CN202899031U - Seismic mitigation and isolation anti-girder-fall supporting seat - Google Patents
Seismic mitigation and isolation anti-girder-fall supporting seat Download PDFInfo
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- CN202899031U CN202899031U CN 201220630689 CN201220630689U CN202899031U CN 202899031 U CN202899031 U CN 202899031U CN 201220630689 CN201220630689 CN 201220630689 CN 201220630689 U CN201220630689 U CN 201220630689U CN 202899031 U CN202899031 U CN 202899031U
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- spherical crown
- plate
- shock insulation
- crown plate
- girder
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Abstract
The utility model belongs to the technical field of bridge supports and discloses a seismic mitigation and isolation anti-girder-fall supporting seat. The main technical features are that the seismic mitigation and isolation anti-girder-fall supporting seat comprises an upper supporting seat plate, a spherical crown plate, a lower supporting seat plate and a foundation bolt, wherein a seismic mitigation and isolation spherical crown plate is arranged between the spherical crown plate and the lower supporting seat plate, and spherical surface friction pairs are respectively arranged between the spherical crown plate and the seismic mitigation and isolation spherical crown plate and between the seismic mitigation and isolation spherical crown plate and the lower supporting seat plate. A shear force bolt is arranged between the seismic mitigation and isolation spherical crown plate and the lower supporting seat plate, and an anti-girder-fall check ring is arranged on the outer edge of a bottom surface of the seismic mitigation and isolation spherical crown plate. According to the seismic mitigation and isolation anti-girder-fall supporting seat, when an earthquake happens, the shear force bolt is sheared off, a limiting device is opened, the supporting seat separates a girder body from an abutment wall through relative sliding of a circular arc surface, and the seismic mitigation effect is achieved. When the supporting seat moves to the maximum seismic isolation displacement, the anti-girder-fall check ring and the lower supporting seat plate are squeezed, and the seismic mitigation is achieved. Simultaneously, the anti-girder-fall check ring prevents the seismic mitigation and isolation spherical crown plate from sliding continuously, and the anti-girder-fall action is achieved.
Description
Technical field
The utility model belongs to the bridge pad technical field, relates in particular to a kind of shock insulation girder falling bearing that subtracts.
Background technology
At present, domestic antishock device for bridge and other buildings mainly contains lead-rubber aseismatic bearing, polyurethane spring spherical bearing and large friction factor aseismatic bearing etc., the equal Shortcomings part of above-mentioned bearing.
The lead-rubber aseismatic bearing, the reason such as relatively poor owing to durability, that supporting capacity is little, environment pollution is serious is eliminated gradually;
The polyurethane spring spherical bearing because poor durability, bend after displacement little, physical dimension is large again, is subject to certain limitation in the use;
Large friction factor aseismatic bearing, because it is larger to be delivered to the earthquake lateral force of substructure, only relies on the friction pair earthquake energy of large friction factor, and restoring force can not be provided, can only use as a kind of anti-seismic construction, and actual anti seismic efficiency does not satisfy the requirement of structure design yet.
The utility model content
The technical problems to be solved in the utility model just provides a kind ofly can utilize this body structure impact to play cushioning effect when earthquake is arrived, and what have simultaneously the girder falling function subtracts shock insulation girder falling bearing.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: comprise the upper bracket plate, the bottom surface is the spherical crown plate of epirelief sphere, end face is the lower support plate of lower concave spherical surface, stone bolt, be provided with flat frictional pair between upper bracket plate and spherical crown plate, be provided with between described spherical crown plate and the lower support plate and subtract shock insulation spherical crown plate, subtracting shock insulation spherical crown plate top surface is the upper concave spherical surface that is complementary with the epirelief sphere, the bottom surface is the lower protruding sphere that is complementary with lower concave spherical surface, spherical crown plate and subtracting between shock insulation spherical crown plate, subtract and be respectively arranged with the sphere friction pair that corrosion resistant plate or chromium coating and modified Teflon plate form between shock insulation spherical crown plate and lower support plate, subtract between shock insulation spherical crown plate and the lower support plate and be provided with shear studs, subtract shock insulation spherical crown plate bottom surface outer rim and be provided with the girder falling back-up ring.
