CN104278625A - Cantilever type damping device for simply supported girder bridge of railway - Google Patents
Cantilever type damping device for simply supported girder bridge of railway Download PDFInfo
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- CN104278625A CN104278625A CN201410534342.1A CN201410534342A CN104278625A CN 104278625 A CN104278625 A CN 104278625A CN 201410534342 A CN201410534342 A CN 201410534342A CN 104278625 A CN104278625 A CN 104278625A
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- Prior art keywords
- branch sleeve
- damping device
- damping
- tenon
- oscillating bearing
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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
- E01D19/04—Bearings; Hinges
- E01D19/041—Elastomeric bearings
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- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention belongs to the technical field of bridge damping and provides a cantilever type damping device for a simply supported girder bridge of a railway. The cantilever type damping device comprises a damping tenon (13) and a connecting sleeve (2) fixedly connected at the bottom of a beam body (1), the upper end of the damping tenon (13) is connected with a knuckle bearing (10), and the outer circumference of the outer ring of the knuckle ring (10) is a cylindrical surface matched with the inner wall of the connecting sleeve (2); the knuckle bearing (10) is arranged in the connecting sleeve (2), the outer circumference of the knuckle spring (10) is in slide fit with the inner wall of the connecting sleeve (2); a beam embedding component (8) connected with the connecting sleeve is embedded in the beam body (1), and pier embedding components (12) connected with the damping tenon are embedded in a pier (6). By the cantilever type damping device, contact stress of the force transmission sleeve and the knuckle bearing is reduced, and service life of the damping device is prolonged.
Description
Technical field
The invention belongs to Bridge Seismic technical field, be specifically related to a kind of Simple Supported Railway Bridges beam type damping device.
Background technology
Simple Supported Railway Bridges adopts one end fixed bearing usually, other end longitudinally-moving type bearing articulated beam body and bridge pier; In order to beam body is passed to the load of bridge pier when reducing earthquake, prevents bridge pier from destroying, usually damping device is set at beam body and bridge pier point of attachment.
As shown in Figure 1, the patent No. is that ZL200920258541.9 proposes " a kind of Simple Supported Railway Bridges beam type damping tenon structure ", and this patent is a kind of damping device for Simple Supported Railway Bridges; Damping device is made up of branch sleeve 2, ball-shaped power transmission bulb 3, damping tenon top active section 4, transition seal ring 5, damping tenon lower anchor section 7; Branch sleeve 2 is formed by cylindrical tube and steel plate consolidation, and branch sleeve 2 is cemented in bottom beam body; Ball-shaped power transmission bulb 2 is cemented in active section 4 upper end, damping tenon bar top, with branch sleeve cylinder shape inner wall for being slidably matched, can move along branch sleeve inwall axis direction; Damping tenon top active section 4 is variable cross-section rotary structure; Damping tenon lower anchor section 7 connects firmly in bridge pier 6; There is in bridge pier 6 upper surface the conical tank of collar damping tenon, there is transition seal ring 5 in conical tank.
Bridge normal operation state: the corner of the vertical load that beam body transmits and beam body still by with damping device with the use of multidirectional active type bearing realize, the beam body deformability that beam body produces due to variations in temperature is realized by damping tenon.The relative level that beam body has the variations in temperature of about 3mm to produce relative to bridge pier moves.Beam body and the branch sleeve synchronizing moving with beam body consolidation; Branch sleeve drives ball-shaped power transmission bulb to move horizontally, and relatively rotates and along the Relative sliding of branch sleeve inwall axis between branch sleeve and ball-shaped power transmission bulb simultaneously; Active section lower end, damping tenon top consolidation, upper end produces horizontal distortion, and damping tenon top active section is in elastic deformation.
Bridge is in earthquake state: damping tenon top active section is in elastoplasticity duty, by the plastic strain absorption portion seismic energy of damping tenon top active section; There is larger horizontal distortion in active section upper end, damping tenon top, the horizontal rigidity of damping tenon device reduces, and reduces the horizontal load that beam body is passed to bridge pier.
