CN217580661U - Three-dimensional shock insulation support - Google Patents
Three-dimensional shock insulation support Download PDFInfo
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- CN217580661U CN217580661U CN202221516941.7U CN202221516941U CN217580661U CN 217580661 U CN217580661 U CN 217580661U CN 202221516941 U CN202221516941 U CN 202221516941U CN 217580661 U CN217580661 U CN 217580661U
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Abstract
The utility model relates to a three-dimensional isolation bearing relates to building engineering shock insulation technical field. The device comprises a horizontal friction pendulum shock isolation device and a vertical shock isolation device, wherein the horizontal friction pendulum shock isolation device and the vertical shock isolation device are combined in series. The horizontal friction pendulum vibration isolation device adopts a friction pendulum support, the vertical vibration isolation device comprises a friction vibration isolation assembly and a spring vibration isolation assembly, the friction vibration isolation assembly comprises an inner sleeve and an outer sleeve, and a sliding main steel plate is arranged between the inner sleeve and the outer sleeve; the spring shock insulation assembly comprises a disc spring and an SMA spiral spring. The utility model discloses a friction pendulum support and friction shock insulation subassembly's friction energy dissipation can effectively alleviate level and vertical earthquake effect, has good three-dimensional shock insulation ability, has that early vertical rigidity is adjustable, has self-resuming ability, has rotatability, and resistance to plucking performance is good, and advantages such as simple structure.
Description
Technical Field
The utility model relates to a building engineering shock insulation technical field especially relates to a three-dimensional shock insulation support.
Background
The shock insulation support is the most widely applied shock insulation technology in the world at present, a building is divided into an upper structure and a lower structure, and the upper structure and the lower structure are respectively connected with the shock insulation support to form a shock insulation layer, so that the condition that the seismic capacity directly acts on the upper structure of the building to damage the service performance of the building is avoided.
At present, only the action of isolating a horizontal earthquake is generally considered when the earthquake isolation design of a building structure is carried out, and vertical earthquake isolation is not considered. The laminated rubber support, the sliding shock insulation support, the rolling shock insulation support and the like which are widely applied to practical engineering have good performance in the aspect of reducing horizontal earthquake action, but do not have vertical shock insulation effect, and even have certain earthquake amplification effect. In view of this, students at home and abroad make a large amount of theoretical analysis and experimental research on the vertical shock-insulation support in recent decades, obtain certain results, provide important reference values for the development of the shock-insulation support and the application of the shock-insulation support in practical engineering, and further realize three-dimensional shock insulation by connecting the vertical shock-insulation support and the horizontal shock-insulation support in series or in parallel.
The friction energy dissipation is to utilize the sliding friction force which is generated on the contact surface and opposite to the sliding direction when two contact objects generate relative displacement, and to convert the earthquake input energy into internal energy for dissipation. At present, the vibration isolation device is mainly applied to horizontal vibration isolation, such as a friction pendulum support, so that the vibration isolation device is a new feasible direction when being applied to vertical energy dissipation and vibration reduction.
In a high-intensity earthquake region, particularly a near-fault earthquake region, the vertical action component of earthquake motion is often stronger and even possibly exceeds the horizontal earthquake action component, so that the vertical action component becomes a leading factor for causing structural collapse and damage.
The three-dimensional shock isolation device is used for isolating horizontal and vertical earthquakes simultaneously, the maximum difficulty of vertical shock isolation is the contradiction between the requirement of larger bearing capacity of an upper structure and the smaller rigidity of a shock isolation layer, and the difficulty lies in that the vertical rigidity of the upper structure is ensured and the proper rigidity of a shock isolation support is selected, so that the self-vibration period of the structure in the vertical direction is increased.
SUMMERY OF THE UTILITY MODEL
Aiming at the technical problem, a shock insulation structure with horizontal and vertical shock insulation effects is designed; and the vertical rigidity and the three-dimensional shock insulation support with self-recovery capability can be adjusted according to actual needs.
A three-dimensional shock insulation support comprises a horizontal friction pendulum shock insulation device and a vertical shock insulation device, wherein the horizontal friction pendulum shock insulation device is connected above the vertical shock insulation device; the horizontal friction pendulum seismic isolation device comprises a first connecting plate and a second connecting plate; the top of the second connecting plate is provided with a spherical slideway, and a sliding block sliding along the spherical slideway is arranged in the spherical slideway; the bottom of the first connecting plate is fixedly connected with a bottom support, and the bottom of the bottom support is connected with a sliding block; a limiting device is arranged between the first connecting plate and the second connecting plate, and the first connecting plate and the second connecting plate relatively slide in the horizontal direction within a limiting range;
the vertical shock insulation device comprises a third connecting plate, a fourth connecting plate, a friction shock insulation assembly and a spring shock insulation assembly;
the friction shock insulation assembly comprises an inner sleeve and an outer sleeve sleeved outside the inner sleeve; the inner sleeve and the outer sleeve are connected to the top of the fourth connecting plate; the bottom of the third connecting plate is fixedly connected with a sliding main steel plate, and the sliding main steel plate is positioned between the inner sleeve and the outer sleeve and is tightly attached to the outer wall of the inner sleeve and the inner wall of the outer sleeve to vertically slide;
the spring shock insulation assembly is positioned in an inner sleeve of the friction shock insulation assembly; the spring shock insulation assembly comprises a disc spring and an SMA spiral spring; the SMA spiral spring is arranged in the middle of the disc spring, two ends of the disc spring are fixedly connected with the bottom of the third connecting plate and the top of the fourth connecting plate respectively, and two ends of the SMA spiral spring are fixedly connected with the bottom of the third connecting plate and the top of the fourth connecting plate respectively; the second connecting plate is fixed above the third connecting plate through a connecting plate bolt.
Furthermore, the limiting device comprises an upper limiting block and a lower limiting block; the upper limiting block comprises a first connecting piece connected to the bottom edge of the first connecting plate, and the lower end of the first connecting piece is fixedly connected with a horizontal second connecting piece; the lower limiting block comprises a third connecting piece connected to the edge of the top of the second connecting plate, and the upper end of the third connecting piece is fixedly connected with a horizontal fourth connecting piece; the lower end of the second connecting piece and the upper end of the fourth connecting piece slide relatively along the horizontal direction; and a plurality of groups of limiting devices are arranged between the first connecting plate and the second connecting plate.
Further, the spring shock insulation assembly further comprises a guide cylinder, and the guide cylinder is vertically connected to the top of the fourth connecting plate; the bottom of the third connecting plate is connected with a circular guide groove; the guide cylinder is sleeved in the circular guide groove and is in sliding connection with the circular guide groove; the guide cylinder and the circular guide groove form a guide channel, and the SMA spiral spring is positioned in the guide channel.
Furthermore, friction plates are arranged between the sliding main steel plate and the outer wall of the inner sleeve and between the sliding main steel plate and the inner wall of the outer sleeve.
Furthermore, the friction shock insulation assembly further comprises a pre-tightening bolt, and the inner sleeve, the outer sleeve, the friction plate and the sliding main steel plate are sequentially connected through the pre-tightening bolt; the sliding main steel plate is provided with a limiting vertical hole, and the sliding main steel plate slides along the pre-tightening bolt through the limiting vertical hole.
Furthermore, the width of the sliding vertical hole is slightly larger than the diameter of the pre-tightening bolt.
Furthermore, the spherical slide way and the sliding contact surface of the sliding block have the same spherical radius.
Has the advantages that: the utility model provides a compromise compound three-dimensional isolation bearing of level and vertical vibration isolation performance increases vertical shock isolation device on horizontal friction pendulum shock isolation device's basis, including friction shock isolation subassembly and spring shock isolation subassembly.
Under the action of a horizontal earthquake, a friction pendulum support of the horizontal friction pendulum vibration isolation device plays a role in isolating the horizontal earthquake through sliding energy consumption, reduces vibration of the structure under the action of the horizontal earthquake, and achieves the purpose of protecting the structure. Meanwhile, the sliding block can rotate in the spherical slideway, and the torsion force generated by uneven seismic force is consumed.
