CN111455818A - Anti-inclination covering type bridge limit stop block device - Google Patents
Anti-inclination covering type bridge limit stop block device Download PDFInfo
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- CN111455818A CN111455818A CN202010266522.1A CN202010266522A CN111455818A CN 111455818 A CN111455818 A CN 111455818A CN 202010266522 A CN202010266522 A CN 202010266522A CN 111455818 A CN111455818 A CN 111455818A
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- stop block
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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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- 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
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
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- 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
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses an anti-tilting type bridge limit stop block device which comprises an upper stop block, a lower stop block and an extensible tensile steel bar, wherein the upper stop block and the lower stop block are respectively connected with a cast-in-place box girder and a lower pier, and a gap is reserved between the upper stop block and the lower stop block; the upper end and the lower end of the extensible tensile reinforcement are respectively embedded in the upper baffle block and the lower baffle block, and the upper end and the lower end of the extensible tensile reinforcement are respectively connected with the embedded reinforcement of the cast-in-place box girder and the embedded reinforcement of the pier. The invention has the advantages of ingenious conception, simple support, definite stress and quick and convenient construction, not only plays a role in longitudinal and transverse earthquake resistance of the bridge, but also provides the effects of uplift resistance and overturn resistance when the bridge overturns, and simultaneously provides the space required by the replacement of the support when the bridge support is replaced.
Description
Technical Field
The invention relates to the technical field of bridge engineering, in particular to an anti-tilting bridge limit stop device.
Background
With the rapid development of urban construction in China, the construction of infrastructures such as urban viaducts and the like is also changing day by day. With the gradual improvement of infrastructure, the requirement of people on the safety of bridge construction is higher and higher. Traditional bridge concrete dog all carries out the lateral rigidity collision with support bed stone or superstructure roof beam body. In the process, because the distance between the lateral direction of the stop block and the support base cushion stone or the upper structure beam body is smaller, the construction space is smaller, and the concrete construction quality of the contact surface of the stop block and the support base cushion stone or the upper structure beam body is difficult to ensure. And the contact surface of the stop block and the cushion stone or the upper structural beam body is smaller, the stress of the concrete limit stop block belongs to the structural form of a cantilever beam, the concrete limit stop block mainly bears the bending resistance, the anti-seismic performance is limited, and the phenomena of brittle failure, such as shearing or crushing, are easy to occur. Along with the rapid development of domestic economy, the overload phenomenon of vehicles is increasingly prominent, bridge overturning accidents are increasingly increased, and the conventional bridge stop block does not have the function of overturning resistance.
Aiming at the situation, a bridge limit stop block device which has abundant construction space, low requirement on the appearance quality of a stressed surface, good bridge overturn resistance and can fully exert the anti-seismic performance of the bridge stop block is needed. The invention can not only play a role in longitudinal and transverse earthquake resistance of the bridge, but also provide the effect of pulling resistance and overturning resistance when the bridge overturns, and simultaneously provide the space required by the replacement of the support when the bridge support is replaced.
Disclosure of Invention
The invention aims to solve the technical problem of providing an anti-overturning bridge limit stop device and a construction method thereof, aiming at the defects in the prior art, wherein the anti-overturning bridge limit stop device is convenient for field construction, strong in connection with a bridge and more reasonable in stress mode. Meanwhile, the stop block has the advantages of simple structure, convenience in construction and good anti-seismic performance, can effectively perform longitudinal and transverse anti-seismic limiting effects on the upper structure, and improves the overall anti-seismic performance of the bridge. The bridge support can also provide the anti-pulling and anti-overturning effect when the bridge overturns, and meanwhile, the bridge support can also provide the space required by the support replacement when the bridge support is replaced.
The technical scheme adopted by the invention for solving the technical problems is as follows:
an anti-tilting bridge limit stop block device comprises an upper stop block, a lower stop block and extensible tensile steel bars, wherein the upper stop block and the lower stop block are respectively connected with a cast-in-place box girder and a lower pier, and a gap is reserved between the upper stop block and the lower stop block;
the upper end and the lower end of the extensible tensile reinforcement are respectively embedded in the upper baffle block and the lower baffle block, and the upper end and the lower end of the extensible tensile reinforcement are respectively connected with the embedded reinforcement of the cast-in-place box girder and the embedded reinforcement of the lower pier.
