CN112081022B - Anti-seismic device for reinforcing old bridge - Google Patents
Anti-seismic device for reinforcing old bridge Download PDFInfo
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- CN112081022B CN112081022B CN202011158650.0A CN202011158650A CN112081022B CN 112081022 B CN112081022 B CN 112081022B CN 202011158650 A CN202011158650 A CN 202011158650A CN 112081022 B CN112081022 B CN 112081022B
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- plates
- plate
- stop block
- elastic thin
- shaped structure
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- 230000003014 reinforcing effect Effects 0.000 title abstract description 6
- 230000021715 photosynthesis, light harvesting Effects 0.000 claims abstract description 44
- 238000007789 sealing Methods 0.000 claims abstract description 27
- 238000005265 energy consumption Methods 0.000 claims abstract description 16
- 230000035939 shock Effects 0.000 claims abstract description 6
- 238000013016 damping Methods 0.000 claims abstract description 3
- 230000002265 prevention Effects 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims 4
- 230000000116 mitigating effect Effects 0.000 claims 1
- 238000010521 absorption reaction Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004080 punching Methods 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
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling 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
- E01D19/00—Structural or constructional details of bridges
-
- 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 provides an anti-seismic device for reinforcing an old bridge, which comprises a stop block fixing system and an energy consumption and shock absorption system, wherein the stop block fixing system comprises a fixing plate and bolts, the fixing plate is arranged on three sides of an anti-falling beam stop block, and the fixing plate is fixedly connected to the anti-falling beam stop block in a mode of inserting the bolts into the anti-falling beam stop block; the energy-dissipation damping system is positioned between the anti-falling beam stop block and the main beam and comprises two energy-dissipation plates, two elastic thin plates, four stiffening plates and four sealing plates, wherein the two energy-dissipation plates are arranged in a crossing manner, the cross sections of the two energy-dissipation plates in the length direction of the vertical main beam are of an X-shaped structure, and one side of the X-shaped structure, which is opposite to the main beam, and one side, which is opposite to the main beam, are respectively provided with the elastic thin plates; the four stiffening plates are respectively arranged on four sides of the X-shaped structure; the four sealing plates are respectively arranged on four sides of the X-shaped structure, the four sides are not the sides where the two elastic thin plates are arranged, and each sealing plate is fixedly connected with two energy dissipation plates. The anti-vibration block designed by the invention is additionally arranged on the existing old bridge, and can improve the anti-vibration capability of the old bridge.
Description
Technical Field
The invention relates to the field of bridge seismic resistance, in particular to a seismic resistance device for reinforcing an old bridge.
Background
Along with the development of traffic construction in China, the bridge conservation amount is in the first place in the world. The number of the bridges with small and medium spans in the existing bridges is more than 95%. However, due to the lack of the bridge earthquake-proof theoretical level in the early stage, the earthquake-proof design consideration of the bridge is incomplete, particularly the bridge with small and medium span in the early stage is often only provided with an anti-falling beam stop block, and the stop block has no earthquake-proof effect, and is easy to damage once earthquake occurs due to insufficient design rigidity, so that the protection effect cannot be achieved at all. The bridge structure survey results after multiple earthquakes in China also prove that the existing old bridge deck is easy to damage when an earthquake occurs, and the damage effect of the earthquake cannot be resisted at all. Therefore, aiming at large-quantity and wide-range old bridges with medium and small spans, an effective and economic bridge anti-seismic device is designed, so that the anti-seismic performance of the bridge of the type can be obviously improved.
