CN105064508A - Friction pendulum type seismic mitigation and absorption bearing with variable friction coefficient - Google Patents
Friction pendulum type seismic mitigation and absorption bearing with variable friction coefficient Download PDFInfo
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- CN105064508A CN105064508A CN201510440267.7A CN201510440267A CN105064508A CN 105064508 A CN105064508 A CN 105064508A CN 201510440267 A CN201510440267 A CN 201510440267A CN 105064508 A CN105064508 A CN 105064508A
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Abstract
The invention discloses a friction pendulum type seismic mitigation and absorption bearing with a variable friction coefficient. The bearing comprises an energy-dissipating pendulum seat, a cushioning ball pendulum and a wear-resisting plate. The cushioning ball pendulum is arranged above the energy-dissipating pendulum seat; the wear-resisting plate is arranged on the energy-dissipating pendulum seat and is arranged between the cushioning ball pendulum and the energy-dissipating pendulum seat; the wear-resisting plate is provided with a plurality of regions with different friction coefficients and thus enables the friction force between the cushioning ball pendulum and the energy-dissipating pendulum seat to change along with the change of a slide position of the cushioning ball pendulum on the energy-dissipating pendulum seat; and the wear-resisting plate is of a round shape and comprises a solid circle and a plurality of concentric circles which are orderly distributed outwardly from the solid circle. The friction pendulum type seismic mitigation and absorption bearing has the advantages that by arranging the plurality of friction rings with different friction coefficients on the energy-dissipating pendulum seat, friction coefficients are increased along with the increased slide during the sliding process of the cushioning ball pendulum on the energy-dissipating pendulum seat when an earthquake happens, thereby achieving the purposes that earthquake energy is better consumed and earthquake displacement and internal force are reduced.
Description
Technical field
The present invention relates to construction work and bridge construction field, be specifically related to a kind of friction pendulum vibration absorption and isolation support becoming friction factor.
Background technology
Friction pendulum vibration absorption and isolation support is at home and abroad a kind of shock damping and insulation energy dissipating support of using in bridge engineering, industry and civilian construction, it has and subtracts the advantages such as shock insulation clear mechanism, simple structure, supporting capacity be large, easy for installation, is therefore approved by engineering circles more and more;
Friction pendulum vibration absorption and isolation support is development and change and a kind of New Isolation Bearing of coming in the form of structure of common pot rubber bearing and spherical steel support, which utilizes simple pendulum principle, the natural vibration period of extending structure, reduces the effect of seismic forces;
At present, wearing plate is arranged on shock-absorbing ball and lays out by the friction pair of friction pendulum vibration absorption and isolation support used in engineering, shock-absorbing ball swing seat adopts corrosion resistant plate or directly chromium plating on energy dissipating swing seat usually to mill part, it is fixing that the sliding friction pair that the damping spherical pendulum of this bearing and energy dissipating base form combines, the shortcoming of this structure in earthquake is that friction energy-dissipating is low, displacement structure is large, has higher requirement to the design of interstructural shrinkage joint.
Summary of the invention
The object of the present invention is to provide a kind of friction pendulum vibration absorption and isolation support becoming friction factor, it can provide larger friction energy-dissipating, reaches the effect reducing displacement and internal force.
In order to achieve the above object, the present invention is achieved through the following technical solutions:
Become a friction pendulum vibration absorption and isolation support for friction factor, it is characterized in that, comprise:
Energy dissipating swing seat;
Damping spherical pendulum, it is positioned at above energy dissipating swing seat;
Wearing plate, it is arranged on described energy dissipating swing seat, and between described damping spherical pendulum and energy dissipating swing seat, this wearing plate has the different region of multiple friction factor, and the frictional force between damping spherical pendulum and energy dissipating swing seat is changed along with the change of damping spherical pendulum slip locations on energy dissipating swing seat.
The friction pendulum vibration absorption and isolation support of above-mentioned change friction factor, wherein:
Described wearing plate is rounded, its multiple donuts comprising a filled circles and outwards distribute successively from filled circles.
The friction pendulum vibration absorption and isolation support of above-mentioned change friction factor, wherein:
Described shock-absorbing ball pendulum lower shape and the filled circles region shape of described wearing plate match.
The friction pendulum vibration absorption and isolation support of above-mentioned change friction factor, wherein:
On described wearing plate, the friction factor in filled circles region is minimum, and the friction factor of each concentric annular regions increases progressively successively from inside to outside respectively from the center of circle of filled circles.
The friction pendulum vibration absorption and isolation support of above-mentioned change friction factor, wherein, also comprises:
Back-up ring, its gap is set in outside described damping spherical pendulum, and it is connected with described energy dissipating swing seat.