According to the technical scheme, the upper end and the lower end of the extensible tensile reinforcement are respectively welded with the embedded reinforcement of the cast-in-place box girder and the embedded reinforcement of the lower pier on two sides.
According to the technical scheme, the asphalt paste is poured into the gaps.
According to the technical scheme, the width of a gap between the upper blocking block and the lower blocking block is 4-6 cm.
According to the technical scheme, the extensible tensile steel bars are provided with the semicircular hooks, and the semicircular hooks are arranged in gaps between the upper stop blocks and the lower stop blocks.
According to the technical scheme, the cross sections of the upper stop block and the lower stop block are rectangular or circular.
According to the technical scheme, the extensible tensile steel bar is coated with antirust paint.
According to the technical scheme, the upper stop block and the lower stop block are concrete stop blocks.
The invention has the following beneficial effects:
the stop block has larger construction space and easier control of construction quality; the device can give full play to the bending and tensile resistance of the reinforcing steel bar, and has better shock resistance; effective limiting measures are provided for the bridge anti-overturning effect, and the bridge anti-overturning device has better anti-overturning performance; compared with the areas with seismic requirements in the longitudinal and transverse directions, the seismic requirements in the longitudinal and transverse directions can be met only by arranging 2 stop blocks, so that the engineering quantity is saved; the space required by the replacement of the support is provided, and the space required by the replacement of the bridge support can be met.
Drawings
FIG. 1 is a schematic structural view of an anti-tilting bridge bump stop device according to an embodiment of the present invention applied to a bridge;
FIG. 2 is a partial K view of FIG. 1;
FIG. 3 is a schematic cross-sectional view of an upper stop according to an embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view of an upper stop block according to a second embodiment of the present invention;
in the figure, 1-upper stop block, 2-lower stop block, 3-extensible tensile steel bar, 4-asphalt paste crack pouring, 5-antirust paint, 6-pier embedded steel bar, 7-box girder embedded steel bar, 8-cast-in-place box girder, 9-lower pier, 10-double-side welding and 11-bridge support.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
Referring to fig. 1 to 2, an anti-tilting bridge limit stop device according to an embodiment of the present invention includes an upper stop 1, a lower stop 2, and an extensible tensile bar 3, wherein the upper stop 1 and the lower stop 2 are respectively connected to a cast-in-place box girder 8 and a lower pier 9, and a gap is left between the upper stop 1 and the lower stop 2;
the upper end and the lower end of the extensible tensile reinforcement 3 are respectively embedded in the upper stop block 1 and the lower stop block 2, and the upper end and the lower end of the extensible tensile reinforcement 3 are respectively connected with the extending end of a box girder embedded reinforcement 7 of a cast-in-place box girder 8 and the extending end of a pier embedded reinforcement 6 of a lower pier 9.
Further, the upper end and the lower end of the extensible tensile steel bar 3 are respectively in double-side welding 10 with the box girder embedded steel bar 7 and the pier embedded steel bar 6.
Furthermore, asphalt cement is poured into the gaps to form asphalt cement pouring seams 4; the tensile steel bars are protected from direct contact with air.
Further, the width of the gap between the upper block 1 and the lower block 2 is 5 cm.
Furthermore, the extensible tensile steel bar 3 is provided with a semicircular hook which is arranged in a gap between the upper stop block 1 and the lower stop block 2; the drawing-resistant steel bar is convenient to have certain initial displacement deformation during drawing resistance.
Further, as shown in fig. 3, in the first embodiment, the cross section of the upper block 1 and the lower block 2 is rectangular.
Further, as shown in fig. 4, the cross section of the upper block 1 and the lower block 2 in the second embodiment is circular.
Further, the cast-in-place box girder 8 and the embedded steel bars of the lower pier 9 satisfy the concrete anchoring length.
Further, the extensible tensile steel bars 3 are coated with antirust paint 5; so as to prevent the steel bar from being corroded.
