CN102286946A - Constant strength elastic-plastic shock absorption stop block - Google Patents
Constant strength elastic-plastic shock absorption stop block Download PDFInfo
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- CN102286946A CN102286946A CN2011102614201A CN201110261420A CN102286946A CN 102286946 A CN102286946 A CN 102286946A CN 2011102614201 A CN2011102614201 A CN 2011102614201A CN 201110261420 A CN201110261420 A CN 201110261420A CN 102286946 A CN102286946 A CN 102286946A
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- shaped steel
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- top plate
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Abstract
The invention discloses a constant strength elastic-plastic shock absorption stop block comprising at least one X-shaped steel plate, a top plate, top plate stiffening ribs, a bottom plate and pull rods, wherein the X-shaped steel plate is arranged between the top plate and the bottom plate; the top plate stiffening ribs are arranged at two sides of the top plate; the pull rods are arranged on the top plate stiffening ribs at two sides of the top plate; and when a plurality of X-shaped steel plates are arranged between the top plate and the bottom plate, the X-shaped steel plates are longitudinally and parallelly arranged along the top plate according to a same spacing. When the stop blocks are arranged at two sides of a bridge body, the seismic force of a bridge in transverse direction can be more reasonably distributed; and the stop block disclosed by the invention has the advantages of simpleness in material getting and easiness in manufacturing and has a certain economy and practicality.
Description
Technical field
The invention belongs to the bridge security field, relate to a kind of structure that ensures the bridge superstructure quake-resistant safety, especially a kind of have equicohesive elastoplasticity shock-absorption dog.
Background technology
The beam that falls of bridge superstructure is the one of the main reasons that bridge collapses under the geological process.The existing vertical bridge of the earthquake disaster of bridge to the beam that falls, the beam and caving in of falling of direction across bridge is also arranged.Nineteen ninety-five Japan the big earthquakes in Osaka and Kobe, the destruction of many bridge piers in the viaduct since the lateral seismic effect cause.Under severe earthquake action, the direction across bridge inertia force major part of bridge superstructure is delivered to bridge pier and basis thereof by block.Therefore, the lateral seismic force that is delivered to bridge pier or abutment is to control by the ability of block, that is to say ability control direction across bridge bridge pier or the destruction of abutment and the beam that falls of direction across bridge of block.
Ordinary reinforced concrete, steel shoe, steel pin nail block do not possess the elastoplasticity energy dissipation capacity, when seismic forces surpasses the intensity of steel concrete block flexible block, and block generation brittle fracture, girder no longer is subjected to the constraint of block.And for equal strength elastoplasticity shock-absorption dog, when seismic forces reaches the yield strength of its X-shaped steel plate, elastic-plastic deformation, dissipation seismic energy also take place in the surrender of X-shaped steel plate.Produce bigger relative displacement simultaneously between girder and the bridge pier, reduced the rigidity of direction across bridge, thereby reduced the seismic forces of direction across bridge.
Summary of the invention
The object of the present invention is to provide a kind of equal strength elastoplasticity shock-absorption dog, satisfy the normal instructions for use under the non-earthquake conditions, the direction across bridge under the geological process subtracts the shock insulation requirement, with solve existing block under geological process, can not dissipate seismic energy, reduce the problem of geological process.
For reaching above purpose, solution of the present invention is:
A kind of equal strength elastoplasticity shock-absorption dog, it comprises X-shaped steel plate, top board, top board stiffening rib, base plate and pull bar, and the X-shaped steel plate is arranged between top board and the base plate, and the both sides of top board are provided with the top board stiffening rib, and pull bar is located on the top board stiffening rib of top board both sides.
Further, described X-shaped steel plate is at least one.
Described X-shaped steel plate is more than two, and the X-shaped steel plate is to arrange along the top board parallel longitudinal according to identical spacing.
Adopt between described X-shaped steel plate and top board and the base plate and be welded to connect.
