CN202519577U - Bridge cable earthquake-reducing limiter - Google Patents

Bridge cable earthquake-reducing limiter Download PDF

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Publication number
CN202519577U
CN202519577U CN2011205347496U CN201120534749U CN202519577U CN 202519577 U CN202519577 U CN 202519577U CN 2011205347496 U CN2011205347496 U CN 2011205347496U CN 201120534749 U CN201120534749 U CN 201120534749U CN 202519577 U CN202519577 U CN 202519577U
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CN
China
Prior art keywords
steel plate
drag
line
fixed
bolt
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.)
Expired - Lifetime
Application number
CN2011205347496U
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Chinese (zh)
Inventor
钟剑
荣肇骏
袁万城
朱峰
胡薇
庞于涛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JIANGSU WANBAO BRIDGE MEMBER CO Ltd
Tongji University
Original Assignee
JIANGSU WANBAO BRIDGE MEMBER CO Ltd
Tongji University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by JIANGSU WANBAO BRIDGE MEMBER CO Ltd, Tongji University filed Critical JIANGSU WANBAO BRIDGE MEMBER CO Ltd
Priority to CN2011205347496U priority Critical patent/CN202519577U/en
Application granted granted Critical
Publication of CN202519577U publication Critical patent/CN202519577U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model relates to a bridge cable earthquake-reducing limiter. The limiter consists of an upper steel plate, a lower steel plate, bolt holes, one or more cables and bolts, wherein one end of each cable is fixed at the bottom or on the side of the upper steel plate through a bolt and a bolt hole, and the other end of each cable is fixed on the top or the side of the lower steel plate through a bolt and a bolt hole; the upper steel plate is fixed on a beam; and the lower steel plate is fixed on the top of a bridge pier. A plurality of elastic cables are arranged at each pier and beam joint, and the important parameters (such as rigidity and free path length) of the cables are needed to be calculated and designed; the cables are arranged at each pier and beam joint; one end of each cable is fixed on the beam through the steel plate, and the other end of each cable is fixed on the top of the bridge pier through the steel plate; each bridge pier can be stressed under the earthquake action, and internal force for fixing each pier is reduced; and the relative displacement of the piers and the beams is effectively limited, and the beams are prevented from falling.