Further, the upper stop block 1 and the lower stop block 2 are both concrete stop blocks.
The working process of the invention is as follows:
the upper surface of a common lower pier 9 is provided with a bridge support 11, and a cast-in-place box girder 8 is placed on the bridge support 11. The limit stop device comprises an upper stop block 1 and a lower stop block 2, wherein the upper stop block 1 is arranged on a cast-in-place box girder 8, the lower stop block 2 is arranged on a lower pier 9, and the middle of the upper stop block and the lower stop block are connected through an extensible tensile steel bar 3, so that the anti-overturning limit stop device is formed. A gap of 4-6 cm is reserved between the upper stop block 1 and the lower stop block 2, and the gap is sealed through asphalt cement pouring 4.
Specifically, according to the actual anti-overturning and anti-seismic requirements of the bridge structure, the pier embedded steel bars 6 and the pier steel bars of the lower pier 9 are bound and installed together in advance, and then the lower pier 9 is cast in place. Meanwhile, the box girder embedded steel bars 7 and the girder body steel bars of the cast-in-place box girder are bound and installed together in advance, and then the cast-in-place box girder 8 is cast in situ. And then, performing double-side welding 10 with the pier embedded steel bars 6 and the box girder embedded steel bars 7 respectively through two ends of the extensible tensile steel bars 3. And finally, pouring the upper stop block 1 and the lower stop block 2 together by using a template of the limit stop block device, reserving a gap of 4-6 cm in the middle, painting antirust paint 5 on the outer leakage part of the extensible tensile steel bar 3, and finally performing crack pouring sealing treatment on the gap of 4-6 cm through asphalt cement crack pouring 4.
The application of the anti-overturning bridge limit stop device of the embodiment is as follows: under the action of earthquake, when the cast-in-place box girder 8 laterally moves in the bridge direction or along the bridge direction, the upper stop block 1 and the extensible tensile steel bar at the lower part of the cast-in-place box girder 8 can effectively limit the limiting action under the bridge and the transverse bridge. Compared with the traditional bridge concrete stop block which is in lateral rigid collision, collision and deformation with a support base cushion stone, the limit stop block can fully exert the tensile property of the reinforcing steel bars and also play a role in buffering efficiency, so that the anti-seismic property of the bridge structure is improved. Meanwhile, under the action of bridge overturning, when the cast-in-place box girder 8 generates vertical overturning displacement, the upper stop block 1 and the extensible tensile steel bar at the lower part of the cast-in-place box girder 8 can effectively limit the vertical overturning displacement of the cast-in-place box girder 8, and the device can effectively prevent the overturning of the upper structure of the bridge. The invention has simple structure, clear and definite mechanical model and quick and convenient construction, not only plays a role in longitudinal and transverse earthquake resistance of the bridge, but also provides the effect of uplift and overturn resistance when the bridge overturns, and simultaneously provides the space required by the replacement of the support when the bridge support is replaced.
In conclusion, the device is convenient for site operation, has strong connection with the bridge and more reasonable stress mode, and is the bridge anti-overturning limit stop device and the construction method thereof. Meanwhile, the stop block has the advantages of simple structure, convenience in construction and good anti-seismic performance, can effectively perform longitudinal and transverse anti-seismic limiting effects on the upper structure, and improves the overall anti-seismic performance of the bridge. The bridge support can also provide the anti-pulling and anti-overturning effect when the bridge overturns, and meanwhile, the bridge support can also provide the space required by the support replacement when the bridge support is replaced.
The above is only a preferred embodiment of the present invention, and certainly, the scope of the present invention should not be limited thereby, and therefore, the present invention is not limited by the scope of the claims.
Claims (8)
1. An anti-tilting bridge limit stop block device is characterized by comprising an upper stop block, a lower stop block and extensible tensile steel bars, wherein the upper stop block and the lower stop block are respectively connected with a cast-in-place box girder and a lower pier, and a gap is reserved between the upper stop block and the lower stop block;
the upper end and the lower end of the extensible tensile reinforcement are respectively embedded in the upper baffle block and the lower baffle block, and the upper end and the lower end of the extensible tensile reinforcement are respectively connected with the embedded reinforcement of the cast-in-place box girder and the embedded reinforcement of the lower pier.
