CN223088257U - Device to prevent overturning of steel box beam of curved lane - Google Patents
Device to prevent overturning of steel box beam of curved lane Download PDFInfo
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- CN223088257U CN223088257U CN202422375402.1U CN202422375402U CN223088257U CN 223088257 U CN223088257 U CN 223088257U CN 202422375402 U CN202422375402 U CN 202422375402U CN 223088257 U CN223088257 U CN 223088257U
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- box girder
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- overturning
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Abstract
The utility model provides an arc-shaped lane steel box girder overturning prevention device, which belongs to the technical field of lane steel box girder overturning prevention and comprises a plurality of arc-shaped box girders, wherein the arc directions of the arc-shaped box girders are the same, and a gravity center balancing device is arranged between the end parts of two adjacent arc-shaped box girders. According to the utility model, the gravity center balancing devices are arranged at the end parts of two or more arc-shaped box girders, so that the gravity center balancing devices can be used for integrally connecting all the end parts of the arc-shaped box girders, the center of the arc-shaped box girders is often shifted to the middle position of a lane, the arc-shaped box girders on the lane cannot be overturned, and meanwhile, the gravity center balancing devices are horizontally arranged at the outer ends, so that the maintenance is very simple at ordinary times.
Description
Technical Field
The utility model relates to the technical field of overturning prevention of lane steel box girders, in particular to an arc lane steel box girder overturning prevention device.
Background
The steel box girder has good bending resistance, reliable torsion resistance and larger spanning capacity, is widely applied to urban bridge designs with limited land, but has lighter dead weight and is unfavorable for transverse anti-overturning of the structure. Particularly, the device is mounted in the hoisting process, and the overturning condition is easy to occur.
The Chinese patent with the publication number of CN213653170U discloses an anti-overturning structure suitable for a small-radius curve steel box girder, which comprises an abutment body and the small-radius curve steel box girder, wherein two groups of double supports are fixed on two sides of the top surface of the abutment body, each group of double supports are respectively arranged on two sides of the axial lead of the bottom surface of the small-radius curve steel box girder, two rows of anti-overturning pull rods are pre-embedded and poured on two sides of each support by the abutment body, the top parts of the anti-overturning pull rods penetrate through a bottom surface hole seat and a base plate of the small-radius curve steel box girder, the base plate is tightly pressed with the top surface of the bottom surface hole seat, and a compression nut is screwed on the top surface of the base plate. The device is that the later stage is fixed to be placed the case roof beam and is overturned, but when the hoist and mount, because the center of arc case roof beam is not on the connecting line of two fulcrums, the condition of overturning appears easily. Meanwhile, after the hoisting is finished, the existing structure is used for fixing the steel box girders at the positions of the piers, the structure only has the fixing effect, but the gravity center of the steel box girders is at the suspended position of the side, the connecting line of the piers cannot be supported any more, and the later stage is easy to cause the overturning condition. Therefore, it is necessary to design an arc-shaped lane steel box girder overturning preventing device for changing the gravity center of the steel box girder.
Disclosure of utility model
The utility model aims to provide a device for preventing an arc lane steel box girder from overturning, which solves the existing technical problems.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
The device for preventing the arc lane steel box girders from overturning comprises a plurality of arc box girders, wherein the arc directions of the arc box girders are the same, and a gravity center balancing device is arranged between the end parts of two adjacent arc box girders.
Further, the gravity center balancing device comprises two box girder end side plates and a cross beam, wherein the two box girder end side plates are respectively arranged on the adjacent sides of the two adjacent arc-shaped box girders, and the cross beam and the two box girder end side plates are detachably arranged.
Further, the method comprises the steps of, box girder end side plate and arc-shaped box the end sides of the beams are integrally arranged.
Further, box girder end side plate bolt holes are formed in the box girder end side plate, a first end bolt hole and a second end bolt hole are formed in two ends of the cross beam respectively, and the first end bolt hole and the second end bolt hole are fixedly connected with the box girder end side plate bolt holes through set bolts.
Further, the middle bottoms of the arc-shaped box girders are provided with middle connection square steels, and the middle connection square steels fix the arc-shaped box girders into a whole.
Further, the gravity center balancing device further comprises a stand column, when the first arc-shaped box girder is installed, one end of the gravity center balancing device is arranged on the first arc-shaped box girder, the upper end of the stand column is connected with the bottom of the other end of the gravity center balancing device, and the bottom of the stand column is arranged on the bridge pier.
Due to the adoption of the technical scheme, the utility model has the following beneficial effects:
According to the utility model, the gravity center balancing devices are arranged at the end parts of two or more arc-shaped box girders, so that the gravity center balancing devices can be used for integrally connecting all the end parts of the arc-shaped box girders, the center of the arc-shaped box girders is often shifted to the middle position of a lane, the arc-shaped box girders on the lane cannot be overturned, and meanwhile, the gravity center balancing devices are horizontally arranged at the outer ends, so that the maintenance is very simple at ordinary times.
