CN111705626A - Device for preventing beam type bridge from overturning - Google Patents
Device for preventing beam type bridge from overturning Download PDFInfo
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- CN111705626A CN111705626A CN202010492788.8A CN202010492788A CN111705626A CN 111705626 A CN111705626 A CN 111705626A CN 202010492788 A CN202010492788 A CN 202010492788A CN 111705626 A CN111705626 A CN 111705626A
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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
- E01D2101/30—Metal
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Abstract
The invention discloses a device for preventing a beam type bridge from overturning, which comprises a plurality of overturning preventing units arranged on two sides of the beam type bridge; each anti-overturning unit is respectively connected with the main beam and the corresponding pier column; each overturn preventing unit comprises a first component and a second component which are respectively connected with the main beam or the corresponding pier stud; the first part comprises a core rod, a limiting block and a first anchoring block; one end of the core rod is provided with a first anchoring block, and the other end of the core rod is provided with a limiting block; the second part comprises a stop block and a second anchoring block; the stop block is provided with a through hole matched with the cross section of the core rod; a gap is formed between the core rod and the inner wall of the through hole; the check block is connected with the corresponding pier column or the main beam through the second anchoring block; the limiting block is tightly attached to the stop block to restrict the relative position between the first anchoring block and the second anchoring block. The invention not only can solve the problem of overturning reinforcement of the existing beam bridge, but also can avoid setting too complicated structural measures for preventing the bridge from overturning, thereby reducing the construction cost of the structure.
Description
Technical Field
The invention relates to the technical field of bridge structures, in particular to a device for preventing a beam type bridge from overturning.
Background
A beam bridge is a bridge with a main beam as the main load-bearing structure. The upper structure of the device only generates vertical counter force at the pivot under the action of vertical load. The beam bridge is one of basic systems of the bridge, is convenient to manufacture and erect, is widely used and occupies a large proportion in the bridge structure. The beam bridge can be divided into a simple beam bridge, a continuous beam bridge and a cantilever beam bridge according to the stress form, the overturning problem of the beam bridge is the problem needing attention in the structural design, particularly the continuous beam bridge with a single support for supporting a single column by a middle pier, and the simple beam bridge with double supports and smaller distance between the double supports.
For a simply supported girder bridge with only a single main girder or a cross girder, a double support is usually adopted at a fulcrum during design, and the support needs to be supported on a cover girder; however, when the lower structural space is limited, the transverse size of the cover beam is limited, so that the transverse distance between the double supports is small, overturning accidents are easy to happen, and particularly, curved bridges are easy to happen. In addition, the continuous beam bridge with the middle pier supporting the single support for the single column is easy to overturn, and the structure can greatly save the building space and has attractive structural form, so the continuous beam bridge is often adopted in urban overpasses and high-speed ramp bridges. In recent years, the occurrence of multiple overturn accidents is in the form of a continuous beam bridge with a middle pier serving as a single column for supporting a single support.
In 23 days 10.2007, when a certain autonomous region viaduct overturns, two heavy trucks and a car running on the viaduct slide to the bottom of the viaduct along with the road surface, and the special railway line of the under-bridge wrapping ring (surrounding the city loop line) is interrupted. 15 days 7 and 15 days 2009, an overturning accident happens to a continuous single-column pier ramp bridge outside a certain highway toll station, 6 people die and 4 people are injured due to the accident.
In another example, in 2011, 2, 21 months, 3 people are injured due to overturn of an approach bridge of a certain overpass, and the overturned approach bridge is of a single-column continuous beam structure. 24 months and 8 months in 2012, the overturning accident happens to the bridge separation type ramp on the flood lake of a certain viaduct, and 3 dead people and 5 injured people are caused by the accident.
And 10 months and 10 days in 2019, a major accident of side turning of the bridge deck occurs at the K135 position of the 312 national road in the tin mountain area of a certain city in Jiangsu province, 3 people die and 2 people are injured, so that great social influence is caused. Similar beam type bridges have frequent overturning accidents in short years, so that the overturning problem of the structure draws wide attention.
At present, the self-checking work of the beam bridge is carried out all over the country, and the bridge with possible overturning is reinforced. For the continuous beam bridge with the middle pier supporting a single support for a single column, the reinforcing method basically changes the single support supported by the middle single column into a double support.
However, due to the requirement of the placing space of the support, the area of the single column of the middle pier can not be provided with two supports in general, so that a cover beam needs to be additionally arranged, or the area of the middle pier needs to be increased, and the like, so as to provide two supports or more supports. However, in any way, the reinforcing method of changing a single support into a double support requires a large amount of work to be completed, the construction is complicated, and the reinforcing method cannot be adopted for a bridge with a limited middle pier space. For a simply supported beam bridge with a closer double support, the reinforcing method basically changes a compression-resistant support into a tensile/compression support, namely, the simply supported beam bridge has both a compression-resistant function and a tensile function, thereby avoiding the overturning of a beam body.
