.
Aiming at the problems, the structural form of the steel box girder can reduce the upper load of the bridge, reduce the workload of on-site construction of the bridge and shorten the construction period, but for the bridge with strict rigidity requirement, the transverse rigidity of the wider steel box girder is smaller, and the transverse overturning problem is more prominent.
Therefore, the research on a bridge which is suitable for multi-line railways (wide bridge width), has large spanning capacity and attractive structural appearance and can be prefabricated and assembled in sections is an urgent problem to be solved.
Disclosure of Invention
The utility model aims at providing a railway assembled steel diagonal brace combination PC roof beam, but the advantage of make full use of prestressed concrete structure and steel construction solves prior art's problem, and the structure dead weight is light, construction convenience.
The utility model discloses the technical scheme who adopts does:
the utility model provides a railway assembled steel diagonal brace combination PC roof beam which characterized in that:
the railway assembly type steel diagonal brace combined PC beam is of an assembly type structure and comprises a prestressed concrete box beam, a prestressed concrete box beam cantilever flange and a steel diagonal brace;
the prestressed concrete box girder comprises a prestressed concrete box girder top plate, a prestressed concrete box girder bottom plate, a prestressed concrete box girder middle web plate and a prestressed concrete box girder outer web plate, wherein the prestressed concrete box girder cantilever flange is connected to the transverse outer end of the prestressed concrete box girder top plate through a steel bar, and the joint is a transverse splicing surface; the prestressed concrete box girders are longitudinally connected through reinforcing steel bars, and the joints are longitudinal splicing surfaces;
the upper ends of the steel inclined supporting rods are fixed to the transverse outer end of the cantilever flange of the prestressed concrete box girder, the lower ends of the steel inclined supporting rods are fixed to the transverse outer end of the prestressed concrete box girder bottom plate, and the steel inclined supporting rods are longitudinally arranged at intervals and are bilaterally symmetrical.
The transverse outer end of the cantilever flange of the prestressed concrete box girder is provided with an anchor girder in a through length mode, the anchor girder is connected to the cantilever flange of the prestressed concrete box girder through a steel bar, and the upper end of the steel diagonal brace is fixed to the anchor girder through an anchoring part.
The anchor beams are symmetrically arranged along the center line of the prestressed concrete box girder.
The transverse ends of the prestressed concrete box girder bottom plate are provided with anchor blocks which are longitudinally arranged at intervals and are connected to the prestressed concrete box girder bottom plate through reinforcing steel bars;
the lower end of the steel diagonal brace is fixed on the anchor block through an anchoring part.
The anchor blocks are symmetrically arranged along the center line of the prestressed concrete box girder.
The steel diagonal brace is one of section steel, square steel pipe, round steel pipe and steel pipe concrete.
The anchoring part comprises a stiffening plate and an end anchor plate, the end anchor plate is welded and fixed to the end part of the steel diagonal brace, and the stiffening plate is vertically welded and fixed to the periphery of the end part of the steel diagonal brace and the end anchor plate.
The anchor beam and the anchor block are provided with embedded parts corresponding to the anchoring parts, the embedded parts comprise anchor bars and embedded steel plates, the anchor bars are prefabricated in the anchor beam and the anchor block, and the embedded steel plates are fixedly connected with the anchor bars and are positioned on the end surfaces of the anchor beam and the anchor block;
and the end anchor plate of the anchoring part is fixedly connected with the embedded steel plate of the embedded part.
A zigzag connecting key is arranged on the transverse splicing surface, and epoxy resin glue is coated on the transverse splicing surface during transverse splicing;
the longitudinal splicing surface is provided with a sawtooth-shaped connecting key, and epoxy resin glue is coated on the longitudinal splicing surface during longitudinal splicing.
The utility model has the advantages of it is following:
the utility model adopts the steel diagonal brace to adapt to the increase of the designed width of the bridge, reduces the material consumption of the upper part and the lower part structure of the bridge compared with the traditional single-box multi-chamber box girder bridge, and has better structural rigidity and stability compared with the steel box girder bridge; the beam body components are prefabricated in a factory, transported and hoisted to the site to be spliced into a whole, so that the construction quality is improved, the construction period is optimized, the appearance is attractive, remarkable economic benefits are realized, and the bridge beam has a wide application prospect in the field of bridges.