Its additional technical feature is: described upper bracket plate basal slip direction two ends are provided with outer spacing blend stop, subtract shock insulation spherical crown plate top surface glide direction two ends and are provided with interior spacing blend stop, and the glide direction both sides are provided with gib block; Described girder falling back-up ring inner edge or lower support plate top outer rim are provided with the rubber shock-absorbing ring; The cross section of described rubber shock-absorbing ring is rectangle, rubber shock-absorbing ring and girder falling back-up ring or lower support plate is bonding or screw fastening; Described shear studs is that annular is uniform a plurality of, and the shearing cross section of shear studs be the assembly of circle, rectangle or circle and rectangle; The edge of described lower support plate is provided with a plurality of grooves, the notch shape of groove is rectangle or semicircle, stone bolt is fixed on groove by connecting bolt, the link of stone bolt assembly with rectangle semicircle or semicircle for the rectangle that is complementary with groove.
A kind of shock insulation girder falling bearing that subtracts provided by the utility model, be provided with between spherical crown plate and the lower support plate and subtract shock insulation spherical crown plate, subtract between shock insulation spherical crown plate and spherical crown plate and the lower support plate and be provided with the sphere friction pair, subtract between shock insulation spherical crown plate and the lower support plate and be provided with shear studs, subtract shock insulation spherical crown plate bottom surface outer rim and be provided with the girder falling back-up ring.Subtract the effect that shock insulation girder falling bearing can play common bearing at ordinary times, the upper load that is about to bridge or other buildings passes to substructure uniformly, absorbs simultaneously superstructure because creeping and the caused telescopic displacement of variations in temperature and rotation.When earthquake occurs, the horizontal force that bridge bears is during greater than the shear studs shear strength, shear studs is cut off, and stopping means is opened, and bearing is by subtracting the relative sliding of arc surface between shock insulation spherical crown plate and spherical crown plate and the lower support plate, beam body and pier are kept apart, make most of earthquake energy be delivered to the beam body from pier, and the kinetic energy of earthquake generation is converted to potential energy, simultaneously, in slipping, frictional resistance consumes again a part of earthquake energy; Reach like this damping effect, prolonged earthquake period; And potential energy can form restoring force, and bearing is resetted.When support movement arrived maximum shock insulation displacement, cushioning effect was played in girder falling back-up ring and lower support plate extruding, and simultaneously girder falling back-up ring prevention subtracts shock insulation spherical crown plate continuation slip and plays the girder falling effect.Like this, subtract shock insulation girder falling bearing and can play and subtract shock insulation, girder falling effect, solved technically lack good endurance, restoring force strong, have the vibration absorption and isolation support of girder falling function for the difficult problem on the engineering during displacement Datong District after bending.Economically, use to subtract shock insulation girder falling bearing, structure is taken precautions against natural calamities, especially the antidetonation of bridge has very important significance.Subtract the simple in structure of shock insulation girder falling bearing, subtract the shock insulation principle clear and definite, good endurance itself has the girder falling function.
And upper bracket plate basal slip direction two ends are provided with outer spacing blend stop, subtract shock insulation spherical crown plate top surface glide direction two ends and are provided with interior spacing blend stop, and the glide direction both sides are provided with gib block.When bridge normally moves, outer spacing blend stop plays the effect of the warm variable displacement of restriction, when earthquake occured horizontal force that bridge simultaneously bears greater than the shear studs shear strength, outer spacing blend stop contacted with interior spacing blend stop on subtracting shock insulation spherical crown plate, and drive subtracts shock insulation spherical crown plate and cuts off shear studs.Girder falling back-up ring inner edge or lower support plate top outer rim are provided with the rubber shock-absorbing ring, occur in earthquake, alleviate when the girder falling back-up ring contacts with lower support plate and impact, and consume a part of earthquake energy.As required, the cross section of rubber shock-absorbing ring is rectangle, rubber shock-absorbing ring and girder falling back-up ring or lower support plate is bonding or screw fastening.Shear studs is that annular is uniform a plurality of, and the shearing cross section of shear studs can be the assembly of circle, rectangle or circle and rectangle.The edge of lower support plate is provided with a plurality of grooves, and the notch shape of groove is rectangle or semicircle, and stone bolt is fixed on groove by connecting bolt, the link of stone bolt assembly with rectangle semicircle or semicircle for the rectangle that is complementary with groove.Like this, lower support plate is comprised of with a plurality of identical grooves the identical circular arc of a plurality of radiuses, and stone bolt is installed in groove, makes the lower support plate outer level and smooth, lower support plate is plane-plane contact with the rubber shock-absorbing loop contacts that subtracts shock insulation spherical crown plate when having guaranteed earthquake, is conducive to damping.And foundation bolt structure is connected by connecting bolt with the lower support plate groove from foundation bolt structure was different in the past.
Description of drawings
Fig. 1 be the utility model a kind of subtract shock insulation girder falling bearing along bridge to structural representation;
Fig. 2 is a kind of structural representation that subtracts shock insulation girder falling bearing direction across bridge;
Fig. 3 is the structural representation of shear studs;
Fig. 4 is the first A-A sectional view of shear studs;
Fig. 5 is the second A-A sectional view of shear studs;
Fig. 6 is the third A-A sectional view of shear studs;
Fig. 7 is the structural representation of stone bolt
Fig. 8 is the first top view of stone bolt;
Fig. 9 is the second top view of stone bolt;
Figure 10 is the third top view of stone bolt;
Figure 11 is the first structure chart of lower support plate;
Figure 12 is the second structure chart of lower support plate;
Figure 13 is the assembly drawing of lower support plate and stone bolt.
The specific embodiment
Below in conjunction with accompanying drawing a kind of structure that subtracts shock insulation girder falling bearing provided by the utility model is described in further details.
As shown in Figure 1, a kind of shock insulation girder falling bearing that subtracts provided by the utility model comprises upper bracket plate 1, the bottom surface is the spherical crown plate 2 of epirelief sphere, end face is upper concave spherical surface, the bottom surface be lower protruding sphere subtract shock insulation spherical crown plate 3, end face is the lower support plate 4 of lower concave spherical surface, stone bolt 5,2 of upper bracket plate 1 and spherical crown plates are provided with flat frictional pair 6, spherical crown plate 2 and subtract 3 of shock insulation spherical crown plates, subtract 4 of shock insulation spherical crown plate 3 and lower support plate and be respectively arranged with the sphere friction pair 7 that corrosion resistant plate or chromium coating and modified Teflon plate form, 8, subtract between shock insulation spherical crown plate 3 and the lower support plate 4 and be provided with shear studs 9, shear studs 9 is that annular is uniform a plurality of, subtract shock insulation spherical crown plate 3 bottom surface outer rims and be provided with girder falling back-up ring 10, girder falling back-up ring 10 inner edges are provided with rubber shock-absorbing ring 11, the cross section of rubber shock-absorbing ring 11 is rectangle, rubber shock-absorbing ring 11 is bonding or screw fastening with the girder falling back-up ring, upper bracket plate 1 basal slip direction two ends are provided with outer spacing blend stop 12, subtract shock insulation spherical crown plate 3 end face glide direction two ends and are provided with interior spacing blend stop 13.As shown in Figure 2, subtract shock insulation spherical crown plate 3 glide direction both sides and be provided with gib block 14.As shown in Figure 3, shear studs 9 is provided with shear area 15.As shown in Figure 4, the shearing cross section of the shear area 15 of shear studs is circular.As shown in Figure 5, the shearing cross section of the shear area 15 of shear studs is rectangle.As shown in Figure 6, the shearing cross section of the shear area 15 of shear studs is the assembly of circular and rectangle.As shown in Figure 7, the link of stone bolt 5 is provided with screw 16.As shown in Figure 8, the link of stone bolt 5 is overlooked and is rectangle.As shown in Figure 9, the link of stone bolt 5 is overlooked and is semicircle.As shown in figure 10, the link of stone bolt 5 is overlooked the assembly into semicircle and rectangle.As shown in figure 11, the edge of lower support plate 4 is provided with a plurality of grooves 17, and the notch shape of groove 17 is rectangle.As shown in figure 12, the edge of lower support plate 4 is provided with a plurality of grooves 17, and the notch shape of groove 17 is semicircle.As shown in figure 13, stone bolt 5 is fixed on edge groove 17 places of lower support plate 4 by connecting bolt 18.
A kind of shock insulation girder falling bearing that subtracts provided by the utility model, can play at ordinary times the effect of common bearing, the upper load that is about to bridge or other buildings passes to substructure uniformly, absorbs simultaneously superstructure because creeping and the caused telescopic displacement of variations in temperature and rotation.When earthquake occurs, the horizontal force that bridge bears is during greater than shear studs 9 shear strength, shear studs 9 is cut off, and stopping means is opened, and bearing is by subtracting the relative sliding of arc surface between shock insulation spherical crown plate 3 and spherical crown plate 2 and the lower support plate 4, beam body and pier are kept apart, make most of earthquake energy be delivered to the beam body from pier, and the kinetic energy of earthquake generation is converted to potential energy, simultaneously, in slipping, frictional resistance consumes again a part of earthquake energy; Reach like this damping effect, prolonged earthquake period; And potential energy can form restoring force, and bearing is resetted.When support movement arrived maximum shock insulation displacement, cushioning effect was played in girder falling back-up ring 10 and lower support plate 4 extruding, and simultaneously girder falling back-up ring 10 preventions subtract the 3 continuation slips of shock insulation spherical crown plate and play the girder falling effect.Like this, subtract shock insulation girder falling bearing and can play and subtract shock insulation, girder falling effect, solved technically lack good endurance, restoring force strong, have the vibration absorption and isolation support of girder falling function for the difficult problem on the engineering during displacement Datong District after bending.Economically, use to subtract shock insulation girder falling bearing, structure is taken precautions against natural calamities, especially the antidetonation of bridge has very important significance.Subtract the simple in structure of shock insulation girder falling bearing, subtract the shock insulation principle clear and definite, good endurance itself has the girder falling function.
And upper bracket plate 1 basal slip direction two ends are provided with outer spacing blend stop 12, subtract shock insulation spherical crown plate 3 end face glide direction two ends and are provided with interior spacing blend stop 13, subtract shock insulation spherical crown plate 3 glide direction both sides and are provided with gib block 14.When bridge normally moves, outer spacing blend stop 12 plays the effect of the warm variable displacement of restriction, when earthquake occurs horizontal force that bridge simultaneously bears greater than shear studs 9 shear strength, outer spacing blend stop 12 contacts with interior spacing blend stop 13 on subtracting shock insulation spherical crown plate 3, drives to subtract shock insulation spherical crown plate 3 and cut off shear studs 9.Girder falling back-up ring 10 inner edges or lower support plate 4 top outer rims are provided with rubber shock-absorbing ring 11, occur in earthquake, alleviate when girder falling back-up ring 10 contacts with lower support plate 4 and impact, and consume a part of earthquake energy.As required, the cross section of rubber shock-absorbing ring 11 is rectangle, rubber shock-absorbing ring 11 and girder falling back-up ring 10 or lower support plate 4 bonding or screw fastenings.Shear studs 9 is that annular is uniform a plurality of, and the shearing cross section of shear studs 9 can be the assembly of circle, rectangle or circle and rectangle.The edge of lower support plate 4 is provided with a plurality of grooves 17, the notch shape of groove 17 is rectangle or semicircle, stone bolt 5 is fixed on groove 17 places by connecting bolt 18, the link of stone bolt 5 assembly with rectangle semicircle or semicircle for the rectangle that is complementary with groove 17.Like this, lower support plate 4 is comprised of with a plurality of identical grooves 17 the identical circular arc of a plurality of radiuses, and stone bolt 5 is installed in groove 17 places, makes lower support plate 4 outers level and smooth, lower support plate 4 contacts with the rubber shock-absorbing ring 11 that subtracts shock insulation spherical crown plate 3 and is plane-plane contact when having guaranteed earthquake, is conducive to damping.And stone bolt 5 structures are connected by connecting bolt 18 with lower support plate groove 17 from foundation bolt structure was different in the past.
A kind of shock insulation girder falling bearing that subtracts provided by the utility model is not limited only to said structure, but no matter which kind of form so long as structure is identical with the utility model, all falls into protection domain of the present utility model.
