CN100362169C - Ball-type lead core damped steel support stand - Google Patents
Ball-type lead core damped steel support stand Download PDFInfo
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- CN100362169C CN100362169C CNB2004100180778A CN200410018077A CN100362169C CN 100362169 C CN100362169 C CN 100362169C CN B2004100180778 A CNB2004100180778 A CN B2004100180778A CN 200410018077 A CN200410018077 A CN 200410018077A CN 100362169 C CN100362169 C CN 100362169C
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- damper
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Abstract
The present invention relates to a ball type-lead core damping steel supporting stand which is characterized in that a bottom plane polytetrafluoroethylene plate is arranged under the ball type supporting stand; a core area is connected; stainless steel slide plates are welded with a bottom plate; the stainless steel slide plates between the bottom plane polytetrafluoroethylene plate and the bottom plate mutually slide to make the steel supporting stand horizontally move. Lead cord damping structures are arranged on both sides of the steel supporting stand; a lead cord damper is composed of a lead cord, a spacing rod and a wedge plate. The action of attracting the energy is performed by the characteristics of lead of low yield strength, approximate rectangle of a hysteresis curve, etc. The ball type-lead core damping steel supporting stand provided by the present invention can be divided into a fixed type, a unidirectional moving type or a bidirectional moving type according to the different sizes of horizontal displacement; two cutting structures or two squeezing structures are respectively adopted. The present invention has the obvious advantages that the advantages of the ball type steel supporting stand of large bearing capacity, good rotary performance, small height, etc. are conserved; moreover, the ball type steel supporting stand has the efficiency of reducing the energy and the shock; after an earthquake occurs, partial members can be replaced for satisfying the requirements of bridges, buildings, etc. in areas with high fortification strength for the supporting stand.
Description
Technical field
The present invention relates to a kind of ball-type-lead for retractable pencil damping steel support, it is a kind of shock insulation large-tonnage bearing that subtracts, and belongs to field of civil engineering such as bridge, building.
Background technology
At present, the bridge of large span and high-bearing constantly occurs, and this makes that the large-tonnage bearing has obtained using widely.Ball shaped steel bearing since vertical bearing capacity more greatly, particularly its turning power substantially exceeds other large-tonnage bearing, and the outward appearance height is less relatively, therefore is widely used gradually.People such as for example village army life, Zhang Shichen are in " experimental study of spherical bearing " literary composition, introduced the key property of spherical bearing (Sphericalbearing): (1) satisfies the needs of bearing corner by the slip between spherical crown liner plate and the sphere tetrafluoro plate, and the rotating torque size of (2) spherical bearing is relevant with the plane frictional damping with sphere.Thereby point out to compare with pot rubber bearing, spherical bearing has the advantages that corner is bigger, supporting capacity is higher.The document is one of document of early spherical bearing being studied of China.(the 5th annual meeting of China Civil Engineering Society and National urban bridge academic meeting paper collection for the second time, 1990, Tianjin)
Yet the spherical bearing that designs in the document does not have damping capacity, is spherical bearing commonly used in the low intensity area of China, is the normal cores of adopting of some combined bearings yet.
And for example, Xu Guobin, people such as Cui Ling are in " development of universal load-supporting, universal rotation, antidetonation, vibration damping ball shaped steel bearing ", (the 9th national space structures academic conference, 2000, Xiaoshan, Hangzhou) proposed to adopt the ball shaped steel bearing of many latch plates group as a kind of combined universal load-supporting of damper, universal rotation, antidetonation, vibration damping.The author has carried out mechanics, kinematic analysis to this combined isolator, and has carried out shaketalle test, proves that it has certain antidetonation, damping capacity.