Description

Bridge cable damping stop
Technical field
The utility model belongs to civil engineering, earthquake engineering technical field, is specifically related to a kind of bridge cable damping stop.
Background technology
In recent decades, vibration absorption and isolation support subtracts the important measures of shock insulation as bridge, has obtained increasing attention, and has obtained great development.The isolation design that subtracts of bridge comprises and reduces seismic forces and reduce the displacement under the earthquake.
Pot rubber bearing, lead core rubber support, FPS (friction pendulum hammer body system) have progressively obtained using widely, and become the main flow of domestic and abroad bridge bearing.In several kinds of vibration absorption and isolation supports, pot rubber bearing is when meeting with earthquake or great vibratility and impact, and the horizontal movement between the upper and lower seat board can not get efficient buffer, and support displacement is excessive; The lead core rubber support energy dissipation capacity is strong; The order of seats internal force that temperature, the deformation of creep such as creep cause is less; But the cutting performance of bearing receives the influence of vertical load bigger; And along with the increase of lead for retractable pencil, the bearing automatic recovery ability weakens gradually, can not in the earthquake motion with multiple spectra effect, effectively subtract shock insulation; Strong, the friction energy-dissipating stable performance of the automatic recovery ability of FPS (friction pendulum hammer body system), but in the process of friction energy-dissipating, can cause the vertical displacement of beam-ends and produce time internal force.
But some above-mentioned vibration absorption and isolation supports all do not prevent to produce excessive displacement, even the ability of the beam that falls.For this reason, be the displacement that prevents that structure is excessive, some bearing places all are provided with block, prevent the danger of falling stop beam.
But, if the superstructure of bridge and block bump, can produce very big impact force, can produce very big destruction to pier stud, and wayward; Block generally can only limit lateral displacement prevent the horizontal beam that falls.In the restriction of some displacements, be not suitable for installing the large-tonnage vibration absorption and isolation support simultaneously owing to the space.Therefore be necessary stopping means is further improved, reach the over-large displacement that can limit structure under the earthquake, can not produce the effect of very big seismic forces again.
Summary of the invention
The purpose of the utility model is to provide a kind of not only can reduce structural response under geological process, and can limit the relative displacement of girder and pier stud effectively, arrives the purpose bridge cable damping stop of anti-falling stop beam.
The bridge cable damping stop that the utility model proposes; Form by upper steel plate 1, lower steel plate 2, bolt hole 3, drag-line 4 and bolt 5; Wherein: drag-line 4 one ends are fixed in the bottom or the side of upper steel plate 1 through bolt 5 and bolt hole 3, and the other end is fixed in the top or the side of lower steel plate 2 through bolt 5 and bolt hole 3; Said drag-line 4 is one or more, is determined on a case-by-case basis, and the bottom of upper steel plate 1 is fixed on the beam, and the bridge pier top is fixed at the top of lower steel plate 2.
In the utility model, said drag-line adopts the elasticity drag-line, and the important parameter of this drag-line need pass through calculation Design.
In the utility model, said upper steel plate 1 and lower steel plate 2 be in rectangle, square or the circle any.
In the utility model, said drag-line 4 adopts the acute angle circular arc to contact with upper steel plate 1 or lower steel plate 2 junctions as far as possible, avoids causing big wearing and tearing.
In the utility model, said drag-line 4 adopts high-strength alloy, carbon fiber or other forms of elastomeric material.
In the utility model, under normal operating condition, be in relaxed state, drag-line does not play a role.Lax length (this paper is called free path length) also need be carried out parameter designing according to various structure.
Under geological process, the drag-line of each Dun Liang junction all is tightened up, and each bridge pier synergy is resisted earthquake jointly, thereby reduced the seismic response of anchor block like this.
Because the relative displacement of Dun Liang is only relevant with the elastic elongation amount of the free path length of drag-line and drag-line, and the elastic elongation amount is relevant with the rigidity of drag-line.So carry out reasonable parameter design (rigidity and the free path length that comprise drag-line), make drag-line under geological process, do not broken, the relative displacement of Dun Liang just can well be controlled.
The advantage of the technical scheme that the utility model provides:
device is simple; Easy to operate; Low price; Applied widely, can be used with any common bearing or vibration absorption and isolation support, applicability is stronger; Compare with plain inhaul cable damping support saddle, the advantage of this patent has simply, and is convenient, do not need the large-tonnage bearing.
2. play a role at the geological process downhaul, be in extended state, make each bridge pier fellowship stressed, reduce the internal force of anchor block.
3. connect pier and beam with drag-line, under geological process,, just can not produce very big pier beam relative displacement through the effect of drag-line.If drag-line is not broken, relative displacement can be controlled through rigidity and free path that drag-line is set.
4. because drag-line is a process of tension gradually, so in restriction girder displacement, avoided owing to collide the instant impact that produces.
bridge cable damping stop can overcome block only an acting shortcoming of direction; Can all bring into play spacing effect horizontal and vertical; Be applicable on the building of railway bridge, road bridge, urban viaduct and various large-scale suspension frame structures and so on, play limiting structure and under earthquake, produce big displacement.
Description of drawings
Fig. 1 is the horizontal enforcement package assembly diagram of the utility model.
Fig. 2 implements the package assembly diagram longitudinally for the utility model.
Fig. 3 is the utility model vertical view.
Label among the figure: 1 is upper steel plate, and 2 is lower steel plate, and 3 is bolt hole, and 4 is drag-line, and 5 is bolt.
The specific embodiment
Can be expressly understood the technical spirit and the beneficial effect of the utility model more for the auditor that the makes Patent Office especially public; The applicant general combines accompanying drawing to elaborate with the mode of embodiment below; But the description to embodiment all is not the restriction to the utility model scheme, any according to the utility model design done only for pro forma but not substantial equivalent transformation all should be regarded as the technical scheme category of the utility model.
Combine accompanying drawing to further specify the utility model through embodiment below.
Embodiment 1: like Fig. 1 Fig. 2 and shown in Figure 3, this device comprises drag-line 4, upper steel plate 1 and lower steel plate 2, and upper steel plate 1 can be connected through bolt 5 with girder, also can be that welding waits other any ways to be connected with girder.Lower steel plate 2 can be connected through bolt 5 with bridge pier, also can be that welding waits other any ways to be connected with bridge pier.Drag-line 4 adopts the elasticity drag-line, can be high-strength alloy, carbon fiber or other forms of elastomeric material.Drag-line 4 can be connected with positions such as the side of upper steel plate 1 or lower steel plate 2 or bottom surfaces.Upper steel plate 1 can be Any shape such as rectangle, square or circle with lower steel plate 2.Drag-line 4 can be one or more, can be the single face drag-line, also can be two sides or four sides drag-line.Drag-line 4 will avoid causing big wearing and tearing with the contact of acute angle circular arc with being connected as far as possible of upper steel plate 1 or lower steel plate 2.

