CN212956112U - Conversion type friction pendulum vibration reduction and isolation support - Google Patents
Conversion type friction pendulum vibration reduction and isolation support Download PDFInfo
- Publication number
- CN212956112U CN212956112U CN202021064916.0U CN202021064916U CN212956112U CN 212956112 U CN212956112 U CN 212956112U CN 202021064916 U CN202021064916 U CN 202021064916U CN 212956112 U CN212956112 U CN 212956112U
- Authority
- CN
- China
- Prior art keywords
- sphere
- plate
- spherical
- concave surface
- shear ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Vibration Prevention Devices (AREA)
Abstract
The utility model discloses a conversion type friction pendulum subtracts, shock insulation support relates to bridge technical field, the utility model comprises an upper support plate, a concave surface lining plate, a double-spherical-surface body and a lower pendulum which are arranged from top to bottom in sequence, the plane sliding connection between the upper support plate and the concave surface lining plate, the sliding connection between the concave surface lining plate and the upper spherical surface of the double-spherical-surface body and between the lower spherical surface of the double-spherical-surface body and the lower pendulum are all through spherical surfaces, a shear ring is sleeved under the concave surface lining plate, the shear ring is connected on the lower pendulum through a shear pin, and the left side and the right side above the shear ring are both provided with a stop plate which is connected through a spring control mechanism and is used for limiting the relative sliding of the upper support plate; the utility model has the advantages of simple structure, shock attenuation, shock insulation effect reach.
Description
Technical Field
The utility model relates to a bridge technical field, more specifically relate to conversion formula friction pendulum subtracts, isolation bearing technical field.
Background
The friction pendulum type shock absorption and isolation support is also called hyperboloid spherical shock absorption and isolation support in China, is introduced from abroad, and specifically embodies that an advanced shock isolation idea is applied to the technical field of bridge shock resistance. Firstly, the pendulum principle is utilized to change the structural vibration period, and the structural vibration period is far away from the earthquake period in an expected field, so that the influence of the ground vibration energy on the bridge is greatly reduced; secondly, the friction pair consumes energy greatly to achieve the aim of shock absorption; the support has a good automatic reset function, can automatically return to the original design position after an earthquake, does not need external force application, and reduces the difficulty in repairing the support after the earthquake.
The existing industry has two standards for friction pendulum type shock absorption and isolation support structures, namely JT/T927 + 2014 bridge hyperboloid spherical shock absorption and isolation support and JT/T852 + 2013 road bridge friction pendulum type shock absorption and isolation support, but the movable support structures specified by the two standards have advantages and disadvantages.
The movable support structure specified in Standard JT/T927-2014 bridge hyperboloid spherical seismic isolation and reduction support has the advantages of simple structure, clear seismic line and test result according with the design. The disadvantages are that: firstly, the spherical wear-resisting plate of the support is subjected to a transverse horizontal acting force for a long time, so that the service life is greatly reduced and the design service life of the support cannot be reached; secondly, the support is expanded by the temperature of the conventional external force generated by temperature and the like or the vehicle brakes, so that the bridge structure is lifted in a reciprocating manner, the impact coefficient of the bridge is large, and the bridge structure can be damaged by fatigue after long-term action.
The advantages and the disadvantages of a movable support structure specified by standard JT/T852-plus 2013 'highway bridge friction swing type seismic isolation support' are just opposite to those of the former support structure, the problem that a spherical wear-resistant plate is subjected to a transverse horizontal acting force for a long time is solved, the problem of reciprocating lifting of a beam body is also solved, but the seismic resistance routes of friction pendulums are inconsistent, and a section of idle stroke exists in the middle, so that the difference between a test result and a design requirement is great.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: in order to solve the technical problem, the utility model provides a conversion formula friction pendulum subtracts, isolation bearing.
The utility model discloses a realize above-mentioned purpose and specifically adopt following technical scheme:
the utility model provides a conversion formula friction pendulum subtracts, isolation bearing, upper bracket board, concave surface welt, the double sphere body and the lower hem that sets gradually including from the top down, plane sliding connection between upper bracket board and the concave surface welt, on concave surface welt and the double sphere body between the sphere and the double sphere body under all through sphere sliding connection between sphere and the lower hem, concave surface welt below cover is equipped with the shear ring, the shear ring passes through the shear pin junction under on the hem, the shear ring top left and right sides all is provided with the check plate that is used for restricting upper bracket board and concave surface welt relative slip that is connected through spring control mechanism.
Furthermore, the lower surface of the upper support plate is provided with a lower groove, and the sum of the horizontal width of the concave lining plate and the horizontal widths of the two stop plates is equal to the horizontal width of the lower groove.