Many latch plates that related antidetonation vibration damping spherical bearing adopts in the document are a kind of dampers that are usually used in mechanical aspects, and this damper utilizes steel intending under the dynamic action, and hysteresis loop can form fusiformis, has certain power consumption effect.And the modulus of elasticity of steel is bigger, and certain horizontal rigidity can be provided, and therefore has certain advantage.But this damper also has disadvantageous one side.Its hysteresis loop enveloping surface area is smaller, and it is little therefore to consume energy; And, allow that the displacement of bearing core space is also less, thereby relatively be suitable for fixed bearing because the rigidity of many latch plates group is very big.
The 3rd, C.W.Render, J.F.Stanton and T.I.Campbell, Deng people (Rotation of HighLoad Multi-rotational Bridge Bearings, Joumal of Structural Engineering Vol.121, No.4,1995) point out:
In bridge engineering, the moment of flexure-rotation relation of bearing is one of the aspect that should pay close attention in the design.In the document, the author has carried out rotating test to various large-tonnage bearings, points out that moment of flexure and angle relation that spherical bearing bears are little, and in close relations with the friction factor of slippage coupled face.This article is to be the test that cooperates u.s. norm to do, and for direction has been pointed out in the employing and the design of spherical bearing: (1) can be applied in the bridge that needs big corner, and (2) slippage coupled face adopts less friction factor to satisfy the requirement of moment of flexure.
Can know that from the document of being reported ball shaped steel bearing commonly used itself there is no energy dissipation behavior, this has hindered it and has used in the higher area of seismic fortification intensity.
Summary of the invention
In order to give full play to the intrinsic advantage of ball shaped steel bearing, and the type bearing is generalized to the higher area of vast seismic fortification intensity, the invention provides a kind of ball-type-lead for retractable pencil damping steel support with energy-dissipating and shock-absorbing effect.This bearing not only has all advantages of general ball shaped steel bearing, and its energy consume mechanism is clear and definite, and every dynamic index is good, and can realize the replacement of partial component after earthquake.
The present invention solves the technical scheme that its technical problem takes: (1) is provided with base plate below common ball shaped steel bearing, both in level to sliding relatively, (2) set up the lead for retractable pencil damper, the lead for retractable pencil damper places the base plate top, utilize characteristics such as plumbous yield strength own is low, the nearly rectangle of hysteresis loop, as material damping.
The present invention solves the technical scheme that its technical problem takes: spherical bearing mainly is made up of members such as upper bracket plate, spherical crown liner plate, lower support plate, and the spherical crown liner plate contacts with sphere curved surface with lower support plate, can rotate mutually between the two; Can slide between upper bracket plate and the spherical crown liner plate.Each contact surface adopts PTFE polyfluortetraethylene plate and mirror face stainless steel plate as the coupling plate, and its friction factor is quite little.Base plate is set in spherical bearing critical piece (also claiming core space) below, both in level to sliding relatively.Set up the lead for retractable pencil damper, utilize characteristics such as plumbous yield strength own is low, hysteresis loop is approximate rectangular, as damping material.It has very big fade performance.The lattice defect that it produces when plastic strain recovers owing to crystallization more at normal temperatures, has good ductility, is applicable to the scope of large deformation.
Specifically, the present invention improves aspect three below having done on the existing spherical bearing:
(1) a baseplane polyfluortetraethylene plate is set below spherical bearing, be connected with spherical bearing critical piece (core space) by cementing agent, stainless steel slide plate and base plate welding, the stainless steel slide plate can slide between baseplane polyfluortetraethylene plate and base plate mutually, makes steel support produce horizontal movement;
(2) two sides at steel support have designed the lead for retractable pencil damper structure, and it is to constitute by being welded to each other between location-plate, stiffener, blend stop, lead for retractable pencil damper and base plate.The lead for retractable pencil damper is made of lead for retractable pencil, gag lever post and top board; Wherein lead for retractable pencil damper gag lever post and lead for retractable pencil damping top board welding, its effect is to make lead for retractable pencil not break away from lead for retractable pencil damping top board.Stiffener is triangular in shape or trapezoidal, and is welded together with blend stop and location-plate, and welds with base plate, location-plate and base plate and the welding of lead for retractable pencil damper; Then in the blend stop outside, a face welds mutually with blend stop stiffener triangular in shape, and another side then welds with base plate, and location-plate, damper are welded to each other at this moment, and location-plate is fixed with little topmost trapezoidal stiffener welding, and the stiffener another side welds mutually with blend stop.
The lead for retractable pencil damper is a kind of hysteresis type damper, and its design restoring force model characteristics is a bilinear model.Main indexes has: yield load Q
y, yield displacement δ
y, elastic stiffness K
S1, second stiffness K
S2
According to the vertical bearing capacity difference of ball shaped steel bearing, determine the corresponding shearing that damper bore, tentatively determine the size of damper, then according to the restoring force model of this damper, calculate the horizontal rigidity and the horizontal equivalent damping coefficient of bearing.If do not meet the demands, then carry out said process repeatedly.The intensity of lead for retractable pencil and modulus of elasticity are all very low, under the effect repeatedly of seismic forces, are easy to distortion, fracture.The end plate up and down of damper is welded by steel plate or is cast as, and can bear the concentrated effect of being transmitted by damper arm-tie or core space, and disperse, and makes that the stress of lead for retractable pencil is less.The gag lever post of damper make by reinforcing bar and up and down end plate be welded to each other, and when lead for retractable pencil is cast, be in contact with one another with lead for retractable pencil.When lead for retractable pencil is subjected to shearing, according to the equilibrium of forces principle, the trend that breaks away from end plate is arranged, the lead for retractable pencil gag lever post then pushes lead for retractable pencil, guarantees that lead for retractable pencil is still in end plate.
(3) in order to prevent that rainwater or dust from entering, the ball-type lead for retractable pencil damping steel support of the present invention's design is fixed by bolts to steel plate on the blend stop, and is connected with steel plate with cementing agent, plays cushioning effect and prevents the long-term corrosion of using of steel plate.
Ball-type provided by the invention-lead for retractable pencil damping steel support has two kinds of structures.A kind of is shearing-type, and another kind is an extrusion pressing type.Though the lead for retractable pencil damping structure of shearing-type is placed on the base plate, greater than extrusion pressing type, less horizontal movement takes place by the bolted lead for retractable pencil damper of lead for retractable pencil damper arm-tie arm-tie in ball shaped steel bearing from the distance of spherical bearing for it.
The core space of described spherical bearing is made up of members such as upper bracket plate, stainless steel plectane, plane polyfluortetraethylene plate, spherical crown liner plate, sphere polyfluortetraethylene plate, lower support plate.Its operating principle is: (1) sphere polyfluortetraethylene plate (flange and spherical crown liner plate mutually combine by bonding agent) and lower support plate (notch board, surface adopt chromium plating or and stainless steel mirror notch board welding) form first group of slippage coupled face; (2) stainless steel plectane (flat board and the welding of upper bracket plate) and plane polyfluortetraethylene plate (flat board and spherical crown liner plate bonding) form second group of slippage coupled face; Slide mutually between (3) first groups of slippage coupled faces, form corner; Slide mutually between second group of slippage coupled face, adjust the eccentric throw of the vertical load that transmits on top.
According to the difference of bearing horizontal movement size, ball-type-lead for retractable pencil damping steel support can be divided into fixing, unidirectional moving and three types of two-way mobile support saddles.Fixed bearing is the effect of directly overstocking of ball shaped steel bearing and lead for retractable pencil damper, makes the lead for retractable pencil distortion, produces the energy dissipating effect.In unidirectional activity and the bi-directional movable bearing, the lead for retractable pencil damper interacts by junction plate and ball shaped steel bearing, and under variable load effects such as wind load, the horizontal movement of ball shaped steel bearing is less, and damper does not contact with junction plate, and bearing can be free to slide.Under incidental load effects such as earthquake, the horizontal movement of ball shaped steel bearing is bigger, and junction plate extruding lead for retractable pencil damper makes the lead for retractable pencil distortion, produces the energy dissipating effect.