Drawings
FIG. 1 is a schematic view of the end structure of the present utility model when a single box girder is hoisted;
FIG. 2 is a schematic view of the connection structure of two box girders according to the present utility model;
FIG. 3 is a schematic end view of two box girder connection structures according to the present utility model;
FIG. 4 is a schematic end view of three box girder connection structures according to the present utility model;
Fig. 5 is a schematic end structure view of four box girder connection structures according to the present utility model.
In the drawing, a bridge pier 1-, a support flange 2-, an arc-shaped box girder 3-, a box girder end side plate 4-, a box girder end side plate bolt hole 5-, a cross beam 6-, a cross beam 7-first end bolt hole, a cross beam 8-second end bolt hole, a stand column 9-and a middle connecting square steel 10-are arranged.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be further described in detail below by referring to the accompanying drawings and by illustrating preferred embodiments. It should be noted, however, that many of the details set forth in the description are merely provided to provide a thorough understanding of one or more aspects of the utility model, and that these aspects of the utility model may be practiced without these specific details.
As shown in fig. 1-5, the device for preventing the steel box girders of the arc lane from overturning comprises a plurality of arc box girders 3, wherein the arc directions of the arc box girders 3 are the same, and a gravity center balancing device is arranged between the end parts of two adjacent arc box girders 3.
During installation, the connecting line of the two support flanges 2 is not in the same straight line with the gravity center position of the arc-shaped box girder, the deviation is larger, if the arc-shaped box girder 3 is not fixed during installation, the arc-shaped box girder 3 is likely to turn over, but the cross beam 6 is fixed, so that the stressed center coincides with the gravity center position of the arc-shaped box girder, and balance is maintained. As shown in fig. 2, by connecting the middle positions of the two arc-shaped box girders 3 together, the center of gravity of the outwardly arc-shaped box girders is moved backward, and the front one is moved backward, so that the center is at the middle position of the four support piers, and the arc-shaped box girders 3 do not topple.
In the embodiment of the utility model, the gravity center balancing device comprises two box girder end side plates 4 and a cross beam 6, wherein the two box girder end side plates 4 are respectively arranged on the adjacent sides of the two adjacent arc-shaped box girders 3, and the cross beam 6 and the two box girder end side plates 4 are detachably arranged. The box girder end side plates 4 are connected with the cross beams 6, so that the connection in hoisting is more convenient, the efficiency is higher, and meanwhile, overturning can not occur during single hoisting.
In the embodiment of the utility model, the box girder end side plate 4 is integrally arranged with the end side edge of the arc-shaped box girder 3. Through integrative setting for it is more firm, as long as install once the bolt can, sturdy and durable more.
In the embodiment of the utility model, a box girder end side plate 5 is arranged on a box girder end side plate 4, two ends of a cross beam 6 are respectively provided with a cross beam first end bolt hole 7 and a cross beam second end bolt hole 8, and the cross beam first end bolt hole 7 and the cross beam second end bolt hole 8 are respectively fixedly connected with the box girder end side plate 5 through set bolts in a threaded manner. The bolts are fixed by arranging nuts when being connected, and meanwhile, corresponding nuts are arranged according to the acceptance of the box girder.
In the embodiment of the utility model, the middle bottoms of the arc-shaped box girders 3 are provided with middle connection square steels 10, and the middle connection square steels 10 fix the arc-shaped box girders 3 into a whole. Through setting up intermediate connection square steel 10 for all arc case girders 3 can become a whole, avoid appearing the condition of removal, and the acceptance effect is better.
In the embodiment of the utility model, the gravity center balancing device further comprises a stand column 9, when the first arc-shaped box girder 3 is installed, one end of the gravity center balancing device is arranged on the first arc-shaped box girder 3, the upper end of the stand column 9 is connected with the bottom of the other end of the gravity center balancing device, and the bottom of the stand column 9 is arranged on the bridge pier 1. The upright post 9 is mainly arranged for facilitating the installation of the first box girder, is not needed in the later period, and can be directly dismantled after being installed.
The end position of the arc-shaped box girder is provided with a gravity center balancing device, and the gravity center position of the arc-shaped box girder is changed, so that all the end parts of the arc-shaped box girder can be connected into a whole by the gravity center balancing device, the center of the arc-shaped box girder is often shifted to the middle position of a lane, and the arc-shaped box girder on the lane cannot be overturned.
The foregoing is merely a preferred embodiment of the present utility model and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present utility model, which are intended to be comprehended within the scope of the present utility model.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422375402.1U CN223088257U (en) | 2024-09-27 | 2024-09-27 | Device to prevent overturning of steel box beam of curved lane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422375402.1U CN223088257U (en) | 2024-09-27 | 2024-09-27 | Device to prevent overturning of steel box beam of curved lane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223088257U true CN223088257U (en) | 2025-07-11 |
Family
ID=96285496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202422375402.1U Active CN223088257U (en) | 2024-09-27 | 2024-09-27 | Device to prevent overturning of steel box beam of curved lane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN223088257U (en) |
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2024
- 2024-09-27 CN CN202422375402.1U patent/CN223088257U/en active Active
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