Further, the left and right sides of concave surface welt outer wall all fixedly is provided with the spring pressure strip, and the spring pressure strip is located between shear ring and the locking plate that corresponds, and every spring control mechanism all includes both ends fixed connection spring between spring pressure strip and the locking plate and the bolt that is used for compression spring, the bolt passes locking plate, spring pressure strip, shear ring in proper order after be connected on the lower hem through the screw thread mode.
Furthermore, through holes for bolts to pass through are formed in the spring pressing plate and the shear ring, the diameter of each through hole is larger than the outer diameter of each bolt, and the through holes for the bolts to pass through in the shear ring are not overlapped with pin holes for the shear pins to pass through in the shear ring.
Further, the concave surface welt passes through plane wear-resisting slide sliding connection with the upper bracket board, concave surface welt lower surface be provided with two spherical surface body on the sphere complex indent sphere one, through I sliding connection of sphere wear-resisting slide between indent sphere one and two spherical surface body's the last sphere, the lower hem upper surface is provided with two spherical surface body's the lower sphere complex indent sphere two, through II sliding connection of sphere wear-resisting slide between indent sphere two and two spherical surface body's the lower sphere.
Furthermore, the upper surface of the concave lining plate is provided with a flat-bottom groove for accommodating the plane wear-resistant sliding plate, and the upper surface and the lower surface of the double-spherical-surface body are respectively provided with an upper arc-shaped groove and a lower arc-shaped groove for installing the spherical wear-resistant sliding plate I and the spherical wear-resistant sliding plate II.
The utility model has the advantages as follows:
1. the utility model has simple structure, the displacement under the normal working condition is plane movement, and the lifting of the bridge can not be generated; under the working condition of earthquake, the plane movement is reliably limited, the horizontal displacement can be achieved only through the curved surface movement, the earthquake-proof route is clear and continuous, and the inflection point of the movable support caused by the idle stroke specified in standard JT/T852 + 2013 friction swinging type earthquake reduction and isolation support for road bridges can not occur.
2. Under normal conditions or E1 seismic conditions, the bearing plane slips. Under the working condition of an E2 earthquake, the shear ring restraint device of the support is damaged, the spring control mechanism is started, the stop plate prevents plane movement, the support is converted into hyperboloid movement from plane sliding movement, or friction pendulum movement, and the support achieves the effects of shock absorption and shock isolation.
Drawings
FIG. 1 is an assembly view of an embodiment of the present invention;
FIG. 2 shows the displacement state of the support under normal working condition or E1 earthquake working condition;
FIG. 3 is a state of a utility model seismic operating mode E1-E2 conversion support;
fig. 4 shows the seismic operating mode support state a of the utility model E2;
fig. 5 shows the utility model E2 earthquake condition support state B;
reference numerals: 1-upper support plate, 2-concave surface lining plate, 3-plane wear-resistant sliding plate, 4-double-spherical surface body, 5-spherical surface wear-resistant sliding plate I, 6-spherical surface wear-resistant sliding plate II, 7-lower pendulum, 8-shear ring, 9-shear pin, 10-bolt, 11-spring, 12-stop plate and 13-spring pressing plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention.
Example 1
As shown in fig. 1, the embodiment provides a conversion type friction pendulum subtracts, isolation bearing, including upper bracket board 1, concave surface welt 2, two spherical surface bodies 4 and lower hem 7 that from the top down set gradually, its characterized in that: planar sliding connection between upper bracket board 1 and the concave surface welt 2, all through spherical surface sliding connection between the sphere on concave surface welt 2 and the two spherical surface body 4 and between sphere and the lower hem 7 under the two spherical surface body 4, concave surface welt 2 below cover is equipped with shear ring 8, shear ring 8 passes through shear pin 9 and connects on lower hem 7, shear ring 8 top left and right sides all is provided with the jam plate 12 that is used for restricting upper bracket board 1 and concave surface welt 2 relative slip that is connected through spring control mechanism.
The lower surface of the upper support plate 1 is provided with a lower groove, and the sum of the horizontal width of the concave lining plate 2 and the horizontal widths of the two stop plates 12 is equal to the horizontal width of the lower groove.
The left and right sides of 2 outer walls of concave surface welt all fixedly is provided with spring pressure strip 13, and spring pressure strip 13 is located between shear ring 8 and the locking plate 12 that corresponds, and every spring control mechanism all includes spring 11 of both ends fixed connection between spring pressure strip 13 and locking plate 12 and the bolt 10 that is used for compression spring 11, bolt 10 passes in proper order behind locking plate 12, spring 11, spring pressure strip 13, the shear ring 8 through the threaded connection on lower hem 7.