The friction pendulum vibration absorption and isolation support of above-mentioned change friction factor, wherein:
Described back-up ring is connected with described energy dissipating swing seat by shearing pin key.
The friction pendulum vibration absorption and isolation support of above-mentioned change friction factor, wherein:
The top of described energy dissipating swing seat is with concave spherical surface, and described wearing plate is arranged on this concave spherical surface;
Described damping spherical pendulum is the cylinder of bottom with convex spherical, and the spherical radius of the spherical radius of the convex spherical of this damping spherical pendulum and the concave spherical surface of described energy dissipating swing seat matches.
The friction pendulum vibration absorption and isolation support of above-mentioned change friction factor, wherein, also comprises:
Upper bracket plate;
Spherical crown liner plate, it is arranged on below described upper bracket plate, and described shock-absorbing ball pendulum is arranged on the below of this spherical crown liner plate.
The friction pendulum vibration absorption and isolation support of above-mentioned change friction factor, wherein:
Be a plane below described upper bracket plate;
Be a plane above described spherical crown liner plate, here is a convex spherical; The plane of this spherical crown liner plate is provided with the first wearing piece, and the plane of this first wearing piece and described upper bracket plate forms one group of friction pair.
The friction pendulum vibration absorption and isolation support of above-mentioned change friction factor, wherein:
The top of described damping spherical pendulum is concave spherical surface, and the spherical radius of the spherical radius of this concave spherical surface and the convex spherical of described spherical crown liner plate matches; The concave spherical surface of described damping spherical pendulum is provided with the second wearing piece, and the convex spherical of this second wearing piece and described spherical crown liner plate forms one group of friction pair.
The present invention compared with prior art has the following advantages: by arranging the drag ring of multiple different coefficients of friction on energy dissipating swing seat, when an earthquake occurs, damping spherical pendulum is on energy dissipating swing seat in slipping, friction factor increases along with slippage and increases, thus reaches the object of better earthquake energy, reduction earthquake displacement and internal force.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention;
Fig. 2 is the overall structure schematic diagram of wearing plate of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, by describing a preferably specific embodiment in detail, the present invention is further elaborated.
As shown in Figure 1; Become a friction pendulum vibration absorption and isolation support for friction factor, it comprises: energy dissipating swing seat 1; Damping spherical pendulum 2, it is positioned at above energy dissipating swing seat 1; Wearing plate 3, it is arranged on described energy dissipating swing seat 1, and between described damping spherical pendulum 2 and energy dissipating swing seat 1, this wearing plate 3 has the different region of multiple friction factor, and the frictional force between damping spherical pendulum 2 and energy dissipating swing seat 1 is changed along with the change of damping spherical pendulum 2 slip locations on energy dissipating swing seat 1; Back-up ring 4, its gap is set in outside described damping spherical pendulum 2, and it is connected with described energy dissipating swing seat 1; Upper bracket plate 5; Spherical crown liner plate 6, it is arranged on below described upper bracket plate 5, and described damping spherical pendulum 2 is arranged on the below of this spherical crown liner plate 6, and the major function of spherical crown liner plate 6 meets distortion under the daily operation condition of bridge construction and corner needs.Mounting means of the present invention is, be connected with bridge superstructure by bolt or welding by four of upper bracket plate 5 edges, energy dissipating swing seat 1 bottom is connected with Bridge Pier, and the mode of connection can be welding or bolt anchoring.
As shown in Figure 2, described wearing plate 3 is rounded, and it comprises a filled circles 31 and the multiple donuts from filled circles 31 successively outwards distribution; On described wearing plate 3, the friction factor in filled circles 31 region is minimum, the friction factor of each concentric annular regions increases progressively successively from inside to outside respectively from the center of circle of filled circles 31, as required the width of each ring of wearing plate 3 and friction factor can be designed to various combination in engineering; Inner ring friction factor is controlled minimum, outer ring friction factor strengthen successively be in order to ensure in earthquake along with the increase friction factor of damping spherical pendulum 2 displacement is also corresponding increase, thus to reach in the effect reducing also to reduce while displacement structure structural internal force.
The top of described energy dissipating swing seat 1 is with concave spherical surface, and described wearing plate 3 is arranged on this concave spherical surface; Described damping spherical pendulum 2 is the cylinder of bottom with convex spherical, its convex spherical is with high light cleanliness, and normally chromium plating or parcel mirror face stainless steel plate on convex spherical, the lower shape of this damping spherical pendulum 2 and the filled circles region shape of described wearing plate 3 match, and the spherical radius of the concave spherical surface of the spherical radius of the convex spherical of this damping spherical pendulum 2 and described energy dissipating swing seat 1 matches.
