CN218090494U

CN218090494U - Novel bridge tension-compression friction pendulum vibration reduction and isolation support

Info

Publication number: CN218090494U
Application number: CN202222458899.4U
Authority: CN
Inventors: 李让卫; 王银芳; 蒲吉标; 张涛; 邱普蓁; 江涛
Original assignee: Sichuan Zero Kilometer Rail Transit Equipment Co ltd
Current assignee: Sichuan Zero Kilometer Rail Transit Equipment Co ltd
Priority date: 2022-09-15
Filing date: 2022-09-15
Publication date: 2022-12-20
Anticipated expiration: 2032-09-15

Abstract

The utility model discloses a novel bridge tension-compression friction pendulum vibration reduction and isolation support, which comprises an upper seat plate, wherein the bottom of the upper seat plate is provided with an upper shock absorption curved surface which is upwards sunken and is arc-shaped, an upper curved surface stainless steel plate is connected in the upper shock absorption curved surface, the front end and the rear end of the upper seat plate are respectively provided with an upper tensile plate, the bottom of the upper tensile plate is provided with an arc-shaped lug, an arc-shaped groove is formed between the arc-shaped lug and the upper shock absorption curved surface, and the bottom of the arc-shaped lug is provided with an upper arc-shaped surface stainless steel plate; the utility model discloses draw and press friction pendulum to subtract isolation bearing and combine the isolation performance and the tensile adaptability of subtracting superior isolation performance, effectively improved the comprehensive functionality of support product, enlarged its application scope, promoted the friction pendulum and subtracted the superiority of isolation class support product, utilized its application promotion in bridge engineering. The device novel structure, environmental protection, simple to operate, safe and reliable, the maintenance management cost is low, and comprehensive properties is superior, and the sexual valence is than higher.

Description

Novel bridge tension-compression friction pendulum vibration reduction and isolation support

Technical Field

The utility model relates to a bridge beam supports technical field specifically is a novel bridge draws and presses friction pendulum to subtract isolation bearing.

Background

The bridge bearing is a key structural component used for connecting a beam body and an abutment in bridge construction, has the functions of fixing an upper structure on the abutment, bearing various forces acting on the upper structure, and reliably transmitting various loads, structural resonance response, earthquake response, vehicle vibration response, wind vibration response, noise response and the like to the abutment; under the action of load, temperature, concrete shrinkage and creep, the support can adapt to the corners and displacement of the upper structure, so that the upper structure can deform freely without generating additional internal force, various vibration responses, resonance responses, earthquake responses and the like are smoothly transmitted to the abutment, the structural resonance aggravation is avoided, and the safe operation of the bridge is protected.

The bridge construction history of China is long, the development is rapid, and the bridge construction method can be divided into the following steps according to the stress characteristics: girder bridges, arch bridges, suspension bridges, cable-stayed bridges, steel bridges and combined system bridges. In recent years, the technology of super-large suspension bridges and cable-stayed bridges across rivers, canyons and the like is a major breakthrough in domestic major bridge engineering. Meanwhile, high-speed bridges, overhead bridges, track bridges and high-speed railway bridges around cities are popularized and applied in bridge construction in China, corresponding bridge support technology is rapidly developed, and especially tension and compression supports, seismic isolation supports and the like play an important role in the construction of large and medium bridges. The geographical environment and the geological environment of a cross-river, a cross-canyon suspension bridge and a cable-stayed bridge are harsh, a high-speed bridge, an overhead bridge and an overpass around a city are close to towns and even in a luxurious city area, and the bridge position curvature is small due to the influence of geographical space. Various bridges put higher requirements on the performances of shock resistance, shock absorption and isolation, tensile strength, beam falling prevention, large displacement and the like of the support.

The existing friction pendulum seismic isolation and reduction support has excellent seismic isolation and large displacement performance, the technology is mature and popularized and applied, but the existing friction pendulum seismic isolation and reduction support still cannot meet the tensile property of a beam body, the function of preventing the beam from falling has limitation, and the comprehensive performance requirement of a bridge is difficult to meet in the construction practice, particularly the requirement of the seismic isolation and reduction performance and the tensile and beam falling prevention performance at the position of a high-speed bridge, an overhead bridge and an overpass with small curvature, which is surrounded by the far end of a cable bridge, is met.

