CN213448051U - Spacing formula beam device of preventing falling - Google Patents
Spacing formula beam device of preventing falling Download PDFInfo
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- CN213448051U CN213448051U CN202021656188.2U CN202021656188U CN213448051U CN 213448051 U CN213448051 U CN 213448051U CN 202021656188 U CN202021656188 U CN 202021656188U CN 213448051 U CN213448051 U CN 213448051U
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Abstract
The utility model discloses a roof beam device that falls is prevented to spacing formula belongs to bridge antidetonation technical field, has solved how when the earthquake takes place, prevents the problem that the bridge collapses. The utility model comprises a first embedded part, a second embedded part and a pull rod; the first embedded part comprises an embedded steel plate in the bent cap, embedded steel bars in the bent cap and a first connecting steel plate, and the embedded steel bars in the bent cap and the first connecting steel plate are respectively connected to two surfaces of the embedded steel plate in the bent cap; the second embedded part comprises an embedded steel plate in the box girder, embedded steel bars in the box girder and a second connecting steel plate, and the embedded steel bars in the box girder and the second connecting steel plate are respectively connected to two surfaces of the embedded steel plate in the box girder; the first connecting steel plate is provided with a long hole, the second connecting steel plate is provided with a round hole, and two ends of the pull rod are respectively connected with the long hole and the round hole through a connecting bolt and a nut. The utility model discloses produce great vertical relative displacement between bridge superstructure and the substructure when can preventing the earthquake to take place, prevent collision and roof beam that falls between the earthquake body when the earthquake comes.
Description
Technical Field
The utility model belongs to the technical field of the bridge antidetonation, concretely relates to roof beam device is prevented falling by spacing formula.
Background
The bridge is used as a junction project on a traffic line, once an earthquake happens to the bridge site position, the bridge is damaged, traffic paralysis and post-disaster reconstruction are difficult to aggravate, and particularly, the urban operation is seriously influenced by modern cultural metropolis. Under the action of strong earthquake, the bridge structure generates larger longitudinal relative displacement between the upper structure and the lower structure, and when the displacement exceeds the length or limit of the actual beam falling prevention of the abutment, the beam falling can occur, which causes traffic interruption and brings great difficulty to disaster relief work. Therefore, how to ensure that the bridge does not fall in the earthquake is the key work of the bridge in earthquake resistance. At present, anti-seismic measures such as anchor bolts, stop blocks, steel brackets and the like are mainly adopted for bridges in China, and secondary beam falling prevention devices for preventing the bridges from falling off in vibration are less arranged. The anti-beam-falling device is an effective anti-seismic system for preventing the collapse of the bridge when an earthquake occurs, is a necessary device for carrying out secondary protection on an important bridge or a high-risk bridge, and can improve the safety of the bridge. At present, the domestic beam falling prevention device also belongs to a preliminary application stage, and has a very wide application prospect along with higher and higher requirements on bridge safety. When an earthquake comes, the bridge pier is ensured not to collapse, and the bridge floor is not dropped, so that the emergency rescue and disaster relief can be greatly facilitated.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a roof beam device is prevented falling by spacing formula to solve how when the earthquake takes place, prevent the problem that the bridge collapses.
The technical scheme of the utility model is that: a limiting type beam falling prevention device comprises a first embedded part, a second embedded part and a pull rod; the first embedded part comprises an inner pre-embedded steel plate of the coping, an inner pre-embedded steel bar of the coping and a first connecting steel plate, the inner pre-embedded steel bar of the coping and the first connecting steel plate are respectively connected to two sides of the inner pre-embedded steel plate of the coping, the inner pre-embedded steel plate of the coping and the inner pre-embedded steel bar of the coping are embedded in the side surface of the coping, and the first connecting steel plate is exposed outside; the second embedded part comprises an embedded steel plate in the box girder, embedded steel bars in the box girder and a second connecting steel plate, the embedded steel bars in the box girder and the second connecting steel plate are respectively connected to two sides of the embedded steel plate in the box girder, the embedded steel plates in the box girder and the embedded steel bars in the box girder are embedded in the bottom surface of the box girder, and the second connecting steel plate is exposed outside; the first connecting steel plate is provided with a long hole, the second connecting steel plate is provided with a round hole, and two ends of the pull rod are respectively connected with the long hole and the round hole through a connecting bolt and a nut.
As a further improvement, the first connecting steel plate is provided with two connecting steel plates which are opposite in position, and the pull rod is connected between the two first connecting steel plates.
As a further improvement of the utility model, a backing plate is arranged between the first connecting steel plate and the pull rod.
As a further improvement, the embedded steel bars and the first connecting steel plate in the bent cap are respectively welded on the embedded steel plate in the bent cap.
As a further improvement, the embedded steel bars in the bent cap adopt the perforation plug welding to weld on the embedded steel plate in the bent cap.
As a further improvement, the second connecting steel plate is provided with two connecting steel plates and has relative position, and the pull rod is connected between the two second connecting steel plates.