The invention has the beneficial effects as follows conspicuous: not only preserved advantages such as the ball shaped steel bearing bearing capacity is big, rotating property is good, highly little, and effectiveness with energy-dissipating and shock-absorbing, and can after earthquake, can replace partial component, with the requirement to bearing such as the bridge that satisfies the higher area of fortification intensity, building.
Description of drawings
The present invention is further illustrated below in conjunction with accompanying drawing.
Fig. 1 is to use shearing-type ball-type lead for retractable pencil damping steel support structural representation; Haircut represents that direction across bridge or vertical bridge are to moving.
Fig. 2 is to use extrusion pressing type ball-type lead for retractable pencil damping structure seat structure schematic diagram; Haircut represents that direction across bridge or vertical bridge are to moving.
Fig. 3 is newly-designed lead for retractable pencil damper, and (1) is plan view, and (2) are the A-A sectional drawing, and (3) are left view;
Fig. 4 is the schematic diagram of lead for retractable pencil damper shown in Figure 3;
Fig. 5 is the structural representation of the ball shaped steel bearing core space described in Fig. 1 and Fig. 2.
Among the figure: 1. ball shaped steel bearing core space, 2. rubber gasket sheet, 3. steel plate, 4. lead for retractable pencil damper arm-tie bolt, 5. lead for retractable pencil damping arm-tie, 6. lead for retractable pencil damper, 7. location-plate, 8. stiffener, 9. blend stop, 10. base plate, 11. the stainless steel slide plate, 12. baseplane polyfluortetraethylene plates, 13. lead for retractable pencils, 14. lead for retractable pencil damper gag lever post, 15. lead for retractable pencil damping top boards, 16. upper bracket plates (containing the stainless steel plectane), 17. the plane polyfluortetraethylene plate, 18. spherical crown liner plates, 19. sphere polyfluortetraethylene plates.
The specific embodiment
Further illustrate substantive distinguishing features of the present invention and obvious improvement below by embodiment.
Structure (referring to Fig. 1) schematic diagram of shearing-type ball-type-lead for retractable pencil damping steel support.This example solves the technical scheme that its technical problem takes: spherical bearing mainly is made up of members such as upper bracket plate, spherical crown liner plate, lower support plate, and the spherical crown liner plate contacts with sphere curved surface with lower support plate, can rotate mutually between the two; Can slide between upper bracket plate and the spherical crown liner plate.Each contact surface adopts PTFE plate and mirror face stainless steel plate as the coupling plate, and its friction factor is quite little.Below spherical bearing 1, base plate is set, both in level to sliding relatively.Set up the lead for retractable pencil damper, utilize characteristics such as the low and nearly rectangle of hysteresis loop of plumbous yield strength own, as material damping.
Lead for retractable pencil damper 6 is made of lead for retractable pencil, gag lever post and top board in the present embodiment, lead for retractable pencil 13 forms for casting, lead for retractable pencil damper gag lever post 14 and 15 welding of lead for retractable pencil damping top board, 14 effects of lead for retractable pencil damping gag lever post are to make lead for retractable pencil 13 not break away from lead for retractable pencil damping top board 15 (Fig. 3).
Lead for retractable pencil damper 6 places the top of base plate 10, and location-plate 7, stiffener 8, blend stop 9 and lead for retractable pencil resistance device 6 are welded to each other composition with base plate 10.Thereby constitute the lead for retractable pencil damping structure.When less horizontal movement took place, less horizontal movement also took place by the lead for retractable pencil damper arm-tie 5 that lead for retractable pencil damper arm-tie bolt 4 connects in ball shaped steel bearing 1, but does not push with lead for retractable pencil damper 6, and lead for retractable pencil damper 6 is not had an effect; When horizontal movement greatly took place ball shaped steel bearing 1, lead for retractable pencil damper arm-tie 5 was collided lead for retractable pencil generation shear strain, consumed energy with lead for retractable pencil damper 6.