Under the action of vertical earthquake, the friction shock isolation assembly of the vertical shock isolation device bears the main vertical earthquake action through vertical sliding, the damping of the shock isolation support under the action of the vertical earthquake is increased, the vertical earthquake energy transmitted to the structure by the earthquake is consumed, the swinging of the upper structure under the action of the vertical earthquake is reduced, and the vertical shock isolation support has good anti-overturning capability. Meanwhile, the disc spring and the SMA spiral spring also have certain capability of isolating vertical earthquake through deformation. Meanwhile, after the earthquake action is finished, the disc spring and the SMA alloy spiral spring have the tendency of recovering the original shapes, so that the friction shock insulation assembly can recover the original position.
The utility model discloses a friction energy dissipation of horizontal friction pendulum device can effectively alleviate level and vertical seismic action, has good three-dimensional shock insulation ability, has self recovery ability, has rotatability, and the resistance to plucking performance is good, and advantages such as simple structure, but wide application in building structure's three-dimensional shock insulation.
Drawings
Fig. 1 is a schematic structural view of a three-dimensional seismic isolation bearing provided by the present invention;
FIG. 2 isbase:Sub>A cross-sectional view taken along the line A-A in FIG. 1;
fig. 3 is a schematic view of a sleeve, a sliding main steel plate and a friction plate of the three-dimensional seismic isolation bearing provided by the utility model;
fig. 4 is the utility model provides a three-dimensional isolation bearing's horizontal friction pendulum seismic isolation device is located the schematic structure of vertical seismic isolation device below.
In the figure: 1-sliding block, 2-spherical slideway, 3-bottom support, 4-upper limiting block, 5-lower limiting block, 6-outer sleeve, 7-inner sleeve, 8-sliding main steel plate, 9-friction plate, 10-pre-tightening bolt, 11-belleville spring, 12-guide cylinder, 13-SMA helical spring, 14-first connecting plate, 15-second connecting plate, 16-fourth connecting plate, 17-connecting plate bolt, 18-third connecting plate, 19-circular guide groove, 20-guide channel and 21-limiting vertical hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the following description of the three-dimensional isolation bearing of the present invention is made with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
As shown in fig. 1 and 3, the three-dimensional seismic isolation support comprises a horizontal friction pendulum seismic isolation device and a vertical seismic isolation device, wherein the horizontal friction pendulum seismic isolation device is positioned above the vertical seismic isolation device; horizontal friction pendulum seismic isolation device includes first connecting plate 14 and second connecting plate 15, the top of second connecting plate 15 is provided with spherical slide 2, be provided with in the spherical slide 2 along the gliding slider 1 of spherical slide 2, the bottom fixedly connected with collet 3 of first connecting plate 14, the bottom and the slider 1 of collet 3 are connected, be provided with stop device between first connecting plate 14 and the second connecting plate 15, first connecting plate 14 and second connecting plate 15 are along the relative slip of horizontal direction in limit range. As the earthquake is mainly divided into transverse waves and longitudinal waves, the vertical action and the transverse action of the earthquake need to be considered. In the embodiment, the horizontal friction pendulum vibration isolation device and the vertical vibration isolation device are respectively used for relieving the transverse action and the vertical action of the earthquake on the superstructure. The bottom support 3 of the horizontal friction pendulum vibration isolation device is located at the center of the bottom of the first connecting plate 14, the lower end of the horizontal friction pendulum vibration isolation device is fixedly connected with the top of the sliding block 1, a friction material coating is arranged on the contact surface of the sliding block 1 and the spherical slideway 2 and used for increasing the friction force between the spherical slideway 2 and the sliding block, and the horizontal energy input by an earthquake is consumed by converting the horizontal energy into internal energy. The slideway surface of the spherical slideway 2 is an arc surface with a low middle part and high periphery, and the sliding block 1 is positioned in the middle part, so that the sliding block 1 can rotate in the arc surface, and the torque force generated by uneven seismic force is consumed. The spherical slide way 2 and the sliding contact surface of the sliding block 1 have the same spherical radius. The bottom support 3 and the sliding block 1 can be fixedly connected or can be connected in a spherical hinge mode. Referring to fig. 4, the horizontal friction pendulum vibration isolation device may also be installed below the vertical vibration isolation device.