Disclosure of Invention
In view of the above, it is necessary to provide an earthquake-resistant apparatus for reinforcing an old bridge, which is attached to an existing old bridge to improve the earthquake resistance of the old bridge.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
The anti-seismic device comprises a stop block fixing system and an energy consumption and shock absorption system, wherein the stop block fixing system comprises a fixing plate and bolts, the fixing plate is arranged on three side surfaces of an anti-falling beam stop block, the three side surfaces are respectively the top surface of the anti-falling beam stop block, the side surface opposite to a main beam and the side surface opposite to the main beam, a plurality of bolt holes are formed in the fixing plate, each bolt hole is connected with a bolt in a threaded manner, and the fixing plate is fixedly connected to the anti-falling beam stop block in a mode of inserting the anti-falling beam stop block through the bolts; the energy-consumption damping system is positioned between the beam falling prevention stop block and the main beam and comprises two energy consumption plates, two elastic thin plates, four stiffening plates and four sealing plates, wherein the two energy consumption plates are arranged in a crossing way, the cross sections of the two energy consumption plates in the vertical direction of the main beam are of an X-shaped structure, one side of the X-shaped structure, which is opposite to the main beam, and one side, which is opposite to the main beam, of the X-shaped structure are respectively provided with an elastic thin plate, each elastic thin plate is vertically arranged, the two ends of each elastic thin plate, which face the energy consumption plates, are fixedly connected with the energy consumption plates, one elastic thin plate is fixedly connected to the beam falling prevention stop block through a fixing plate, which faces the main beam, and the other elastic thin plate is spaced from the main beam in a natural state; the four stiffening plates are respectively arranged on four sides of the X-shaped structure, the four sides are respectively the side where the two elastic thin plates are arranged and the upper side and the lower side of the X-shaped structure, wherein the stiffening plate on the side where the two elastic thin plates are arranged is arranged between the two elastic thin plates, each stiffening plate is vertically arranged, the upper end and the lower end of each stiffening plate are respectively fixedly connected with two energy dissipation plates, the two stiffening plates on the upper side and the lower side of the X-shaped structure are horizontally arranged, and the two ends in the horizontal direction are respectively fixedly connected with the two energy dissipation plates; the four sealing plates are respectively arranged on four sides of the X-shaped structure, the four sides are not the sides where the two elastic thin plates are arranged, each sealing plate is fixedly connected with two energy dissipation plates, wherein the two sealing plates on the upper side and the lower side of the X-shaped structure are horizontally arranged, two ends of the sealing plates in the horizontal direction are respectively fixedly connected with the two energy dissipation plates, and the sealing plates are positioned on the outer sides of the two stiffening plates.
Preferably, the energy dissipation plate is made of special metal materials or alloy materials.
Preferably, the elastic sheet is made of steel material having a carbon content of less than 0.25%.
Preferably, the elastic sheet is fixedly connected to the end of the energy dissipation plate in a welding mode.
Preferably, the sealing plate is fixedly connected to the end of the energy dissipation plate in a welding mode.
Preferably, the outer surface of the sealing plate is coated with an anti-rust coating.
Preferably, the cross sections of the four stiffening plates in the direction perpendicular to the length direction of the main beams enclose a rectangular structure.
The invention is added on the existing bridge, in particular to the bridge between the anti-falling beam stop block and the main beam, and the anti-seismic principle during the use is as follows:
When an earthquake occurs, the distance between the main beam and the anti-falling beam stop block can change, at the moment, a certain anti-seismic device between the main beam and the anti-falling beam stop block can be extruded, the energy dissipation plate of the anti-seismic device can deform, the deformation of the energy dissipation plate leads to the deformation of the elastic thin plate, the elastic thin plate generates corresponding restoring force to prevent the main beam from approaching the anti-falling beam stop block due to the deformation, and in addition, the energy dissipation plate also prevents the main beam from approaching the anti-falling beam stop block due to the deformation, so that the anti-seismic effect is achieved to a certain extent.
In the invention, the anti-seismic device mainly utilizes the inelastic characteristic of the energy dissipation plate after yielding to dissipate energy in an external excitation input structure such as earthquake and the like, and secondly utilizes the elastic force of the elastic thin plate to prevent vibration.
Therefore, compared with the prior art, the invention has the following beneficial effects:
(1) The invention has the advantages of low yield point, firmness and durability, long-term use and maintenance-free performance, and the shock resistance (vibration) is not affected by temperature, thus being a product with economic benefit in various energy dissipation and shock absorption devices at present;
(2) The vibration-proof device has simple construction principle and very simple manufacture, and can be manufactured only according to the size of the anti-falling beam stop block of the actual reinforced bridge and the distance between the anti-falling beam stop block and the main beam;
(3) The anti-vibration block designed by the invention is convenient to install on site, and only the manufactured device is sleeved on the anti-falling beam stop block;
(4) The invention has no damage to the existing structure, and the provided shockproof device is fixed on the beam falling prevention stop block only by bolts without punching on the existing structure;
(5) The device has the advantages of reliability, high efficiency, economy and the like.
Drawings
Fig. 1 is a schematic view of the structure of the seismic apparatus of the invention.
Fig. 2 is a schematic view of the structure of the seismic device of the invention when it is arranged.
Description of the main reference signs
In the figure: the anti-falling beam comprises a fixing plate 1, bolts 2, energy consumption plates 3, an elastic plate 4, stiffening plates 5, sealing plates 6, anti-vibration devices 100, main beams 200, capping beams 300 and anti-falling beam stop blocks 400.
The invention will be further described in the following detailed description in conjunction with the above-described figures.
