CN211171560U - Steel diagonal brace combined PC beam - Google Patents
Steel diagonal brace combined PC beam Download PDFInfo
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- CN211171560U CN211171560U CN201921916838.XU CN201921916838U CN211171560U CN 211171560 U CN211171560 U CN 211171560U CN 201921916838 U CN201921916838 U CN 201921916838U CN 211171560 U CN211171560 U CN 211171560U
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- prestressed concrete
- box girder
- steel
- concrete box
- steel diagonal
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Abstract
The utility model relates to a steel diagonal brace combined PC beam, which comprises a prestressed concrete box beam and a steel diagonal brace; 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 utility model discloses a steel diagonal brace has reduced the material quantity of bridge upper portion and substructure for the increase of traditional single-box multi-chamber box girder bridge in order to adapt to bridge design width, then has better structural stability with steel box girder bridge relatively, diagonal brace and anchor assembly can mill prefabricated processing, and construction quality can promote, and construction period can optimize to the appearance is pleasing to the eye, has apparent economic benefits, has wide application prospect in the bridge field.
Description
Technical Field
The utility model relates to a bridge construction technical field, concretely relates to steel diagonal brace combination PC roof beam.
Background
When the design bridge width broad, the cross-section of conventional prestressed concrete box girder bridge can design into the form of single case multi-chambered, and must lead to structure upper portion load increase along with the increase of case room, and then makes the synchronous increase of engineering volume of lower part pier and pile foundation, arouses a series of problems such as heavy, the concrete construction square volume is big, engineering cost height of pier shape.
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 can meet the design requirement of a wider bridge and has higher rigidity, and can reduce the dead weight of the upper structure of the bridge, reduce the material consumption and reduce the workload of field construction becomes a problem to be solved urgently.
Disclosure of Invention
The utility model aims at providing a 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 steel diagonal brace combination PC roof beam which characterized in that:
the steel diagonal brace combined PC beam comprises a prestressed concrete box beam and a steel diagonal brace;
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 beam in a through length mode, and the upper end of the steel diagonal brace is fixed to the anchor beam through an anchoring part.
The anchor beams are symmetrically arranged along the center line of the prestressed concrete box girder.
The horizontal both ends of prestressed concrete box girder bottom plate are provided with anchor block, and anchor block longitudinal interval arranges, and steel diagonal brace lower extreme is fixed in anchor block through anchor assembly.
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, circular steel pipe and steel pipe concrete, and stiffening steel plates are arranged at two ends of the steel diagonal brace.
The anchoring part comprises anchor bars and anchor plates.
The prestressed concrete box girder comprises a prestressed concrete box girder top plate and a prestressed concrete box girder bottom plate, a vertical prestressed concrete box girder middle web plate and a vertical prestressed concrete box girder outer web plate are arranged between the prestressed concrete box girder top plate and the prestressed concrete box girder bottom plate, and the transverse two ends of the prestressed concrete box girder top plate are cantilever flanges of the prestressed concrete box girder.
The utility model has the advantages of it is following:
the utility model discloses a steel diagonal brace has reduced the material quantity of bridge upper portion and substructure for the increase of traditional single-box multi-chamber box girder bridge in order to adapt to bridge design width, then has better structural stability with steel box girder bridge relatively, diagonal brace and anchor assembly can mill prefabricated processing, and construction quality can promote, and construction period can optimize to the appearance is pleasing to the eye, has apparent economic benefits, has wide application prospect in the bridge field.
Drawings
Fig. 1 is a schematic view of the elevation structure of the steel diagonal brace combined PC beam along the beam length direction of the present invention.
Fig. 2 is the cross-sectional structure diagram of the steel diagonal brace combined PC beam of the present invention.
Fig. 3 is a schematic structural diagram of the steel diagonal strut anchorage in fig. 1 and 2.
Fig. 4 is a schematic cross-sectional structure diagram of the anchoring part of the steel diagonal brace.
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, 1-5-prestressed concrete box girder cantilever flange, 2-anchor beam, 3-steel diagonal brace, 4-anchor block, 5-anchor, 5-1-anchor bar, 5-2-anchor plate and 6-stiffening plate.
Detailed Description
The present invention will be described in detail with reference to the following embodiments.
The utility model relates to a steel diagonal brace combination PC roof beam, steel diagonal brace combination PC roof beam includes prestressed concrete box girder 1 and steel diagonal brace 3. The prestressed concrete box girder 1 comprises a prestressed concrete box girder top plate 1-1 and a prestressed concrete box girder bottom plate 1-2, a vertical prestressed concrete box girder middle web plate 1-3 and a prestressed concrete box girder outer web plate 1-4 are arranged between the prestressed concrete box girder top plate 1-1 and the prestressed concrete box girder bottom plate 1-2, and prestressed concrete box girder cantilever flanges 1-5 are arranged at the two transverse ends of the prestressed concrete box girder top plate 1-1. The upper ends of the steel diagonal braces 3 are fixed to the transverse outer ends of the cantilever flanges 1-5 of the prestressed concrete box girder, the lower ends of the steel diagonal braces 3 are fixed to the transverse outer ends of the prestressed concrete box girder bottom plates 1-2, and the steel diagonal braces 3 are longitudinally arranged at intervals and are bilaterally symmetrical.
The transverse outer end of the cantilever flange 1-5 of the prestressed concrete box girder is provided with an anchor beam 2 in a through length mode, and the upper end of the steel diagonal brace 3 is fixed to the anchor beam 2 through an anchoring part 5. The anchor beams 2 are symmetrically arranged along the center line of the prestressed concrete box girder 1.