In the present embodiment, described back-up ring 4 is connected with described energy dissipating swing seat 1 by shearing pin key 41, shearing pin key 41 can be anchor bolt or pin key, described back-up ring 4 is for having certain thickness, the middle doughnut-shaped steel plate with circular port, the diameter of circular port is a bit larger tham the body diameter of damping spherical pendulum 2, at ordinary times, damping spherical pendulum 2 is temporarily fixed on energy dissipating swing seat 1 by back-up ring 4, once earthquake occurs, and seismic forces reach setting load time, shear pin key 41 will lose efficacy, the constraint of contact back-up ring 4 pairs of damping spherical pendulums 2, damping spherical pendulum 2 is freely swung and produces the effect of damping power consumption, load is controlled by the friction factor of the friction pair with filled circles 31 on the wearing plate 3 of damping spherical pendulum 2 corresponding position.
In the present embodiment, be a plane below described upper bracket plate 5 and be welded with mirror face stainless steel plate; Described spherical crown liner plate 6 be above a plane, be the segment steel beam column of a convex spherical below, its convex spherical is with high light cleanliness, and normally chromium plating or parcel mirror face stainless steel plate on convex spherical; The plane of this spherical crown liner plate 6 is provided with the first wearing piece, and the mirror face stainless steel board plane of this first wearing piece and described upper bracket plate 5 forms one group of friction pair.
The top of described damping spherical pendulum 2 is concave spherical surface, and the spherical radius of the spherical radius of this concave spherical surface and the convex spherical of described spherical crown liner plate 6 matches; The concave spherical surface of described damping spherical pendulum 2 is provided with the second wearing piece, and the convex spherical of this second wearing piece and described spherical crown liner plate 6 forms one group of friction pair.
To sum up, by operating principle of the present invention be: once there is earthquake, shear pin key 41 to lose efficacy, and produce frictional force by the friction pair that damping spherical pendulum 2 and the concave spherical surface of energy dissipating swing seat 1 form and do negative work to consume partly brisance, the swing of the spherical pendulum of damping simultaneously 2, not only will extend the natural period of (change) structure, annular wearing plate 3 increases structural damping by larger friction, reaches and controls internal force but also the effect of command displacement.
Although content of the present invention has done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple amendment of the present invention and substitute will be all apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (10)
1. become a friction pendulum vibration absorption and isolation support for friction factor, it is characterized in that, comprise:
Energy dissipating swing seat (1);
Damping spherical pendulum (2), it is positioned at energy dissipating swing seat (1) top;
Wearing plate (3), it is arranged on described energy dissipating swing seat (1), and be positioned between described damping spherical pendulum (2) and energy dissipating swing seat (1), this wearing plate (3) has the different region of multiple friction factor, and the frictional force between damping spherical pendulum (2) and energy dissipating swing seat (1) is changed along with the change of damping spherical pendulum (2) slip locations on energy dissipating swing seat (1).
2. the friction pendulum vibration absorption and isolation support becoming friction factor as claimed in claim 1, is characterized in that:
Described wearing plate (3) is rounded, and it comprises a filled circles (31) and the multiple donuts from filled circles (31) successively outwards distribution.
3. the friction pendulum vibration absorption and isolation support becoming friction factor as claimed in claim 2, is characterized in that:
Described damping spherical pendulum (2) lower shape and the filled circles region shape of described wearing plate (3) match.
4. the friction pendulum vibration absorption and isolation support becoming friction factor as claimed in claim 3, is characterized in that:
The friction factor in upper filled circles (31) region of described wearing plate (3) is minimum, and the friction factor of each concentric annular regions increases progressively successively from inside to outside respectively from the center of circle of filled circles (31).
5., as the friction pendulum vibration absorption and isolation support of the change friction factor in claim 1 ~ 4 as described in any one, it is characterized in that, also comprise:
Back-up ring (4), its gap is set in described damping spherical pendulum (2) outward, and it is connected with described energy dissipating swing seat (1).
6. the friction pendulum vibration absorption and isolation support becoming friction factor as claimed in claim 5, is characterized in that:
Described back-up ring (4) is connected with described energy dissipating swing seat (1) by shearing pin key (41).
7. the friction pendulum vibration absorption and isolation support becoming friction factor as claimed in claim 5, is characterized in that:
The top of described energy dissipating swing seat (1) is with concave spherical surface, and described wearing plate (3) is arranged on this concave spherical surface;
Described damping spherical pendulum (2) is for bottom is with the cylinder of convex spherical, and the spherical radius of the spherical radius of the convex spherical of this damping spherical pendulum (2) and the concave spherical surface of described energy dissipating swing seat (1) matches.