As a further improvement of the utility model, a backing plate is arranged between the second connecting steel plate and the pull rod.
As a further improvement, the embedded steel bars and the second connecting steel plates in the box girder are respectively welded on the embedded steel plates in the box girder.
As a further improvement, the embedded steel bars in the box girder are welded on the embedded steel plates in the box girder by adopting a perforation plug welding.
The utility model has the advantages that:
1. the utility model has the advantages that the limiting pull rod is arranged between the box girder and the bent cap, so that the generation of larger longitudinal relative displacement between the upper structure and the lower structure of the bridge when an earthquake occurs can be effectively prevented, and the collision and the beam falling between the beam bodies when the earthquake occurs can be prevented, and the structure has the advantages of simple structure, convenient manufacture and installation, obvious shockproof effect and the like;
2. the long hole on the first connecting steel plate can adapt to the translation and rotation of the pull rod, the round hole on the second connecting steel plate can adapt to the rotation of the pull rod, and the bridge can well adapt to the deformation of a beam body when in normal work;
3. the utility model strengthens the connection between the box girder and the bent cap, and makes up the risk of shearing damage when a high-intensity earthquake comes;
4. utility model installation component is simple and practical, and is convenient for maintain the maintenance.
Drawings
Fig. 1 is a schematic elevation view of the present invention;
FIG. 2 is a cross-sectional view taken along line I-I of FIG. 1;
FIG. 3 is an enlarged view of portion A of FIG. 2;
FIG. 4 is a schematic structural diagram of a first embedded part of the present invention;
FIG. 5 is a right side view of FIG. 4;
FIG. 6 is a schematic structural view of a second embedded part according to the present invention;
FIG. 7 is a bottom view of FIG. 6;
fig. 8 is a schematic structural view of the middle pull rod of the present invention;
fig. 9 is a schematic structural view of the middle cushion plate of the present invention.
In the figure: 1-a first embedded part; 2-a second embedded part; 3-a pull rod; 4-a backing plate; 5-connecting bolts; 6-embedding reinforcing steel bars in the bent cap; 7-embedding a steel plate in the bent cap; 8-a first connecting steel plate; 9-embedding reinforcing steel bars in the box girder; 10, pre-burying a steel plate in the box girder; 11-a second connecting steel plate; 12-long holes; 13-round holes; 14-a capping beam; 15-box girder; 16-a nut; 17-connecting hole.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1-9, a limiting beam-falling prevention device comprises a first embedded part 1, a second embedded part 2 and a pull rod 3; the first embedded part 1 comprises a pre-embedded steel plate 7 in the bent cap, pre-embedded steel bars 6 in the bent cap and a first connecting steel plate 8, the pre-embedded steel bars 6 in the bent cap and the first connecting steel plate 8 are respectively connected to two sides of the pre-embedded steel plate 7 in the bent cap, the pre-embedded steel plates 7 in the bent cap and the pre-embedded steel bars 6 in the bent cap are embedded in the side surface of the pier bent cap 14, and the first connecting steel plate 8 is exposed outside; the second embedded part 2 comprises an embedded steel plate 10 in the box girder, embedded steel bars 9 in the box girder and a second connecting steel plate 11, the embedded steel bars 9 in the box girder and the second connecting steel plate 11 are respectively connected to two sides of the embedded steel plate 10 in the box girder, the embedded steel plates 10 in the box girder and the embedded steel bars 9 in the box girder are embedded in the bottom surface of the box girder 15, and the second connecting steel plate 11 is exposed outside; the first connecting steel plate 8 is provided with a round end-shaped long hole 12, the second connecting steel plate 11 is provided with a round hole 13, and two ends of the pull rod 3 are respectively connected with the long hole 12 and the round hole 13 through the connecting bolt 5 and the nut 16.
The first connecting steel plates 8 are arranged in two opposite positions, and the pull rod 3 is connected between the two first connecting steel plates 8. A shim plate 4 is arranged between the first connecting steel plate 8 and the tie rod 3.
The pre-buried reinforcing bar 6 in the bent cap and the first connecting steel plate 8 are welded on the pre-buried steel plate 7 in the bent cap respectively. And the pre-embedded steel bars 6 in the bent cap are welded on the pre-embedded steel plates 7 in the bent cap by adopting perforation plug welding.
The second connecting steel plates 11 are arranged in two opposite positions, and the pull rod 3 is connected between the two second connecting steel plates 11. A backing plate 4 is arranged between the second connecting steel plate 11 and the pull rod 3.
And the embedded steel bars 9 in the box girder and the second connecting steel plate 11 are respectively welded on the embedded steel plate 10 in the box girder. And the embedded steel bars 9 in the box girder are welded on the embedded steel plates 10 in the box girder by adopting perforation plug welding.
As shown in fig. 9, the backing plate 4 is provided with attachment holes 17, and the backing plate 4 is attached to the corresponding attachment bolts 5 through the attachment holes 17. The distance between the two first connecting steel plates 8 on the first embedded part 1 and the distance between the two second connecting steel plates 11 on the second embedded part 2 are both smaller, the precision requirement is high during welding, but the possibility of generating errors during construction is larger, and the distance can be increased and the errors can be reduced by arranging the backing plates 4. In addition, when the two embedded parts on the box girder 15 and the cover girder 14 are embedded, the precision requirement is high, if the transverse deviation is large, the dislocation is possibly caused, the pull rod 3 is not installed, and a certain space can be left for adjusting by arranging the base plate 4.
Scribble butter between first connecting steel plate 8, pull rod 3 and corresponding backing plate 4, make the three can take place relative displacement, reduce the friction, can reserve 1mm space between the three. Similarly, the second connecting steel plate 11, the tie rod 3 and the corresponding backing plate 4 are coated with grease, and a 1mm gap is reserved among the three. The outer side of the connecting bolt 5 can be spot welded to prevent the bolt from loosening.
The utility model discloses prevent to produce great vertical relative displacement between the upper and lower substructure of bridge when can realizing the earthquake load effect, the roof beam that falls appears, the circumstances such as striking abutment back wall, extrusion roof beam body to reduce the harm of earthquake to the bridge. When the bridge normally works, the telescopic deformation of the main beam can be adapted through the rotation of the upper end of the pull rod 3 in the circular hole 13 and the rotation and translation of the lower end of the pull rod in the long hole 12, when an earthquake occurs, the box girder 15 and the cover girder 14 can be limited to generate large relative displacement, the bridge structure is protected secondarily, the shock resistance of the bridge is improved, the traffic line is smooth when the earthquake disaster occurs, and the utilization value is high.
Claims (9)
1. The utility model provides a roof beam device is prevented falling by spacing formula which characterized in that: the device comprises a first embedded part (1), a second embedded part (2) and a pull rod (3); the first embedded part (1) comprises a cover beam inner embedded steel plate (7), a cover beam inner embedded steel bar (6) and a first connecting steel plate (8), the cover beam inner embedded steel bar (6) and the first connecting steel plate (8) are respectively connected to two sides of the cover beam inner embedded steel plate (7), the cover beam inner embedded steel plate (7) and the cover beam inner embedded steel bar (6) are embedded in the side surface of the pier cover beam (14), and the first connecting steel plate (8) is exposed outside; the second embedded part (2) comprises an embedded steel plate (10) in the box girder, embedded steel bars (9) in the box girder and a second connecting steel plate (11), the embedded steel bars (9) in the box girder and the second connecting steel plate (11) are respectively connected to two sides of the embedded steel plate (10) in the box girder, the embedded steel plate (10) in the box girder and the embedded steel bars (9) in the box girder are embedded in the bottom surface of the box girder (15), and the second connecting steel plate (11) is exposed outside; the first connecting steel plate (8) is provided with a long hole (12), the second connecting steel plate (11) is provided with a round hole (13), and two ends of the pull rod (3) are connected with the long hole (12) and the round hole (13) through a connecting bolt (5) and a nut (16) respectively.
2. The limiting type beam falling prevention device according to claim 1, characterized in that: the two first connecting steel plates (8) are opposite in position, and the pull rod (3) is connected between the two first connecting steel plates (8).
3. The limiting type beam falling prevention device according to claim 2, characterized in that: a backing plate (4) is arranged between the first connecting steel plate (8) and the pull rod (3).
4. The limiting type beam falling prevention device according to claim 3, characterized in that: and the pre-buried steel bars (6) in the bent cap and the first connecting steel plate (8) are respectively welded on the pre-buried steel plate (7) in the bent cap.
5. The limiting type beam falling prevention device according to claim 4, wherein: and the pre-embedded steel bars (6) in the bent cap are welded on the pre-embedded steel plates (7) in the bent cap by adopting perforation plug welding.
6. The limiting type beam falling prevention device according to any one of claims 1 to 5, wherein: the two second connecting steel plates (11) are opposite in position, and the pull rod (3) is connected between the two second connecting steel plates (11).
7. The limiting type beam falling prevention device according to claim 6, wherein: a backing plate (4) is arranged between the second connecting steel plate (11) and the pull rod (3).
8. The limiting type beam falling prevention device according to claim 7, characterized in that: and the embedded steel bars (9) in the box girder and the second connecting steel plate (11) are respectively welded on the embedded steel plate (10) in the box girder.
9. The limiting type beam falling prevention device according to claim 8, wherein: and the embedded steel bars (9) in the box girder are welded on the embedded steel plates (10) in the box girder by adopting perforation plug welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021656188.2U CN213448051U (en) | 2020-08-11 | 2020-08-11 | Spacing formula beam device of preventing falling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021656188.2U CN213448051U (en) | 2020-08-11 | 2020-08-11 | Spacing formula beam device of preventing falling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213448051U true CN213448051U (en) | 2021-06-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021656188.2U Active CN213448051U (en) | 2020-08-11 | 2020-08-11 | Spacing formula beam device of preventing falling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213448051U (en) |
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2020
- 2020-08-11 CN CN202021656188.2U patent/CN213448051U/en active Active
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