Therefore this scheme provides a novel draw pressure friction pendulum subtracts isolation bearing.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel bridge is drawn and is pressed friction pendulum and subtract isolation bearing for solve the problem that proposes among the above-mentioned background art.

The utility model discloses a following technical scheme realizes:

a novel bridge tension-compression friction pendulum vibration reduction and isolation support comprises an upper base plate, wherein the bottom of the upper base plate is provided with an upper shock absorption curved surface which is upwards sunken and is arc-shaped, an upper curved surface stainless steel plate is connected in the upper shock absorption curved surface, upper tensile plates are arranged at the front end and the rear end of the upper base plate, an arc-shaped lug is arranged at the bottom of the upper tensile plate, an arc-shaped groove is formed between the arc-shaped lug and the upper shock absorption curved surface, an upper arc-shaped surface stainless steel plate is arranged at the bottom of the arc-shaped lug, an upper arc-shaped stainless steel plate which is adaptive to the arc-shaped surface of the arc-shaped groove is connected to the side wall of the arc-shaped groove, a double curved surface body is further arranged below the upper base plate, a curved surface seam allowance which is adaptive to the upper curved surface stainless steel plate is arranged at the upper part of the double curved surface body, and tensile slide blocks which are clamped with the upper tensile plates are arranged at the positions of the front end and the rear end which correspond to the upper tensile plates, tensile slider side is equipped with the upside arc slide corresponding with upside arc corrosion resistant plate, is equipped with the last cambered surface slide identical with the arc lug in the bottom of tensile slider, and goes up cambered surface slide and the corresponding and clearance fit of last cambered surface corrosion resistant plate, has inlayed the curved surface antifriction plate in the curved surface tang, be equipped with the spherical nut through holding the chamber in the middle of the top of the hyperboloid body, the bottom that holds the chamber is inlayed through the spherical tang and is had annular antifriction plate, spherical nut bottom cooperatees through sphere and annular antifriction plate, and its middle part is connected with the tensile bolt through the screw hole, the lower part of the hyperboloid body still is equipped with the concave surface welt rather than bottom cambered surface looks adaptation, concave surface welt top is inlayed through the concave spherical tang and is equipped with the spherical antifriction plate, and the bottom is inlayed and is equipped with down the curved surface antifriction plate, offers the step hole that is used for fixed mounting tensile bolt at the middle part of concave surface welt.

Furthermore, a gap exists between the upper side arc-shaped stainless steel plate and the upper side arc-shaped sliding plate; can have certain clearance through the clearance be convenient for between upside arc corrosion resistant plate and the upside arc slide can be at the support during operation, help promoting the holistic shock insulation performance that subtracts of support.

The lower seat plate is positioned below the concave surface lining plate, a lower curved surface stainless steel plate is welded in the middle of the top of the lower seat plate through a lower shock absorption and isolation curved surface, the lower shock absorption and isolation curved surface is downwards sunken and is arc-shaped, and the lower curved surface stainless steel plate is attached to the lower curved surface wear-resistant plate; the whole assembly precision of support is convenient for promote, makes its reliable operation stable.

Furthermore, lower tension plates are further arranged on two sides of the lower seat plate, a stop block with an arc-shaped bottom is arranged on the side surface of each lower tension plate, the bottom of each stop block is arc-shaped, a concave arc-shaped clamping groove is formed between the bottom of each stop block and the bottom of the lower seat plate, clamping plates matched with the clamping grooves are arranged on two sides of the concave lining plate, the side surfaces of the clamping grooves are connected with lower arc-shaped stainless steel plates matched with the clamping grooves in an arc shape, lower arc-shaped sliding plates are further arranged at positions, corresponding to the lower arc-shaped stainless steel plates, of the side surfaces of the clamping plates, and gaps exist between the lower arc-shaped sliding plates and the lower arc-shaped stainless steel plates; the support is in a safe tensile state within the shock insulation displacement range, and the normal working state of the bridge body is ensured.