However, the tensile/compressive support is expensive, and the beam body needs to be jacked when the original support is replaced, so that the construction is complex.
In conclusion, practice shows that beam bridges, especially continuous beam bridges with single-column single-support middle piers and simple beam bridges with double-support closer are easy to have overturning accidents, and have certain urgency for overturning and reinforcing the existing bridges.
Therefore, how to reduce the cost of preventing the beam bridge from overturning is a technical problem that needs to be solved urgently by those skilled in the art.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the present invention provides a device for preventing a beam bridge from overturning, which can not only solve the overturning reinforcement problem of the existing beam bridge, but also be applied to a newly-built beam bridge to avoid setting too complicated structural measures for preventing the bridge from overturning, thereby reducing the construction cost of the structure.
In order to achieve the above object, the present invention discloses a device for preventing a beam bridge from overturning, which comprises a plurality of overturn-preventing units disposed at both sides of the beam bridge.
Each anti-overturning unit is respectively connected with the main beam and the corresponding pier column;
each overturn preventing unit comprises a first component and a second component which are respectively connected with the main beam or the corresponding pier stud;
the first part comprises a core rod, a limiting block and a first anchoring block;
one end of the core rod is provided with the first anchoring block, and the first anchoring block is vertically arranged on two sides of the beam type bridge and connected with the main beam or the corresponding pier stud;
the other end of the core rod is provided with the limiting block;
the second part comprises a stop block and a second anchoring block;
the stop block is provided with a through hole matched with the cross section of the core rod, and the size of the through hole is larger than the external size of the core rod and smaller than the external size of the limiting block;
the stop block is sleeved on the core rod through the through hole, and a gap is formed between the core rod and the inner wall of the through hole;
the stop block is connected with the corresponding pier column or the main beam through the second anchoring block;
the limiting block is tightly attached to the stop block to restrict the relative position between the first anchoring block and the second anchoring block.
Preferably, the capping beams are arranged on the plurality of pier studs; the main beam is erected on the pier stud; each overturn-preventing unit is connected with the corresponding pier stud through the cover beam.
More preferably, the first component is anchored to the bottom or side of the main beam by the first anchoring block; the second member is anchored to the capping beam by a second anchor block.
More preferably, the first member is anchored to the capping beam by the first anchor block and the second member is anchored to the main beam by the second anchor block.
Preferably, the first member and the second member are made of steel.
Preferably, the core rod is connected with the limiting block and the first anchoring block in a welding mode, or is manufactured into an integral piece in a casting mode.
Preferably, the stop block and the second anchoring block are connected by welding or are manufactured as an integral piece by casting.
Preferably, the clearance between the mandrel and the inner wall of the through hole is determined by deformation in the horizontal direction of the main beam, the deformation includes temperature deformation and shrinkage creep, and the gap satisfies the displacement in the horizontal direction of the main beam due to the deformation.
The invention has the beneficial effects that:
the invention limits the vertical displacement of the main beam, thereby solving the overturning problem of the main beam. The device simple structure, the preparation is convenient, and the construction is convenient, is applicable to the reinforcement of preventing toppling of having had the bridge, also is applicable to newly-built bridge.
The invention not only can solve the overturning problem of the girder, but also can play a role in limiting the abnormal longitudinal and transverse displacement of the bridge, for example, the girder can be prevented from falling under the action of an earthquake, the transverse displacement of the girder under the accidental action of automobiles and the like can be limited, and the invention not only can play a role in preventing the girder from overturning, but also can play a role in preventing the girder from falling by the longitudinal and transverse stoppers of the girder.
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.
Drawings
Fig. 1 is a schematic structural view illustrating a structure in which an anti-toppling unit is provided between a girder and a pier stud according to an embodiment of the present invention.
Fig. 2 is a schematic structural view illustrating that the overturn preventing unit is disposed between the main beam and the capping beam according to an embodiment of the present invention.
Fig. 3 shows a schematic side view of a first component according to an embodiment of the invention.
Fig. 4 shows a schematic end view of a first component according to an embodiment of the invention.
Fig. 5 shows a schematic side view of a second component according to an embodiment of the invention.
Fig. 6 shows a schematic end view of a second component according to an embodiment of the invention.
Fig. 7 is a schematic structural view showing a state where the first member and the second member are combined in one embodiment of the present invention.