Through holes for the bolts 10 to penetrate through are formed in the spring pressing plate 13 and the shear ring 8, the diameter of each through hole is larger than the outer diameter of each bolt 10, and the through holes for the bolts 10 to penetrate through on the shear ring 8 do not coincide with pin holes for the shear pins 9 to penetrate through on the shear ring 8.
The utility model has simple structure, the displacement under the normal working condition is plane movement, and the lifting of the bridge can not be generated; under the working condition of earthquake, the plane movement is reliably limited, the horizontal displacement can be achieved only through the curved surface movement, the earthquake-proof route is clear and continuous, and the inflection point of the movable support caused by the idle stroke specified in standard JT/T852 + 2013 friction swinging type earthquake reduction and isolation support for road bridges can not occur.
Example 2
The embodiment is further optimized on the basis of embodiment 1, and specifically comprises the following steps:
The upper surface of the concave surface lining plate 2 is provided with a flat bottom groove for accommodating the plane wear-resistant sliding plate 3, and the upper surface and the lower surface of the double-spherical-surface body 4 are respectively provided with an upper arc-shaped groove and a lower arc-shaped groove for installing a spherical surface wear-resistant sliding plate I5 and a spherical surface wear-resistant sliding plate II 6.
States and processes of the shock absorption and isolation support under different working conditions are described as follows:
as shown in FIG. 2, FIG. 2 shows the displacement state of the support under normal condition or E1 earthquake condition: the support is leveled and the upper deck is displaced relative to the substructure.
As shown in FIG. 3, the normal conditions of FIG. 3 are transformed into the impending earthquake: when earthquake force comes, horizontal force F is increased, when the value F exceeds the designed value of the shear pin 9, the shear pin 9 and the bolt 10 for restraining the spring are sheared, the shear ring restraining device of the support is damaged, the spring control mechanism is started, the compressed spring 11 is in a compression force rebound state, and the stop plate 12 is jacked up by the spring.
As shown in FIG. 4, FIG. 4 shows the seismic operating condition E2 support state A: on the basis of fig. 3, the reciprocating movement is carried out until the two stop plates 12 are limited to the upper support plate, the stop plates effectively prevent the planar movement, and the upper support plate 1 and the concave lining plate 2 are relatively fixed by the spring 11 and the stop plates 12 and are called a top pendulum.
As shown in fig. 5, fig. 5 shows an E2 seismic condition support state B: on the basis of fig. 4, the three pieces of the upper pendulum, the double-spherical-surface body 4 and the lower pendulum 7 can only adapt to and adjust displacement change through spherical rotation and bridge lifting. The support is converted into hyperboloid motion, or friction pendulum motion by plane sliding motion to reach subtract, the shock insulation shakes the effect, realize the product function.
Claims (6)
1. The utility model provides a conversion formula friction pendulum subtracts, isolation bearing, including upper bracket board (1), concave surface welt (2), two spherical surface body (4) and lower hem (7) that from the top down set gradually, its characterized in that: plane sliding connection between upper bracket board (1) and concave surface welt (2), go up between the sphere and all through sphere sliding connection between sphere and lower hem (7) under the two sphere body (4) on concave surface welt (2) and two sphere body (4), concave surface welt (2) below cover is equipped with shear ring (8), shear ring (8) are connected on lower hem (7) through shear pin (9), both sides all are provided with stopper plate (12) that are used for restricting upper bracket board (1) and concave surface welt (2) relative slip through spring control mechanism connects about shear ring (8) top.
2. The conversion type friction pendulum vibration reduction and isolation support according to claim 1, wherein: the lower surface of the upper support plate (1) is provided with a lower groove, and the sum of the horizontal width of the concave lining plate (2) and the horizontal widths of the two stop plates (12) is equal to the horizontal width of the lower groove.
3. The conversion type friction pendulum vibration reduction and isolation support according to claim 1, wherein: the left and right sides of concave surface welt (2) outer wall all is fixed and is provided with spring pressure strip (13), and spring pressure strip (13) are located between shear ring (8) and corresponding locking plate (12), and every spring control mechanism all includes spring (11) of both ends fixed connection between spring pressure strip (13) and locking plate (12) and bolt (10) that are used for compression spring (11), connect on lower pendulum (7) through the screw thread mode behind bolt (10) passing locking plate (12), spring (11), spring pressure strip (13), shear ring (8) in proper order.
4. The conversion type friction pendulum vibration reduction and isolation support according to claim 3, wherein: through holes for the bolts (10) to pass are formed in the spring pressing plate (13) and the shear ring (8), the diameter of each through hole is larger than the outer diameter of each bolt (10), and the through holes for the bolts (10) to pass through on the shear ring (8) and pin holes for the shear pins (9) to pass through on the shear ring (8) are not overlapped.