Furthermore, a lower cambered surface stainless steel plate is further arranged at the bottom of the stop block, a lower cambered surface sliding plate is arranged at the top of the clamping plate and at the position corresponding to the lower cambered surface stainless steel plate, and the lower cambered surface sliding plate corresponds to the cambered surface of the lower cambered surface stainless steel plate and has a gap.

Specifically, upper beam falling prevention limiting plates are further mounted on two sides of the upper seat plate.

Specifically, the front end and the rear end of the lower seat plate are also provided with lower anti-falling beam limiting plates.

Furthermore, the upper anti-falling beam limiting plate and the lower anti-falling beam limiting plate are respectively installed with the upper seat plate and the lower seat plate through fastening bolts; the integral structural rigidity of the support is improved, so that the support works stably and reliably.

Preferably, the upper shock absorption and isolation curved surface and the upper curved surface stainless steel plate and the lower shock absorption and isolation curved surface and the lower curved surface stainless steel plate are connected through argon arc welding, and the upper curved surface stainless steel plate and the upper shock absorption and isolation curved surface are welded and then are kept smooth without bulges and wrinkles; reduce its frictional resistance, avoid the support whole when vibrations, can lead to the vice relative action of arc friction and release vibrations, effectively solved friction pendulum class support large displacement when subtracting the shock insulation operating mode, the direction problem under the support sliding structure position change state satisfies the support and all is in safe tensile state in shock insulation displacement range, ensures the normal operating condition of the roof beam body.

Compared with the prior art, the utility model, following advantage and beneficial effect have:

1. the utility model discloses a set up upper shock attenuation curved surface and lower shock attenuation curved surface at upper seat board and lower seat board respectively, and set up upper surface corrosion resistant plate and lower curved surface corrosion resistant plate in upper shock attenuation curved surface and lower shock attenuation curved surface respectively, so that its camber is very high with the degree of contact of hyperboloid body, improved whole sphere precision, greatly reduced the wearing and tearing consumption of upper surface antifriction plate and lower curved surface antifriction plate, effectively improved the holistic life of support;

2. the utility model arranges the spherical nut in the hyperboloid body to realize reliable force transmission under the tension of the center, strong adaptability of the internal structure of the support, flexible rotation, no interference and internal stress concentration, and guarantee the assembly precision and reliable and stable force transmission;

3. in the utility model, the arc friction pair is formed by the arrangement of the upper tensile plate, the lower tensile plate and the hyperboloid concave surface lining plate, so that the guide problem of the support sliding structure in the position change state is effectively solved when the friction pendulum support is in a large-displacement seismic isolation and reduction working condition, the support is in a safe tensile state in a seismic isolation displacement range, and the normal working state of a beam body is ensured;

to sum up, the utility model discloses draw and press friction pendulum to subtract isolation bearing and combine together the isolation performance and the tensile adaptability that subtract of superior, effectively improved the support product comprehensive functionality, enlarged its application scope, promoted the friction pendulum and subtracted the superiority of isolation type support product, do benefit to its application promotion in bridge engineering. The device novel structure, environmental protection, simple to operate, safe and reliable, the maintenance management cost is low, and comprehensive properties is superior, and the sexual valence is than higher.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principle of the invention. In the drawings:

FIG. 1 is a schematic view of the structure of the present invention;

FIG. 2 is a schematic side view of the present invention;

FIG. 3 is an enlarged schematic view of the local structure at the position A of the present invention;

fig. 4 is an enlarged schematic view of the local structure at the position B of the present invention.

In the drawings, the names of the parts corresponding to the reference numerals are as follows:

1-an upper seat board; 2-upper curved surface stainless steel plate; 3, mounting a tensile plate; 4-upper side arc stainless steel plate; 5-a hyperboloid; 6-tensile slide block; 7-upper side arc-shaped sliding plate; 8-sliding plate with upper arc surface; 9-upper curved surface wear-resisting plate; 10-a spherical nut; 11-an annular wear plate; 12-a tensile bolt; 13-concave lining board; 14-spherical wear plates; 15-lower curved surface wear plate; 16-a lower seat plate; 17-lower curved stainless steel plate; 18-lower tensile plate; 19-a clamping plate; 20-lower side arc stainless steel plate; 21-lower arc-shaped sliding plate; 22-upper beam falling prevention limit plate; 23-lower anti-falling beam limiting plate; 24-upper cambered surface stainless steel plate; 25-lower cambered surface stainless steel plate; 26-lower arc surface slide plate.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.

First, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Examples

Referring to fig. 1 to 4, the present embodiment provides a novel bridge tension-compression friction pendulum seismic mitigation and isolation bearing, which includes an upper seat plate 1, an upper shock-absorbing curved surface which is upwardly concave and curved is disposed at the bottom of the upper seat plate 1, an upper curved surface stainless steel plate 2 is connected in the upper shock absorption curved surface, the front end and the rear end of the upper seat plate 1 are respectively provided with an upper tensile plate 3, the bottom of the upper tensile plate 3 is provided with an arc-shaped convex block, an arc-shaped groove is formed between the arc-shaped convex block and the upper shock absorption curved surface, the bottom of the arc-shaped convex block is provided with an upper arc-shaped surface stainless steel plate 24, the side wall of the arc-shaped groove is connected with an upper side arc-shaped stainless steel plate 4 which is adaptive to the arc-shaped surface of the arc-shaped groove, a hyperboloid body 5 is arranged below the upper seat plate 1, the upper part of the hyperboloid body 5 is provided with a curved surface seam allowance which is adaptive to the upper curved surface stainless steel plate 2, the front end and the rear end of the hyperboloid body are provided with a tensile slide block 6 which is clamped with the upper tensile plate 3 corresponding to the position of the upper tensile plate 3, the side surface of the tensile slide block 6 is provided with an upper side arc-shaped slide plate 7 which is corresponding to the upper side arc-shaped stainless steel plate 4, the bottom of the tensile slide block 6 is provided with an upper cambered surface slide plate 8 which is inosculated with the cambered convex block, and the upper cambered surface slide plate 8 corresponds to the upper cambered surface stainless steel plate 24 and is in clearance fit with the upper cambered surface stainless steel plate, an upper curved surface wear-resisting plate 9 is embedded in the curved surface seam allowance, a spherical nut 10 is arranged in the middle of the top of the hyperboloid body 5 through a containing cavity, an annular wear-resisting plate 11 is embedded in the bottom of the containing cavity through the spherical surface seam allowance, the bottom of the spherical nut 10 is matched with the annular wear-resisting plate 11 through a spherical surface, a tensile bolt 12 is connected to the middle of the spherical nut 10 through a threaded hole, a concave surface lining plate 13 matched with the bottom cambered surface of the hyperboloid body 5 is further arranged at the lower part of the hyperboloid body, a spherical surface wear-resisting plate 14 is embedded in the top of the concave surface lining plate 13 through a concave spherical surface seam allowance, and a lower curved surface wear-resisting plate 15 is embedded in the bottom of the concave surface lining plate, a stepped hole for fixing and assembling the tensile bolt 12 is formed in the middle of the concave lining plate 13.

It should be noted here that, this scheme is through setting up shock attenuation curved surface and lower shock attenuation curved surface at last bedplate and lower bedplate respectively, and set up curved surface corrosion resistant plate and lower curved surface corrosion resistant plate in last shock attenuation curved surface and lower shock attenuation curved surface respectively, so that the degree of curvature of its curved surface and the degree of tangency of hyperboloid body are very high, whole sphere precision has been improved, the wearing and tearing consumption of curved surface antifriction plate and lower curved surface antifriction plate has greatly been reduced, the holistic life of support has effectively been improved, and it combines superior shock absorption and isolation performance and tensile adaptability together, the comprehensive functionality of support product has effectively been improved, its application scope has been enlarged, the superiority of friction pendulum shock absorption and isolation type support product has been promoted, do benefit to its application and popularization in bridge engineering. The device is novel in structure, environment-friendly, convenient to install, safe, reliable, low in maintenance and management cost, excellent in comprehensive performance and high in cost performance.

In the above embodiment, there is a gap between the upper arc stainless steel plate 4 and the upper arc sliding plate 7; through the clearance be convenient for between upside arc corrosion resistant plate 4 and the upside arc slide 7 can be at the support during operation, have certain clearance, help promoting the holistic shock insulation performance that subtracts of support.