Damping tenon is changed after the earthquake: releasing branch sleeve connects with beam body, cuts the concrete around pier top damping tenon lower anchor section, takes out damping tenon device; Heavy fresh processed damping tenon device is put into pier top indentation, there, at damping tenon lower anchor section circumfusion concrete, consolidation branch sleeve and beam body.
Due between ball-shaped power transmission bulb 3 with branch sleeve 2 inwall for line---face contact, above-mentioned damping tenon device when the horizontal load transmitted by beam body, between ball-shaped power transmission bulb 3 and branch sleeve 2 contact site due to stress concentrated, contact stress is larger; The Relative sliding along power transmission sleeve axis occurred between ball-shaped power transmission bulb and branch sleeve in addition all will occur every day, and because contact stress is comparatively large, the unfavorable phenomenon such as abrasion, corrosion easily occurs at two component contact positions; Changing the difficulty of construction of damping tenon greatly after the earthquake, long construction period in addition.
Summary of the invention
For solving the problems of the technologies described above, the object of the invention is to propose a kind of Simple Supported Railway Bridges beam type damping device.
The present invention adopts following technical scheme for completing above-mentioned purpose:
A kind of Simple Supported Railway Bridges beam type damping device, described damping device is arranged between fine strain of millet body and bridge pier; Described damping device includes damping tenon and branch sleeve; Described branch sleeve connects firmly the bottom at fine strain of millet body; The upper end of described damping tenon is connected with oscillating bearing, and described oscillating bearing is made up of with the outer ring with Internal Spherical Surface the inner ring with spherical outside surface; The periphery of described oscillating bearing outer ring is the face of cylinder coordinated with the internal face of branch sleeve; Described oscillating bearing is positioned at described branch sleeve, and the internal face of the periphery of oscillating bearing and described branch sleeve is slidably matched, make bridge when normal operation state and earthquake state, fine strain of millet body drive branch sleeve moves horizontally, branch sleeve drives oscillating bearing to move horizontally, and makes damping tenon generation elastic deformation; Damping tenon after elastic deformation makes oscillating bearing, branch sleeve along cylinder lumen axis Relative sliding, and oscillating bearing and branch sleeve be relatively rotated, along the radial transmitted load of cylinder lumen; The beam body fastener inserts in order to be connected with branch sleeve is embedded with in described fine strain of millet body; Be embedded with in order to the bridge pier fastener inserts with damping feather joint in described bridge pier; Described damping device is connected with fine strain of millet body by branch sleeve, beam body fastener inserts; Described damping device is connected with bridge pier by damping tenon, bridge pier fastener inserts.
Described damping tenon has the variable cross-section revolving body in flaring footpath from top to bottom; The bottom of described damping tenon has the flange in order to be connected with bridge pier.
Described bridge pier fastener inserts is made up of steel plate and the many cylindrical tube shape rod members be welded on bottom steel plate.
Described beam body fastener inserts is made up of steel plate and the many cylindrical tube shape rod members be welded on bottom steel plate.
Described branch sleeve includes cylindrical barrel and tabular steel plate; Described cylindrical barrel is positioned at the bottom of tabular steel plate; Described tabular steel plate has multiple installing hole in order to install connecting bolt.
A kind of Simple Supported Railway Bridges beam type damping device that the present invention proposes, the upper end of damping tenon is coordinated with branch sleeve by oscillating bearing, the periphery of oscillating bearing and the internal face of branch sleeve are slidably matched, make can to occur between oscillating bearing and branch sleeve along branch sleeve axis Relative sliding and relatively rotate, reduce the contact stress of power transmission sleeve and oscillating bearing; Improve the application life of damping device, when the present invention changes, the connecting bolt that branch sleeve connects with beam body is removed, falls branch sleeve; The connecting bolt that flange connects with pier top pre-embedded device is removed, damping device active section and branch sleeve are taken out; Branch sleeve is inserted in the damping device active section of replacing; By damping tenon device and branch sleeve in place; Connecting bolt is adopted to connect branch sleeve and beam body pre-embedded device; Adopt connecting bolt connecting flange and bridge pier device, namely replaceable operation, has operating expenses few, the feature of short construction period, and construction period is less than 1 day.
