CN211446565U - Shock-absorbing structure based on bridge pad stone - Google Patents
Shock-absorbing structure based on bridge pad stone Download PDFInfo
- Publication number
- CN211446565U CN211446565U CN201922479778.6U CN201922479778U CN211446565U CN 211446565 U CN211446565 U CN 211446565U CN 201922479778 U CN201922479778 U CN 201922479778U CN 211446565 U CN211446565 U CN 211446565U
- Authority
- CN
- China
- Prior art keywords
- bridge
- connecting shaft
- girder
- stone
- bolster
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The utility model discloses a shock attenuation structure based on bridge base stone, set up the base stone that is used for supporting the girder support at bent cap both ends including the symmetry, still including setting up the last fixed part in the girder bottom, set up the lower fixed part around each base stone to and a shock attenuation portion of resetting, the shock attenuation portion of resetting both ends link to each other with lower fixed part, and the center links to each other with last fixed part, is used for the bridge shock attenuation and makes the girder that takes place transverse displacement to reset. The utility model discloses simple structure, low in cost, construction are swift, the maintenance is changed conveniently, not only can restrict the girder and take place lateral displacement, can make the girder independently reset moreover, have effectively improved bridge life, have ensured the current safety of people's car, have good engineering application prospect.
Description
Technical Field
The utility model belongs to the technical field of the bridge antidetonation shock attenuation technique and specifically relates to a shock attenuation structure based on bridge stone.
Background
With the development of highway bridge technology, the requirement on bridge shock absorption is higher and higher, and particularly in areas with frequent earthquakes, the bridge shock absorption is very important. When the earthquake takes place, if do not have sufficient antidetonation or shock-absorbing measure, great lateral displacement will take place for upper portion girder receives the damage, has the roof beam risk of falling when serious, directly threatens the driving safety of vehicle on the bridge. The existing bridge damping structure is mainly considered from the aspect of restraining the transverse displacement of the main beam, and can only restrain the transverse displacement of the main beam to a certain extent; once earthquake happens, the main beam cannot recover to the original position after being transversely displaced, and certain influence is caused on the subsequent use of the bridge. To some extent, the bridge with the displaced main girder is a bridge with potential safety hazard.
Disclosure of Invention
The utility model provides a shock attenuation structure based on bridge padstone, aim at solve current bridge shock attenuation structure and only can restrict the girder and take place lateral displacement and can not make the girder problem that independently resets.
In order to achieve the above purpose, the utility model can adopt the following technical proposal:
shock attenuation structure based on bridge stone, set up the stone pad that is used for supporting the girder support at bent cap both ends including the symmetry, still include:
the upper fixing part is arranged at the bottom of the main beam;
a pair of lower fixing portions disposed around each of the spacers;
and the two ends of the damping resetting part are connected with the lower fixing part, and the center of the damping resetting part is connected with the upper fixing part and is used for damping the bridge and resetting the girder which generates the transverse displacement.
The upper fixing part comprises a connecting shaft arranged along the longitudinal bridge direction, and the connecting shaft is connected with the main beam through a pre-buried lug plate;
the lower fixing part comprises a hoop fastened around the cushion stone, and a plurality of limiting fixing pieces are arranged on the outer side of the hoop;
the damping reset part is a working rope with a ring sleeve arranged at the center, the ring sleeve is arranged on the connecting shaft in a penetrating mode, and two ends of the working rope are fixedly connected with one side, just opposite to the connecting shaft, of the ring sleeve respectively.
The ring sleeve is formed by winding the connecting shaft by a working rope, and the ring sleeve and the connecting shaft are arranged in a sliding mode.
The hoop and the working rope are both made of steel wire ropes, steel stranded wires or elastic fiber ropes.
The connecting shaft is arranged in the through hole of the embedded ear plate in a rolling penetrating mode.
The limiting fixing piece is an L-shaped steel piece which is buckled on the outer side of the hoop and two ends of the limiting fixing piece are respectively embedded on the base stone and the cover beam.
The working ropes are multiple and are arranged side by side along the longitudinal bridge direction.
The adjacent embedded ear plates are multiple and are arranged in a staggered mode with the ring sleeves.
