CN110965456A - Synchronous limiting and beam falling preventing device based on energy dissipation type structure - Google Patents
Synchronous limiting and beam falling preventing device based on energy dissipation type structure Download PDFInfo
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- CN110965456A CN110965456A CN201911322448.4A CN201911322448A CN110965456A CN 110965456 A CN110965456 A CN 110965456A CN 201911322448 A CN201911322448 A CN 201911322448A CN 110965456 A CN110965456 A CN 110965456A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
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Abstract
The invention relates to the technical field of bridges, and particularly discloses a synchronous limiting anti-falling beam device based on an energy-consuming structure, which comprises a first anti-falling beam structure and a second anti-falling beam structure; the first anti-falling beam structure comprises two first embedded bases, four energy dissipation pieces and a limiter, wherein connecting seats are fixedly arranged on the first embedded bases; the energy dissipation sheets are S-shaped plate-shaped, two ends of each energy dissipation sheet are fixedly connected with the two connecting seats respectively, and the included angle between the upper adjacent energy dissipation sheet and the lower adjacent energy dissipation sheet is 90-150 degrees; the limiting device comprises two limiting seats, two limiting plugs and a limiting rod, a first sliding hole and a second sliding hole are arranged in each limiting seat, one end of the second sliding hole is communicated with the first sliding hole, the other end of the second sliding hole penetrates through each limiting seat, the inner diameter of the second sliding hole is smaller than that of the first sliding hole, each limiting plug is arranged in the corresponding first sliding hole in a sliding mode, and two ends of each limiting rod are respectively inserted into the two second sliding holes and fixedly connected with the two limiting plugs. The invention aims to solve the problem of simultaneous energy consumption and limiting.
Description
Technical Field
The invention relates to the technical field of bridges, and particularly discloses a synchronous limiting and beam falling preventing device based on an energy-consuming structure.
Background
The beam falling damage refers to the separation, falling and damage of the upper structure of the bridge from the lower structure, which causes the damage of the bridge, personal casualties and property loss, and is one of the most common forms of the bridge earthquake damage. The reasons for the damage of the falling beam are very complex, and mainly include that the lap joint length of the upper part and the lower part of the bridge is too short, the expansion joint of the upper part structure of the bridge is too large, and the like.
The anti-falling beam research in China is just started, and the existing anti-falling beam device is generally of a stay cable type, a damper energy-consuming type or a single rigid connection type. The stay cable type and the single rigid connection type are both used for fixedly connecting the beam-pier or the beam-beam, and play a role in limiting when the relative displacement between the beam-pier or the beam-beam exceeds the range, so as to prevent the beam from falling off by avoiding the continuous relative displacement between the beam-pier or the beam-beam. The damper can consume energy and resist earthquake, and avoids displacement of beam-pier or beam-beam. But it is difficult to be widely applied because of the easy occurrence of oil leakage and the high price thereof.
Disclosure of Invention
The invention aims to provide a synchronous limiting and beam falling preventing device based on an energy-consuming structure so as to solve the problem of simultaneous energy consumption and limiting.
In order to achieve the purpose, the basic scheme of the invention is as follows:
the synchronous limiting anti-falling beam device based on the energy-consuming structure comprises a first anti-falling beam structure arranged on a first main beam and a second main beam, and further comprises a second anti-falling beam structure arranged on the first main beam and a capping beam, and the second main beam and the capping beam; the first anti-falling beam structure comprises two first embedded bases, four energy dissipation pieces and a limiter, the two first embedded bases are respectively arranged on a first main beam and a second main beam, and a connecting seat is fixedly arranged on each first embedded base; the energy dissipation sheets are S-shaped plate-shaped, two ends of each energy dissipation sheet are fixedly connected with the two connecting seats respectively through high-strength screws, and the included angle between the upper adjacent energy dissipation sheet and the lower adjacent energy dissipation sheet is 90-150 degrees; the stopper comprises two limiting seats, two limiting plugs and a limiting rod, wherein the limiting seats are integrally formed at the center of the connecting seat, a first sliding hole and a second sliding hole are formed in the limiting seats, one end of the second sliding hole is communicated with the first sliding hole, the other end of the second sliding hole penetrates through the limiting seats, the inner diameter of the second sliding hole is smaller than that of the first sliding hole, the limiting plugs are arranged in the first sliding hole in a sliding mode, and the two ends of the limiting rod are respectively inserted into the two second sliding holes and fixedly connected with the two limiting plugs.
Optionally, the first pre-buried seat is hollow, the first pre-buried seat is provided with a side wall opening parallel to the first main beam and the second main beam, a side wall groove for the limiting seat to pass through is formed in the side wall, corresponding to the limiting seat, of the first pre-buried seat, and the connecting seat is embedded into the first pre-buried seat and fixedly connected with the first pre-buried seat through a high-strength bolt.
Optionally, a first elastic element is arranged on one side, close to the limiting rod, of the first sliding hole, and the first elastic element is connected with the limiting plug.
Optionally, the energy dissipation fins are made of C67S spring steel plates.
Optionally, the second anti-drop beam structure includes a first fixing seat and a second fixing seat, the first fixing seat is disposed on the first main beam or the second main beam, and the second fixing seat is disposed on the bent cap; the first rotating seat is hinged to the first fixing seat, the plug rod is arranged on the first rotating seat, the second rotating seat is hinged to the second fixing seat, the plug barrel is arranged on the second rotating seat, a plug hole is formed in one end portion, away from the cover beam, of the plug barrel, the plug rod is arranged in the plug hole in a clearance fit mode, the second elastic piece is arranged in the plug hole, and the second elastic piece is connected with the plug rod.
Optionally, the first rotating seat is hinged with a plurality of first buffer rods, the first buffer rods are arranged around the plug rods, the second rotating seat is hinged with a plurality of second buffer rods, the second buffer rods are arranged around the plug rods, and the second buffer rods are hinged with the adjacent first buffer rods.
Optionally, a plurality of clamping grooves are formed in the plug cylinder along the circumferential direction, and a plurality of clamping blocks matched with the clamping grooves are arranged on the first buffer rod and the second buffer rod.
The working principle and the beneficial effects of the scheme are as follows:
1. when first girder and second girder take place the displacement, not only first girder and second girder relative displacement between, also can relative displacement between first girder and bent cap, second girder and the bent cap, so prevent falling the roof beam structure and must set up on first girder and second girder, first girder and bent cap, second girder and bent cap, just so can prevent first girder and second girder from droing effectively.
2. The energy dissipation piece and the stopper are arranged in the first beam falling prevention structure, the energy dissipation piece is S-shaped, two ends of the energy dissipation piece are connected with the two connecting seats respectively, when the first main beam and the second main beam are affected by vibration, the energy dissipation piece can absorb the energy of the vibration, the S-shaped structure is centrosymmetric, the middle of the energy dissipation piece is evenly stressed stably, and the energy dissipation piece is not prone to damage and has a good energy dissipation effect. The stopper can further avoid first girder and the outside relative displacement of second girder, also can avoid both clashes simultaneously. Be equipped with spacing stopper and first slide opening in the stopper, the distance that spacing stopper removed in first slide opening is limited, and when first girder and second girder displacement in opposite directions or relative displacement to the biggest safe distance, spacing stopper offsets and can't remove with the inner wall of first slide opening, and the stopper just can prevent that first girder and second girder from continuing the displacement this moment.
3. The energy dissipation piece adopts S-shaped structure, and when first girder and second girder take place the clash, the both ends of energy dissipation piece inwards move and offset rather than the middle part, and then lead to the energy dissipation piece can't compress again, also can prevent further that first girder and second girder from continuing to move.