Accompanying drawing explanation
Fig. 1 is the structural representation of Simple Supported Railway Bridges beam type damping device in prior art.
Fig. 2 is the structural representation of invention.
In figure: 1, Liang Ti, 2, branch sleeve, 3, ball-shaped power transmission bulb, 4, damping tenon top active section, 5, transition seal ring, 6, bridge pier, 7, damping tenon lower anchor section, 8, fine strain of millet body fastener inserts, 9, beam body connecting bolt, 10, oscillating bearing, 11, flange bolt, 12, bridge pier fastener inserts, 13, damping tenon.
Detailed description of the invention
With specific embodiment, the present invention is illustrated by reference to the accompanying drawings, but the present invention is not limited to the present embodiment.
As shown in Figure 2, a kind of Simple Supported Railway Bridges beam type damping device, described damping device is arranged between fine strain of millet body 1 and bridge pier 6; Described damping device includes damping tenon 13 and branch sleeve 2; Described branch sleeve 2 is associated in the bottom of fine strain of millet body 1; Described branch sleeve 2 includes cylindrical barrel and tabular steel plate; Described cylindrical barrel is positioned at the bottom of tabular steel plate; Described tabular steel plate has multiple installing hole in order to install connecting bolt; Described damping tenon 13 has the variable cross-section revolving body in flaring footpath from top to bottom; The top of described damping tenon has the cylinder being nested with oscillating bearing; The bottom of described damping tenon has the flange in order to be connected with bridge pier; Described oscillating bearing 10 be nested be fixed on damping tenon 13 upper end cylinder on; Described oscillating bearing 10 is made up of with the outer ring with Internal Spherical Surface the inner ring with spherical outside surface; The periphery of described oscillating bearing 10 outer ring is the face of cylinder coordinated with the internal face of branch sleeve 2; Described oscillating bearing 10 is positioned at described branch sleeve 2, and the internal face of the periphery of oscillating bearing 10 and described branch sleeve 2 is slidably matched, oscillating bearing, branch sleeve along cylinder lumen axis Relative sliding and can be relatively rotated, along the radial transmitted load of cylinder lumen; The beam body fastener inserts 8 in order to be connected with branch sleeve is embedded with in described fine strain of millet body 1; Described beam body fastener inserts 8 is made up of steel plate and the many cylindrical tube shape rod members be welded on bottom steel plate; Be embedded with in described bridge pier 6 in order to the bridge pier fastener inserts 12 with damping feather joint; Described bridge pier fastener inserts 12 is made up of steel plate and the many cylindrical tube shape rod members be welded on bottom steel plate; For high-strength bolt, by pretightning force, branch sleeve 2 and beam body fastener inserts 3 are linked together; Beam body connecting bolt 8 is connected with the beam body fastener inserts 8 in fine strain of millet body 1 through the installing hole on branch sleeve tabular steel plate, branch sleeve 2 and fine strain of millet body 1 is fixedly connected; Flange bolt 11 is connected with the bridge pier fastener inserts 12 in bridge pier 6 through the installation sky on damping tenon upper flange plate, damping tenon 2 and bridge pier 1 is fixedly connected.
Bridge normal operation state: the corner of the vertical load that beam body transmits and beam body still by with damping device with the use of multidirectional active type bearing realize, the beam body deformability that beam body produces due to variations in temperature is realized by the present invention; The relative level that beam body has the variations in temperature of about 3mm to produce relative to bridge pier moves; Beam body 1 and branch sleeve 2 synchronizing moving with beam body consolidation; Branch sleeve 2 drives oscillating bearing 7 to move horizontally; There is elastic deformation in damping tenon 4; After there is elastic deformation in damping tenon 4, center line of the bar becomes curve from straight line, rod end reduces to the distance of bridge pier 6, make the Relative sliding occurred between branch sleeve 2 and oscillating bearing 7 along branch sleeve inwall axis, simultaneously because the end of damping tenon 4 rotates due to horizontal distortion, oscillating bearing 7 and branch sleeve 2 are relatively rotated; Branch sleeve 2 inwall is that face---face contacts with oscillating bearing 7 outer wall; The load that branch sleeve 2 transmits is passed to the upper end of damping tenon 4 by oscillating bearing 7; Damping tenon 4 upper end produces horizontal distortion, and the variable cross-section section of damping tenon 4 is in elastic deformation.
