CN102304893A - Piston-type bridge buffer protection method and device and manufacture method - Google Patents
Piston-type bridge buffer protection method and device and manufacture method Download PDFInfo
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- CN102304893A CN102304893A CN201110183789A CN201110183789A CN102304893A CN 102304893 A CN102304893 A CN 102304893A CN 201110183789 A CN201110183789 A CN 201110183789A CN 201110183789 A CN201110183789 A CN 201110183789A CN 102304893 A CN102304893 A CN 102304893A
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Abstract
The invention discloses a piston-type bridge buffer protection method and device and a manufacture method. The piston-type bridge buffer protection device is installed on a bridge abutment on the two ends of the bridge. The piston-type bridge buffer protection device is in a single-piston structure; a piston is positioned in a piston cylinder; in the piston cylinder, two sides of the piston are respectively provided with multiple layers of elastic anti-vibration pads; each layer of elastic anti-vibration pad has different elasticity coefficients; two ends of the piston cylinder are provided with piston cylinder covers; a piston rod passes through one piston cylinder to extend out of the piston cylinder and is directly connected with a bridge support directly by an ear loop; and the piston cylinder cover on the other end of the piston cylinder is installed on the bridge abutment. The device is in simple assembling structure, all construction members are all produced by factories, and the device is simple to manufacture and has low price. The device is convenient to carry out daily maintenance, only the position and the state of the piston need to be detected in the fixed time, and the risks that damping fluid leaks and fails and the like can be avoided.
Description
Technical field
The present invention relates to a kind of guard method and device and preparation method of bridge, relate to a kind of buffer protection method and device and preparation method of bridge level overload specifically, this device can cushion and protect bridge construction when bridge bears moment impact.
Background technology
The bridge buffer protection device is applied in the abutment at bridge two ends, is used for limiting bridge in the horizontal movement along the bridge direction, and under the normal condition, this device can expanding with heat and contract with cold and be free to slide with bridge.When emergency case; The horizontal loading that bridge receives impacts; And its impact force surpasses predetermined design; After the bridge pad constraint is invalid; This moment, this impact force promoted the bridge buffer protection device, slowed down the impact of external force to bridge, and the restriction bridge slides; Thereby prevent bridge because of dropping from bridge pier to the excessive beam body that causes of horizontal movement, reach the purpose of protection bridge along bridge.
The bridge buffer protection device that uses at present is viscous damper, and viscous damper is a kind of no rigidity, velocity correlation type damper, cost an arm and a leg, and troublesome maintenance, and damping fluid takes place easily reveal and cause the damper inefficacy.Therefore a kind of price of necessary implementation is lower, safeguards simple bridge buffer protection device.
It like number of patent application 201010293529 Chinese patent; A kind of bridge buffering viscous damper is disclosed; This kind buffering viscous damper also mainly is to cushion through the fluid damping medium, therefore exists above-mentioned damping fluid to reveal the problem that causes damper to lose efficacy equally.
Summary of the invention
Goal of the invention of the present invention is to provide a kind of cost lower, and is low to the environment for use requirement, novel bridge buffer protection method and device easy to maintenance.
For solving the problems of the technologies described above; The technical scheme that the present invention proposes is: a kind of piston type bridge buffer protection method; Piston type bridge buffer protection device is installed on the abutment at bridge two ends; Described piston type bridge buffer protection device is single piston structure; Piston is positioned at piston rod; In piston rod, the both sides of piston are respectively equipped with the multilayer elastic cushion blocking, and the coefficient of elasticity of the elastic damping pad of each layer is different; Piston cylinder cover is equipped with at the two ends of piston rod, and piston rod passes one of them piston cylinder cover and stretches out outside the piston rod, directly is connected with bridge pad through earrings; The piston cylinder cover of the piston rod other end is installed on the abutment.
Under the normal condition, the piston of piston type bridge buffer protection device can be with the expanding with heat and contract with cold and be free to slide of bridge in piston rod, and piston can not contact the high-damping rubber element when being free to slide.When emergency case; The horizontal loading that bridge receives impacts; And when its impact force surpasses predetermined design; After the bridge pad constraint is invalid; This impact force will promote piston extruding high-damping rubber element this moment; Produce constraint reaction behind the high-damping rubber element pressurized; Slow down the impact of external force to bridge; Because the deformation space of high-damping rubber element is limited; When piston extruding high-damping rubber element reached certain displacement, deformation can not take place in high-damping rubber element again, and bridge can not slide again; Thereby prevent bridge because of dropping from bridge pier to the excessive beam body that causes of horizontal movement, reach the purpose of protection bridge along bridge.
