CN203487451U - Horizontal elastic damping system of large-span bridge - Google Patents

Horizontal elastic damping system of large-span bridge Download PDF

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Publication number
CN203487451U
CN203487451U CN201320589959.4U CN201320589959U CN203487451U CN 203487451 U CN203487451 U CN 203487451U CN 201320589959 U CN201320589959 U CN 201320589959U CN 203487451 U CN203487451 U CN 203487451U
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China
Prior art keywords
damping system
seat board
base
lower seat
horizontal
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Expired - Lifetime
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CN201320589959.4U
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Chinese (zh)
Inventor
宋辉
熊劲松
黄李骥
刘海亮
邹贻军
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Chengdu Xinzhu Road and Bridge Machinery Co Ltd
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Chengdu Xinzhu Road and Bridge Machinery Co Ltd
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Abstract

The utility model discloses a horizontal elastic damping system of a large-span bridge. The horizontal elastic damping system of the large-span bridge comprises an elastic shock absorption support and common supports which are installed between an abutment and a beam body, and the common supports are arranged at two sides of the elastic shock absorption support. The elastic shock absorption support mainly comprises an upper support plate, a middle lining plate, a lower support plate and a base, wherein the middle lining plate is assembled between the upper support plate and the lower support plate, curved-surface sliding matching surfaces are formed between the middle lining plate and the upper support plate and between the middle lining plate and the lower support plate respectively, the base is located under the lower support plate, and a vertical spring is arranged between the lower support plate and the base. The horizontal elastic damping system of the large-span bridge is simple in structure, reasonable in design, can convert the horizontal force borne by the beam body into vertical force and convert horizontal damping rigidity of the beam body into vertical damping rigidity, and prevents the horizontal displacement of the beam body from being too large, thereby effectively limiting the horizontal displacement of the bridge, playing a role in energy dissipation and shock absorption of earthquake loads, and improving the shock prevention and absorption performance of the bridge.