Bridge is in earthquake state: damping tenon 4 variable cross-section section is in elastic-plastic behavior, by the plastic strain absorption portion seismic energy of variable cross-section section; There is larger horizontal distortion in damping tenon 4 upper end, the horizontal rigidity of damping device reduces, and reduces the horizontal load that beam body is passed to bridge pier.
Damping device is changed: beam body connecting bolt 8 and flange bolt 11 are screwed out, branch sleeve 2 and damping tenon 4 are taken out, heavy fresh processed damping tenon 4 flange bolt 11 is connected with bridge pier fastener inserts 12, branch sleeve 2 beam body connecting bolt 9 is connected 8 with beam body fastener inserts; Namely complete replacing operation after above operation completes, operating expenses is few, short construction period, is no more than 1 day and can completes replacing operation.
Claims (5)
1. a Simple Supported Railway Bridges beam type damping device, described damping device is arranged between fine strain of millet body (1) and bridge pier (6); Described damping device includes damping tenon (13) and branch sleeve (2); Described branch sleeve (2) connects firmly the bottom in fine strain of millet body (1); It is characterized in that: the upper end of described damping tenon (13) is connected with oscillating bearing (10), described oscillating bearing (10) is made up of with the outer ring with Internal Spherical Surface the inner ring with spherical outside surface; The periphery of described oscillating bearing (10) outer ring is the face of cylinder coordinated with the internal face of branch sleeve (2); Described oscillating bearing (10) is positioned at described branch sleeve (2), and the internal face of the periphery of oscillating bearing (10) and described branch sleeve (2) is slidably matched, make bridge when normal operation state and earthquake state, fine strain of millet body drive branch sleeve moves horizontally, branch sleeve drives oscillating bearing to move horizontally, and makes damping tenon generation elastic deformation; Damping tenon after elastic deformation makes oscillating bearing, branch sleeve along cylinder lumen axis Relative sliding, and oscillating bearing and branch sleeve be relatively rotated, along the radial transmitted load of cylinder lumen; The beam body fastener inserts (8) in order to be connected with branch sleeve is embedded with in described fine strain of millet body (1); Be embedded with in described bridge pier (6) in order to the bridge pier fastener inserts (12) with damping feather joint; Described damping device is connected with fine strain of millet body (1) by branch sleeve (2), beam body fastener inserts (8); Described damping device is connected with bridge pier (6) by damping tenon (13), bridge pier fastener inserts (12).
2. a kind of Simple Supported Railway Bridges beam type damping device according to claim 1, is characterized in that: described damping tenon (13) has the variable cross-section revolving body in flaring footpath from top to bottom; The bottom of described damping tenon has the flange in order to be connected with bridge pier.
3. a kind of Simple Supported Railway Bridges beam type damping device according to claim 1, is characterized in that: described bridge pier fastener inserts (12) is made up of steel plate and the many cylindrical tube shape rod members be welded on bottom steel plate.
4. a kind of Simple Supported Railway Bridges beam type damping device according to claim 1, is characterized in that: described beam body fastener inserts (8) is made up of steel plate and the many cylindrical tube shape rod members be welded on bottom steel plate.