In order to prevent that rainwater and dust from entering the lead for retractable pencil damping structure, with the blend stop bolt steel plate 3 is fixed on the blend stop 9, on steel plate 3, place a rubber gasket sheet, to increase cushion effect with adhering method.
Constitute the outside that the stiffener of using in the plumbous damping structure is positioned at blend stop 9 in this example, play a supportive role equally, to add the horizontal holding capacity of blend stop 9.Stiffener is triangular in shape in this example, also can be trapezoidal certainly.
Extrusion pressing type lead for retractable pencil damper location-plate 7, stiffener 8, blend stop 9 are welded to form with lead for retractable pencil damper 6 and with base plate 10 each other.When less horizontal movement took place ball shaped steel bearing 1, owing to have spacing between ball shaped steel bearing 1 and the lead for retractable pencil damper 6, lead for retractable pencil damper 6 was not had an effect; When the horizontal movement of ball shaped steel bearing 1 was big, lead for retractable pencil damper 6 was squeezed and produces distortion, consumed energy.
All the other are all identical with embodiment 1 for present embodiment.
Embodiment 3
Its direction across bridge of bi-directional movable bearing and vertical bridge are to arranging the structure that all adopts as shown in Figure 1; Its vertical bridge of unidirectional freely movable bearing is to the structure that adopts as shown in Figure 1, and direction across bridge adopts structure as shown in Figure 2; Its direction across bridge of fixed bearing and vertical bridge are to arranging the structure that all adopts as shown in Figure 2.All the other are all with embodiment 1.
Claims (6)
1. ball-type-lead for retractable pencil damping steel support comprises it is characterized in that the core space of the spherical bearing of being made up of upper bracket plate, stainless steel plectane, plane polyfluortetraethylene plate, spherical crown liner plate, sphere polyfluortetraethylene plate, undersetting member:
(1) a baseplane polyfluortetraethylene plate is set below spherical bearing, it is connected with the core space of spherical bearing, and stainless steel slide plate and base plate welding are slided between baseplane polyfluortetraethylene plate and the stainless steel slide plate mutually, make steel support produce horizontal movement;
(2) be provided with the lead for retractable pencil damping structure in the both sides of steel support, it is to be made of location-plate, stiffener, blend stop, lead for retractable pencil damper and base plate; The lead for retractable pencil damper is made of lead for retractable pencil, gag lever post and top board; Be fixed on the base plate after the welding of shearing-type lead for retractable pencil damper and location-plate, extrusion pressing type lead for retractable pencil damper is then directly fixed with base plate and location-plate welding; Wherein lead for retractable pencil damper gag lever post and lead for retractable pencil damping top board welding, stiffener is triangular in shape or trapezoidal, and is welded together with blend stop and location-plate, and welds with base plate; Location-plate and base plate and the welding of lead for retractable pencil damper.
2. by the described ball-type of claim 1-lead for retractable pencil damping steel support, it is characterized in that the baseplane polyfluortetraethylene plate that the spherical bearing below is provided with is to be connected with the core space of spherical bearing by cementing agent.
3. by the described ball-type of claim 1-lead for retractable pencil damping steel support, it is characterized in that described shearing-type lead for retractable pencil damper and location-plate fixedly are placed on the base plate, but from the distance of spherical bearing greater than extrusion pressing type.
4. by the described ball-type of claim 1-lead for retractable pencil damping steel support, it is characterized in that stiffener triangular in shape is then in the blend stop outside, a face of stiffener welds mutually with blend stop, another side then welds with base plate, location-plate, damper are welded to each other, location-plate and above it little trapezoidal stiffener welding fixing.