The transverse ends of the prestressed concrete box girder bottom plates 1-2 are provided with anchor blocks 4, the anchor blocks 4 are longitudinally arranged at intervals, and the lower ends of the steel inclined stay bars 3 are fixed on the anchor blocks 4 through anchoring parts 5. The anchor blocks 4 are symmetrically arranged along the center line of the prestressed concrete box girder 1. The anchor blocks 4 are connected together through common steel bars of the beam body and are uniformly arranged at intervals of 2 m-10 m.
The steel diagonal brace 3 is one of section steel, square steel pipe, round steel pipe and steel pipe concrete, stiffening steel plates 6 are arranged at two ends of the steel diagonal brace, the stiffening plates 6 are uniformly arranged along the outer circumference of the steel diagonal brace 3, and the stiffening plates 6 are connected with the steel diagonal brace 3 and the anchor plate 5-2 in a welding mode.
The anchoring part 5 comprises an anchor bar 5-1 and an anchor plate 5-2 which are connected by welding, and the steel diagonal brace 3 is connected with the anchor plate 5-2 by welding or through a bolt.
The construction method of the steel diagonal brace combined PC beam is characterized by comprising the following steps of:
the method comprises the following steps:
step 1: processing a steel diagonal brace 3, a stiffening plate 6, an anchor bar 5-1 and an anchor plate 5-2 according to design requirements; and connecting the parts into a whole according to a designed connection mode;
step 2: binding prestressed concrete box girders 1, anchor girders 2 and anchor blocks 4 steel bars on a support template, and positioning and installing an integral component consisting of steel diagonal braces 3, stiffening plates 6, anchor bars 5-1 and anchor plates 5-2 according to design requirements;
and step 3: pouring beam concrete;
and 4, step 4: and (4) tensioning the prestress after the concrete strength reaches the design strength to form the steel diagonal brace combined PC beam.
The utility model relates to a 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, and construction convenience 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 (8)
1. The utility model provides a steel diagonal brace combination PC roof beam which characterized in that:
the steel diagonal brace combined PC beam comprises a prestressed concrete box beam (1) and a steel diagonal brace (3);
the upper ends of the steel diagonal braces (3) are fixed to the transverse outer ends of the cantilever flanges (1-5) of the prestressed concrete box girder, the lower ends of the steel diagonal braces (3) are fixed to the transverse outer ends of the prestressed concrete box girder bottom plates (1-2), and the steel diagonal braces (3) are longitudinally arranged at intervals and are bilaterally symmetrical.
2. The steel diagonal stay combined PC beam of claim 1, wherein:
the transverse outer end of the cantilever flange (1-5) of the prestressed concrete box girder is provided with an anchor beam (2) in a through length mode, and the upper end of the steel diagonal brace (3) is fixed on the anchor beam (2) through an anchoring part (5).
3. The steel diagonal stay combined PC beam of claim 2, wherein:
the anchor beams (2) are symmetrically arranged along the center line of the prestressed concrete box girder (1).
4. The steel diagonal stay combined PC beam of claim 3, wherein:
the horizontal both ends of prestressed concrete box girder bottom plate (1-2) are provided with anchor block (4), and anchor block (4) longitudinal interval arranges, and steel diagonal brace (3) lower extreme is fixed in anchor block (4) through anchor assembly (5).
5. The steel diagonal stay combined PC beam of claim 4, wherein:
the anchor blocks (4) are symmetrically arranged along the center line of the prestressed concrete box girder (1).
6. The steel diagonal stay combined PC beam of claim 5, wherein:
the steel diagonal brace (3) is one of section steel, square steel pipe, round steel pipe and steel pipe concrete, and stiffening steel plates (6) are arranged at two ends.
7. The steel diagonal stay combined PC beam of claim 6, wherein:
the anchoring piece (5) comprises an anchor bar (5-1) and an anchor plate (5-2).
8. The steel diagonal stay combined PC beam of claim 7, wherein:
the prestressed concrete box girder (1) comprises a prestressed concrete box girder top plate (1-1) and a prestressed concrete box girder bottom plate (1-2), wherein a vertical prestressed concrete box girder middle web plate (1-3) and a vertical prestressed concrete box girder outer web plate (1-4) are arranged between the prestressed concrete box girder top plate (1-1) and the prestressed concrete box girder bottom plate (1-2), and prestressed concrete box girder cantilever flanges (1-5) are arranged at the two transverse ends of the prestressed concrete box girder top plate (1-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921916838.XU CN211171560U (en) | 2019-11-08 | 2019-11-08 | Steel diagonal brace combined PC beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921916838.XU CN211171560U (en) | 2019-11-08 | 2019-11-08 | Steel diagonal brace combined PC beam |
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| Publication Number | Publication Date |
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| CN211171560U true CN211171560U (en) | 2020-08-04 |
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| CN201921916838.XU Active CN211171560U (en) | 2019-11-08 | 2019-11-08 | Steel diagonal brace combined PC beam |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110777633A (en) * | 2019-11-08 | 2020-02-11 | 中铁第一勘察设计院集团有限公司 | Steel diagonal brace combined PC beam and construction method thereof |
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2019
- 2019-11-08 CN CN201921916838.XU patent/CN211171560U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110777633A (en) * | 2019-11-08 | 2020-02-11 | 中铁第一勘察设计院集团有限公司 | Steel diagonal brace combined PC beam and construction method thereof |
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