Drawings
Fig. 1 is the elevation structure sketch map of the assembled steel diagonal brace combination PC roof beam of the utility model along the roof beam length direction of railway.
Fig. 2 is the utility model discloses a railway assembled steel diagonal brace combination PC roof beam cross section structure sketch map.
Fig. 3 is a schematic structural view of the steel diagonal strut anchor in fig. 1 and 2.
Fig. 4 is a schematic diagram of the steel diagonal brace embedded part structure in fig. 1 and 2.
In the figure, 1-prestressed concrete box girder, 1-prestressed concrete box girder top plate, 1-2-prestressed concrete box girder bottom plate, 1-3-prestressed concrete box girder middle web plate, 1-4-prestressed concrete box girder outer web plate, 2-prestressed concrete box girder cantilever flange, 3-anchor beam, 4-steel diagonal brace, 5-anchor block, 6-embedded part, 6-1-anchor bar, 6-2-embedded steel plate, 7-anchor block, 7-1-stiffening plate, 7-2-end anchor plate, 8-transverse splicing surface and 9-longitudinal splicing surface.
Detailed Description
The present invention will be described in detail with reference to the following embodiments.
The utility model relates to a railway assembled steel diagonal brace combination PC roof beam is the assembled structure, including prestressed concrete box girder 1, prestressed concrete box girder cantilever edge of a wing 2 and steel diagonal brace 4. The prestressed concrete box girder 1 comprises a prestressed concrete box girder top plate 1-1, a prestressed concrete box girder bottom plate 1-2, a prestressed concrete box girder middle web plate 1-3 and a prestressed concrete box girder outer web plate 1-4, wherein a prestressed concrete box girder cantilever flange 2 is connected to the transverse outer end of the prestressed concrete box girder top plate 1-1 through a steel bar, and the joint is a transverse splicing surface 8; the prestressed concrete box girder cantilever flanges 2 of the plurality of sections of prestressed concrete box girders 1 and the prestressed concrete box girders of the sections of prestressed concrete box girders 1 are longitudinally connected through reinforcing steel bars, and the joint is a longitudinal splicing surface 9. The upper ends of the steel diagonal braces 4 are fixed to the transverse outer end of the cantilever flange 2 of the prestressed concrete box girder, the lower ends of the steel diagonal braces 4 are fixed to the transverse outer end of the prestressed concrete box girder bottom plate 1-2, and the steel diagonal braces 4 are longitudinally arranged at intervals and are bilaterally symmetrical.
The transverse outer end of the cantilever flange 2 of the prestressed concrete box girder is provided with an anchor beam 3 in a through length mode, the anchor beam 3 is connected to the cantilever flange 2 of the prestressed concrete box girder through a steel bar, and the upper end of the steel diagonal brace 4 is fixed to the anchor beam 3 through an anchoring part 7. The anchor beams 3 are symmetrically arranged along the center line of the prestressed concrete box girder 1.
The transverse ends of the prestressed concrete box girder bottom plate 1-2 are provided with anchor blocks 5, the anchor blocks 5 are longitudinally arranged at intervals, and the anchor blocks 5 are connected to the prestressed concrete box girder bottom plate 1-2 through reinforcing steel bars; the lower end of the steel diagonal brace 3 is fixed on the anchor block 4 through an anchoring piece 5. The anchor blocks 5 are symmetrically arranged along the center line of the prestressed concrete box girder 1.
The steel diagonal brace 4 is one of section steel, square steel pipe, round steel pipe and steel pipe concrete. The anchoring part 7 comprises a stiffening plate 7-1 and an end anchor plate 7-2, the end anchor plate 7-2 is fixedly welded to the end part of the steel diagonal brace 4, and the stiffening plate 7-1 is vertically fixedly welded to the periphery of the end part of the steel diagonal brace 4 and the end anchor plate 7-2. The anchor beam 3 and the anchor block 5 are provided with embedded parts 6 corresponding to the anchoring parts 7, each embedded part 6 comprises an anchor bar 6-1 and an embedded steel plate 6-2, the anchor bar 6-1 is prefabricated in the anchor beam 3 and the anchor block 5, and the embedded steel plate 6-2 is fixedly connected with the anchor bar 6-1 and is positioned on the end surfaces of the anchor beam 3 and the anchor block 5; the end anchor plate 7-2 of the anchor part 7 is fixedly connected with the embedded steel plate 6-2 of the embedded part 6 through bolts.
A zigzag connecting key is arranged on the transverse splicing surface 8, and epoxy resin glue is coated on the transverse splicing surface 8 during transverse splicing; the longitudinal splicing surface 9 is provided with a sawtooth-shaped connecting key, and the longitudinal splicing surface 9 is coated with epoxy resin glue during longitudinal splicing.
The construction method of the railway assembled steel diagonal brace combined PC beam is characterized by comprising the following steps of:
the method comprises the following steps:
step 1: prefabricating a prestressed concrete box girder 1 with an anchor block 5 and a prestressed concrete box girder cantilever flange 2 with an anchor beam 3 according to design requirements, and processing a steel diagonal brace 4, an anchor bar 6-1 and an embedded steel plate 6-2 of an embedded part 6, and a stiffening plate 7-1 and an end anchor plate 7-2 of an anchor part 7; connecting an anchor bar 6-1 and an embedded steel plate 6-2 into a whole, then embedding the whole at the designed positions of an anchor beam 3 and an anchor block 5, and connecting a steel diagonal brace 4, a stiffening plate 7-1 and an end anchor plate 7-2 into a whole according to a designed connection mode;
step 2: hoisting each prefabricated part to a designed position of the bridge by using a bridge girder erection machine;
and step 3: coating epoxy resin glue on the transverse splicing surface 8;
and 4, step 4: installing a steel diagonal brace 4 on the bridge girder erection machine, and connecting an anchoring piece 7 at the end part of the steel diagonal brace 4 with the anchor beam 3 and an embedded part 6 in the anchor block 4;
and 5: stretching the transverse prestress, and connecting the transverse components to form a longitudinal spliced beam section;
step 6: repeating the steps 2 to 5 to form all longitudinal splicing sections of the whole hole beam;
and 7: coating epoxy resin glue on the longitudinal splicing surface 9;
and 8: and (4) tensioning the full-bridge longitudinal prestressed steel beam according to design requirements to form the steel diagonal brace combined PC beam.
The utility model discloses a railway assembled steel diagonal brace combination PC roof beam and construction method thereof, make full use of the advantage of prestressed concrete structure and steel construction, the appearance is pleasing to the eye, and the atress is clear and definite, can prefabricate the assembled construction, has apparent economic benefits, has wide application prospect in the bridge field.
The content of the present invention is not limited to the examples, and any equivalent transformation adopted by the technical solution of the present invention is covered by the claims of the present invention by those skilled in the art through reading the present invention.
Claims (9)
1. The utility model provides a railway assembled steel diagonal brace combination PC roof beam which characterized in that:
the railway assembly type steel diagonal brace combined PC beam is of an assembly type structure and comprises a prestressed concrete box beam (1), a prestressed concrete box beam cantilever flange (2) and a steel diagonal brace (4);
the prestressed concrete box girder (1) comprises a prestressed concrete box girder top plate (1-1), a prestressed concrete box girder bottom plate (1-2), a prestressed concrete box girder middle web plate (1-3) and a prestressed concrete box girder outer web plate (1-4), wherein a cantilever flange (2) of the prestressed concrete box girder is connected to the transverse outer end of the prestressed concrete box girder top plate (1-1) through a steel bar, and the joint is a transverse splicing surface (8); the prestressed concrete box girders (1) of a plurality of sections are longitudinally connected with the cantilever flanges (2) of the prestressed concrete box girders (1) of each section through reinforcing steel bars, and the joints are longitudinal splicing surfaces (9);
the upper ends of the steel diagonal braces (4) are fixed to the transverse outer ends of the cantilever flanges (2) of the prestressed concrete box girder, the lower ends of the steel diagonal braces (4) are fixed to the transverse outer ends of the prestressed concrete box girder bottom plates (1-2), and the steel diagonal braces (4) are longitudinally arranged at intervals and are bilaterally symmetrical.