5. by the described ball-type of claim 3-lead for retractable pencil damping steel support, it is characterized in that varies in size to be divided into by horizontal movement fixing, unidirectionally moves or two-wayly moves three types, and wherein, the direction across bridge of two-way mobile support saddle and vertical bridge adopt the shearing-type structure to arranging; The vertical bridge of unidirectional mobile support saddle adopts the shearing-type structure to arranging; The direction across bridge of unidirectional mobile support saddle is arranged and is adopted the extrusion pressing type structure; The direction across bridge of fixed bearing and vertical bridge adopt the extrusion pressing type structure to arranging.
6. by the described ball-type of claim 1-lead for retractable pencil damping steel support, it is characterized in that on blend stop, using bolt one steel plate, and steel plate is connected with blend stop with cementing agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100180778A CN100362169C (en) | 2004-04-29 | 2004-04-29 | Ball-type lead core damped steel support stand |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100180778A CN100362169C (en) | 2004-04-29 | 2004-04-29 | Ball-type lead core damped steel support stand |
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|---|---|
| CN1570280A CN1570280A (en) | 2005-01-26 |
| CN100362169C true CN100362169C (en) | 2008-01-16 |
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| CNB2004100180778A Active CN100362169C (en) | 2004-04-29 | 2004-04-29 | Ball-type lead core damped steel support stand |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101462149B (en) * | 2009-01-15 | 2011-08-10 | 洛阳市兴荣工业有限公司 | Foundry technique method of lower support board of ball type support |
| CN104032670B (en) * | 2014-06-11 | 2015-11-25 | 同济大学 | A kind of large corner high friction antivibration support |
| CN107217587A (en) * | 2017-06-08 | 2017-09-29 | 成都市大通路桥机械有限公司 | A kind of split type Isolated Bridges bearing |
| CN109024256A (en) * | 2018-09-06 | 2018-12-18 | 中铁第勘察设计院集团有限公司 | Lead damps vibration absorption and isolation support |
| CN111749388A (en) * | 2020-06-24 | 2020-10-09 | 浙江精工钢结构集团有限公司 | Spherical steel support trolley of retractable roof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4320549A (en) * | 1978-07-04 | 1982-03-23 | Glacier Gmbh-Deva Werke | Rocker-sliding bearing assembly and a method of lining the assembly |
| DE3517895A1 (en) * | 1985-05-17 | 1986-11-20 | Friedrich Maurer Söhne GmbH & Co KG, 8000 München | Cap-type sliding bearing |
| CN1184872A (en) * | 1995-10-12 | 1998-06-17 | 北方交通大学 | Shock-proof ball shaped steel bearing |
| CN2336002Y (en) * | 1998-02-11 | 1999-09-01 | 铁道部科学研究院铁道建筑研究所 | Column face bearing |
| CN2578386Y (en) * | 2002-09-29 | 2003-10-08 | 徐国彬 | Hyperbolic steel seat for engineering structure |
| CN2693818Y (en) * | 2004-04-29 | 2005-04-20 | 同济大学 | Spherical steel bearing with lead core damping |
-
2004
- 2004-04-29 CN CNB2004100180778A patent/CN100362169C/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4320549A (en) * | 1978-07-04 | 1982-03-23 | Glacier Gmbh-Deva Werke | Rocker-sliding bearing assembly and a method of lining the assembly |
| DE3517895A1 (en) * | 1985-05-17 | 1986-11-20 | Friedrich Maurer Söhne GmbH & Co KG, 8000 München | Cap-type sliding bearing |
| CN1184872A (en) * | 1995-10-12 | 1998-06-17 | 北方交通大学 | Shock-proof ball shaped steel bearing |
| CN2336002Y (en) * | 1998-02-11 | 1999-09-01 | 铁道部科学研究院铁道建筑研究所 | Column face bearing |
| CN2578386Y (en) * | 2002-09-29 | 2003-10-08 | 徐国彬 | Hyperbolic steel seat for engineering structure |
| CN2693818Y (en) * | 2004-04-29 | 2005-04-20 | 同济大学 | Spherical steel bearing with lead core damping |
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