Claims (6)

1. bridge cable damping stop; Form by upper steel plate (1), lower steel plate (2), bolt hole (3), drag-line (4) and bolt (5); It is characterized in that: drag-line (4) one ends are fixed in the bottom or the side of upper steel plate (1) through bolt (5) and bolt hole (3), and the other end is fixed in the top or the side of lower steel plate (2) through bolt (5) and bolt hole (3); Said drag-line (4) is one or more, and upper steel plate (1) is fixed on the beam, and lower steel plate (2) is fixed in the bridge pier top.
2. bridge cable damping stop according to claim 1 is characterized in that said drag-line (4) adopts the elasticity drag-line.
3. bridge cable damping stop according to claim 1, it is characterized in that said upper steel plate (1) and lower steel plate (2) in rectangle, square or the circle any.
4. bridge cable damping stop according to claim 1 is characterized in that said drag-line (4) adopts the acute angle circular arc to contact with upper steel plate (1) or lower steel plate (2) junction.
5. bridge cable damping stop according to claim 1 is characterized in that said drag-line (4) adopts high-strength alloy, carbon fiber or other forms of elastomeric material.
6. bridge cable damping stop according to claim 1, it is characterized in that said drag-line (4) in single face drag-line, two sides drag-line or the four sides drag-line any.
CN2011205347496U 2011-12-20 2011-12-20 Bridge cable earthquake-reducing limiter Expired - Lifetime CN202519577U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011205347496U CN202519577U (en) 2011-12-20 2011-12-20 Bridge cable earthquake-reducing limiter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011205347496U CN202519577U (en) 2011-12-20 2011-12-20 Bridge cable earthquake-reducing limiter

Publications (1)

Publication Number Publication Date
CN202519577U true CN202519577U (en) 2012-11-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011205347496U Expired - Lifetime CN202519577U (en) 2011-12-20 2011-12-20 Bridge cable earthquake-reducing limiter

Country Status (1)

Country Link
CN (1) CN202519577U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106087703A (en) * 2016-06-20 2016-11-09 同济大学 Multidirectional spacing and anti-twisting system
CN106930182A (en) * 2015-12-30 2017-07-07 株洲时代新材料科技股份有限公司 A kind of steel damping energy dissipation type ball shaped steel bearing
CN112900238A (en) * 2021-01-22 2021-06-04 同济大学 Device for limiting energy consumption stay rope made of mild steel

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106930182A (en) * 2015-12-30 2017-07-07 株洲时代新材料科技股份有限公司 A kind of steel damping energy dissipation type ball shaped steel bearing
CN106930182B (en) * 2015-12-30 2020-01-31 株洲时代新材料科技股份有限公司 steel damping energy-dissipation type spherical steel support
CN106087703A (en) * 2016-06-20 2016-11-09 同济大学 Multidirectional spacing and anti-twisting system
CN112900238A (en) * 2021-01-22 2021-06-04 同济大学 Device for limiting energy consumption stay rope made of mild steel

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Granted publication date: 20121107

CX01 Expiry of patent term