CN216739199U - Anti-overturning structure of steel box girder - Google Patents
Anti-overturning structure of steel box girder Download PDFInfo
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- CN216739199U CN216739199U CN202123079379.4U CN202123079379U CN216739199U CN 216739199 U CN216739199 U CN 216739199U CN 202123079379 U CN202123079379 U CN 202123079379U CN 216739199 U CN216739199 U CN 216739199U
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Abstract
The utility model relates to the technical field of bridge engineering, in particular to an anti-overturning structure of a steel box girder, which is used for connecting the steel box girder with an abutment; the steel box girder comprises concrete poured in the steel box girder and connecting steel bars pre-embedded in an abutment; and the other end of the connecting steel bar sequentially penetrates through the steel box girder and the concrete and is fixedly connected with the concrete. The utility model discloses can be effectual link together steel case roof beam and pier, avoid the risk of toppling and falling the roof beam that the bridge probably faces, also not influence the longitudinal displacement of the roof beam body under the temperature effect.
Description
Technical Field
The utility model relates to a bridge engineering technical field, specific theory is an antidumping structure of steel case roof beam.
Background
The steel box girder is convenient to process due to the material, has strong structural bearing capacity, and is suitable for various special-shaped landscape bridges and curved bridges. Because of structure dysmorphism or plane are the curve, and the steel construction dead weight is lighter, very easily leads to appearing the support negative reaction and support void promptly (often in beam-ends support), adopts in prior art in relevant position department counter weight concrete, nevertheless has following problem:
1. the problem of support seat void can not be completely solved by the counterweight concrete, and the concrete counterweight in the space in the box can not meet the balance requirement;
2. the pier beam is completely solidified and cannot release temperature force, and the bending moment of the top and the bottom of the pier is large;
3. the beam falling prevention stop block and the beam falling prevention cover limiting measure have the advantages that the limiting space is limited, the beam falling problem under the extreme condition can not be solved, the beam falling prevention cover is only suitable for the cylindrical pier, the application range is limited, and the support can not be replaced.
SUMMERY OF THE UTILITY MODEL
In order to effectively solve the problems, the utility model aims to provide an anti-overturning structure of a steel box girder; the steel box girder and the abutment are connected together, so that the risks of overturning and girder falling which the bridge possibly faces are avoided, and the longitudinal displacement of the girder body under the temperature action is not influenced.
The utility model discloses a following technical scheme realizes:
an anti-overturning structure of a steel box girder is used for connecting the steel box girder with an abutment; the method comprises the following steps of pouring concrete in a steel box girder and connecting steel bars pre-buried in a pier; and the other end of the connecting steel bar sequentially penetrates through the steel box girder and the concrete and is fixedly connected with the concrete.
Furthermore, in order to better realize the utility model,
the device also comprises a support arranged between the steel box girder and the abutment.
Furthermore, in order to better realize the utility model,
and an anchorage device connected with the connecting steel bar is embedded in the pier.
Furthermore, in order to better realize the utility model,
the anchorage device comprises an anchorage device body and a spiral rib which is arranged on one side of the anchorage device body close to the steel box girder and sleeved on the outer side of the connecting steel bar.
Furthermore, in order to better realize the utility model,
the anchorage device is also provided with a first steel pipe; the steel pipe suit connects the outside of reinforcing bar, and is located between spiral muscle and the connecting reinforcement.
Furthermore, in order to better realize the utility model,
the top surface of concrete is provided with and is used for the fixed connection reinforcing bar to keep away from one section fixing device of pier.
Furthermore, in order to better realize the utility model,
the fixing device comprises a steel plate arranged on the top surface of the concrete, and a nut arranged on the steel plate and sleeved on the outer side of the connecting steel bar.
Furthermore, in order to better realize the utility model,
a second steel pipe is arranged in the concrete, and the second steel pipe is sleeved outside the connecting steel bar; and one end of the second steel pipe close to the pier is coplanar with the bottom of the steel box girder.