2. The railway assembled steel diagonal brace combined PC beam of claim 1, wherein:
the transverse outer end of the cantilever flange (2) of the prestressed concrete box girder is provided with an anchor beam (3) in a through length mode, the anchor beam (3) is connected to the cantilever flange (2) of the prestressed concrete box girder through a steel bar, and the upper end of the steel diagonal brace (4) is fixed on the anchor beam (3) through an anchoring part (7).
3. The railway assembled steel diagonal brace combined PC beam of claim 2, wherein:
the anchor beams (3) are symmetrically arranged along the center line of the prestressed concrete box girder (1).
4. The railway assembled steel diagonal brace combined PC beam of claim 3, wherein:
the transverse ends of the prestressed concrete box girder bottom plates (1-2) are provided with anchor blocks (5), the anchor blocks (5) are longitudinally arranged at intervals, and the anchor blocks (5) are connected to the prestressed concrete box girder bottom plates (1-2) through reinforcing steel bars;
the lower end of the steel diagonal brace (4) is fixed on the anchor block (5) through an anchoring piece (7).
5. The railway assembled steel diagonal brace combined PC beam of claim 4, wherein:
the anchor blocks (5) are symmetrically arranged along the center line of the prestressed concrete box girder (1).
6. The railway assembled steel diagonal brace combined PC beam of claim 5, wherein:
the steel diagonal brace (4) is one of section steel, square steel pipe, round steel pipe and steel pipe concrete.
7. The railway assembled steel diagonal brace combined PC beam of claim 6, wherein:
the anchoring piece (7) comprises a stiffening plate (7-1) and an end anchoring plate (7-2), the end anchoring plate (7-2) is fixedly welded to the end part of the steel diagonal strut (4), and the stiffening plate (7-1) is vertically fixedly welded to the periphery of the end part of the steel diagonal strut (4) and the end anchoring plate (7-2).
8. The railway assembled steel diagonal brace combined PC beam of claim 7, wherein:
the anchor beam (3) and the anchor block (5) are provided with embedded parts (6) corresponding to the anchoring parts (7), each embedded part (6) comprises an anchor bar (6-1) and an embedded steel plate (6-2), the anchor bars (6-1) are prefabricated in the anchor beam (3) and the anchor block (5), and the embedded steel plates (6-2) are fixedly connected with the anchor bars (6-1) and are positioned on the end surfaces of the anchor beam (3) and the anchor block (5);
an end anchor plate (7-2) of the anchoring piece (7) is fixedly connected with an embedded steel plate (6-2) of the embedded part (6).
9. The railway assembled steel diagonal brace combined PC beam of claim 8, wherein:
a zigzag connecting key is arranged on the transverse splicing surface (8), and epoxy resin glue is coated on the transverse splicing surface (8) during transverse splicing;
the longitudinal splicing surface (9) is provided with a sawtooth-shaped connecting key, and the longitudinal splicing surface (9) is coated with epoxy resin glue during longitudinal splicing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921917044.5U CN211472116U (en) | 2019-11-08 | 2019-11-08 | Railway assembled steel diagonal brace combination PC roof beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921917044.5U CN211472116U (en) | 2019-11-08 | 2019-11-08 | Railway assembled steel diagonal brace combination PC roof beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211472116U true CN211472116U (en) | 2020-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921917044.5U Active CN211472116U (en) | 2019-11-08 | 2019-11-08 | Railway assembled steel diagonal brace combination PC roof beam |
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| Country | Link |
|---|---|
| CN (1) | CN211472116U (en) |
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2019
- 2019-11-08 CN CN201921917044.5U patent/CN211472116U/en active Active
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