Owing to adopted such scheme, the present invention to have following characteristics: the present invention can effectively disperse the direction across bridge seismic forces, thus the safety of bridge can guarantee earthquake the time; And it is of the present invention simple in structure, easy to make.
Description of drawings
Fig. 1 is an elastoplasticity block schematic diagram.
Fig. 2 is an elastoplasticity block elevation.
Fig. 3 is power consumption steel plate schematic diagram.
Number in the figure: 1 is the case beam, and 2 is top board, and 3 is the top board stiffening rib, and 4 is the X-shaped steel plate, and 5 is base plate, and 6 is position of opening, and 7 is bent cap, and 8 is pull bar.
The specific embodiment
The present invention is further illustrated below in conjunction with the accompanying drawing illustrated embodiment.
As Figure 1-3, equal strength elastoplasticity shock-absorption dog of the present invention, its structure comprises X-shaped steel plate 4, top board 2, top board stiffening rib 3, base plate 5 and pull bar 8.Several X-shaped steel plates 4 are arranged between top board 2 and the base plate 5, and its top is connected with top board 2 by welding, and the bottom is connected with base plate 5 by welding.The quantity n of X-shaped steel plate 4 can depend on the needs as the case may be, and preferred n gets 1-99, and evenly distributes, and promptly X-shaped steel plate 4 is arranged along the top board parallel longitudinal according to identical distance.The both sides of top board 2 are provided with top board stiffening rib 3.Pull bar 8 is located on the top board stiffening rib 3 of top board 2 both sides.
The mounting method of equal strength elastoplasticity shock-absorption dog: when the design of beam body, manufacturing, need reserve the waist hole 6 that pull bar 8 can pass through, and guarantee that waist hole 6 is of convenient length, and is unlikely to influence the distortion of beam body.When Bridge Pier design, manufacturing, need the pre-buried bolt that is connected with block base plate 5.After Bridge Pier and beam body construction finished, block base plate 5 was bolted to pier top, beam side side (block respectively being set in the both sides of beam body) by pre-buried, is connected with the bent cap 7 or the abutment of its below.Simultaneously pull bar 8 is passed the beam body by waist hole 6, and two blocks of both sides are coupled together, the side of top board stiffening rib 3 props up the external side of beam, tightens the bolt of cylinder lever connecting rod 8 and top board stiffening rib 3, installs and finishes.
Thereby top board 2 can drive X-shaped steel plate 4 and lateral movement takes place girder together,
Top board stiffening rib 3 can be strengthened the bending rigidity of top board 2 on the one hand, can guarantee that together girder has identical lateral displacement with elastoplasticity shock-absorption dog of the present invention with pull bar 8 on the other hand, to avoid that disengaging and collision take place between elastoplasticity block and the girder.X-shaped steel plate 4 can play the effect of damping power consumption by the equal strength elasto bending distortion of self.
Under geological process, when the seismic forces of direction across bridge surpasses the yield strength of equal strength elastoplasticity shock-absorption dog, the X-shaped steel plate of block will be surrendered, and the X-shaped steel plate after the surrender presents plastoelastic hysteretic characteristic, the seismic energy that can dissipate, thus the earthquake response of direction across bridge reduced.
The direction across bridge seismic forces of Bridge Pier distributes according to its rigidity, and the direction across bridge seismic forces that the pier that rigidity is big more is subjected to is big more.Because the rigidity of equal strength elastoplasticity shock-absorption dog is much smaller than the lateral rigidity of Bridge Pier, so identical equal strength elastoplasticity shock-absorption dog is set above the different pier of rigidity, then the lateral rigidity of each pier is more approaching, and the direction across bridge seismic forces is able to more reasonably distribute.
The present invention draws materials simply, makes easily, has certain economic and practicality, will be applied to the bridge earthquake resistance field widely.And the present invention has obtained the subsidy of the bullets (2009BAG15B01) of western science and technology item (200731882233) of Ministry of Communications and national science and technology supporting plan.
The above-mentioned description to embodiment is can understand and apply the invention for ease of those skilled in the art.The person skilled in the art obviously can easily make various modifications to these embodiment, and needn't pass through performing creative labour being applied in the General Principle of this explanation among other embodiment.Therefore, the invention is not restricted to the embodiment here, those skilled in the art are according to announcement of the present invention, and not breaking away from the improvement that category of the present invention makes and revise all should be within protection scope of the present invention.
Claims (4)
1. equal strength elastoplasticity shock-absorption dog, it is characterized in that: it comprises X-shaped steel plate, top board, top board stiffening rib, base plate and pull bar, the X-shaped steel plate is arranged between top board and the base plate, and the both sides of top board are provided with the top board stiffening rib, and pull bar is located on the top board stiffening rib of top board both sides.
2. equal strength elastoplasticity shock-absorption dog as claimed in claim 1 is characterized in that: described X-shaped steel plate is at least one.
3. equal strength elastoplasticity shock-absorption dog as claimed in claim 2 is characterized in that: described X-shaped steel plate is more than two, and the X-shaped steel plate is to arrange along the top board parallel longitudinal according to identical spacing.
4. equal strength elastoplasticity shock-absorption dog as claimed in claim 1 is characterized in that: adopt between described X-shaped steel plate and top board and the base plate to be welded to connect.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN2011102614201A CN102286946A (en) | 2011-09-06 | 2011-09-06 | Constant strength elastic-plastic shock absorption stop block |
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CN2011102614201A CN102286946A (en) | 2011-09-06 | 2011-09-06 | Constant strength elastic-plastic shock absorption stop block |
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CN2011102614201A Pending CN102286946A (en) | 2011-09-06 | 2011-09-06 | Constant strength elastic-plastic shock absorption stop block |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102953327B (en) * | 2012-11-15 | 2015-11-04 | 同济大学 | Be applicable to the lateral shock absorption damper of bridge construction |
CN112227183A (en) * | 2020-10-22 | 2021-01-15 | 株洲时代新材料科技股份有限公司 | Urban bridge antidumping composite limiting device |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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KR20030021822A (en) * | 2001-09-08 | 2003-03-15 | 주식회사 탑스코 | A Guard Rail manufactured with steel and composition resin for bridge its method |
CN2763375Y (en) * | 2004-12-30 | 2006-03-08 | 北京工业大学 | Composite lead energy dissipation device with built-in steel board |
CN201280688Y (en) * | 2008-10-24 | 2009-07-29 | 北京市市政工程设计研究总院 | Antivibration and beam anti-falling device at top of bridge pier stud |
CN102061666A (en) * | 2010-12-14 | 2011-05-18 | 广州大学 | Special earthquake isolation and damping support seat for railways and bridges |
-
2011
- 2011-09-06 CN CN2011102614201A patent/CN102286946A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20030021822A (en) * | 2001-09-08 | 2003-03-15 | 주식회사 탑스코 | A Guard Rail manufactured with steel and composition resin for bridge its method |
CN2763375Y (en) * | 2004-12-30 | 2006-03-08 | 北京工业大学 | Composite lead energy dissipation device with built-in steel board |
CN201280688Y (en) * | 2008-10-24 | 2009-07-29 | 北京市市政工程设计研究总院 | Antivibration and beam anti-falling device at top of bridge pier stud |
CN102061666A (en) * | 2010-12-14 | 2011-05-18 | 广州大学 | Special earthquake isolation and damping support seat for railways and bridges |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102953327B (en) * | 2012-11-15 | 2015-11-04 | 同济大学 | Be applicable to the lateral shock absorption damper of bridge construction |
CN112227183A (en) * | 2020-10-22 | 2021-01-15 | 株洲时代新材料科技股份有限公司 | Urban bridge antidumping composite limiting device |
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Application publication date: 20111221 |