Detailed Description
Examples
As shown in fig. 1, 3 to 7, the device for preventing a beam bridge from overturning includes a plurality of overturn prevention units 1 disposed at both sides of the beam bridge.
Each overturn-preventing unit 1 is respectively connected with a main beam 2 and a corresponding pier stud 3;
each overturn preventing unit 1 comprises a first component and a second component which are respectively connected with the main beam 2 or the corresponding pier stud 3;
the first part comprises a core rod 12, a limiting block 11 and a first anchoring block 13;
one end of the core rod 12 is provided with a first anchoring block 13, and the first anchoring blocks 13 are vertically arranged on two sides of the beam type bridge and connected with the main beam 2 or the corresponding pier stud 3;
the other end of the core rod 12 is provided with a limiting block 11;
the second part comprises a stopper 14 and a second anchoring block 15;
the stop block 14 is provided with a through hole matched with the cross section of the core rod 12, and the size of the through hole is larger than the external size of the core rod 12 and smaller than the external size of the limiting block 11;
the stopper 14 is sleeved on the core rod 12 through the through hole, and a gap is formed between the core rod 12 and the inner wall of the through hole;
the stop block 14 is connected with the corresponding pier stud 3 or the main beam 2 through a second anchoring block 15;
the limiting block 11 is tightly attached to the stop block 14 to restrict the relative position between the first anchoring block 13 and the second anchoring block 15.
The principle of the invention is that a lower structure (pier stud 3 or cover beam 4) is used for providing support, and when the column beam 1 bears an unbalance load through the overturn-preventing unit 1, tensile force is applied to two sides of the main beam 1, so that the overturn problem does not occur under the unbalance load action. The overturn-preventing unit 1 is simple in structure and convenient to implement, can be used for a newly-built beam type bridge and is also suitable for overturn reinforcement of the built beam type bridge.
As shown in fig. 2, in some embodiments, a plurality of piers 3 are provided with capping beams 4; the main beam 2 is erected on the pier stud 3; each anti-overturning unit 1 is connected with a corresponding pier 3 through a bent cap 4.
In some embodiments, the first component is anchored to the bottom or side of the main beam 2 by a first anchor block 13; the second part is anchored to the capping beam 4 by means of a second anchor block 15.
In some embodiments, the first component is anchored to the capping beam 4 by a first anchor block 13 and the second component is anchored to the main beam 2 by a second anchor block 15.
In some embodiments, the first and second components are made of steel.
In some embodiments, the core rod 12 is connected to the stopper 11 and the first anchor block 13 by welding or is made as a single piece by casting.
In some embodiments, the block 14 and the second anchor block 15 are connected by welding or are made as a single piece by casting.
In some embodiments, the clearance between the mandrel 12 and the inner wall of the through-hole is determined by the horizontal deformation of the main beam 2, which includes temperature deformation and creep, the clearance satisfying the horizontal displacement of the main beam 2 due to the deformation.
In practical application, firstly, the second component is anchored on the pier stud 3 through the second anchoring block 15, the anchoring mode can adopt the forms of bar planting or anchor bolts and the like, and the anchored pier stud 3 can be locally reinforced; the stop 14 of the second part is preferably horizontal;
secondly, the core rod 12 of the first component passes through the through hole on the second component block 14;
finally, the first component is anchored (main beam 1 made of concrete) or welded (main beam 1 made of steel structure) to the main beam 1 by means of the first anchoring block 13.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (8)
1. The device for preventing the beam type bridge from overturning comprises a plurality of overturn-preventing units (1) arranged on two sides of the beam type bridge; the overturn preventing device is characterized in that each overturn preventing unit (1) is respectively connected with a main beam (2) and a corresponding pier column (3);
each overturn-preventing unit (1) comprises a first component and a second component which are respectively connected with the main beam (2) or the corresponding pier stud (3);
the first component comprises a core rod (12), a limiting block (11) and a first anchoring block (13);
one end of the core rod (12) is provided with the first anchoring block (13), and the first anchoring blocks (13) are vertically arranged on two sides of the beam bridge and are connected with the main beam (2) or the corresponding pier stud (3);
the other end of the core rod (12) is provided with the limiting block (11);
the second part comprises a block (14) and a second anchoring block (15);
the stop block (14) is provided with a through hole matched with the cross section of the core rod (12), and the size of the through hole is larger than the external dimension of the core rod (12) and smaller than the external dimension of the limiting block (11);
the stop block (14) is sleeved on the core rod (12) through the through hole, and a gap is formed between the core rod (12) and the inner wall of the through hole;
the stop blocks (14) are connected with the corresponding pier columns (3) or the main beams (2) through the second anchoring blocks (15);
the limiting block (11) is tightly attached to the stop block (14) to restrict the relative position between the first anchoring block (13) and the second anchoring block (15).