Description

The horizontal resiliency damping system of Longspan Bridge
Technical field
The utility model relates to a kind of shock mitigation system, particularly relates to a kind of horizontal resiliency damping system of Longspan Bridge.
Background technology
At present, for the earthquake disaster of preventing to occur, need to carry out seismic design to bridge.Direction across bridge at cable stayed bridge, girder and king-tower generally adopt wind-resistant support to restrict the relative motion of beam, tower, the Dun Ding of anchoring pier and auxiliary pier also often arranges horizontal limit devices, this inertia force that passes to pier stud in the time of can causing earthquake is excessive, so the abutment pier of cable stayed bridge and basis thereof are the weak parts of antidetonation at direction across bridge.For general cable stayed bridge; anchoring pier and auxiliary pier can allow bridge pier column to enter plastic state under severe earthquake action; and can adopt the Ductility Design method of general bridge pier to carry out seismic design, therefore, pier, the horizontal fixed form of beam are generally feasible; Yet the anchoring pier of Super Long Span Cable-stayed Bridges and auxiliary pier are often very high, as high 60 m that approach of pier of Soviet Union's Changjiang River highway bridge, ductility is less, so in seismic design, should be by selecting reasonably constraint system to reduce earthquake response.In general, for Super Long Span Cable-stayed Bridges, adopting vibration-isolating system to reduce earthquake response is a more reasonably selection, but Earthquake occurrence control displacement effectively, the quake-resistant safety of guarantee total.Super Long Span Cable-stayed Bridges adopts vibration-isolating system to reduce earthquake response internal force, is actually and reaches by the prolongation cycle.Owing to having adopted the Super Long Span Cable-stayed Bridges cycle of vibration-isolating system oversize, and the damping of self is also lower, can cause beam-ends to produce excessive earthquake displacement.Therefore, in order to control the beam-ends earthquake displacement of Super Long Span Cable-stayed Bridges, require the vertical support of setting up between tower, beam that the shortening structure cycle can be provided, can provide certain damping again.
For the super-span bridge of km level, because it mainly adopts complete floating or half floating system.At temperature, wind, carry, under the live loading such as car load, beam-ends can produce larger horizontal movement, and the horizontal movement that bridge produces under above-mentioned load action is because resetting without horizontal elastic damping system, the over-large displacement of beam-ends may cause girder and the adjacent collision across access bridge, girder fall beam and and the collision of anchoring pier etc., make total lose globality.
Therefore, to Longspan Bridge, require to provide to there is certain level rigidity, can provide elastic-restoring force again, and seismic load is played to energy-dissipating and shock-absorbing effect, improve the horizontal resiliency damping system of bridge shock resisting performance.
Utility model content
The purpose of this utility model is just to provide a kind of horizontal resiliency damping system of Longspan Bridge, can effectively limit bridge displacement, and seismic load is played to energy-dissipating and shock-absorbing effect, improve bridge shock resisting performance, thereby solve the problem that above-mentioned prior art exists completely.
The purpose of this utility model realizes by following technical proposals:
A kind of horizontal resiliency damping system of Longspan Bridge, comprise the elastic shock-absorbing support seat and the common bearing that are installed between pier and beam body, in elastic shock-absorbing support seat both sides, be provided with common bearing, described elastic shock-absorbing support seat is mainly comprised of upper base plate, middle liner plate, lower seat board and base, middle liner plate is assemblied between upper and lower seat board, and forming the curved surface face that is slidably matched with upper and lower seat board respectively, base is positioned at lower seat board below, between described lower seat board and base, Vertical Spring is set.
Further, described elastic shock-absorbing support seat is one or one group.
Further, the described curved surface face of being slidably matched is sphere slide plane or cylinder slide plane.
Further, described common bearing is spherical bearing or pot rubber bearing.
Further, described lower seat board bottom surface and base top surface correspondence are provided with boss, and Vertical Spring two ends are placed on outside boss respectively.
Further, in lower seat board both sides, be respectively provided with a guiding device, this guiding device is comprised of with the slide plate that is installed on lower seat board side the guide strip being fixed on base.
Further, in the middle of lower seat board bottom, be provided with gathering sill, on base, correspondence arranges lead, and lead and gathering sill are slidably matched.
Further, described Vertical Spring is vertically alternately socketed to form by outer toroid and interior annulus, and the fitting face between outer toroid and interior annulus is taper seat.
Further, described Vertical Spring is rubber elastomer, helical spring or metal spring.
Compared with prior art, the beneficial effects of the utility model are: simple in structure, reasonable in design, the horizontal force that beam body can be subject to is converted to vertical force, beam body horizontal damping rigidity is converted into vertical damping rigidity, avoids the horizontal movement of beam body excessive, thereby effectively limits bridge horizontal movement, and seismic load is played to energy-dissipating and shock-absorbing effect, improve bridge shock resisting performance.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment mono-;
Fig. 2 is the elevation of Fig. 1 Elastic shock mount;
Fig. 3 is the left view of Fig. 1 Elastic shock mount;
Fig. 4 is the structural representation of Vertical Spring;
Fig. 5 is the structural representation of embodiment bis-.
The specific embodiment
Below in conjunction with specific embodiments and the drawings, the utility model is further described.
As shown in Figures 1 to 4, a kind of horizontal resiliency damping system of Longspan Bridge, comprise the elastic shock-absorbing support seat 8 and the spherical bearing 9 that are installed between pier 6 and beam body 7, in elastic shock-absorbing support seat 8 both sides, a spherical bearing 9 is respectively set, described elastic shock attenuation 8 bearings are mainly by upper base plate 11, middle liner plate 12, lower seat board 13 and base 3 form, middle liner plate 12 is assemblied in, lower seat board 11, between 13, and respectively with upper, lower seat board 11, 13 form the spheres face that is slidably matched, base 3 is positioned at lower seat board 13 belows, between described lower seat board 13 and base 3, Vertical Spring 2 is set, described lower seat board 13 bottom surfaces and base 3 end face correspondences are provided with boss 1, Vertical Spring 2 two ends are placed on respectively outside boss 1.
In lower seat board 13 both sides, be respectively provided with a guiding device, this guiding device is comprised of with the slide plate 10 that is installed on lower seat board 13 sides the guide strip 5 being fixed on base 3.
Described Vertical Spring 2 is vertically alternately socketed to form by outer toroid 21 and interior annulus 22, and the fitting face between outer toroid 21 and interior annulus 22 is taper seat.
Described Vertical Spring 2 also can be selected rubber elastomer, helical spring or metal spring.
Described elastic shock-absorbing support seat 8 can be one, also can be one group.In the middle of above-mentioned, between liner plate 12 and upper and lower seat board 11,13, can also adopt cylinder slide plane to coordinate.
In this system, spherical bearing 9 provides vertical bearing capacity under normal circumstances, and elastic shock-absorbing support seat 8 provides damping and horizontal resiliency rigidity.When beam body 7 produces horizontal movement, beam body 7 slides on upper base plate, thereby compression Vertical Spring 2 produces vertical damping, because beam body 7 is bearing on the spherical fitting face between middle liner plate 12 and upper and lower seat board 11,13, there is certain slope, and produce horizontal component, form horizontal rigidity.Meanwhile, when Vertical Spring 2 bears axial load, interior annulus 22 by compression and reduced, outer toroid 21 Tensiles and enlarged-diameter, inside and outside annulus 22,21 produces axial deformation and plays spring action along taper seat relative sliding and forms damping.Because Vertical Spring 2 and friction pendulum support 1 bear vertical load jointly, the vertical carrying of pier 6, without impact, due to the effect of Vertical Spring, has been realized to the vertical damping of bridge simultaneously.
Embodiment bis-
Referring to Fig. 5, the difference of the present embodiment and embodiment mono-is, in the middle of lower seat board 13 bottoms, is provided with gathering sill 14, and on base 3, correspondence arranges lead 15, and lead 15 is slidably matched with gathering sill 14.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.