In the above embodiment, the lower seat plate 16 is further included, the lower seat plate 16 is located below the concave lining plate 13, and a lower curved surface stainless steel plate 17 is welded in the middle of the top of the lower seat plate through a lower seismic isolation and reduction curved surface, the lower seismic isolation and reduction curved surface is downward concave and is arc-shaped, and the lower curved surface stainless steel plate 17 is attached to the lower curved surface wear-resisting plate 15; the whole assembly precision of support is convenient for promote, makes its reliable operation stable.

In the above embodiment, the lower seat plate 16 is further provided with lower tension plates 18 on two sides, the side surfaces of the lower tension plates 18 are provided with stoppers with arc-shaped bottoms, the bottoms of the stoppers are arc-shaped, and concave arc-shaped clamping grooves are formed between the bottoms of the stoppers and the bottom of the lower seat plate 16, the clamping plates 19 adapted to the clamping grooves are arranged on two sides of the concave lining plate 13, the side surfaces of the clamping grooves are connected with lower arc-shaped stainless steel plates 20 adapted to the clamping grooves, lower arc-shaped sliding plates 21 are further arranged at positions, corresponding to the lower arc-shaped stainless steel plates 20, of the side surfaces of the clamping plates 19, and gaps are formed between the lower arc-shaped sliding plates 21 and the lower arc-shaped stainless steel plates 20; the support is in a safe tensile state within the shock insulation displacement range, and the normal working state of the bridge body is ensured.

In the above embodiment, the bottom of the stopper is further provided with a lower cambered surface stainless steel plate 25, the top of the clamping plate 19 is provided with a lower cambered surface sliding plate 26 at a position corresponding to the lower cambered surface stainless steel plate 25, and the lower cambered surface sliding plate 26 corresponds to the cambered surface of the lower cambered surface stainless steel plate 25 and has a gap.

In the above embodiment, the upper seat plate 1 is further provided with upper anti-drop beam limiting plates 22 at both sides thereof, the lower seat plate 16 is further provided with lower anti-drop beam limiting plates 23 at both front and rear ends thereof, and both the upper anti-drop beam limiting plate and the lower anti-drop beam limiting plates 23 are respectively mounted with the upper seat plate 1 and the lower seat plate 16 through fastening bolts; the integral structural rigidity of the support is improved, so that the support works stably and reliably.

In the above embodiment, the upper shock absorption and isolation curved surface and the upper curved surface stainless steel plate 2 and the lower shock absorption and isolation curved surface and the lower curved surface stainless steel plate 17 are connected by argon arc welding, and the upper curved surface stainless steel plate 2 and the upper shock absorption and isolation curved surface are welded and then kept smooth without bulges and wrinkles and the lower curved surface stainless steel plate 17 are welded and then kept smooth; reduce its frictional resistance, avoid the support whole when vibrations, can lead to the vice relative action of arc friction and release vibrations, effectively solved friction pendulum class support large displacement when subtracting the shock insulation operating mode, the direction problem under the support sliding structure position change state satisfies the support and all is in safe tensile state in shock insulation displacement range, ensures the normal operating condition of the roof beam body.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a novel bridge draws pressure friction pendulum to subtract isolation bearing, includes upper mounting plate (1), its characterized in that, the bottom of upper mounting plate (1) is equipped with and makes progress the sunken curved shock attenuation curved surface that is curved, has curved surface corrosion resistant plate (2) in the connection of last shock attenuation curved surface, just both ends all are equipped with tensile board (3) around upper mounting plate (1), the bottom of going up tensile board (3) is equipped with the arc lug, and forms the arc wall between arc lug and the last shock attenuation curved surface, the bottom of arc lug is equipped with cambered surface corrosion resistant plate (24), has upside arc corrosion resistant plate (4) that suits with its curved surface in the lateral wall welding of arc wall, still is equipped with hyperboloid body (5) in the below of upper mounting plate (1), the upper portion of arc body (5) is equipped with the curved surface tang that suits with upper curved surface corrosion resistant plate (2), and its front and back both ends correspond upper tensile board (3) position department and be equipped with tensile slider (6) of joint mutually with last tensile board (3), slider (6) side is equipped with tensile board (8) that the corresponding cambered surface corrosion resistant plate (6) of cambered surface corrosion resistant slide (8) and cambered surface (6) fit on the arc sliding plate (6), and cambered surface internal clearance fit.