2. The device for preventing the overturn of the beam bridge according to the claim 1, wherein a plurality of the piers (3) are provided with the cap beams (4); the main beam (2) is erected on the pier stud (3); each overturn-preventing unit (1) is connected with the corresponding pier column (3) through the cover beam (4).
3. The device for preventing overturn of a beam bridge according to claim 2, characterized in that the first member is anchored to the bottom or side of the girder (2) by the first anchoring block (13); the second part is anchored to the capping beam (4) by means of a second anchoring block (15).
4. A device for preventing overturn of a beam bridge according to claim 2, characterized in that the first component is anchored to the capping beam (4) by means of the first anchoring block (13), and the second component is anchored to the main beam (2) by means of the second anchoring block (15).
5. The apparatus for preventing a girder bridge from overturning according to claim 1, wherein the first member and the second member are made of steel.
6. The device for preventing overturn of beam bridge according to claim 1, characterized in that the core rod (12) is connected with the stopper (11) and the first anchoring block (13) by welding or is made in a single piece by casting.
7. A device for preventing overturning of a beam bridge according to claim 1, wherein said block (14) and said second anchoring block (15) are connected by welding or made in a single piece by casting.
8. The apparatus for preventing a girder bridge from overturning according to claim 1, wherein the clearance between the core rod (12) and the inner wall of the through hole is determined by deformation in the horizontal direction of the girder (2), the deformation including temperature deformation and shrinkage creep, and the clearance satisfies the displacement in the horizontal direction of the girder (2) due to the deformation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010492788.8A CN111705626A (en) | 2020-06-03 | 2020-06-03 | Device for preventing beam type bridge from overturning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010492788.8A CN111705626A (en) | 2020-06-03 | 2020-06-03 | Device for preventing beam type bridge from overturning |
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| Publication Number | Publication Date |
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| CN111705626A true CN111705626A (en) | 2020-09-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010492788.8A Pending CN111705626A (en) | 2020-06-03 | 2020-06-03 | Device for preventing beam type bridge from overturning |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112575696A (en) * | 2020-12-16 | 2021-03-30 | 无锡市政设计研究院有限公司 | Anti-overturning reinforcing structure applied to single-column pier bridge and installation method |
| CN112663511A (en) * | 2021-01-12 | 2021-04-16 | 山西省交通科技研发有限公司 | Implementation method for improving safety performance of single-column pier bridge |
| CN112663510A (en) * | 2021-01-12 | 2021-04-16 | 山西省交通科技研发有限公司 | Method for treating transverse stability of single-column pier bridge |
| CN112663521A (en) * | 2021-01-12 | 2021-04-16 | 山西省交通科技研发有限公司 | Improvement and reconstruction method for transverse anti-overturning performance of bridge |
| CN114575272A (en) * | 2022-04-06 | 2022-06-03 | 交通运输部公路科学研究所 | Single-column pier transverse bridge anti-overturning reinforcing limiting device |
| CN114737467A (en) * | 2022-05-20 | 2022-07-12 | 中亿丰建设集团股份有限公司 | Bridge anti-overturning device and construction method thereof |
-
2020
- 2020-06-03 CN CN202010492788.8A patent/CN111705626A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112575696A (en) * | 2020-12-16 | 2021-03-30 | 无锡市政设计研究院有限公司 | Anti-overturning reinforcing structure applied to single-column pier bridge and installation method |
| CN112663511A (en) * | 2021-01-12 | 2021-04-16 | 山西省交通科技研发有限公司 | Implementation method for improving safety performance of single-column pier bridge |
| CN112663510A (en) * | 2021-01-12 | 2021-04-16 | 山西省交通科技研发有限公司 | Method for treating transverse stability of single-column pier bridge |
| CN112663521A (en) * | 2021-01-12 | 2021-04-16 | 山西省交通科技研发有限公司 | Improvement and reconstruction method for transverse anti-overturning performance of bridge |
| CN112663511B (en) * | 2021-01-12 | 2022-08-16 | 山西省交通科技研发有限公司 | Implementation method for improving safety performance of single-column pier bridge |
| CN112663521B (en) * | 2021-01-12 | 2022-09-23 | 山西省交通科技研发有限公司 | Improvement and reconstruction method for transverse anti-overturning performance of bridge |
| CN114575272A (en) * | 2022-04-06 | 2022-06-03 | 交通运输部公路科学研究所 | Single-column pier transverse bridge anti-overturning reinforcing limiting device |
| CN114737467A (en) * | 2022-05-20 | 2022-07-12 | 中亿丰建设集团股份有限公司 | Bridge anti-overturning device and construction method thereof |
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