According to the piston type bridge buffer protection device that said method proposed, be single piston structure, comprise left end cap, fairlead, piston rod, piston, high-damping rubber element, piston rod, right end cap; Piston is positioned at piston rod, and in piston rod, the both sides of piston are respectively equipped with the multilayer elastic cushion blocking, and the coefficient of elasticity of the elastic damping pad of each layer is different; Piston cylinder cover is equipped with at the two ends of piston rod, and piston rod passes one of them piston cylinder cover and stretches out outside the piston rod, directly is connected with bridge pad through earrings; The piston cylinder cover of the piston rod other end is installed on the abutment.
When outside try hard to recommend or when spurring piston; Piston moves freely certain distance in cylinder body after; Begin to push the high-damping rubber element; The high-damping rubber element carries out damping at the cylinder body of the confined space; Deformation takes place simultaneously; When Piston Compression high-damping rubber element reached certain displacement, deformation no longer took place in the high-damping rubber element, and the parts that bear external force this moment all are transferred to cylinder body.
The preparation method that this piston type bridge buffering dress protection is put is:
At first according to operating mode design high-damping rubber element, the axial compression rigidity of high-damping rubber element design is K
v, the high-damping rubber component profile is of a size of Φ A1 * h, and the piston rod diameter of bore is Φ A2, and when piston was subjected to external force extruding high-damping rubber element, high-damping rubber element pressurized produced a counter-force F, and compression displacement is S, then counter-force F
F=K
v×S
S
max=A1×h/?A2
In displacement is 0-S
MaxIn the scope, the high-damping rubber element plays the effect of buffer protection.When displacement reaches S
MaxAfter, F sharply increases, and external force is passed to abutment through this device, by abutment protection bridge.
Can there be problems such as leakage, contaminated environment in this device because of damping material is a high-damping rubber, and is non-maintaining, simultaneously because the high-damping rubber element under the protection of piston rod, longer service life, and manufacturing cost has only 1/4～1/3 of conventional viscous damper.
Actual effect:Be no more than in external force under the situation of certain certain value (design load), this device can play cushioning effect through inner high-damping rubber element, when external force surpasses this certain value, is born by bridge itself.Since the use of this device be adopted as common iron and high-damping rubber material, not high to environment requirement, pollution-free to environment simultaneously yet.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Among the figure: 1, piston rod; 2, fairlead; 3, left end cap; 4, piston/cylinder; 5, the high-damping rubber element one; 6, piston; 7, the high-damping rubber element two; 8, mandrel; 9, securing member; 10, right end cap.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is done further description.
Can find out from accompanying drawing; The present invention relates to a kind of piston type bridge buffer protection method; Piston type bridge buffer protection device is installed on the abutment at bridge two ends; Described piston type bridge buffer protection device is single piston structure; Piston is positioned at piston rod; In piston rod, the both sides of piston are respectively equipped with the multilayer elastic cushion blocking, and the coefficient of elasticity of the elastic damping pad of each layer is different; Piston cylinder cover is equipped with at the two ends of piston rod, and piston rod passes one of them piston cylinder cover and stretches out outside the piston rod, directly is connected with bridge pad through earrings; The piston cylinder cover of the piston rod other end is installed on the abutment.
Under the normal condition, the piston of piston type bridge buffer protection device can be with the expanding with heat and contract with cold and be free to slide of bridge in piston rod, and piston can not contact the high-damping rubber element when being free to slide.When emergency case; The horizontal loading that bridge receives impacts; And when its impact force surpasses predetermined design; After the bridge pad constraint is invalid; This impact force will promote piston extruding high-damping rubber element this moment; Produce constraint reaction behind the high-damping rubber element pressurized; Slow down the impact of external force to bridge; Because the deformation space of high-damping rubber element is limited; When piston extruding high-damping rubber element reached certain displacement, deformation can not take place in high-damping rubber element again, and bridge can not slide again; Thereby prevent bridge because of dropping from bridge pier to the excessive beam body that causes of horizontal movement, reach the purpose of protection bridge along bridge.
According to the piston type bridge buffer protection device that said method proposed, be single piston structure, comprise left end cap 3, fairlead 2, piston rod 1, piston 6, high-damping rubber element 5 and 7, piston rod 4, right end cap 10; Piston is positioned at piston rod, and in piston rod 4, the both sides of piston 6 are respectively equipped with high-damping rubber element 5 and 7, and high-damping rubber element 5 and 7 is separately fixed on left end cap 3 and the right end cap 10 through securing member 9; High-damping rubber element 5 and 7 is the multilayer elastic cushion blocking, and the coefficient of elasticity of the elastic damping pad of each layer is different; Left end cap 3 and right end cap 10 are equipped with in the two ends of piston rod 4, and piston rod 1 passes one of them piston cylinder cover and stretches out outside the piston rod 4, directly is connected with bridge pad through earrings; The piston cylinder cover of piston rod 4 other ends is installed on the abutment.The center of high-damping rubber element 7 passing the another side of one of them piston cylinder cover with piston rod 1 is inserted with a mandrel, and the height of mandrel is lower than the thickness of high-damping rubber element 7.
When outside try hard to recommend or when spurring piston; Piston moves freely certain distance in cylinder body after; Begin to push the high-damping rubber element; The high-damping rubber element carries out damping at the cylinder body of the confined space; Deformation takes place simultaneously; When Piston Compression high-damping rubber element reached certain displacement, deformation no longer took place in the high-damping rubber element, and the parts that bear external force this moment all are transferred to cylinder body.
The preparation method that this piston type bridge buffering dress protection is put is: at first according to operating mode design high-damping rubber element, the axial compression rigidity of high-damping rubber element design is K
v, the high-damping rubber component profile is of a size of Φ A1 * h, and the piston rod diameter of bore is Φ A2, and when piston was subjected to external force extruding high-damping rubber element, high-damping rubber element pressurized produced a counter-force F, and compression displacement is S, then counter-force F;
F=K
v×S
S
max=A1×h/?A2
In displacement is 0-S
MaxIn the scope, the high-damping rubber element plays the effect of buffer protection.When displacement reaches S
MaxAfter, F sharply increases, and external force is passed to abutment through this device, by abutment protection bridge.
Can there be problems such as leakage, contaminated environment in this device because of damping material is a high-damping rubber, and is non-maintaining, simultaneously because the high-damping rubber element under the protection of piston rod, longer service life, and manufacturing cost has only 1/4～1/3 of conventional viscous damper.
Embodiment one:
Can find out that from accompanying drawing 1 the present invention relates to a kind of bridge buffer protection device structure, piston can move around under the promotion of piston rod, the high-damping rubber element bears compressive strain, cylinder body restriction high-damping rubber deformed element amount.High-damping rubber element in the cylinder body is that steel plate and the sulfuration of rubber lamination form.When bridge takes place along bridge when mobile; Produce load F, drive piston rod and move, at this moment; Piston rod is unrestricted moving; When piston rod moves to certain displacement, during piston contact high-damping rubber element, the high-damping rubber element begins to produce counter-force; When the high-damping rubber element is compressed into certain displacement; Counter-force sharply increases, and this moment, piston type bridge buffer protection device approached rigidity, limited being moved further of bridge.
The preparation method that the protection of piston type bridge buffering dress is put is: high-damping rubber component structure and size are confirmed by the size of design external force; Thickness is confirmed with the buffering stroke according to the displacement of buffer protection device; Inner reinforcement steel plate materials is Q235, and elastomeric material is a high-damping rubber.
The endoporus of piston/cylinder is confirmed that by the diameter of high-damping rubber element length is confirmed according to the free travel of piston.The material of piston/cylinder can use 45.
The big young pathbreaker of piston rod calculates according to the design level external force of bridge and confirms.Materials available 40Cr, need quenched to 28 ~ 32HRC, chrome plated, plated roughness Ra ≤ 1.6
.
Fairlead and left end cap are interference fit (k7/H8), with piston be matched in clearance (f6/H8).
After assembling was accomplished, piston rod was with the not gap of 0.05～0.15mm with guiding; Piston need be positioned at how much centre positions of piston/cylinder.
Claims (10)
1. piston type bridge buffer protection method; It is characterized in that: piston type bridge buffer protection device is installed on the abutment at bridge two ends; Described piston type bridge buffer protection device is single piston structure; Piston is positioned at piston rod; In piston rod; The both sides of piston are respectively equipped with the multilayer elastic cushion blocking, and the coefficient of elasticity of the elastic damping pad of each layer is different; Piston cylinder cover is equipped with at the two ends of piston rod, and piston rod passes one of them piston cylinder cover and stretches out outside the piston rod, directly is connected with bridge pad through earrings; The piston cylinder cover of the piston rod other end is installed on the abutment.