2. The novel bridge tension-compression friction pendulum seismic mitigation and isolation bearing as claimed in claim 1, wherein a spherical nut (10) is arranged in the middle of the top of the hyperboloid body (5) through a containing cavity, an annular wear-resisting plate (11) is inlaid in the bottom of the containing cavity through a spherical spigot, the bottom of the spherical nut (10) is matched with the annular wear-resisting plate (11) through a spherical surface, and the middle of the spherical nut is connected with a tensile bolt (12) through a threaded hole, a concave surface lining plate (13) matched with a bottom cambered surface of the hyperboloid body (5) is further arranged on the lower portion of the hyperboloid body, a spherical wear-resisting plate (14) is inlaid in the top of the concave surface lining plate (13) through a concave spherical spigot, a lower curved surface wear-resisting plate (15) is inlaid in the bottom of the concave surface lining plate (13), and a step hole for fixedly assembling the tensile bolt (12) is formed in the middle of the concave surface lining plate (13).

3. The novel bridge tension and compression friction pendulum seismic mitigation and isolation bearing is characterized in that a gap exists between the upper side arc-shaped stainless steel plate (4) and the upper side arc-shaped sliding plate (7).

4. The novel bridge tension-compression friction pendulum seismic isolation bearing as claimed in claim 1, further comprising a lower seat plate (16), wherein the lower seat plate (16) is located below the concave surface lining plate (13), a lower curved surface stainless steel plate (17) is welded in the middle of the top of the lower seat plate through a lower seismic isolation curved surface, the lower seismic isolation curved surface is downwards concave and is arc-shaped, and the lower curved surface stainless steel plate (17) is attached to the lower curved surface wear-resisting plate (15).

5. The novel bridge tension and compression friction pendulum seismic mitigation and absorption and isolation support is characterized in that lower tensile plates (18) are further arranged on two sides of a lower base plate (16), a stop block with an arc-shaped bottom is arranged on the side face of each lower tensile plate (18), a concave arc-shaped clamping groove is formed between the bottom of each stop block and the bottom of the lower base plate (16), clamping plates (19) matched with the clamping grooves are arranged on two sides of a concave lining plate (13), lower arc-shaped stainless steel plates (20) matched with the clamping grooves in an arc shape are connected to the side faces of the clamping grooves, lower arc-shaped sliding plates (21) are further arranged on the side faces of the clamping plates (19) corresponding to the lower arc-shaped stainless steel plates (20), and gaps exist between the lower arc-shaped sliding plates (21) and the lower arc-shaped stainless steel plates (20).

6. The novel bridge tension-compression friction pendulum seismic isolation bearing as claimed in claim 5, wherein a lower cambered surface stainless steel plate (25) is further arranged at the bottom of the stop block, a lower cambered surface sliding plate (26) is arranged at the top of the clamping plate (19) and at a position corresponding to the lower cambered surface stainless steel plate (25), and the lower cambered surface sliding plate (26) corresponds to the cambered surface of the lower cambered surface stainless steel plate (25) and has a gap.

7. The novel bridge tension and compression friction pendulum seismic mitigation and isolation support as claimed in claim 1, wherein upper beam-falling prevention limiting plates (22) are further installed on two sides of the upper base plate (1).

8. The novel bridge tension-compression friction pendulum seismic mitigation and isolation support as claimed in claim 4, wherein lower anti-falling beam limiting plates (23) are further arranged at the front end and the rear end of the lower base plate (16).

9. The novel bridge tension-compression friction pendulum seismic mitigation and isolation support as claimed in claim 7 or 8, wherein the upper anti-falling beam limiting plate (22) and the lower anti-falling beam limiting plate (23) are respectively mounted with the upper bedplate (1) and the lower bedplate (16) through fastening bolts.

10. A novel bridge tension-compression friction pendulum seismic isolation bearing as claimed in claim 1 or 4, wherein the upper seismic isolation curved surface and the upper curved surface stainless steel plate (2) and the lower seismic isolation curved surface and the lower curved surface stainless steel plate (17) are connected through argon arc welding.