5. The conversion type friction pendulum vibration reduction and isolation support according to claim 1, wherein: concave surface welt (2) and upper bracket board (1) are through plane wear-resisting slide (3) sliding connection, concave surface welt (2) lower surface be provided with two spherical surface body (4) go up sphere complex indent sphere one, through sphere wear-resisting slide I (5) sliding connection between the last sphere of indent sphere one and two spherical surface body (4), lower hem (7) upper surface be provided with two spherical surface body (4) lower sphere complex indent sphere two, through sphere wear-resisting slide II (6) sliding connection between the lower sphere of indent sphere two and two spherical surface body (4).
6. The conversion type friction pendulum vibration reduction and isolation support according to claim 4, wherein: the upper surface of the concave surface lining plate (2) is provided with a flat bottom groove for accommodating the plane wear-resistant sliding plate (3), and the upper surface and the lower surface of the double-spherical-surface body (4) are respectively provided with an upper arc-shaped groove and a lower arc-shaped groove for installing the spherical surface wear-resistant sliding plate I (5) and the spherical surface wear-resistant sliding plate II (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021064916.0U CN212956112U (en) | 2020-06-11 | 2020-06-11 | Conversion type friction pendulum vibration reduction and isolation support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021064916.0U CN212956112U (en) | 2020-06-11 | 2020-06-11 | Conversion type friction pendulum vibration reduction and isolation support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212956112U true CN212956112U (en) | 2021-04-13 |
Family
ID=75385339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021064916.0U Active CN212956112U (en) | 2020-06-11 | 2020-06-11 | Conversion type friction pendulum vibration reduction and isolation support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212956112U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113202204A (en) * | 2021-06-07 | 2021-08-03 | 范雷彪 | Pendulum type support with longitudinal buffering function |
| CN113308986A (en) * | 2021-06-10 | 2021-08-27 | 同济大学 | Trigger type displacement locking friction pendulum support |
-
2020
- 2020-06-11 CN CN202021064916.0U patent/CN212956112U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113202204A (en) * | 2021-06-07 | 2021-08-03 | 范雷彪 | Pendulum type support with longitudinal buffering function |
| CN113308986A (en) * | 2021-06-10 | 2021-08-27 | 同济大学 | Trigger type displacement locking friction pendulum support |
| CN113308986B (en) * | 2021-06-10 | 2024-05-31 | 同济大学 | Trigger type displacement locking friction pendulum support |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN212956112U (en) | Conversion type friction pendulum vibration reduction and isolation support | |
| CN107142841B (en) | Shock attenuation is drawn and is pressed ball-type support with prevent falling roof beam function | |
| US10208437B1 (en) | Damping bearing in convertible antiseismic mode and damping bridge apparatus | |
| CN110820540B (en) | Energy-consuming roller vibration reduction and isolation device | |
| CN113235407B (en) | Limiting and releasing method of friction pendulum support | |
| CN105178174A (en) | Seismic isolation and reduction support with displacement locking device | |
| CN109235659B (en) | Friction pendulum vibration isolation support with lifting device and construction method thereof | |
| CN203947408U (en) | A kind of novel bridge structural defence system | |
| CN201381476Y (en) | Shock-resistant spherical rotating supporting base | |
| CN215482265U (en) | Trigger type displacement locking friction pendulum support | |
| CN213978552U (en) | Mechanical locking friction pendulum vibration reduction and isolation support | |
| CN204435205U (en) | The anti-fall anticollision device, collision-prevention device of a kind of bridge beam body | |
| CN206256370U (en) | Firm arm speed lockup's vibration absorption and isolation support such as one kind | |
| CN112921795A (en) | Shock absorption and isolation support for arched bridge deck bridge | |
| CN216275197U (en) | Novel friction pendulum support | |
| CN211498451U (en) | Chain type inhaul cable beam falling prevention mechanism of bridge support | |
| CN109235248B (en) | Spherical steel support of power consumption | |
| CN109056513B (en) | Non-slip overload protection support | |
| CN210216137U (en) | E steel sliding support with displacement locking function | |
| CN113308986A (en) | Trigger type displacement locking friction pendulum support | |
| CN214459593U (en) | Flat pendulum type shock insulation support with beam falling prevention function | |
| CN215252290U (en) | Position-variable self-adaptive bridge support | |
| CN215887902U (en) | Bridge pin-connected panel prevents roof beam friction pendulum support that falls | |
| CN112195765A (en) | Mechanical locking friction pendulum vibration reduction and isolation support | |
| CN111119035A (en) | Rapid installation device for installing bridge support and installation and use method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |