CN110485270B - Bridge anti-seismic device provided with hillock type flexible stop blocks - Google Patents
Bridge anti-seismic device provided with hillock type flexible stop blocks Download PDFInfo
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- CN110485270B CN110485270B CN201910868896.8A CN201910868896A CN110485270B CN 110485270 B CN110485270 B CN 110485270B CN 201910868896 A CN201910868896 A CN 201910868896A CN 110485270 B CN110485270 B CN 110485270B
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- stop block
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- steel plate
- flexible
- shaped
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- 229910000831 Steel Inorganic materials 0.000 claims description 45
- 239000010959 steel Substances 0.000 claims description 45
- 239000007788 liquid Substances 0.000 claims description 17
- 238000005452 bending Methods 0.000 claims description 3
- 230000004888 barrier function Effects 0.000 claims 2
- 230000009471 action Effects 0.000 abstract description 8
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 230000007123 defense Effects 0.000 abstract description 4
- 238000006073 displacement reaction Methods 0.000 description 5
- 230000035939 shock Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention discloses a bridge anti-seismic device provided with hilly-shaped flexible stop blocks, which comprises two U-shaped flexible stop blocks with the same structure, wherein the U-shaped flexible stop blocks are respectively arranged at two ends of a bent cap; a U-shaped rigid stop block is arranged in the flexible stop block, and a rigid cover plate is arranged in the rigid stop block and at the upper part of the rigid stop block; a plurality of springs are arranged in the rigid stop block, one end of each spring is connected with the inner wall of the rigid stop block, and the other end of each spring is connected with a rigid cover plate of the rigid stop block; the invention can effectively buffer and resist the earthquake action, reduce beam falling accidents, reasonably integrate a plurality of functions such as limit, buffer energy consumption, reset and the like, has a plurality of defense lines, and is easy to reset after the earthquake.
Description
Technical Field
The invention relates to the technical field of bridge earthquake resistance and shock absorption and isolation, in particular to a bridge earthquake resistance device provided with a hilly flexible stop block.
Background
According to the seismic disaster data of the past year, it is not difficult to find that the bridge structure frequently has the beam falling accident caused by the fact that longitudinal and transverse limiting measures are not in place. The beam falling accident not only brings great difficulty to the post-earthquake maintenance of the bridge structure, but also produces serious interference to the traffic line below the bridge. Along with the continuous penetration of people to earthquake disasters and structural earthquake responses, the structural earthquake resistance and related earthquake reduction and isolation measures are more and more important in the structural design and construction process. The effective shock absorbing and isolating device is a hot spot in the field of shock absorption and isolation in civil engineering.
In order to avoid beam falling accidents, anti-seismic stop blocks or buffer energy consumption limiting devices are often arranged at two ends of the bent cap. The existing bridge limiting device is relatively single in function, multiple beneficial functions cannot be integrated in a beneficial mode, the cost for achieving the multiple functions is high, the layout requirement space is large, the structure is heavy, the components are not easy to replace and maintain after being damaged, and the manufacturing and processing difficulty is high.
Disclosure of Invention
The bridge anti-seismic device provided with the hilly flexible stop blocks, which can effectively buffer and resist the earthquake, reduce beam falling accidents, reasonably integrate multiple functions of limiting, buffering energy consumption, resetting and the like, has multiple defense lines, and resets after the earthquake.
The bridge anti-seismic device with the hillock type flexible stop blocks comprises two U-shaped flexible stop blocks which are respectively arranged at two ends of a bent cap and have the same structure; a U-shaped rigid stop block is arranged in the flexible stop block, and a rigid cover plate is arranged in the rigid stop block and at the upper end of the upper part of the rigid stop block; a plurality of springs are arranged in the rigid stop block, one end of each spring is connected with the inner wall of the rigid stop block, and the other end of each spring is connected with the rigid cover plate of the rigid stop block.
Further, the flexible stop block is of a hollow closed structure, and liquid or gas is filled in the flexible stop block.
Further, the flexible stop block is made of elastic rubber.
Further, rectangular grooves are reserved at corresponding positions of the flexible stop blocks on the bent cap.
Furthermore, two sides of the lower end of the main beam are respectively provided with a vertical steel plate, and a U-shaped steel plate is arranged at the corresponding position of the vertical steel plate on the bent cap; an inclined steel plate is arranged between the vertical steel plate and the U-shaped steel plate.
Furthermore, the contact part between the outer side of the U-shaped rigid stop block and the U-shaped flexible stop block is arc-shaped.
Further, the U-shaped steel plate is formed by respectively bending two ends of a straight steel plate upwards; the included angle between the upward part and the horizontal section part is 120-150 degrees.
Further, the bottom is provided with the filling opening in the flexible dog, and rigid dog and rigid apron correspond the position and are equipped with the through-hole.
The beneficial effects of the invention are as follows:
(1) The invention can effectively buffer and resist earthquake and reduce beam falling accidents, reasonably integrates a plurality of functions such as limit, buffer energy consumption and reset, has a plurality of defense lines, and has simple reset operation after earthquake;
(2) The invention has low manufacturing and processing precision requirements, short construction period, easy replacement and maintenance of parts and lower cost;
(3) Under the normal use load and the action of small and medium earthquakes, the invention mainly relies on the U-shaped flexible stop protruding part at the side of the compressed girder to expand the part near the end of the capping girder and to buffer and dissipate the earthquake energy by friction between contact surfaces of parts; under the strong shock effect, the earthquake energy is buffered and dissipated mainly by the friction between the convex parts of the U-shaped flexible stop blocks at the end of the compression cover beam and the contact surfaces of the parts, so that the displacement of the main beam is limited by multiple fortification, and the beam falling accident is avoided or reduced.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention.
FIG. 2 is a schematic view of a U-shaped flexible stopper according to the present invention.
FIG. 3 is a schematic view of the U-shaped rigid block plane structure of the present invention.
Fig. 4 is a schematic plan view of a U-shaped steel plate according to the present invention.
In the figure: the device comprises a cover beam 1, a main beam 2, a support 3, a vertical steel plate 4, an inclined steel plate 5, a U-shaped steel plate 6, a rigid stop block 7, a flexible stop block 8, a filler 9 and a liquid filling port 10.
Detailed Description
The invention is further described below with reference to the drawings and examples.
As shown in fig. 1, 2, 3 and 4, a support 3 is installed on the capping beam 1, the main beam 2 is arranged on the support 3, and rectangular structural grooves are reserved when the two ends of the capping beam 1 are cast. A U-shaped steel box-shaped rigid stop block 7 formed by welding is arranged on the middle straight section in the U-shaped flexible stop block 8, and a rigid cover plate is arranged in and on the rigid stop block 7. A plurality of springs are arranged in the rigid stop block 7, one ends of the springs are anchored on the inner wall of the rigid stop block 7, and the other ends of the springs are connected with a rigid cover plate.
The flexible stop block 8 is a U-shaped elastic rubber sealed cabin with a liquid filling opening 10, and the internal filler 9 can be liquid or gas with lower compressibility; and reserving rectangular grooves when pouring is performed on the two ends of the bent cap 1, and installing and fixing the flexible stop blocks 8 in the rectangular grooves. Two sides of the lower end of the main beam 2 are provided with a vertical steel plate 4, and a U-shaped steel plate 6 is arranged at a position corresponding to the vertical steel plate 4 on the bent cap 1; an inclined steel plate 5 is arranged between the vertical steel plate 4 and the U-shaped steel plate 6. The U-shaped steel plate 6 is formed by respectively bending up two ends of a straight steel plate with a certain size for 5-10 cm, and the included angle between the bent part and the straight section part is about 120-150 degrees.
Two liquid filling openings 10 are arranged in the middle of the middle straight section in the flexible stop block 8. The rigid stop block 7 and the rigid cover plate are respectively provided with a through hole at the corresponding positions of the liquid filling opening 10. The diameter of the through hole is 2-3 cm larger than that of the liquid adding port 10. The reserved rectangular groove is 1-2 cm longer than the corresponding side of the flexible stop block, and the gap between the rectangular groove and the flexible stop block 8 is filled after the liquid is added into the flexible stop block 8. The edge angle of the contact part between the outer side of the rigid stop block 7 and the flexible stop block 8 is polished into an arc shape, so that the flexible stop block 8 is prevented from being damaged when being contacted and rubbed. The end part of the U-shaped steel plate 6 close to the flexible stop block 8 is cut and polished into an arc shape, so that damage caused by contact and friction between the flexible stop block 8 and the U-shaped steel plate 6 is avoided.
When the flexible stop block is used, the flexible stop block 8 with the liquid filling opening 10 and the spring are customized and processed in advance in a factory according to the design requirement of bridge structure vibration resistance. The rigid stop block 7, the inclined steel plate 5, the U-shaped steel plate 6, the vertical steel plate 4 and the rigid cover plate are cut and processed according to requirements. When the capping beam 1 is concreted, a rectangular groove is reserved at a corresponding position, a flexible stop block 8 formed by a U-shaped elastic rubber sealed cabin is placed in the rectangular groove, and a rigid stop block 7 is installed. The rigid cover plate is then fixed inside the rigid stop 7 by means of springs. Simultaneously, the oblique steel plate 5 is anchored on the embedded vertical steel plate 4 in a welding mode. The end portions of the steel plates are welded with a prefabricated U-shaped steel plate 6. And finally, injecting liquid with smaller compressibility such as water and the like into the flexible stop block 8 through the liquid filling opening 10, and sealing the liquid well, so that the hillock liquid filling type flexible bridge anti-seismic stop block is formed. The gas with lower compressibility can be adopted, and the adopted U-shaped rigid stop 7, U-shaped steel plate 6 and spring can also adopt other structures which can play the same role.
Under the normal load action, the displacement amount generated by the U-shaped steel plate 6 under the drive of the transverse earthquake displacement of the main beam 2 is also smaller, and the U-shaped steel plate 6 is basically not contacted with the flexible stop block 8 and has rolling action.
Under the action of small and medium earthquakes, the transverse earthquake displacement generated by the main beam 2 is increased compared with that generated under the action of normal use load, and at the moment, the U-shaped steel plate 6 rolls the convex part of the flexible stop block 8 close to the main beam 2 side and reduces the volume of the flexible stop block 8. But this causes an increase in the volume of the protruding portion of the U-shaped elastic rubber boot against the end of the cap beam 1. And meanwhile, the rigid cover plate anchored by the compression spring in the rigid stop block 7 gradually moves to the outer side of the rigid stop block 7 to lock the protruding part of the U-shaped elastic rubber sealed cabin close to the main beam 2 side so as to avoid the restoration of the protruding part. This is just like a hill that is moved to the end of the back cover beam 1 by the pushing of the U-shaped steel plate to form a larger hill. The stage mainly relies on friction between the steel plate and rubber outside the sealed cabin, compression and expansion deformation of the protruding part of the U-shaped elastic rubber sealed cabin to buffer earthquake action and dissipate earthquake energy.
Under the strong earthquake action, the transverse earthquake displacement generated by the girder 2 of the bridge structure is larger, and the U-shaped steel plate 6 is driven by the girder 2 to contact or collide with the protruding part of the U-shaped elastic rubber sealed cabin close to the end part side of the capping beam 1, and meanwhile, the protruding part of the U-shaped elastic rubber sealed cabin is rolled to dissipate earthquake energy.
The invention adopts the multiple defense concept, the force transmission path is clear and effective, the consumption materials are less, the manufacturing cost is lower, the earthquake requirements at different bridge sites can be realized through reasonable calculation and analysis and limited experiments, and a better scheme is obtained, so that the functions of buffering energy consumption, transverse limit, self-reset and the like are realized, the occurrence of beam falling accidents is reduced, and the overall shock resistance of the bridge structure is improved. The materials adopted in the manufacturing and processing process of the invention belong to the conventional type, are easy to obtain in engineering construction, the parts are convenient to replace, the liquid replacement and supplement of the closed cabin are easy, the liquid such as water can be adopted for filling, the required cost is relatively low, and the required space is easy to meet when the cover beam is arranged, so that the invention has good market popularization and application prospect.
Claims (6)
1. The bridge anti-seismic device provided with the hillock type flexible stop blocks is characterized by comprising two U-shaped flexible stop blocks (8) which are respectively arranged at two ends of a bent cap (1) and have the same structure; a U-shaped rigid stop block (7) is arranged in the flexible stop block (8), and a rigid cover plate is arranged in and on the rigid stop block (7); a plurality of springs are arranged in the rigid stop block (7), one end of each spring is connected with the inner wall of the rigid stop block (7), and the other end of each spring is connected with a rigid cover plate of the rigid stop block (7); rectangular grooves are reserved at corresponding positions of the flexible stop blocks (8) on the bent cap (1); two sides of the lower end of the main beam (2) are provided with a vertical steel plate (4), and a U-shaped steel plate (6) is arranged at the corresponding position of the vertical steel plate (4) on the bent cap (1); an inclined steel plate (5) is arranged between the vertical steel plate (4) and the U-shaped steel plate (6).
2. Bridge seismic device provided with a flexible barrier of hilly type according to claim 1, characterized in that the flexible barrier (8) is of hollow closed structure, internally filled with liquid or gas.
3. Bridge vibration-proof device provided with a hilly type flexible stopper according to claim 2, characterized in that the flexible stopper (8) is made of elastic rubber.
4. The bridge vibration-resistant device provided with the hillock type flexible stop block according to claim 1, wherein the contact part between the outer side of the U-shaped rigid stop block (7) and the U-shaped flexible stop block (8) is arc-shaped.
5. The bridge earthquake-resistant device with the hillock type flexible stop block according to claim 1, wherein the U-shaped steel plate (6) is formed by respectively bending two ends of a straight steel plate upwards; the included angle between the upward part and the horizontal section part is 120-150 degrees.
6. The bridge vibration-resistant device provided with the hillock type flexible baffle block according to claim 2, wherein the liquid filling opening (10) is arranged at the inner bottom of the flexible baffle block (8), and through holes are formed at the positions corresponding to the rigid baffle block (7) and the rigid cover plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910868896.8A CN110485270B (en) | 2019-09-16 | 2019-09-16 | Bridge anti-seismic device provided with hillock type flexible stop blocks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910868896.8A CN110485270B (en) | 2019-09-16 | 2019-09-16 | Bridge anti-seismic device provided with hillock type flexible stop blocks |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110485270A CN110485270A (en) | 2019-11-22 |
| CN110485270B true CN110485270B (en) | 2024-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910868896.8A Active CN110485270B (en) | 2019-09-16 | 2019-09-16 | Bridge anti-seismic device provided with hillock type flexible stop blocks |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110485270B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09316825A (en) * | 1996-05-30 | 1997-12-09 | Railway Technical Res Inst | Supporting material and its manufacture |
| JPH11269822A (en) * | 1998-03-23 | 1999-10-05 | Yokohama Rubber Co Ltd:The | Falling prevention device for bridge |
| JP2006342494A (en) * | 2005-06-07 | 2006-12-21 | Kawaguchi Metal Industries Co Ltd | Bearing of sealing rubber bearing plate |
| CN203451981U (en) * | 2013-05-07 | 2014-02-26 | 武汉科技大学 | Bridge buffer unit |
| CN205223834U (en) * | 2015-12-19 | 2016-05-11 | 长安大学 | Bridge anti -seismic dog with rubber pad and iron pipe |
| CN105926429A (en) * | 2016-06-24 | 2016-09-07 | 西南交通大学 | Buffer and energy dissipation bridge anti-seismicanti-seismic stop block structure |
| CN206570673U (en) * | 2017-03-02 | 2017-10-20 | 西南交通大学 | A kind of replaceable embedded rebar concrete anti-earthquake baffle block device |
| CN108179809A (en) * | 2018-03-15 | 2018-06-19 | 莆田学院 | The connection method of assembled steel tendon concrete frame structure component |
| CN211200034U (en) * | 2019-09-16 | 2020-08-07 | 莆田学院 | Bridge anti-seismic device provided with hill type flexible stop blocks |
-
2019
- 2019-09-16 CN CN201910868896.8A patent/CN110485270B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09316825A (en) * | 1996-05-30 | 1997-12-09 | Railway Technical Res Inst | Supporting material and its manufacture |
| JPH11269822A (en) * | 1998-03-23 | 1999-10-05 | Yokohama Rubber Co Ltd:The | Falling prevention device for bridge |
| JP2006342494A (en) * | 2005-06-07 | 2006-12-21 | Kawaguchi Metal Industries Co Ltd | Bearing of sealing rubber bearing plate |
| CN203451981U (en) * | 2013-05-07 | 2014-02-26 | 武汉科技大学 | Bridge buffer unit |
| CN205223834U (en) * | 2015-12-19 | 2016-05-11 | 长安大学 | Bridge anti -seismic dog with rubber pad and iron pipe |
| CN105926429A (en) * | 2016-06-24 | 2016-09-07 | 西南交通大学 | Buffer and energy dissipation bridge anti-seismicanti-seismic stop block structure |
| CN206570673U (en) * | 2017-03-02 | 2017-10-20 | 西南交通大学 | A kind of replaceable embedded rebar concrete anti-earthquake baffle block device |
| CN108179809A (en) * | 2018-03-15 | 2018-06-19 | 莆田学院 | The connection method of assembled steel tendon concrete frame structure component |
| CN211200034U (en) * | 2019-09-16 | 2020-08-07 | 莆田学院 | Bridge anti-seismic device provided with hill type flexible stop blocks |
Non-Patent Citations (1)
| Title |
|---|
| 新型桥梁防震挡块作用机理研究;冯云才;任红全;周凯;;四川建筑科学研究;20160425(02);全文 * |
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| Publication number | Publication date |
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| CN110485270A (en) | 2019-11-22 |
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