The end part of the connecting shaft is provided with an anti-drop ring.
The utility model provides a shock attenuation structure based on bridge base stone need not to change the original structure atress system of bridge, only need set up the mounting on girder and base stone, can conveniently install the work rope between girder and base stone, when the circumstances such as earthquake take place, the work rope retrains the lateral displacement of girder through tensile deformation, play the cushioning effect, reduce the roof beam risk that falls of girder, and then make the girder resume original position through the recovery deformability of the rope body. The utility model discloses simple structure, low in cost, construction are swift, the maintenance is changed conveniently, not only can restrict the girder and take place lateral displacement, can make the girder independently reset moreover, have effectively improved bridge life, have ensured the current safety of people's car, have good engineering application prospect.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a view from a-a in fig. 1.
Detailed Description
The embodiments of the present invention will be described in detail with reference to the accompanying drawings, and the embodiments of the present invention are based on the technical solutions of the present invention and are described in detail, but the present invention is not limited to the following embodiments.
Shock attenuation structure based on bridge base stone, install on girder and bent cap both ends support the base stone of girder support, it includes one goes up fixed part, a pair of lower fixed part and a shock attenuation portion of resetting, above-mentioned shock attenuation portion of resetting is connected at last fixed part and between the lower fixed part.
Specifically, as shown in fig. 1 and 2, the upper fixing portion includes seven embedded ear plates 1.1 located at the bottom of the main beam M, the thickness of each embedded ear plate 1.1 is 1-2 cm, the embedded ear plates 1.1 are embedded into the main beam M bottom plate portion by 10-20 cm and welded to the steel bars of the main beam M bottom plate to ensure the anchoring performance of the embedded ear plates 1.1 in the main beam M, the embedded ear plates 1.1 extend out of the main beam M bottom plate by 10-20 cm, the embedded ear plates 1.1 are arranged side by side at intervals by 5-20 cm, the embedded ear plates 1.1 extend out of the main beam M portion and are provided with mounting holes with diameters of 5.5-10.5 cm, a steel connecting shaft 1.2 arranged along the longitudinal bridge direction penetrates through the mounting holes at the lower portion of the embedded ear plates, the connecting shaft 1.2 is a cylinder, the section diameter is 5-10 cm and is about 0.5cm smaller than the mounting holes, so that the connecting shaft 1.2 can roll in the. In order to prevent the connecting shaft 1.2 from longitudinally separating from the embedded ear plates 1.1, anti-falling rings 1.3 are arranged outside the embedded ear plates 1.1 at two ends of the connecting shaft 1.2, the anti-falling rings 1.3 are nuts or circular rings matched with the connecting shaft 1.2 and are connected with the connecting shaft 1.2 through screwing the nuts or welding, and in order to ensure that the connecting shaft 1.2 can roll in the mounting holes, the anti-falling rings 1.3 and the embedded ear plates 1.1 at two ends have a distance of about 1-2 cm.
The lower fixing part comprises annular hoops 2.1 made of steel wire ropes, steel strands or elastic fiber ropes, and each hoop 2.1 is tightly sleeved around the cushion stone N and is in a tight state; in order to prevent the annular hoop 2.1 from shifting, a plurality of L-shaped steel products 2.2 are arranged on the outer side of the hoop 2.1, the L-shaped steel products 2.2 are one of section steel or twisted steel, the thickness of the section steel is not less than 5mm, and the diameter of the twisted steel is not less than 16 mm. In this embodiment, 12L-shaped steel members 2.2 are disposed around each of the two base stones N and uniformly distributed on four sides of the base stone N. The end part of each L-shaped steel part 2.2 is pre-embedded in the pad stone N and the bent cap R respectively, and the pre-embedded length is not less than 10cm, so that the restraint of the L-shaped steel parts 2.2 on the hoop 2.1 is guaranteed, and the hoop 2.1 cannot be separated from the pad stone N.