4. The second in this scheme prevents that roof beam structure falls is used for preventing the relative displacement between first girder, second girder and the bent cap. Because first girder, second girder and bent cap are between 90, so the second prevents falling roof beam structure slope setting and can be easier. The first buffer rod, the second buffer rod, the plug cylinder and the plug rod are arranged in the second anti-falling beam structure, the first buffer rod and the second buffer rod are hinged to form an included angle, when the first main beam and the second main beam are vibrated, the first buffer rod and the second buffer rod overcome the friction force between the first buffer rod and the second buffer rod under the vibration effect to further rotate relatively, and the absorption capacity can be realized in the process; simultaneously, when first girder and second girder removed the biggest safe distance, first buffer beam and second buffer beam were flare-outed gradually, and the fixture block card is gone into to fill in the draw-in groove of a section of thick bamboo, and first buffer beam and second buffer beam are fixed with a stopper section of thick bamboo this moment, and the stopper rod can't continue to remove again, avoids falling the roof beam.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment;
FIG. 2 is an enlarged view taken at A in FIG. 1;
FIG. 3 is a longitudinal cross-sectional view of the spacing block and the spacing rod;
FIG. 4 is a schematic structural view of the embodiment in a bottom view;
FIG. 5 is an enlarged view at B in FIG. 4;
fig. 6 is a longitudinal sectional view of the stopper rod and the stopper barrel in partial structure.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the anti-falling device comprises a first main beam 1, a second main beam 2, a cover beam 3, a first anti-falling beam structure 4, a first pre-embedded seat 5, a connecting seat 6, an energy consumption piece 7, a limiting seat 8, a first sliding hole 9, a limiting plug 10, a limiting rod 11, a first elastic piece 12, a second anti-falling beam structure 13, a first fixed seat 14, a second fixed seat 15, a first rotating seat 16, a second rotating seat 17, a plug rod 18, a plug cylinder 19, a first buffer rod 20, a second buffer rod 21, a clamping groove 22, a clamping block 23, a second elastic piece 24 and a plug hole 25.
Example one
This embodiment is substantially as shown in fig. 1:
synchronous spacing roof beam device of preventing falling based on power consumption formula structure, including setting up the first roof beam structure 4 of preventing falling on first girder 1 and second girder 2, including setting up the second roof beam structure 13 of preventing falling on first girder 1 and bent cap 3, second girder 2 and bent cap 3.
With reference to fig. 2 and 3, the first anti-drop beam structure 4 includes two first pre-buried bases, four energy dissipation pieces 7 and a stopper. Two first pre-buried bases set up respectively on first girder 1 and second girder 2. The first embedded seat 5 is hollow, the first embedded seat 5 is provided with a side wall opening parallel to the first main beam 1 and the second main beam 2, and the first embedded seat 5 is provided with a side wall groove on the side wall facing the joint of the first main beam 1 and the second main beam 2. Be equipped with connecting seat 6 in the first pre-buried seat 5, connecting seat 6 is embedded into first pre-buried seat 5 and uses high strength bolt fixed connection. Energy dissipation piece 7 adopts C67S spring steel plate to make, and energy dissipation piece 7 is the platelike of S-shaped, and the both ends of energy dissipation piece 7 adopt high strength screw rod fixed connection with two connecting seats 6 respectively, and the contained angle between two upper and lower adjacent energy dissipation pieces 7 is 120. The stopper includes two spacing seats 8, two spacing stopper 10 and a gag lever post 11, spacing seat 8 integrated into one piece is in the center department of connecting seat 6, spacing seat 8 can pass the lateral wall groove, be equipped with first slide opening 9 and second slide opening in the spacing seat 8, the one end and the first slide opening 9 UNICOM of second slide opening, the other end of second slide opening runs through spacing seat 8, the internal diameter of second slide opening is less than first slide opening 9, spacing stopper 10 slides and sets up in first slide opening 9, two second slide openings are inserted respectively and with two spacing stopper 10 fixed connection at the both ends of gag lever post 11. A first elastic part 12 is fixedly arranged at one end of the first sliding hole 9 close to the limiting rod 11, the first elastic part 12 is fixedly connected with the limiting plug 10, and the first elastic part 12 is a spring.
With reference to fig. 4, 5 and 6, the second anti-falling beam structure 13 includes a first fixing seat 14 and a second fixing seat 15, the first fixing seat 14 is fixed on the first main beam 1 or the second main beam 2 by a high-strength bolt, and the second fixing seat 15 is fixed on the bent cap 3 by a high-strength bolt. Articulated on the first fixing base 14 have first rotation seat 16, the fixed stopper rod 18 that is equipped with on the first rotation seat 16, articulated on the second fixing base 15 have the second to rotate seat 17, the fixed stopper section of thick bamboo 19 that is equipped with on the second rotates seat 17, the stopper section of thick bamboo 19 is kept away from and is equipped with consent 25 on the tip of bent cap 3, stopper rod 18 clearance fit sets up in consent 25, the consent 25 internal fixation is equipped with second elastic component 24, second elastic component 24 and stopper rod 18 fixed connection, second elastic component 24 is the spring. A plurality of first buffer rods 20 are hinged on the first rotating seat 16, the first buffer rods 20 are arranged around the plug rod 18, and the rotating direction of the first buffer rods 20 is along the radial direction of the plug rod 18; the second rotating seat 17 is hinged with a plurality of second buffer rods 21, the second buffer rods 21 are arranged around the plug rod 18, the rotating direction of the second buffer rods 21 is along the radial direction of the plug rod 18, and the second buffer rods 21 are hinged with the adjacent first buffer rods 20. The plug cylinder 19 is circumferentially provided with a plurality of clamping grooves 22, the clamping grooves 22 are positioned below the plug hole 25, and the first buffer rod 20 and the second buffer rod 21 are fixedly provided with a plurality of clamping blocks 23 matched with the clamping grooves 22.
The specific implementation process is as follows:
when the first main beam 1 and the second main beam 2 are affected by vibration, the energy dissipation sheet 7 can absorb the energy of the vibration, and the first buffer rod 20 and the second buffer rod 21 can rotate relatively and absorb the energy. When the first main beam 1 and the second main beam 2 are displaced oppositely or relatively to the maximum safe distance, the limit plug 10 is abutted against the inner wall of the first slide hole 9 and cannot move, and at the moment, the limit stopper can prevent the first main beam 1 and the second main beam 2 from continuously displacing; meanwhile, the first buffer rod 20 and the second buffer rod 21 are gradually straightened, the clamping block 23 is clamped into the clamping groove 22 of the plug cylinder 19, at the moment, the first buffer rod 20 and the second buffer rod 21 are fixed with the plug cylinder 19, the plug rod 18 cannot move continuously, and the beam falling is avoided.
The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the present invention.
Claims (7)
1. Synchronous spacing roof beam device of preventing falling based on power consumption formula structure, its characterized in that: the first anti-falling beam structure is arranged on the first main beam and the second main beam, and the second anti-falling beam structure is arranged on the first main beam and the cover beam, the second main beam and the cover beam; the first anti-falling beam structure comprises two first embedded bases, four energy dissipation pieces and a limiter, the two first embedded bases are respectively arranged on a first main beam and a second main beam, and a connecting seat is fixedly arranged on each first embedded base; the energy dissipation sheets are S-shaped plate-shaped, two ends of each energy dissipation sheet are fixedly connected with the two connecting seats respectively through high-strength screws, and the included angle between the upper adjacent energy dissipation sheet and the lower adjacent energy dissipation sheet is 90-150 degrees; the stopper comprises two limiting seats, two limiting plugs and a limiting rod, wherein the limiting seats are integrally formed at the center of the connecting seat, a first sliding hole and a second sliding hole are formed in the limiting seats, one end of the second sliding hole is communicated with the first sliding hole, the other end of the second sliding hole penetrates through the limiting seats, the inner diameter of the second sliding hole is smaller than that of the first sliding hole, the limiting plugs are arranged in the first sliding hole in a sliding mode, and the two ends of the limiting rod are respectively inserted into the two second sliding holes and fixedly connected with the two limiting plugs.
2. The synchronous limiting beam-falling prevention device based on the energy-consuming structure as claimed in claim 1, wherein: the first pre-buried seat is hollow inside, the first pre-buried seat is provided with a side wall opening parallel to the first main beam and the second main beam, a side wall groove for the limiting seat to pass through is formed in the side wall, corresponding to the limiting seat, of the first pre-buried seat, and the connecting seat is embedded into the first pre-buried seat and fixedly connected with the first pre-buried seat through a high-strength bolt.
3. The synchronous limiting beam-falling prevention device based on the energy-consuming structure as claimed in claim 2, wherein: one side of the first sliding hole, which is close to the limiting rod, is provided with a first elastic part, and the first elastic part is connected with the limiting plug.
4. The synchronous limiting beam-falling prevention device based on the energy-consuming structure as claimed in claim 3, wherein: the energy dissipation piece is made of a C67S spring steel plate.
5. The synchronous limiting beam-falling prevention device based on the energy-consuming structure as claimed in claim 4, wherein: the second anti-falling beam structure comprises a first fixed seat and a second fixed seat, the first fixed seat is arranged on the first main beam or the second main beam, and the second fixed seat is arranged on the bent cap; the first rotating seat is hinged to the first fixing seat, the plug rod is arranged on the first rotating seat, the second rotating seat is hinged to the second fixing seat, the plug barrel is arranged on the second rotating seat, a plug hole is formed in one end portion, away from the cover beam, of the plug barrel, the plug rod is arranged in the plug hole in a clearance fit mode, the second elastic piece is arranged in the plug hole, and the second elastic piece is connected with the plug rod.
6. The synchronous limiting beam-falling prevention device based on the energy-consuming structure as claimed in claim 5, wherein: articulated on the first seat of rotating have a plurality of first buffer poles, first buffer pole encircles the gag lever post setting, and it has a plurality of second buffer poles to articulate on the second rotates the seat, and the gag lever post is encircleed to the second buffer pole and sets up, and the second buffer pole is articulated rather than adjacent first buffer pole.
7. The synchronous limiting beam-falling prevention device based on the energy-consuming structure as claimed in claim 5, wherein: the stopper barrel is provided with a plurality of clamping grooves along the circumferential direction, and the first buffer rod and the second buffer rod are provided with a plurality of clamping blocks matched with the clamping grooves.
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| CN201911322448.4A CN110965456B (en) | 2019-12-20 | 2019-12-20 | Synchronous limiting and beam falling preventing device based on energy dissipation type structure |
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| CN111501530A (en) * | 2020-05-20 | 2020-08-07 | 中国地震局工程力学研究所 | Vibration-damping locking type device for preventing box girder from falling |
| CN112227184A (en) * | 2020-11-20 | 2021-01-15 | 温州顺启建筑有限公司 | Anti-falling beam shock isolation device convenient for seismic resistance of bridge |
| CN112342901A (en) * | 2020-11-05 | 2021-02-09 | 贵州路桥集团有限公司 | Elevated steel-concrete composite beam with high bearing capacity |
| CN112482196A (en) * | 2020-12-03 | 2021-03-12 | 中国地震局工程力学研究所 | Self-reaction type anti-falling beam structure |
| CN112502021A (en) * | 2020-11-05 | 2021-03-16 | 贵州路桥集团有限公司 | Elevated steel-concrete composite beam with steel bar reinforced structure |
| CN113136790A (en) * | 2021-05-06 | 2021-07-20 | 中国地震局工程力学研究所 | Three-section type box girder anti-falling device |
| CN113152258A (en) * | 2021-05-08 | 2021-07-23 | 北京工业大学 | Metal energy-consumption type bridge falling-preventing device and installation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111501530A (en) * | 2020-05-20 | 2020-08-07 | 中国地震局工程力学研究所 | Vibration-damping locking type device for preventing box girder from falling |
| CN112342901A (en) * | 2020-11-05 | 2021-02-09 | 贵州路桥集团有限公司 | Elevated steel-concrete composite beam with high bearing capacity |
| CN112502021A (en) * | 2020-11-05 | 2021-03-16 | 贵州路桥集团有限公司 | Elevated steel-concrete composite beam with steel bar reinforced structure |
| CN112227184A (en) * | 2020-11-20 | 2021-01-15 | 温州顺启建筑有限公司 | Anti-falling beam shock isolation device convenient for seismic resistance of bridge |
| CN112482196A (en) * | 2020-12-03 | 2021-03-12 | 中国地震局工程力学研究所 | Self-reaction type anti-falling beam structure |
| CN113136790A (en) * | 2021-05-06 | 2021-07-20 | 中国地震局工程力学研究所 | Three-section type box girder anti-falling device |
| CN113136790B (en) * | 2021-05-06 | 2022-07-19 | 中国地震局工程力学研究所 | Three-section type box girder anti-falling device |
| CN113152258A (en) * | 2021-05-08 | 2021-07-23 | 北京工业大学 | Metal energy-consumption type bridge falling-preventing device and installation method thereof |
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| CN110965456B (en) | 2021-06-25 |
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