Detailed Description
Referring to fig. 1 to 2, in a preferred embodiment of the present invention, an anti-seismic device for reinforcing an old bridge includes a stopper 400 fixing system and an energy-consuming and shock-absorbing system. The stop block 400 fixing system comprises a fixing plate 1 and bolts 2, wherein the fixing plate 1 is arranged on three side surfaces of an anti-falling beam stop block 400 on the cover beam 300, the three side surfaces are respectively the top surface of the anti-falling beam stop block 400, the side surface opposite to the main beam 200 and the side surface opposite to the main beam 200, a plurality of bolt holes are formed in the fixing plate 1, each bolt hole is in threaded connection with one bolt 2, and the fixing plate 1 is fixedly connected to the anti-falling beam stop block 400 in a mode of inserting the anti-falling beam stop block 400 through the bolts 2; the energy dissipation and shock absorption system is located between the girder 200 and the girder 400, and comprises two energy dissipation plates 3, two elastic thin plates 4, four stiffening plates 5 and four sealing plates 6, wherein the two energy dissipation plates 3 are arranged in a crossing manner, the cross sections of the two energy dissipation plates perpendicular to the length direction of the girder 200 are in an x-shaped structure, one side of the x-shaped structure, which is opposite to the girder 200, and one side, which is opposite to the girder 200, are respectively provided with an elastic thin plate 4, each elastic thin plate 4 is vertically arranged, two ends, which face the energy dissipation plates 3, of each elastic thin plate 4 are fixedly connected with the energy dissipation plates 3, one elastic thin plate 4 is fixedly connected to the girder 400 through a fixing plate 1, which faces the girder 200, and the other elastic thin plate 4 is spaced from the girder 200 in a natural state; four stiffening plates 5 are respectively arranged on four sides of the X-shaped structure, the four sides are respectively the side where the two elastic thin plates 4 are arranged and the upper side and the lower side of the X-shaped structure, wherein the stiffening plates 5 positioned on the side where the two elastic thin plates 4 are arranged are positioned between the two elastic thin plates 4, each stiffening plate 5 is vertically arranged, the upper end and the lower end of each stiffening plate are respectively fixedly connected with the two energy dissipation plates 3, the two stiffening plates 5 positioned on the upper side and the lower side of the X-shaped structure are horizontally arranged, and the two ends of each stiffening plate in the horizontal direction are respectively fixedly connected with the two energy dissipation plates 3; the four sealing plates 6 are respectively arranged on four sides of the X-shaped structure, the four sides are not the sides where the two elastic thin plates 4 are arranged, each sealing plate 6 is fixedly connected with two energy dissipation plates 3, wherein the two sealing plates 6 arranged on the upper side and the lower side of the X-shaped structure are horizontally arranged, two ends of the two sealing plates 6 in the horizontal direction are respectively fixedly connected with the two energy dissipation plates 3, and the two sealing plates are arranged on the outer sides of the two stiffening plates 5.
In the present invention, the shock-proof device 100 is disposed between the girder 200 and the girder 400, and a plurality of shock-proof devices may be disposed according to the length of the girder 200, and when disposed, the shock-proof device is fixed on the girder 400 through a fixing system of the girder 400, and the elastic thin plate 4 in the shock-proof system faces the girder 200, but has a distance from the girder 200, when the distance between the girder 200 and the girder 400 changes due to external excitation such as an earthquake, the girder 200 will be pressed onto a shock-proof device 100, specifically, two ends of the two energy dissipation plates 3 facing the girder 200 abut against the girder 200 and the elastic thin plate 4 facing the girder 200 abut against the girder 200, so that the energy dissipation plates 3 and the elastic thin plate 4 deform, and the restoring force generated by the deformation of the two plates can prevent the girder 200 from approaching the girder 400, thereby playing a role of shock-proof.
Preferably, the energy dissipation plate 3 is made of special metal material (such as mild steel) or alloy material, so that the energy dissipation plate 3 has the characteristics of yielding easily and high energy dissipation. The elastic sheet 4 is made of steel with carbon content less than 0.25%, so that the elastic sheet 4 has the characteristic of easy deformation after stress.
Further, in the present embodiment, the elastic sheet 4 is fixedly connected to the end of the energy dissipation plate 3 by welding. The sealing plate 6 is fixedly connected to the end of the energy dissipation plate 3 in a welding mode, and forms a closed structure together with the elastic thin plate 4, the energy dissipation plate 3 and the stiffening plate 5 are accommodated in the closed structure, rainwater can be prevented from entering, the energy dissipation plate 3, the stiffening plate 5 and the like are prevented from being corroded, and further preferably, an anti-rust coating is smeared on the outer surface of the sealing plate 6, and further rust prevention is achieved. The cross sections of the four stiffening plates 5 in the direction perpendicular to the length direction of the main beam 200 enclose a rectangular structure, so that the two energy consumption plates 3 can be well fixed.
The foregoing description is directed to the preferred embodiments of the present invention, but the embodiments are not intended to limit the scope of the invention, and all equivalent changes or modifications made under the technical spirit of the present invention should be construed to fall within the scope of the present invention.