Furthermore, in order to better realize the utility model,
and a reinforcing mesh is arranged in the concrete.
Compared with the prior art, the utility model, following advantage and beneficial effect have:
(1) the utility model effectively realizes the connection of the steel box girder and the abutment through the mutual matching of the support and the connecting steel bars, avoids the risks of overturning and girder falling possibly faced by the bridge, and does not influence the longitudinal displacement of the girder body under the temperature action;
(2) the utility model discloses simple structure, practicality are strong.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic sectional structure of the present invention;
1, a nut; 2. a steel plate; 3. a reinforcing mesh; 4. counterweight concrete; 51. a first steel pipe; 52. a second steel pipe; 6. connecting reinforcing steel bars; 7. a spiral rib; 8. an anchor body; 9. pier abutment; 10. A steel box girder; 20. and (4) a support.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar components or components having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or member referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The present invention will be described in further detail with reference to examples, but the present invention is not limited thereto.
As shown in fig. 1-2:
an anti-overturning structure of a steel box girder 10 is used for connecting the steel box girder 10 with an abutment; the steel box girder comprises concrete poured in a steel box girder 10 and connecting steel bars 6 pre-buried in a pier; and the other end of the connecting steel bar 6 sequentially penetrates through the steel box girder 10 and the concrete and is fixedly connected with the concrete.
Further, in order to better realize the utility model, the bottom of the steel box girder 10 is supported;
and a support 20 arranged between the steel box girder 10 and the abutment.
Furthermore, in order to better realize the utility model, the connection of the connecting steel bar 6 in the abutment is firmer for effective realization;
an anchorage device connected with the connecting steel bar 6 is embedded in the abutment.
Furthermore, in order to better realize the utility model,
the anchorage device comprises an anchorage device body 8 and a spiral rib 7 which is arranged on one side of the anchorage device body 8 close to the steel box girder 10 and sleeved on the outer side of the connecting reinforcing steel bar 6.
Preferably, when the connecting bars 6 are twisted bars, the anchorage is a twisted bar anchorage, so that the anchorage is more in place.
Furthermore, in order to better realize the utility model,
the anchorage device is also provided with a first steel pipe 51; the first steel pipe 51 is sleeved on the outer side of the connecting steel bar 6 and is located between the spiral rib 7 and the connecting steel bar 6.
Furthermore, in order to better realize the utility model, the connection between the connecting steel bars 6 and the counterweight concrete 4 is effectively realized;
the top surface of concrete is provided with the fixing device who is used for one section of fixed connection reinforcing bar 6 keep away from the pier.
Furthermore, in order to better realize the utility model,
fixing device is including installing steel sheet 2 at the concrete top surface, installing on steel sheet 2 and the suit is at the nut 1 in the 6 outsides of connecting reinforcement.
Furthermore, in order to better realize the utility model,
a second steel pipe 52 is arranged in the concrete, and the second steel pipe 52 is sleeved on the outer side of the connecting steel bar 6; one end of the second steel pipe 52 close to the abutment is coplanar with the bottom of the steel box girder 10.
Furthermore, in order to better realize the utility model,
and a reinforcing mesh 3 is arranged in the concrete.
Preferably, the first steel pipe 51 and the second steel pipe 52 have the same structure and are both rectangular steel pipes with rectangular sections; this enables the connecting reinforcement 6 to be bent at a small angle in the longitudinal direction so that the longitudinal displacement of the steel box girder 10 under the temperature is not affected.
When the pier is constructed, the connecting steel bars 6 are pre-buried in the pier, the connecting steel bars 6 are fixed through the anchorage device, then the second steel pipe 52 is sleeved on the outer side of the connecting steel bars 6, and the second steel pipe 52 is installed on the end face, close to the steel box girder 10, of the anchorage device body 8;
installing the support 20 on the pier, and then constructing the steel box girder 10;
when the steel box girder 10 is constructed, a hole is formed in a bottom plate of the steel box girder 10, a first steel pipe 51 is installed on the hole, and the first steel pipe 51 and the hole are coaxially arranged, so that the connecting steel bar 6 can penetrate through the bottom plate and enter the steel box girder 10;
binding a reinforcing mesh 3 in the steel box girder 10, pouring the counterweight concrete 4, and installing a steel plate 2 and a nut 1 on the top surface of the counterweight concrete 4; the connecting steel bar 6 sequentially penetrates through the counterweight concrete 4 and the steel plate 2 and is connected with the nut 1.
Preferably, the connecting steel bars 6 are spiral steel bars, and the nuts 1 are JLM nuts; in the actual use process, the height of the counterweight concrete 4 is not less than 20cm, and an operation space is reserved in the box for anchoring;
preferably, the connecting steel bars are two groups and are symmetrically arranged along the supporting center line of the transverse bridge direction; the steel plate can adopt one plate for connecting two connecting steel bars.
The utility model discloses in, nut 1 and connecting reinforcement 6 are for dismantling, take off nut 1 when changing support 20, and the jacking roof beam body does not influence support 20 and changes.
The utility model discloses can be effectual link together pier and steel box girder 10, effectual improvement curve steel box girder 10 antidumping, it sets up in support 20 inboardly, does not influence the whole outward appearance of bridge, can dismantle, does not influence support 20 and changes, has certain vertical activity space, can effectively release temperature power.
The above is only the preferred embodiment of the present invention, not to the limitation of the present invention in any form, all the technical matters of the present invention all fall into the protection scope of the present invention to any simple modification and equivalent change of the above embodiments.
Claims (7)
1. An anti-overturning structure of a steel box girder is used for connecting the steel box girder with an abutment; the method is characterized in that: the method comprises the following steps of pouring concrete in a steel box girder and connecting steel bars pre-buried in a pier; the other end of the connecting steel bar sequentially penetrates through the steel box girder and the concrete and is fixedly connected with the concrete; an anchorage device connected with the connecting steel bar is embedded in the pier; the anchorage device comprises an anchorage device body and a spiral rib which is arranged on one side of the anchorage device body close to the steel box girder and sleeved on the outer side of the connecting steel bar.
2. The anti-overturning structure of the steel box girder according to claim 1, wherein: the device also comprises a support arranged between the steel box girder and the abutment.
3. The anti-overturning structure of the steel box girder according to claim 1, wherein: the anchorage device is also provided with a first steel pipe; the steel pipe suit connects the outside of reinforcing bar, and is located between spiral muscle and the connecting reinforcement.
4. The anti-overturning structure of the steel box girder according to claim 1, wherein: the top surface of concrete is provided with and is used for the fixed connection reinforcing bar to keep away from one section fixing device of pier.
5. The anti-overturning structure of the steel box girder according to claim 4, wherein: the fixing device comprises a steel plate arranged on the top surface of the concrete, and a nut arranged on the steel plate and sleeved on the outer side of the connecting steel bar.
6. The anti-overturning structure of the steel box girder according to claim 5, wherein: a second steel pipe is arranged in the concrete, and the second steel pipe is sleeved outside the connecting steel bar; and one end of the second steel pipe close to the pier is coplanar with the bottom of the steel box girder.
7. The anti-overturning structure of the steel box girder according to claim 6, wherein: and a reinforcing mesh is arranged in the concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123079379.4U CN216739199U (en) | 2021-12-09 | 2021-12-09 | Anti-overturning structure of steel box girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123079379.4U CN216739199U (en) | 2021-12-09 | 2021-12-09 | Anti-overturning structure of steel box girder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216739199U true CN216739199U (en) | 2022-06-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123079379.4U Active CN216739199U (en) | 2021-12-09 | 2021-12-09 | Anti-overturning structure of steel box girder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216739199U (en) |
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2021
- 2021-12-09 CN CN202123079379.4U patent/CN216739199U/en active Active
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