5. a kind of Simple Supported Railway Bridges beam type damping device according to claim 1, is characterized in that: described branch sleeve (2) includes cylindrical barrel and tabular steel plate; Described cylindrical barrel is positioned at the bottom of tabular steel plate; Described tabular steel plate has multiple installing hole in order to install connecting bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410534342.1A CN104278625B (en) | 2014-10-13 | 2014-10-13 | A kind of Simple Supported Railway Bridges beam type damping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410534342.1A CN104278625B (en) | 2014-10-13 | 2014-10-13 | A kind of Simple Supported Railway Bridges beam type damping device |
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| CN104278625A true CN104278625A (en) | 2015-01-14 |
| CN104278625B CN104278625B (en) | 2016-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410534342.1A Active CN104278625B (en) | 2014-10-13 | 2014-10-13 | A kind of Simple Supported Railway Bridges beam type damping device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104652252A (en) * | 2015-02-12 | 2015-05-27 | 中铁二院工程集团有限责任公司 | Bridge damping blocking tenon device |
| CN105236315A (en) * | 2015-10-30 | 2016-01-13 | 巨力索具股份有限公司 | Lifting tool with self-adaptive deflection rotation function |
| CN107974923A (en) * | 2017-12-13 | 2018-05-01 | 中铁二院昆明勘察设计研究院有限责任公司 | A kind of Near-source earthquake active type three-dimensional damping device |
| CN111173192A (en) * | 2020-01-06 | 2020-05-19 | 山东建筑大学 | Large-span variable cross-section beam |
| CN113152256A (en) * | 2021-05-06 | 2021-07-23 | 中南大学 | Assembled pre-compaction ball pivot type damping device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08284114A (en) * | 1995-04-18 | 1996-10-29 | Kajima Corp | Response control device for bridge |
| JP2002309801A (en) * | 2001-04-13 | 2002-10-23 | Nippon Steel Corp | Energy absorption device |
| JP2003184031A (en) * | 2001-09-28 | 2003-07-03 | Kiyoshi Karasuno | Lead damper |
| CN201627139U (en) * | 2009-11-27 | 2010-11-10 | 洛阳双瑞特种装备有限公司 | Cantilever-beam type shock-absorbing tenon structure for railway simply supported beam bridge |
| CN201778280U (en) * | 2010-09-20 | 2011-03-30 | 成都市新筑路桥机械股份有限公司 | Fixing shock absorption buckling tenon for bridges |
-
2014
- 2014-10-13 CN CN201410534342.1A patent/CN104278625B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08284114A (en) * | 1995-04-18 | 1996-10-29 | Kajima Corp | Response control device for bridge |
| JP2002309801A (en) * | 2001-04-13 | 2002-10-23 | Nippon Steel Corp | Energy absorption device |
| JP2003184031A (en) * | 2001-09-28 | 2003-07-03 | Kiyoshi Karasuno | Lead damper |
| CN201627139U (en) * | 2009-11-27 | 2010-11-10 | 洛阳双瑞特种装备有限公司 | Cantilever-beam type shock-absorbing tenon structure for railway simply supported beam bridge |
| CN201778280U (en) * | 2010-09-20 | 2011-03-30 | 成都市新筑路桥机械股份有限公司 | Fixing shock absorption buckling tenon for bridges |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104652252A (en) * | 2015-02-12 | 2015-05-27 | 中铁二院工程集团有限责任公司 | Bridge damping blocking tenon device |
| CN105236315A (en) * | 2015-10-30 | 2016-01-13 | 巨力索具股份有限公司 | Lifting tool with self-adaptive deflection rotation function |
| CN105236315B (en) * | 2015-10-30 | 2019-06-25 | 巨力索具股份有限公司 | A kind of suspender with adaptive beat rotation function |
| CN107974923A (en) * | 2017-12-13 | 2018-05-01 | 中铁二院昆明勘察设计研究院有限责任公司 | A kind of Near-source earthquake active type three-dimensional damping device |
| CN107974923B (en) * | 2017-12-13 | 2023-11-17 | 中铁二院昆明勘察设计研究院有限责任公司 | Movable three-way damping device for near-field earthquake |
| CN111173192A (en) * | 2020-01-06 | 2020-05-19 | 山东建筑大学 | Large-span variable cross-section beam |
| CN113152256A (en) * | 2021-05-06 | 2021-07-23 | 中南大学 | Assembled pre-compaction ball pivot type damping device |
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| Publication number | Publication date |
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| CN104278625B (en) | 2016-06-29 |
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Address after: 471000, Binhe Road, hi tech Development Zone, Henan, Luoyang, 32 Patentee after: CSSC Shuangrui (Luoyang) special equipment Co.,Ltd. Address before: 471000, Binhe Road, hi tech Development Zone, Henan, Luoyang, 32 Patentee before: LUOYANG SUNRUI SPECIAL EQUIPMENT Co.,Ltd. |
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