Claims (5)
1. A antidetonation device for old bridge consolidates, includes dog fixing system and power consumption shock mitigation system, its characterized in that: the stop block fixing system comprises a fixing plate and bolts, wherein the fixing plate is arranged on three side surfaces of the anti-falling beam stop block, the three side surfaces are respectively the top surface of the anti-falling beam stop block, the side surface opposite to the main beam and the side surface opposite to the main beam, a plurality of bolt holes are formed in the fixing plate, each bolt hole is connected with a bolt in a threaded manner, and the fixing plate is fixedly connected to the anti-falling beam stop block in a mode of inserting the anti-falling beam stop block through the bolts; the energy-consumption damping system is positioned between the beam falling prevention stop block and the main beam and comprises two energy consumption plates, two elastic thin plates, four stiffening plates and four sealing plates, wherein the two energy consumption plates are arranged in a crossing way, the cross sections of the two energy consumption plates in the vertical direction of the main beam are of an X-shaped structure, one side of the X-shaped structure, which is opposite to the main beam, and one side, which is opposite to the main beam, of the X-shaped structure are respectively provided with an elastic thin plate, each elastic thin plate is vertically arranged, the two ends of each elastic thin plate, which face the energy consumption plates, are fixedly connected with the energy consumption plates, one elastic thin plate is fixedly connected to the beam falling prevention stop block through a fixing plate, which faces the main beam, and the other elastic thin plate is spaced from the main beam in a natural state; the four stiffening plates are respectively arranged on four sides of the X-shaped structure, the four sides are respectively the side where the two elastic thin plates are arranged and the upper side and the lower side of the X-shaped structure, wherein the stiffening plate on the side where the two elastic thin plates are arranged is arranged between the two elastic thin plates, each stiffening plate is vertically arranged, the upper end and the lower end of each stiffening plate are respectively fixedly connected with two energy dissipation plates, the two stiffening plates on the upper side and the lower side of the X-shaped structure are horizontally arranged, and the two ends in the horizontal direction are respectively fixedly connected with the two energy dissipation plates; the four sealing plates are respectively arranged on four sides of the X-shaped structure, the four sides are not the sides where the two elastic thin plates are arranged, each sealing plate is fixedly connected with two energy dissipation plates, wherein the two sealing plates positioned on the upper side and the lower side of the X-shaped structure are horizontally arranged, two ends in the horizontal direction are respectively fixedly connected with the two energy dissipation plates, and the two sealing plates are positioned on the outer sides of the two energy dissipation plates;
the outer surface of the sealing plate is coated with an antirust coating;
the cross sections of the four stiffening plates in the direction perpendicular to the length direction of the main beam enclose a rectangular structure.
2. An earthquake-resistant device for old bridge reinforcement as claimed in claim 1, characterized in that: the energy dissipation plate is made of special metal materials or alloy materials.
3. An earthquake-resistant device for old bridge reinforcement as claimed in claim 1, characterized in that: the elastic sheet is made of steel with carbon content less than 0.25%.
4. An earthquake-resistant device for old bridge reinforcement as claimed in claim 1, characterized in that: the elastic thin plate is fixedly connected to the end part of the energy dissipation plate in a welding mode.
5. An earthquake-resistant device for old bridge reinforcement as claimed in claim 1, characterized in that: the sealing plate is fixedly connected to the end part of the energy dissipation plate in a welding mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011158650.0A CN112081022B (en) | 2020-10-26 | 2020-10-26 | Anti-seismic device for reinforcing old bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011158650.0A CN112081022B (en) | 2020-10-26 | 2020-10-26 | Anti-seismic device for reinforcing old bridge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112081022A CN112081022A (en) | 2020-12-15 |
| CN112081022B true CN112081022B (en) | 2024-07-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011158650.0A Active CN112081022B (en) | 2020-10-26 | 2020-10-26 | Anti-seismic device for reinforcing old bridge |
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| CN (1) | CN112081022B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212641244U (en) * | 2020-10-26 | 2021-03-02 | 广西交科集团有限公司 | Be used for reinforced (rfd) antidetonation device of old bridge |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208183517U (en) * | 2018-04-24 | 2018-12-04 | 济南城建集团有限公司 | Stop assembly suitable for the bridge of straight web box girder or T beam energy consumption girder falling |
| CN108824228A (en) * | 2018-08-28 | 2018-11-16 | 南京林业大学 | A kind of method of bamboo combined housing reinforced bridge pier |
| CN210341608U (en) * | 2019-07-15 | 2020-04-17 | 南京同杰桥梁工程技术有限公司 | Multistage buffering type antidetonation dog of seting up defences |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212641244U (en) * | 2020-10-26 | 2021-03-02 | 广西交科集团有限公司 | Be used for reinforced (rfd) antidetonation device of old bridge |
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| CN112081022A (en) | 2020-12-15 |
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