Claims (9)

1. the horizontal resiliency damping system of a Longspan Bridge, it is characterized in that: comprise the elastic shock-absorbing support seat and the common bearing that are installed between pier and beam body, in elastic shock-absorbing support seat both sides, be provided with common bearing, described elastic shock-absorbing support seat is mainly comprised of upper base plate, middle liner plate, lower seat board and base, middle liner plate is assemblied between upper and lower seat board, and form the curved surface face that is slidably matched with upper and lower seat board respectively, base is positioned at lower seat board below, between described lower seat board and base, Vertical Spring is set.
2. the horizontal resiliency damping system of Longspan Bridge according to claim 1, is characterized in that: described elastic shock-absorbing support seat is one or one group.
3. the horizontal resiliency damping system of Longspan Bridge according to claim 1, is characterized in that: the described curved surface face of being slidably matched is sphere slide plane or cylinder slide plane.
4. the horizontal resiliency damping system of Longspan Bridge according to claim 1, is characterized in that: described common bearing is spherical bearing or pot rubber bearing.
5. according to the horizontal resiliency damping system of the Longspan Bridge described in claim 1 to 4 any one, it is characterized in that: described lower seat board bottom surface and base top surface correspondence are provided with boss, and Vertical Spring two ends are placed on outside boss respectively.
6. the horizontal resiliency damping system of Longspan Bridge according to claim 5, is characterized in that: in lower seat board both sides, be respectively provided with a guiding device, this guiding device is comprised of with the slide plate that is installed on lower seat board side the guide strip being fixed on base.
7. the horizontal resiliency damping system of Longspan Bridge according to claim 5, is characterized in that: in the middle of lower seat board bottom, be provided with gathering sill, on base, correspondence arranges lead, and lead and gathering sill are slidably matched.
8. according to the horizontal resiliency damping system of the Longspan Bridge described in claim 6 or 7, it is characterized in that: described Vertical Spring is vertically alternately socketed to form by outer toroid and interior annulus, and the fitting face between outer toroid and interior annulus is taper seat.
9. according to the horizontal resiliency damping system of the Longspan Bridge described in claim 6 or 7, it is characterized in that: described Vertical Spring is rubber elastomer, helical spring or metal spring.
CN201320589959.4U 2013-09-24 2013-09-24 Horizontal elastic damping system of large-span bridge Expired - Lifetime CN203487451U (en)

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Application Number Priority Date Filing Date Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103485276A (en) * 2013-09-24 2014-01-01 成都市新筑路桥机械股份有限公司 Horizontal elastic damping system of long-span bridge
CN108385513A (en) * 2018-04-23 2018-08-10 大连理工大学 A kind of semifixed bearing of elasticity for Bridge Seismic
CN108442242A (en) * 2018-05-14 2018-08-24 华东交通大学 A kind of bridge height intelligence adjusting vibration damping holder

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103485276A (en) * 2013-09-24 2014-01-01 成都市新筑路桥机械股份有限公司 Horizontal elastic damping system of long-span bridge
CN103485276B (en) * 2013-09-24 2016-02-03 成都市新筑路桥机械股份有限公司 The horizontal resiliency damping system of Longspan Bridge
CN108385513A (en) * 2018-04-23 2018-08-10 大连理工大学 A kind of semifixed bearing of elasticity for Bridge Seismic
CN108442242A (en) * 2018-05-14 2018-08-24 华东交通大学 A kind of bridge height intelligence adjusting vibration damping holder
CN108442242B (en) * 2018-05-14 2024-02-06 华东交通大学 Bridge height intelligent regulation damping support

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Granted publication date: 20140319

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