CN105951584A - Graded anti-seismic, seismic-reducing and seismic-isolating support - Google Patents

Graded anti-seismic, seismic-reducing and seismic-isolating support Download PDF

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Publication number
CN105951584A
CN105951584A CN201610444219.XA CN201610444219A CN105951584A CN 105951584 A CN105951584 A CN 105951584A CN 201610444219 A CN201610444219 A CN 201610444219A CN 105951584 A CN105951584 A CN 105951584A
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China
Prior art keywords
plate
support
seismic
support plate
pair
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CN201610444219.XA
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CN105951584B (en
Inventor
张常勇
徐召
白光耀
赵洪蛟
丁毅
王溧
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Shandong transportation planning and Design Institute Group Co.,Ltd.
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Shandong Provincial Transportation Planning and Design Institute Co Ltd
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Classifications

    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00Structural or constructional details of bridges
    • E01D19/04Bearings; Hinges
    • E01D19/041Elastomeric bearings
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00Structural or constructional details of bridges
    • E01D19/04Bearings; Hinges
    • E01D19/042Mechanical bearings
    • E01D19/046Spherical bearings
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00Structural or constructional details of bridges
    • E01D19/04Bearings; Hinges
    • E01D19/042Mechanical bearings
    • E01D19/047Pot bearings

Abstract

The invention discloses a graded anti-seismic, seismic-reducing and seismic-isolating support which is used for solving the problem that an existing support is poor in anti-seismic effect. The graded anti-seismic, seismic-reducing and seismic-isolating support comprises a unidirectional movable support, first C-shaped soft steel damping components and a speed locking device. The unidirectional movable support comprises a base plate, a lower support plate, an abrasion-resistant sliding assembly, an upper support plate, a disk spring assembly and a top plate which are sequentially overlaid from bottom to top. The base plate and the side of the lower support plate each are provided with a pair of first C-shaped soft steel damping components, and the upper support plate is connected with an extending part of the lower support plate through a pair of speed locking devices. A guide post, the disk spring assembly and second C-shaped soft steel damping components are installed between the upper support plate and the top plate. After the support is adopted, earthquake force can be reasonably dispersed to each pier, medium and small earthquakes are resisted by means of intensity of each pier, and soft steel damping components of movable piers can also effectively participate in dissipation of earthquake energy.