8. the friction pendulum vibration absorption and isolation support becoming friction factor as claimed in claim 7, is characterized in that, also comprise:
Upper bracket plate (5);
Spherical crown liner plate (6), it is arranged on described upper bracket plate (5) below, and described damping spherical pendulum (2) is arranged on the below of this spherical crown liner plate (6).
9. the friction pendulum vibration absorption and isolation support becoming friction factor as claimed in claim 8, is characterized in that:
Be a plane below described upper bracket plate (5);
Be a plane above described spherical crown liner plate (6), here is a convex spherical; The plane of this spherical crown liner plate (6) is provided with the first wearing piece, and the plane of this first wearing piece and described upper bracket plate (5) forms one group of friction pair.
10. the friction pendulum vibration absorption and isolation support becoming friction factor as claimed in claim 9, is characterized in that:
The top of described damping spherical pendulum (2) is concave spherical surface, and the spherical radius of the spherical radius of this concave spherical surface and the convex spherical of described spherical crown liner plate (6) matches; The concave spherical surface of described damping spherical pendulum (2) is provided with the second wearing piece, and the convex spherical of this second wearing piece and described spherical crown liner plate (6) forms one group of friction pair.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510440267.7A CN105064508A (en) | 2015-07-24 | 2015-07-24 | Friction pendulum type seismic mitigation and absorption bearing with variable friction coefficient |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510440267.7A CN105064508A (en) | 2015-07-24 | 2015-07-24 | Friction pendulum type seismic mitigation and absorption bearing with variable friction coefficient |
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| CN105064508A true CN105064508A (en) | 2015-11-18 |
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| CN201510440267.7A Pending CN105064508A (en) | 2015-07-24 | 2015-07-24 | Friction pendulum type seismic mitigation and absorption bearing with variable friction coefficient |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106120538A (en) * | 2016-06-27 | 2016-11-16 | 中国冶集团有限公司 | A kind of bridge shear key and installation method |
| CN106592420A (en) * | 2016-11-29 | 2017-04-26 | 洛阳双瑞特种装备有限公司 | Complex framework structure sliding plate for bridge support |
| CN108179909A (en) * | 2018-01-24 | 2018-06-19 | 广州大学 | A kind of multistage frequency conversion becomes friction-pendulum shock-insulation support |
| CN109440961A (en) * | 2018-12-29 | 2019-03-08 | 衡水市橡胶总厂有限公司 | Unidirectional big damping friction puts support |
| CN109930477A (en) * | 2019-03-20 | 2019-06-25 | 中交武汉港湾工程设计研究院有限公司 | A kind of method of beam bridge friction pendulum support fast design |
| CN113914475A (en) * | 2021-09-28 | 2022-01-11 | 哈尔滨工业大学 | Friction pendulum type shock insulation layer and large span space assembly |
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| JPH11303453A (en) * | 1998-04-22 | 1999-11-02 | Asahi Chem Ind Co Ltd | Method of installing friction pendulum type base isolation device and manufacture of friction pendulum type base isolation device and load transmitter |
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| CN101701477A (en) * | 2009-11-20 | 2010-05-05 | 北京工业大学 | Arc-shaped steel spring plate vibration isolation support of friction pendulum |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106120538A (en) * | 2016-06-27 | 2016-11-16 | 中国冶集团有限公司 | A kind of bridge shear key and installation method |
| CN106592420A (en) * | 2016-11-29 | 2017-04-26 | 洛阳双瑞特种装备有限公司 | Complex framework structure sliding plate for bridge support |
| CN106592420B (en) * | 2016-11-29 | 2019-04-09 | 洛阳双瑞特种装备有限公司 | A kind of compound skeleton structure slide plate of bridge pad |
| CN108179909A (en) * | 2018-01-24 | 2018-06-19 | 广州大学 | A kind of multistage frequency conversion becomes friction-pendulum shock-insulation support |
| CN109440961A (en) * | 2018-12-29 | 2019-03-08 | 衡水市橡胶总厂有限公司 | Unidirectional big damping friction puts support |
| CN109930477A (en) * | 2019-03-20 | 2019-06-25 | 中交武汉港湾工程设计研究院有限公司 | A kind of method of beam bridge friction pendulum support fast design |
| CN113914475A (en) * | 2021-09-28 | 2022-01-11 | 哈尔滨工业大学 | Friction pendulum type shock insulation layer and large span space assembly |
| CN113914475B (en) * | 2021-09-28 | 2022-12-27 | 哈尔滨工业大学 | Friction pendulum type shock insulation layer and large span space assembly |
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