2. piston type bridge buffer protection method according to claim 1; It is characterized in that: under the normal condition; The piston of piston type bridge buffer protection device can be with the expanding with heat and contract with cold and be free to slide of bridge in piston rod, and piston can not contact the high-damping rubber element when being free to slide;
When emergency case; The horizontal loading that bridge receives impacts; And when its impact force surpasses predetermined design; After the bridge pad constraint is invalid; This impact force will promote piston extruding high-damping rubber element this moment; Produce constraint reaction behind the high-damping rubber element pressurized; Slow down the impact of external force to bridge; Because the deformation space of high-damping rubber element is limited; When piston extruding high-damping rubber element reached certain displacement, deformation can not take place in high-damping rubber element again, and bridge can not slide again; Thereby prevent bridge because of dropping from bridge pier to the excessive beam body that causes of horizontal movement, reach the purpose of protection bridge along bridge.
3. piston type bridge buffer protection device according to the said piston type bridge of claim 1 buffer protection method; It is characterized in that: piston type bridge buffer protection device is single piston structure, comprises left end cap, fairlead, piston rod, piston, high-damping rubber element, piston rod, right end cap; Piston is positioned at piston rod, and in piston rod, the both sides of piston are respectively equipped with the high-damping rubber element, and the high-damping rubber element is separately fixed on left end cap and the right end cap through securing member; Left end cap and right end cap are equipped with in the two ends of piston rod, and piston rod passes one of them piston cylinder cover and stretches out outside the piston rod, directly are connected with bridge pad through earrings; The piston cylinder cover of the piston rod other end is installed on the abutment.
4. piston type bridge buffer protection device according to claim 3 is characterized in that: the high-damping rubber element is the multilayer elastic cushion blocking, and the coefficient of elasticity of the elastic damping pad of each layer is different.
5. piston type bridge buffer protection device according to claim 4; It is characterized in that: the center of high-damping rubber element passing the another side of one of them piston cylinder cover with piston rod is inserted with a mandrel, and the height of mandrel is lower than the thickness of high-damping rubber element.
6. preparation method according to the said piston type bridge of claim 3 buffer protection device, it is characterized in that: piston can move around under the promotion of piston rod, and the high-damping rubber element bears compressive strain, cylinder body restriction high-damping rubber deformed element amount.
7. preparation method according to the said piston type bridge of claim 3 buffer protection device is characterized in that: the high-damping rubber element in the cylinder body is that steel plate vulcanizes with the rubber lamination and forms.
8. preparation method according to the said piston type bridge of claim 3 buffer protection device is characterized in that: at first according to operating mode design high-damping rubber element, the axial compression rigidity of high-damping rubber element design is K
v, the high-damping rubber component profile is of a size of Φ A1 * h, and the piston rod diameter of bore is Φ A2, and when piston was subjected to external force extruding high-damping rubber element, high-damping rubber element pressurized produced a counter-force F, and compression displacement is S, then counter-force F
F=K
v×S
S
max=A1×h/?A2
In displacement is 0-S
MaxIn the scope, the high-damping rubber element plays the effect of buffer protection;
When displacement reaches S
MaxAfter, F sharply increases, and external force is passed to abutment through this device, by abutment protection bridge.
9. the preparation method of piston type bridge buffer protection device according to claim 8; It is characterized in that: high-damping rubber component structure and size are confirmed by the size of design external force; Thickness is confirmed with the buffering stroke according to the displacement of buffer protection device; Inner reinforcement steel plate materials is Q235, and elastomeric material is a high-damping rubber.
10. the preparation method of piston type bridge buffer protection device according to claim 8 is characterized in that: the endoporus of piston/cylinder is confirmed that by the diameter of high-damping rubber element length is confirmed according to the free travel of piston;
The material of piston/cylinder can use 45; The big young pathbreaker of piston rod calculates according to the design level external force of bridge and confirms;
Materials available 40Cr, need quenched to 28 ~ 32HRC, chrome plated, plated roughness Ra ≤ 1.6
; guide sleeve and the left cover for the interference fit (k7/H8), and the piston clearance fit (f6/H8 ); assembly is completed, the piston rod and the guide sleeve has no 0.05 ~ 0.15mm gap; piston geometry to be positioned in the middle of the cylinder piston position.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110183789 CN102304893B (en) | 2011-07-01 | 2011-07-01 | Piston-type bridge buffer protection method and device and manufacture method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110183789 CN102304893B (en) | 2011-07-01 | 2011-07-01 | Piston-type bridge buffer protection method and device and manufacture method |
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|---|---|
| CN102304893A true CN102304893A (en) | 2012-01-04 |
| CN102304893B CN102304893B (en) | 2013-08-21 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966031A (en) * | 2012-08-22 | 2013-03-13 | 成都亚佳工程新技术开发有限公司 | Piston-type tension and compression limiter |
| CN104612042A (en) * | 2013-12-05 | 2015-05-13 | 深圳市市政设计研究院有限公司 | Anti-collision connecting device for bridge |
| CN107165300A (en) * | 2017-06-21 | 2017-09-15 | 北京工业大学 | A kind of diamond shaped openings H profile steel damper of anti-out-of-plane buckling |
| CN108016581A (en) * | 2017-12-27 | 2018-05-11 | 湖南大学 | A kind of active connector |
| CN111022556A (en) * | 2019-11-21 | 2020-04-17 | 河海大学 | Variable-rigidity extrusion energy dissipation shock absorber |
| CN113308982A (en) * | 2021-06-17 | 2021-08-27 | 郑州大学 | Damping device for assembled bridge pier column |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2318850A (en) * | 1996-10-28 | 1998-05-06 | Oleo International Limited | Damper |
| CN2505512Y (en) * | 2001-10-12 | 2002-08-14 | 陈光和 | Shallow slot bridge expansion device |
| KR100371695B1 (en) * | 1994-07-29 | 2003-04-21 | 프레이시네트 엥테르나시오날(에스테유페) | External force buffer device for civil engineering |
| CN201116364Y (en) * | 2007-09-30 | 2008-09-17 | 刘名君 | Railway slag-free orbit bridge end extending flexing device |
| CN201202089Y (en) * | 2008-05-28 | 2009-03-04 | 中交公路规划设计院有限公司 | Position limiter for liquid viscous damper for bridge |
| CN202064272U (en) * | 2011-05-16 | 2011-12-07 | 西安建筑科技大学 | Bridge damping extensible device |
-
2011
- 2011-07-01 CN CN 201110183789 patent/CN102304893B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100371695B1 (en) * | 1994-07-29 | 2003-04-21 | 프레이시네트 엥테르나시오날(에스테유페) | External force buffer device for civil engineering |
| GB2318850A (en) * | 1996-10-28 | 1998-05-06 | Oleo International Limited | Damper |
| CN2505512Y (en) * | 2001-10-12 | 2002-08-14 | 陈光和 | Shallow slot bridge expansion device |
| CN201116364Y (en) * | 2007-09-30 | 2008-09-17 | 刘名君 | Railway slag-free orbit bridge end extending flexing device |
| CN201202089Y (en) * | 2008-05-28 | 2009-03-04 | 中交公路规划设计院有限公司 | Position limiter for liquid viscous damper for bridge |
| CN202064272U (en) * | 2011-05-16 | 2011-12-07 | 西安建筑科技大学 | Bridge damping extensible device |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966031A (en) * | 2012-08-22 | 2013-03-13 | 成都亚佳工程新技术开发有限公司 | Piston-type tension and compression limiter |
| CN104612042A (en) * | 2013-12-05 | 2015-05-13 | 深圳市市政设计研究院有限公司 | Anti-collision connecting device for bridge |
| CN104612042B (en) * | 2013-12-05 | 2018-06-26 | 深圳市市政设计研究院有限公司 | A kind of anticollision attachment device for bridge |
| CN107165300A (en) * | 2017-06-21 | 2017-09-15 | 北京工业大学 | A kind of diamond shaped openings H profile steel damper of anti-out-of-plane buckling |
| CN107165300B (en) * | 2017-06-21 | 2019-06-21 | 北京工业大学 | A kind of diamond shaped openings H profile steel damper of anti-out-of-plane buckling |
| CN108016581A (en) * | 2017-12-27 | 2018-05-11 | 湖南大学 | A kind of active connector |
| CN111022556A (en) * | 2019-11-21 | 2020-04-17 | 河海大学 | Variable-rigidity extrusion energy dissipation shock absorber |
| CN111022556B (en) * | 2019-11-21 | 2021-05-11 | 河海大学 | Variable-rigidity extrusion energy dissipation shock absorber |
| CN113308982A (en) * | 2021-06-17 | 2021-08-27 | 郑州大学 | Damping device for assembled bridge pier column |
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