The vertical shock insulation device comprises a third connecting plate 18, a fourth connecting plate 16, a friction shock insulation assembly and a spring shock insulation assembly; the friction shock insulation assembly comprises an inner sleeve 7, an outer sleeve 6 and a sliding main steel plate 8, the inner sleeve 7 is sleeved in the outer sleeve 6, the inner sleeve 7 and the outer sleeve 6 are both connected to the top of a fourth connecting plate 16, the bottom of a third connecting plate 18 is fixedly connected with the sliding main steel plate 8, and the sliding main steel plate 8 is located between the inner sleeve 7 and the outer sleeve 6 and is tightly attached to the outer wall of the inner sleeve 7 and the inner wall of the outer sleeve 6 to vertically slide; the spring shock insulation assembly is positioned in an inner sleeve 7 of the friction shock insulation assembly; the spring shock insulation assembly comprises a disc spring 11 and an SMA spiral spring 13, two ends of the disc spring 11 are fixedly connected with the bottom of a third connecting plate 18 and the top of a fourth connecting plate 16 respectively, two ends of the SMA spiral spring 13 are fixedly connected with the bottom of the third connecting plate 18 and the top of the fourth connecting plate 16 respectively, and a second connecting plate 15 is fixed above the third connecting plate 18 through a connecting plate bolt 17. In order to increase the friction force, friction plates 9 are arranged between the sliding main steel plate 8 and the outer wall of the inner sleeve 7 and the inner wall of the outer sleeve 6. The friction plates 9 and the sliding main steel plates on the side walls of the inner sleeve 7 and the outer sleeve 6 are arc-shaped plates and are arranged at two sides of the inner sleeve 7 and the outer sleeve 6 at intervals. The initial vertical stiffness and vertical energy dissipation capability of the friction shock isolation assembly can be achieved by adjusting the distance between the inner sleeve 7 and the outer sleeve 6 so as to increase or decrease the friction force. The number, stacking pattern, position, etc. of the disk springs 11 can also be adjusted by the actual circumstances. The friction plate 9 may be made of different materials to provide different friction energy dissipation properties, such as PVC friction plate, aluminum friction plate, steel friction plate. Sets of the disc springs 11 are disposed around the SMA coil springs 13. The friction shock insulation assembly is of an annular structure or a rectangular structure. The vertical shock isolation device and the horizontal friction pendulum shock isolation device can be connected through a connecting plate bolt 17.
Under the action of a vertical earthquake, the friction shock insulation assembly of the vertical shock insulation device consumes vertical earthquake energy transmitted to the structure by the earthquake, reduces the swing of the upper layer structure under the action of the vertical earthquake, and has good anti-overturning capability. The disk spring 13 has a good damping effect on vertical earthquakes by utilizing the characteristics of high rigidity, strong buffering and vibration absorbing capacity, capability of bearing large load with small deformation and suitability for occasions with small axial space requirements, and the SMA spiral spring 13 also has certain capacity of isolating vertical earthquakes through deformation. Meanwhile, after the earthquake action is finished, the disc spring 11 and the SMA spiral spring 13 have the tendency of recovering the original shapes, so that the friction shock insulation assembly can recover the original position.
The limiting device comprises an upper limiting block 4 and a lower limiting block 5; the upper limiting block 4 comprises a first connecting piece connected to the bottom edge of the first connecting plate 14, and the lower end of the first connecting piece is fixedly connected with a horizontal second connecting piece; the lower limiting block 5 comprises a third connecting piece connected to the edge of the top of the second connecting plate 15, and the upper end of the third connecting piece is fixedly connected with a horizontal fourth connecting piece; the lower end of the second connecting piece and the upper end of the fourth connecting piece slide relatively along the horizontal direction, and a plurality of groups of limiting devices are arranged between the first connecting plate 14 and the second connecting plate 15. In this embodiment, the upper limiting block 4 and the lower limiting block 5 are both limiting sleeves with L-shaped cross sections, and the upper limiting block and the lower limiting block which are installed in a matched manner have an anti-pulling limiting effect on the horizontal friction pendulum vibration isolation device when receiving a vertical upward pulling force. The first connecting plate 14 of the friction pendulum vibration isolation device is ensured to horizontally translate only under the action of a horizontal earthquake. The limiting devices can be arranged at intervals around the first connecting plate and the second connecting plate and can be 4 groups, 8 groups and the like.
The belleville spring assembly may be mounted beside or in the middle of the friction isolation assembly, and in this embodiment, the spring isolation assembly is mounted in the inner sleeve 7 of the friction isolation assembly because the inner sleeve 7 and the outer sleeve 6 are circular. Compared with the installation method beside the friction shock insulation assembly, the installation method is favorable for saving space and can protect the spring shock insulation assembly from being damaged by the external environment.
Referring to fig. 3, as the length of the SMA coil spring 13 is longer than that of the disc spring 11, and therefore deformation may be caused during expansion and contraction, a guide cylinder 12 is disposed outside the SMA coil spring 13, the guide cylinder 12 is vertically disposed on the top of the fourth connecting plate 16, a circular guide groove 19 is disposed at the bottom of the third connecting plate 18, the guide cylinder 12 extends into the circular guide groove 19 and is slidably connected with the circular guide groove 19, the guide cylinder 12 and the circular guide groove 19 form a guide channel 20, and the SMA coil spring 13 is disposed in the guide channel 20. The diameter of the guide cylinder 12 is slightly smaller than that of the circular guide groove 19, a low-friction material is coated between contact surfaces, and the length of the SMA spiral spring 13 is longer than that of the guide channel 20.
The friction shock insulation assembly further comprises a pre-tightening bolt 10, the inner sleeve 7, the outer sleeve 6, the friction plate 9 and the sliding main steel plate 8 are sequentially connected through the pre-tightening bolt 10, the sliding main steel plate 8 is provided with a limiting vertical hole 21, and the sliding main steel plate 8 slides along the pre-tightening bolt 10 through the limiting vertical hole 21. The friction shock insulation assembly applies pretightening force to the inner sleeve, the outer sleeve and the steel plate through the adjusting pre-bolt 10, so that the contact surface of each plate generates positive pressure, and the pretightening force is adjusted through adjusting the tightness degree of the pre-bolt 10, so that the friction force during sliding and the energy consumption capacity of the friction shock insulation assembly can be adjusted. A small disc spring is additionally arranged below a nut of the pre-tightening bolt 10, so that the loosening pre-tightening force of the bolt in the sliding process of the main board can be prevented from being reduced. The width of the sliding vertical hole 21 is slightly larger than the diameter of the bolt. The initial compression degree of the spring shock insulation assembly can be adjusted by adjusting the height of the friction shock insulation assembly and fastening the friction shock insulation assembly by the pre-tightening bolt 10, and the initial rigidity of the three-dimensional shock insulation device can be adjusted.
The utility model discloses in, reduce seismic horizontal action and vertical effect through horizontal friction pendulum vibration isolation device and vertical vibration isolation device, have good three-dimensional shock insulation ability, but wide application in building structure's three-dimensional shock insulation.
Claims (7)
1. A three-dimensional shock insulation support is characterized in that: the device comprises a horizontal friction pendulum vibration isolation device and a vertical vibration isolation device, wherein the horizontal friction pendulum vibration isolation device is connected above the vertical vibration isolation device;
the horizontal friction pendulum vibration isolation device comprises a first connecting plate (14) and a second connecting plate (15); a spherical slideway (2) is arranged at the top of the second connecting plate (15), and a sliding block (1) sliding along the spherical slideway (2) is arranged in the spherical slideway (2); the bottom of the first connecting plate (14) is fixedly connected with a bottom support (3), and the bottom of the bottom support (3) is connected with a sliding block (1); a limiting device is arranged between the first connecting plate (14) and the second connecting plate (15), and the first connecting plate (14) and the second connecting plate (15) relatively slide in the limiting range along the horizontal direction;
the vertical shock insulation device comprises a third connecting plate (18), a fourth connecting plate (16), a friction shock insulation assembly and a spring shock insulation assembly;
the friction shock insulation assembly comprises an inner sleeve (7) and an outer sleeve (6) sleeved outside the inner sleeve (7); the inner sleeve (7) and the outer sleeve (6) are connected to the top of the fourth connecting plate (16); the bottom of the third connecting plate (18) is connected with a sliding main steel plate (8), and the sliding main steel plate (8) is positioned between the inner sleeve (7) and the outer sleeve (6) and is tightly attached to the outer wall of the inner sleeve (7) and the inner wall of the outer sleeve (6) to vertically slide;
the spring shock insulation assembly is positioned in an inner sleeve (7) of the friction shock insulation assembly; the spring shock insulation assembly comprises a disc spring (11) and an SMA spiral spring (13); the SMA spiral spring (13) is arranged in the middle of the disc spring (11), two ends of the disc spring (11) are fixedly connected with the bottom of the third connecting plate (18) and the top of the fourth connecting plate (16) respectively, and two ends of the SMA spiral spring (13) are fixedly connected with the bottom of the third connecting plate (18) and the top of the fourth connecting plate (16) respectively;
the second connecting plate (15) is fixed above the third connecting plate (18) through a connecting plate bolt (17).
2. A three-dimensional seismic isolation mount according to claim 1, wherein: the limiting device comprises an upper limiting block (4) and a lower limiting block (5); the upper limiting block (4) comprises a first connecting piece connected to the bottom edge of the first connecting plate (14), and the lower end of the first connecting piece is fixedly connected with a horizontal second connecting piece; the lower limiting block (5) comprises a third connecting piece connected to the edge of the top of the second connecting plate (15), and the upper end of the third connecting piece is fixedly connected with a horizontal fourth connecting piece; the lower surface of the second connecting piece and the upper surface of the fourth connecting piece slide relatively along the horizontal direction; a plurality of groups of limiting devices are arranged between the first connecting plate (14) and the second connecting plate (15).
3. The three-dimensional seismic isolation bearing of claim 1, wherein: the spring shock insulation assembly further comprises a guide cylinder (12), and the guide cylinder (12) is vertically connected to the top of the fourth connecting plate (16); the bottom of the third connecting plate (18) is connected with a circular guide groove (19); the guide cylinder (12) is sleeved in the circular guide groove (19) and is in sliding connection with the circular guide groove (19); the guide cylinder (12) and the circular guide groove (19) form a guide channel (20), and the SMA spiral spring (13) is positioned in the guide channel (20).
4. The three-dimensional seismic isolation bearing of claim 1, wherein: and friction plates (9) are arranged between the outer walls of the sliding main steel plate (8) and the inner sleeve (7) and between the inner walls of the outer sleeve (6).
5. The three-dimensional seismic isolation bearing of claim 1, wherein: the friction shock insulation assembly further comprises a pre-tightening bolt (10), and the inner sleeve (7), the outer sleeve (6), the friction plate (9) and the sliding main steel plate (8) are sequentially connected through the pre-tightening bolt (10); the sliding main steel plate (8) is provided with a limiting vertical hole (21), and the sliding main steel plate (8) slides along the pre-tightening bolt (10) through the limiting vertical hole (21).
6. A three-dimensional seismic isolation mount according to claim 5, wherein: the width of the limiting vertical hole (21) is slightly larger than the diameter of the pre-tightening bolt (10).
7. The three-dimensional seismic isolation bearing of claim 1, wherein: the spherical slide way (2) and the sliding contact surface of the sliding block (1) have the same spherical radius.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221516941.7U CN217580661U (en) | 2022-06-16 | 2022-06-16 | Three-dimensional shock insulation support |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221516941.7U CN217580661U (en) | 2022-06-16 | 2022-06-16 | Three-dimensional shock insulation support |
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| CN217580661U true CN217580661U (en) | 2022-10-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116005814A (en) * | 2023-01-09 | 2023-04-25 | 江苏华泰路桥建设集团有限公司 | Combined limiting device for rubber vibration isolation support |
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2022
- 2022-06-16 CN CN202221516941.7U patent/CN217580661U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116005814A (en) * | 2023-01-09 | 2023-04-25 | 江苏华泰路桥建设集团有限公司 | Combined limiting device for rubber vibration isolation support |
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