Description

A kind of classification antidetonation, vibration absorption and isolation support
Technical field
The present invention relates to a kind of bridge pad, particularly relate to a kind of bridge vibration absorption and isolation support.
Background technology
Continuous bridge structure is one of type of bridge of being most widely used at present, its along bridge to construction features Being to be typically provided with an anchor block (setting hold-down support), other bridge piers are movable pier (setting sliding support). Therefore, in seismic process, structure is undertaken by anchor block to seismic force is substantially all along bridge, and movable pier is basic Do not undertake seismic force.
Owing to continuous bridge is undertaken by anchor block, so resisting it to seismic force is substantially all along bridge Two problems are often run into during shake design.No matter one, carry out Ductility Design or subtract shock insulation and set anchor block Meter, is still mainly undertaken by anchor block to seismic force along bridge, and movable pier does not the most undertake seismic force, therefore when even When continuous beam overall length is longer or beam body deadweight is bigger, anchor block complete alone antidetonation task difficulty bigger;Its two, The Ductility Design or the seismic isolation design that use anchor block are generally directed to E2 earthquake (rarely occurred earthquake), this Time the design of E2 Structures under Earthquake can meet requirement, but under E1 earthquake (in, small earthquake) effect, prolong Property design or seismic isolation design do not play a role, although now earthquake intensity is little, but only undertaken by anchor block Seismic force still cannot meet requirement.
Summary of the invention
In order to solve the deficiencies in the prior art, the present invention provides a kind of classification antidetonation, vibration absorption and isolation support, is used for Solve existing bearing and can not realize the problem of classification antidetonation, buffered by design two-stage, reduce design difficulty, Improve anti seismic efficiency.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of classification antidetonation, vibration absorption and isolation support, including one-way movable support, the first c-type mild steel damping structure Part and speed locking device, described one-way movable support include being sequentially overlapped from bottom to top setting base plate, under Support plate, wear-resisting slide assemblies, upper bracket plate, disk spring assembly and top board, it is characterised in that
It is fixed by shear pin between described base plate and lower support plate;And in base plate and the side of lower support plate Face is respectively provided with a pair first c-type mild steel damping members, one end of every pair of first c-type mild steel damping member that This overlaps and is hinged on the middle part of undersetting, and other end is respectively hinged on base plate;
The surrounding of square described upper bracket plate is provided with four baffle plates, the baffle plate that one pair of which is oppositely arranged with It is attached by a pair speed locking device between lower support plate extension, the baffle plate of another pair of opposing Coordinate with forming slide-and-guide between lower support plate;
Upper surface at upper bracket plate is provided with four circle the first sleeves, solid in each first sleeve Dingan County fills a lead, is equipped with disk spring assembly in the space between lead and the first sleeve, Described disk spring assembly is formed by stacking by multi-disc, is provided with four circle the second sleeves on top board, The diameter of the second sleeve is more than the diameter of the first sleeve, and the second sleeve and the first sleeve coordinate, and at two sets It is fixed by the second shear pin between Tong, top board is provided with the groove corresponding with lead, and should Formed between groove and lead and be slidably matched;Axially it is provided with multiple between top board and upper bracket plate Second c-type mild steel damping member.
Scheme further, is provided with anchor structure at described baseplate underside, is provided with anchoring on the upside of top board Structure.
Scheme further, described wear-resisting slide assemblies includes rubber slab superposed on one another and steel liner plate, wherein Join between steel liner plate and upper bracket plate to be incorporated at cooperation and tetrafluoro slide plate is set, described rubber slab and lower support plate Between join to be incorporated at cooperation tetrafluoro slide plate be set.
Scheme further, described wear-resisting slide assemblies includes hemispherical arc and tetrafluoro slide plate, described half The lower surface of spherical arc is spherical and forms spherical cooperation with lower support plate by tetrafluoro slide plate, described half The upper surface of spherical arc is plane and is coordinated with upper bracket plate formation plane by tetrafluoro slide plate.
Optimal, above-mentioned speed locking device is Hydraulic Velocity lock.
Can select, described one-way movable support is one-way movable pot bearing or one-way movable ball shaped steel bearing In one.