Claims (6)
1. one kind subtracts shock insulation girder falling bearing, comprise the upper bracket plate, the bottom surface is the spherical crown plate of epirelief sphere, end face is the lower support plate of lower concave spherical surface, stone bolt, be provided with flat frictional pair between upper bracket plate and spherical crown plate, it is characterized in that: be provided with between described spherical crown plate and the lower support plate and subtract shock insulation spherical crown plate, subtracting shock insulation spherical crown plate top surface is the upper concave spherical surface that is complementary with the epirelief sphere, the bottom surface is the lower protruding sphere that is complementary with lower concave spherical surface, spherical crown plate and subtracting between shock insulation spherical crown plate, subtract and be respectively arranged with the sphere friction pair that corrosion resistant plate or chromium coating and modified Teflon plate form between shock insulation spherical crown plate and lower support plate, subtract between shock insulation spherical crown plate and the lower support plate and be provided with shear studs, subtract shock insulation spherical crown plate bottom surface outer rim and be provided with the girder falling back-up ring.
2. a kind of shock insulation girder falling bearing that subtracts according to claim 1, it is characterized in that: described upper bracket plate basal slip direction two ends are provided with outer spacing blend stop, subtract shock insulation spherical crown plate top surface glide direction two ends and be provided with interior spacing blend stop, the glide direction both sides are provided with gib block.
3. a kind of shock insulation girder falling bearing that subtracts according to claim 1, it is characterized in that: described girder falling back-up ring inner edge or lower support plate top outer rim are provided with the rubber shock-absorbing ring.
4. a kind of shock insulation girder falling bearing that subtracts according to claim 3, it is characterized in that: the cross section of described rubber shock-absorbing ring is rectangle, rubber shock-absorbing ring and girder falling back-up ring or lower support plate is bonding or screw fastening.
5. a kind of shock insulation girder falling bearing that subtracts according to claim 1 is characterized in that: described shear studs is uniform a plurality of of annular, and the shearing cross section of shear studs be the assembly of circle, rectangle or circle and rectangle.
6. a kind of shock insulation girder falling bearing that subtracts according to claim 1, it is characterized in that: the edge of described lower support plate is provided with a plurality of grooves, the notch shape of groove is rectangle or semicircle, stone bolt is fixed on groove by connecting bolt, the link of stone bolt assembly with rectangle semicircle or semicircle for the rectangle that is complementary with groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220630689 CN202899031U (en) | 2012-11-26 | 2012-11-26 | Seismic mitigation and isolation anti-girder-fall supporting seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220630689 CN202899031U (en) | 2012-11-26 | 2012-11-26 | Seismic mitigation and isolation anti-girder-fall supporting seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202899031U true CN202899031U (en) | 2013-04-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220630689 Expired - Lifetime CN202899031U (en) | 2012-11-26 | 2012-11-26 | Seismic mitigation and isolation anti-girder-fall supporting seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202899031U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103966948A (en) * | 2014-05-10 | 2014-08-06 | 燕斌 | Spherical support capable of preventing beam from falling |
| CN108086142A (en) * | 2017-12-28 | 2018-05-29 | 中交公路养护工程技术有限公司 | A kind of enclosure-type girder falling laminated rubber bearing |
| CN114808673A (en) * | 2022-03-31 | 2022-07-29 | 中铁第四勘察设计院集团有限公司 | Annular elastic shock absorption and isolation support |
-
2012
- 2012-11-26 CN CN 201220630689 patent/CN202899031U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103966948A (en) * | 2014-05-10 | 2014-08-06 | 燕斌 | Spherical support capable of preventing beam from falling |
| CN108086142A (en) * | 2017-12-28 | 2018-05-29 | 中交公路养护工程技术有限公司 | A kind of enclosure-type girder falling laminated rubber bearing |
| CN114808673A (en) * | 2022-03-31 | 2022-07-29 | 中铁第四勘察设计院集团有限公司 | Annular elastic shock absorption and isolation support |
| CN114808673B (en) * | 2022-03-31 | 2023-03-17 | 中铁第四勘察设计院集团有限公司 | Annular elastic shock absorption and isolation support |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: The 053000 Northern Industrial Base Development Zone of Hengshui City, Hebei Province Rubber Road No. 13 Patentee after: HEBEI BAOLI ENGINEERING EQUIPMENT GROUP Co.,Ltd. Address before: 053000 Heping West Road, Hebei, Hengshui, No. 396 Patentee before: HENGSHUI BAOLI ENGINEERING RUBBER Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130424 |