The shock attenuation portion that resets includes six parallel arrangement and is in the work rope 3.1 of slight state of tightening, and every work rope 3.1 middle part is all through winding 1~2 circles on connecting axle 1.2 and form ring cover 3.2, and both ends are twined respectively and are fixed on the cuff 2.1 of both sides bed stone to work rope 3.1 and cuff 2.1 can not take place relative displacement, it needs to point out that work rope 3.1 all connects in cuff 2.1 just to one side (being the bed stone N inboard) of connecting axle 1.2. The working rope 3.1 adopts a steel wire rope, a steel strand or an elastic fiber rope with elastic recovery capability; each ring sleeve 3.2 is positioned between two adjacent embedded ear plates 1.1 and has a distance of 2-8 cm with the embedded ear plates 1.1 at two sides, so that the ring sleeves 3.2 can longitudinally slide relative to the connecting shaft 1.2.
When the main beam M is not displaced and is in a balanced state, the working rope 3.1 is in a slightly tightened state, and at the moment, the total length of the working rope is minimum; when the main beam M transversely displaces, the embedded lug plates 1.1 and the connecting shaft 1.2 transversely displace along with the main beam M, and the working rope 3.1 is connected to the connecting shaft 1.2 through the central ring sleeve 3.2, so that the central ring sleeve 3.2 rotates around the connecting shaft 1.2, the total length of the working rope 3.1 is increased, the two sides of the working rope 3.1 are stretched, the transverse displacement of the main beam M is restrained, a damping effect is achieved, and the beam falling risk of the main beam M is reduced; meanwhile, due to the elastic recovery capability of the working rope 3.1, the working rope 3.1 can urge the main beam M to transversely move in the opposite direction, so that the main beam M is recovered to the original position. In the process, the utility model discloses consumed seismic energy, played the cushioning effect conscientiously.
Because the central ring sleeve 3.2 of the working rope 3.1 is wound on the connecting shaft 1.2, when the girder M has small longitudinal displacement (smaller than the distance between the ring sleeve 3.2 and the embedded ear plate 1.1), the working rope 3.1 can slide in the longitudinal direction of the bridge, and the earthquake energy is consumed by the friction force between the ring sleeve 3.2 and the connecting shaft 1.2; when the girder M has larger longitudinal displacement (larger than the distance between the ring sleeve 3.2 and the embedded lug plate 1.1), the ring sleeve 3.2 is tightly attached to the embedded lug plate 1.1, so that the total length of the working rope 3.1 is increased, two sides of the working rope 3.1 are stretched, the longitudinal displacement of the girder M is restrained, the damping effect is achieved, and the girder falling risk of the girder M is reduced; meanwhile, due to the elastic recovery capability of the working rope 3.1, the working rope 3.1 can urge the main beam M to longitudinally move in the opposite direction, so that the main beam M is recovered to the original position. In the process, the utility model discloses consumed seismic energy, played the cushioning effect conscientiously.
Because the working rope 3.1 is fixed on the base stone hoop 2.1, when the working rope 3.1 is pulled, the base stone N is in a two-way pressed state and a plane sheared state, but simultaneously, because the base stone N is also subjected to downward pressure transmitted by the upper main beam M through the support, the local shearing resistance of the base stone can be improved, and the stability and the safety of the whole bridge structure are kept.
Claims (9)
1. The utility model provides a shock attenuation structure based on bridge stone, sets up the stone pad that is used for supporting the girder support at bent cap both ends including the symmetry, its characterized in that: further comprising:
the upper fixing part is arranged at the bottom of the main beam;
a pair of lower fixing portions disposed around each of the spacers;
and the two ends of the damping resetting part are connected with the lower fixing part, and the center of the damping resetting part is connected with the upper fixing part and is used for damping the bridge and resetting the girder which generates the transverse displacement.
2. The bridge bolster-based damping construction of claim 1, wherein:
the upper fixing part comprises a connecting shaft arranged along the longitudinal bridge direction, and the connecting shaft is connected with the main beam through a pre-buried lug plate;
the lower fixing part comprises a hoop fastened around the cushion stone, and a plurality of limiting fixing pieces are arranged on the outer side of the hoop;
the damping reset part is a working rope with a ring sleeve arranged at the center, the ring sleeve is arranged on the connecting shaft in a penetrating mode, and two ends of the working rope are fixedly connected with one side, just opposite to the connecting shaft, of the ring sleeve respectively.