The invention has the beneficial effects as follows: compared with the Aseismic Design only relying on anchor block and resisting seismic force, use Reasonably seismic force can be scattered in after the bearing of the present invention each bridge pier, in, under small earthquake effect rely on Each pier intensity resists earthquake, under rarely occurred earthquake effect, after seismic force is scattered in each pier, and the mild steel of movable pier Damping member also can effectively participate in dissipation seismic energy, it is achieved thereby that two level antidetonations of continuous bridge structure Design, makes structure design more reasonable, has saved construction cost and reduced design difficulty.
Accompanying drawing explanation
Fig. 1 is that the master of the present invention regards full sectional view.
Fig. 2 is the vertical view half sectional view of the present invention.
Fig. 3 is the side view of the present invention.
Fig. 4 is the Dynamic Graph (omitting disk spring assembly) of E1 geological process undersetting.
Fig. 5 is the Dynamic Graph (omitting disk spring assembly) of E2 geological process undersetting.
Fig. 6 is partial enlarged drawing at A in Fig. 1.
Fig. 7 is the deformation state (omitting disk spring assembly) of bearing in Fig. 1.
In figure: 1 base plate, 2 lower support plate, 3 upper bracket plates, 4 rubber slabs, 5 steel liner plates, 6 tetrafluoros are sliding Plate, 6 ' tetrafluoro slide plates, 7 first shear pins, 81 first c-type mild steel damping members, 82 second c-types are soft Steel damping member, 9 speed locking devices, 4 ' hemispherical arcs, 6 " tetrafluoro slide plate, 31 first sleeves, 32 second sleeves, 33 disk spring assemblies, 34 leads, 35 second shear pins, 36 grooves, 10 tops Plate.
Detailed description of the invention
The present invention is a kind of classification antidetonation, vibration absorption and isolation support, is mainly used in continuous bridge structure, it is therefore an objective to Realize the two level Aseismic Design (E1 earthquake, E2 earthquake) of structure, reduce Seismic Design of Continuous Girder Bridges design difficulty.
Embodiment one, as shown in Fig. 1 to Fig. 3, Fig. 6, major design is characterized by: include one-way movable Bearing, this bearing is based on one-way movable support, and gather way in this bearing locking device, shearing Pin and c-type mild steel damping member, wherein, the preferably uni-directional movable pot bearing of one-way movable support, with reference to figure 1 to Fig. 3, this one-way movable pot bearing include base plate 1, lower support plate 2, upper bracket plate 3, rubber slab 4, Steel liner plate 5, tetrafluoro slide plate 6, top board, disk spring assembly and shear pin, base plate 1 and lower support plate 2 it Between be fixed by four the first vertically arranged shear pins 7, rubber slab 4 and steel liner plate 5 superposition and set Put between lower support plate and upper bracket plate, and arrange at the position that steel liner plate 5 contacts with upper bracket plate respectively Tetrafluoro slide plate 6, and tetrafluoro slide plate 6 ' is set between lower support plate and base plate.
The most above-mentioned, rubber slab 4, steel liner plate 5, tetrafluoro slide plate 6 form wear-resisting slide assemblies, are used for Interference fits between upper lower support plate, there is also various deformation.
Theing improvement is that, the arrange first c-type mild steel symmetrical in two sides of above-mentioned lower support plate hinders Buddhist nun's component 81, the first c-type mild steel damping member 81 two ends are arranged on lower support plate respectively by the way of hinged 2 and base plate 1 side on so that lower support plate and base plate form a kind of support in the glide direction of bearing, should It is supported on generation effect when E2 earthquake occurs.For ensureing that the first c-type mild steel damping member 81 is at seismic process In be in steady statue, in such a configuration, the first c-type mild steel damping member 81 is totally four right, two-by-two one Group is distributed in both sides.First c-type mild steel damping member 81 is installed by each of which in the following way: First c-type mild steel damping member 81 one end is hinged in the middle part of lower support plate, and shares a hinged otic placode 811, The other end is connected with the hinged otic placode 811 ' in base plate 1 glide direction respectively, so, relative in lower support plate During base plate slides, under the common effect of two the first c-type mild steel damping members 81, have placed in the middle Trend.
Above-mentioned lower support plate is square, be provided with at an upper portion thereof one recessed for accommodating the circle of rubber slab 4 Groove, four corners of lower support plate arrange pin-and-hole, are used for installing shear pin.By four shear pins with upper Set up between the base plate stated and connect.Suitable bridge in lower support plate is respectively welded 7 font plates to two ends, uses In installation rate locking device 9, form the extension of lower support plate.
Installation rate locking device 9 between above-mentioned upper bracket plate and base plate, speed locking device 9 is liquid Pressure speed lockup's device, two ends are respectively and fixedly installed to upper bracket plate 3 and base plate 1, and this speed locking device pair The glide direction of one-way support locks.Speed lockup's device is not had an effect when bearing sliding speed is the slowest, When bearing sliding speed reaches speed faster, speed lockup's device two ends lock, and no longer slide.
For adapting to above-mentioned amendment, above-mentioned upper bracket plate 3 include flat part and be positioned at four edges and to The rib of lower setting, two ribs wherein coordinated with speed locking device 9 arranges screw hole, passes through spiral shell Clench solid mode to be attached with above-mentioned speed locking device 9.Two other rib and lower support plate 2 Between formed and be slidably matched so that along glide direction, there is slide-and-guide between upper and lower support plate, for subtracting Little friction, coordinates at slide-and-guide and arranges tetrafluoro slide plate at face.
Upper surface at upper bracket plate 3 is provided with four circle the first sleeves 31, four circle the first sleeves 31 are evenly arranged, and fixedly mount a lead 34 in each first sleeve, and lead is circular steel column, Space between lead and the first sleeve is equipped with disk spring assembly 33, disk spring assembly be by Multi-disc is formed by stacking, and top board is steel plate, is provided with four circle the second sleeves 32 on top board, and second The diameter of sleeve is more than the diameter of the first sleeve, and the second sleeve and the first sleeve coordinate, and two sleeves it Between be attached by the second shear pin 35, form a kind of temporary transient annexation.Top board 10 is arranged There is the groove 36 corresponding with lead, and between this groove and lead, formation is slidably matched.
Multiple second c-type mild steel that is axially provided with between top board 10 and upper bracket plate 3 damps structure Part 82, the size being smaller in size than the first c-type mild steel damping member of the second c-type mild steel damping member 82, the Two c-type mild steel damping member quantity are more, and one group is grouping use two-by-two, forms preferable damping effect.
After using the bearing of the present invention at the movable pier of continuous bridge, under normal usage, shear pin is not Destroying, bearing only can prolong along bridge to slip, and sliding speed is very slow, and speed lockup's device is not had an effect, Do not affect the normal slip of bearing, now meet continuous bridge design requirement under normal usage.
Under E1 geological process, bearing sliding speed, the suitable bridge of bearing is locked by speed to slip behavior Determining device to pin, and have preliminary shock-absorbing capacity, but earthquake intensity is little, shear pin does not destroys, First c-type mild steel damping member is inoperative, and now movable pier relies on self-strength and anchor block shared Seismic force, E1 earthquake intensity is little, after seismic force is distributed to anchor block and each movable pier shared, each pier Rely on self-strength can meet shockproof requirements, with reference to Fig. 4.
Under E2 geological process, bearing sliding speed quickly, locked by speed to slip behavior by the suitable bridge of bearing Determining device to pin, simultaneously because earthquake intensity is big, shear pin is cut off, the first c-type mild steel of bearing both sides Damping member starts the power consumption that deforms, and with reference to Fig. 5, concurs with speed locking device, now movable Pier undertakes seismic force and the seismic energy that can effectively dissipate incessantly, with the Ductility Design of anchor block or subtract shock insulation and set Geological process resisted jointly by meter, makes structure meet shockproof requirements.Compared with anchor block alone bear geological process, After using the bearing of the present invention, seismic force can be distributed at movable pier under E1, E2 geological process, and make Resist geological process by different compound modes, it is ensured that structural safety, make structure design more reasonable simultaneously, Save construction cost and reduced design difficulty.
The bearing of the present invention is based on one-way movable pot bearing, by less structural change, increases speed Degree locking device, shear pin and the first c-type mild steel damping member, it is achieved each portion under varying strength geological process Part plays a role successively by foregoing invention.
Embodiment two
It is similarly modified and is also applicable to other types one-way movable support (such as one-way movable ball shaped steel bearing, ginseng Examine Fig. 7) it is same principle of the present invention, should be protected.Wherein, in one-way movable ball shaped steel bearing, Wear-resisting slide assemblies uses hemispherical arc, and arrange tetrafluoro in the both sides up and down of hemispherical arc 4 ' sliding Plate 6 ".
Preferably, the lower surface of above-mentioned hemispherical arc is spherical, and upper surface is plane.Upper surface is It is smooth that plane can ensure that in glide direction.
Embodiment described above is only to be described the preferred embodiment of the present invention, not to this Bright scope is defined, on the premise of designing spirit without departing from the present invention, and relevant technical staff in the field Various deformation and improvement to the present invention, all should expand in protection domain as determined by claims of the present invention.

Claims (5)

1. classification antidetonation, a vibration absorption and isolation support, including one-way movable support, the first c-type mild steel damping Component and speed locking device, described one-way movable support include being sequentially overlapped from bottom to top setting base plate, Lower support plate, wear-resisting slide assemblies, upper bracket plate, disk spring assembly and top board, it is characterised in that
It is fixed by shear pin between described base plate and lower support plate;And in base plate and the side of lower support plate Face is respectively provided with a pair first c-type mild steel damping members, one end of every pair of first c-type mild steel damping member that This overlaps and is hinged on the middle part of undersetting, and other end is respectively hinged on base plate;
The surrounding of square described upper bracket plate is provided with four baffle plates, the baffle plate that one pair of which is oppositely arranged with It is attached by a pair speed locking device between lower support plate extension, the baffle plate of another pair of opposing Coordinate with forming slide-and-guide between lower support plate;
Upper surface at upper bracket plate is provided with four circle the first sleeves, fixing in each first sleeve One lead is installed, the space between lead and the first sleeve is equipped with disk spring assembly, institute State disk spring assembly to be formed by stacking by multi-disc, top board is provided with four circle the second sleeves, the The diameter of two sleeves is more than the diameter of the first sleeve, and the second sleeve and the first sleeve coordinate, and at two sleeves Between be fixed by the second shear pin, top board is provided with the groove corresponding with lead, and this is recessed Formed between groove and lead and be slidably matched;Multiple axially it is provided with between top board and upper bracket plate Two c-type mild steel damping members.
A kind of classification antidetonation, vibration absorption and isolation support the most according to claim 1, it is characterised in that Described baseplate underside is provided with anchor structure, is provided with anchor structure on the upside of top board.
A kind of classification antidetonation, vibration absorption and isolation support the most according to claim 1, it is characterised in that institute State wear-resisting slide assemblies and include rubber slab superposed on one another and steel liner plate, wherein between steel liner plate and upper bracket plate Join to be incorporated at cooperation and tetrafluoro slide plate is set, join between described rubber slab and lower support plate to be incorporated at cooperation and set Put tetrafluoro slide plate.
A kind of classification antidetonation, vibration absorption and isolation support the most according to claim 1, it is characterised in that institute State wear-resisting slide assemblies and include that hemispherical arc and tetrafluoro slide plate, the lower surface of described hemispherical arc are Spherical and form spherical cooperation by tetrafluoro slide plate with lower support plate, the upper surface of described hemispherical arc is Plane is also coordinated with upper bracket plate formation plane by tetrafluoro slide plate.
A kind of classification antidetonation, vibration absorption and isolation support the most according to claim 1, it is characterised in that on Stating speed locking device is Hydraulic Velocity lock.
CN201610444219.XA 2016-06-20 2016-06-20 One kind classification antidetonation, vibration absorption and isolation support Active CN105951584B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106436561A (en) * 2016-10-28 2017-02-22 中交柏嘉工程技术研究院有限公司 Equal rigid arm speed locking seismic isolation bearing
CN109811640A (en) * 2019-02-20 2019-05-28 广州大学 A kind of two-stage buffer limit earthquake isolating equipment
CN109898408A (en) * 2019-03-15 2019-06-18 吴磊 A kind of combined bridge antidetonation noise reduction support
CN110468695A (en) * 2019-08-27 2019-11-19 天津大学 Variation rigidity three-dimensional isolation method and apparatus

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CN101029538A (en) * 2007-04-06 2007-09-05 北京工业大学 Three-way shock-absorbing stand with variable rigidity and damping
KR20100118883A (en) * 2009-04-29 2010-11-08 김성원 Small seismic isolating device with multi-damping function
CN102839751A (en) * 2012-10-10 2012-12-26 衡水震泰隔震器材有限公司 Three-dimensional shock-isolated bearing and preparation method for same
CN204825625U (en) * 2015-07-22 2015-12-02 安徽尚德科技有限公司 One -way active type elastoplasticity steel attenuator
CN204825627U (en) * 2015-08-03 2015-12-02 西安中交土木科技有限公司 Locking of elastoplasticity steel speed subtracts isolation bearing
CN105484153A (en) * 2016-01-22 2016-04-13 石家庄铁道大学 Seismic mitigation and isolation bearing adopting tension-compression energy dissipation characteristic of high-damping rubber and easy to repair and preparation method of seismic mitigation and isolation bearing
CN205711719U (en) * 2016-06-20 2016-11-23 山东省交通规划设计院 A kind of classification antidetonation, vibration absorption and isolation support

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101029538A (en) * 2007-04-06 2007-09-05 北京工业大学 Three-way shock-absorbing stand with variable rigidity and damping
KR20100118883A (en) * 2009-04-29 2010-11-08 김성원 Small seismic isolating device with multi-damping function
CN102839751A (en) * 2012-10-10 2012-12-26 衡水震泰隔震器材有限公司 Three-dimensional shock-isolated bearing and preparation method for same
CN204825625U (en) * 2015-07-22 2015-12-02 安徽尚德科技有限公司 One -way active type elastoplasticity steel attenuator
CN204825627U (en) * 2015-08-03 2015-12-02 西安中交土木科技有限公司 Locking of elastoplasticity steel speed subtracts isolation bearing
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106436561A (en) * 2016-10-28 2017-02-22 中交柏嘉工程技术研究院有限公司 Equal rigid arm speed locking seismic isolation bearing
CN106436561B (en) * 2016-10-28 2018-05-04 中交柏嘉工程技术研究院有限公司 Etc. firm arm speed lockup vibration absorption and isolation support
CN109811640A (en) * 2019-02-20 2019-05-28 广州大学 A kind of two-stage buffer limit earthquake isolating equipment
CN109898408A (en) * 2019-03-15 2019-06-18 吴磊 A kind of combined bridge antidetonation noise reduction support
CN110468695A (en) * 2019-08-27 2019-11-19 天津大学 Variation rigidity three-dimensional isolation method and apparatus

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