2. The anti-overturning type bridge limit stop device according to claim 1, wherein upper and lower ends of the extensible tensile reinforcement are respectively welded to both sides of the embedded reinforcement of the cast-in-place box girder and the embedded reinforcement of the lower pier.
3. The anti-tilt bridge bump stop device of claim 1 wherein the voids are filled with asphalt cement.
4. The anti-tilt bridge bump stop device according to claim 1, wherein the width of the gap between the upper and lower bumps is 4 to 6 cm.
5. The anti-tilt bridge bump stop device according to claim 1, wherein the extensible tensile reinforcement is provided with a semicircular hook, and the semicircular hook is disposed in a gap between the upper and lower bumps.
6. The anti-tilt bridge bump stop device of claim 1, wherein the upper and lower bumps are rectangular or circular in cross section.
7. The anti-tilt bridge bump stop device of claim 1, wherein the tensile extensible steel bars are painted with an anti-rust paint.
8. The anti-tilt bridge bump stop device of claim 1, wherein the upper and lower bumps are concrete bumps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010266522.1A CN111455818B (en) | 2020-04-07 | 2020-04-07 | Anti-inclination covering type bridge limit stop block device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010266522.1A CN111455818B (en) | 2020-04-07 | 2020-04-07 | Anti-inclination covering type bridge limit stop block device |
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| Publication Number | Publication Date |
|---|---|
| CN111455818A true CN111455818A (en) | 2020-07-28 |
| CN111455818B CN111455818B (en) | 2022-08-09 |
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| CN202010266522.1A Active CN111455818B (en) | 2020-04-07 | 2020-04-07 | Anti-inclination covering type bridge limit stop block device |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202755299U (en) * | 2012-08-27 | 2013-02-27 | 上海市城市建设设计研究总院 | Anti-shock check block structure for transverse bridge direction compound-type pier |
| CN203129002U (en) * | 2013-03-20 | 2013-08-14 | 中铁六局集团天津铁路建设有限公司 | Device capable of preventing beam from falling off |
| CN203546584U (en) * | 2013-10-31 | 2014-04-16 | 中铁二院工程集团有限责任公司 | Pier foundation seismic isolation structure |
| CN106436558A (en) * | 2016-11-18 | 2017-02-22 | 南昌大学 | Three-way limiting buffering bridge anti-seismic stop dog structure and arranging and installing method |
| CN108374335A (en) * | 2018-05-10 | 2018-08-07 | 长安大学 | A kind of multiple protective girder girder falling and energy-consuming device and preparation method thereof |
| CN110847057A (en) * | 2019-12-13 | 2020-02-28 | 南京润华建设集团有限公司 | Flexible connection structure for continuous box girder cantilever casting |
-
2020
- 2020-04-07 CN CN202010266522.1A patent/CN111455818B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202755299U (en) * | 2012-08-27 | 2013-02-27 | 上海市城市建设设计研究总院 | Anti-shock check block structure for transverse bridge direction compound-type pier |
| CN203129002U (en) * | 2013-03-20 | 2013-08-14 | 中铁六局集团天津铁路建设有限公司 | Device capable of preventing beam from falling off |
| CN203546584U (en) * | 2013-10-31 | 2014-04-16 | 中铁二院工程集团有限责任公司 | Pier foundation seismic isolation structure |
| CN106436558A (en) * | 2016-11-18 | 2017-02-22 | 南昌大学 | Three-way limiting buffering bridge anti-seismic stop dog structure and arranging and installing method |
| CN108374335A (en) * | 2018-05-10 | 2018-08-07 | 长安大学 | A kind of multiple protective girder girder falling and energy-consuming device and preparation method thereof |
| CN110847057A (en) * | 2019-12-13 | 2020-02-28 | 南京润华建设集团有限公司 | Flexible connection structure for continuous box girder cantilever casting |
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| CN111455818B (en) | 2022-08-09 |
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