3. The bridge bolster-based damping construction of claim 2, wherein: the ring sleeve is formed by winding the connecting shaft by a working rope, and the ring sleeve and the connecting shaft are arranged in a sliding mode.
4. The bridge bolster-based damping construction of claim 2, wherein: the hoop and the working rope are both made of steel wire ropes, steel stranded wires or elastic fiber ropes.
5. The bridge bolster-based damping construction of claim 2, wherein: the connecting shaft is arranged in the through hole of the embedded ear plate in a rolling penetrating mode.
6. The bridge bolster-based damping construction of claim 2, wherein: the limiting fixing piece is an L-shaped steel piece which is buckled on the outer side of the hoop and two ends of the limiting fixing piece are respectively embedded on the base stone and the cover beam.
7. The bridge bolster-based damping construction of claim 2, wherein: the working ropes are multiple and are arranged side by side along the longitudinal bridge direction.
8. The bridge bolster-based damping construction of claim 7, wherein: the adjacent embedded ear plates are multiple and are arranged in a staggered mode with the ring sleeves.
9. The bridge bolster-based damping construction of claim 2, wherein: the end part of the connecting shaft is provided with an anti-drop ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922479778.6U CN211446565U (en) | 2019-12-31 | 2019-12-31 | Shock-absorbing structure based on bridge pad stone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922479778.6U CN211446565U (en) | 2019-12-31 | 2019-12-31 | Shock-absorbing structure based on bridge pad stone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211446565U true CN211446565U (en) | 2020-09-08 |
Family
ID=72314922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922479778.6U Active CN211446565U (en) | 2019-12-31 | 2019-12-31 | Shock-absorbing structure based on bridge pad stone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211446565U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110847015A (en) * | 2019-12-31 | 2020-02-28 | 河南省交通规划设计研究院股份有限公司 | Shock-absorbing structure based on bridge pad stone |
-
2019
- 2019-12-31 CN CN201922479778.6U patent/CN211446565U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110847015A (en) * | 2019-12-31 | 2020-02-28 | 河南省交通规划设计研究院股份有限公司 | Shock-absorbing structure based on bridge pad stone |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101390176B1 (en) | Tension type fix apparatus of wire lope for rockslide preventing net and constructing method of rockslide preventing net using this | |
| CN211446565U (en) | Shock-absorbing structure based on bridge pad stone | |
| JP6518849B1 (en) | Guard fence | |
| CN107503283A (en) | Buffering energy-consumption type chain bridge anti-fall girder apparatus and its construction method | |
| CN106567325A (en) | Combined type anti-falling beam and collision device | |
| KR20120083874A (en) | Rockfall protection fence for distributing and absorbing impect energy | |
| CN203320402U (en) | Inhaul cable type friction pendulum shock reduction and insulation support | |
| CN210216131U (en) | Bridge anti-falling beam device and anti-falling beam support | |
| CN107974926B (en) | Self-balancing bridge damping device that resets | |
| CN202787060U (en) | Shock absorption support seat with backstay cables easy to replace | |
| CN110847015A (en) | Shock-absorbing structure based on bridge pad stone | |
| CN211472136U (en) | Pulley type bridge damping structure | |
| KR20110130077A (en) | Rockfall protection fence for distributing and absorbing impect energy | |
| CN111255489B (en) | Anti-seismic and fracture-resistant primary support structure for cross-active fault tunnel | |
| CN104452594B (en) | Many fulcrums dragline method changes rope device | |
| CN211446566U (en) | Single-pulley type bridge damping structure | |
| CN215518335U (en) | Buffer type annular damping shock absorption device | |
| CN203295968U (en) | Replaceable inhaul cable shock absorbing supporting base easy to adjust | |
| CN207149985U (en) | 35kV and following outdoor equipment maintenance safety belt supporting frame | |
| CN113374286B (en) | Recyclable air defense falling net | |
| CN110847017B (en) | Single pulley type bridge shock absorbing structure | |
| CN110965458B (en) | Planar gear type bridge damping structure | |
| CN211472135U (en) | Plane gear type bridge damping structure | |
| CN213144505U (en) | Anti-collapse device for anchor rod | |
| CN110894706B (en) | Pulley type bridge damping structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |