CN110685368A - Multidimensional control SMA-complex friction pendulum shock isolation system - Google Patents

Multidimensional control SMA-complex friction pendulum shock isolation system Download PDF

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Publication number
CN110685368A
CN110685368A CN201910988716.XA CN201910988716A CN110685368A CN 110685368 A CN110685368 A CN 110685368A CN 201910988716 A CN201910988716 A CN 201910988716A CN 110685368 A CN110685368 A CN 110685368A
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China
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friction pendulum
isolation system
bottom plate
sliding surface
shape memory
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CN201910988716.XA
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Chinese (zh)
Inventor
庄鹏
徐蒙
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Beijing University of Civil Engineering and Architecture
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Beijing University of Civil Engineering and Architecture
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Priority to CN201910988716.XA priority Critical patent/CN110685368A/en
Publication of CN110685368A publication Critical patent/CN110685368A/en
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/92—Protection against other undesired influences or dangers
    • E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/04—Bearings; Hinges
    • E01D19/041—Elastomeric bearings
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/04—Bearings; Hinges
    • E01D19/042—Mechanical bearings
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/36—Bearings or like supports allowing movement
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
    • E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
    • E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2101/00—Material constitution of bridges
    • E01D2101/30—Metal
    • E01D2101/34—Metal non-ferrous, e.g. aluminium

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Vibration Prevention Devices (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)

Abstract

The invention relates to a multidimensional control SMA-complex friction pendulum shock isolation system which comprises a top plate, a bottom plate and a sliding block, wherein the top plate is provided with an upper sliding surface, the bottom plate is provided with a lower sliding surface, a stay cable support is arranged on the bottom plate, a shape memory alloy stay cable is arranged among the top plate, the bottom plate and the stay cable support, the sliding block is arranged between an upper sliding surface and a lower sliding surface of the top plate and the bottom plate, and the sliding block can slide on the two sliding surfaces. According to the multidimensional control SMA-complex friction pendulum shock isolation system, the displacement of the support is limited by arranging the shape memory alloy cable, so that the support is prevented from being damaged due to large displacement under the action of strong shock, and the shock isolation performance of the support is improved; meanwhile, under the action of strong shock, the shape memory alloy cable is always in a tension state, and the advantage of super elasticity can be well exerted.

Description

Multidimensional control SMA-complex friction pendulum shock isolation system
Technical Field
The invention belongs to the technical field of building structure shock insulation control, and particularly relates to a multidimensional control SMA-complex friction pendulum shock insulation system.
Background
Traditional anti-seismic design of buildings and bridges mainly depends on strength, rigidity and ductility of members to meet anti-seismic requirements, but in recent years, along with the continuous increase of the complexity of structural systems, the conventional anti-seismic design method is more and more difficult to meet the requirements of structural safety and applicability. And the vibration control technology can better meet the requirement of the structure on the vibration resistance. The vibration isolation technology is an effective vibration control technology and has wide application in building and bridge engineering. The friction pendulum support is a shock insulation sliding system, and has a self-resetting mechanism and good stability through a specific arc surface. The self-vibration period of the structure is prolonged, the seismic energy is isolated by sliding of the internal sliding block, and the seismic energy is consumed by utilizing contact friction. The complex friction pendulum support is a novel shock insulation support, has two glide planes from top to bottom, under the same parameter, compares in the friction pendulum support of single glide plane, and displacement capacity can improve the one time.
Chinese utility model patent with publication number CN207109570U discloses a friction pendulum support, including upper sliding plate, lower sliding plate and the spherical crown that is located between them, fixed mounting has end basin on the lower sliding plate, and the convex surface of spherical crown cooperatees with the last concave surface of end basin, and the lower surface of upper sliding plate is the concave surface, and the lower surface of upper sliding plate is supported to the bottom surface of spherical crown. The utility model discloses friction pendulum support satisfies the displacement requirement of equidirectional vibration through sliding between last sliding plate, end basin and the spherical crown, and simple structure, with low costs, suitability are high, and through the connecting piece, further cushion the displacement, connect the upper sliding plate simultaneously and lower sliding plate, stable in structure.
Chinese patent application No. CN106522375B discloses a friction pendulum sliding support, in which a first slider and a second slider are disposed between two first mounting plates and a second mounting plate disposed at intervals, and a through hole is formed in the center of each of the first slider and the second slider, and an elastic element is disposed in the through hole. The friction plates at the two ends of the elastic element, the first mounting plate and the second mounting plate respectively rub with the first friction curved surface of the first mounting plate and the second friction curved surface of the second mounting plate under the action of pressure provided by the elastic element to consume vibration energy.
The friction pendulum support improves displacement capacity, but lacks effectual stop device, and under the macroseism effect, the support can appear toppling and dislocation phenomenon because of producing too big displacement, influences the shock insulation performance of support.
Disclosure of Invention
In order to solve the technical problem that the complex friction pendulum support in the prior art is damaged due to the fact that the complex friction pendulum support is prone to toppling and dislocating due to excessive displacement under the action of strong shock, the invention provides a multidimensional control SMA (Shape Memory Alloy, SMA) -complex friction pendulum vibration isolation system. According to the invention, the displacement of the support is limited by arranging the shape memory alloy inhaul cable, so that the support is prevented from being damaged due to large displacement under the action of strong shock, and the shock insulation performance of the support is improved. Meanwhile, the multidimensional control SMA-complex friction pendulum shock isolation system provided by the invention can always keep the shape memory alloy inhaul cable in a tensioned state under the action of strong shock, and can well exert the advantage of superelasticity.
In order to achieve the above object, the present invention adopts the following technical solutions.
The invention provides a multidimensional control SMA-complex friction pendulum shock isolation system which comprises a top plate, a bottom plate and a sliding block, wherein the top plate is provided with an upper sliding surface, the bottom plate is provided with a lower sliding surface, a stay cable support is arranged on the bottom plate, a shape memory alloy stay cable is arranged among the top plate, the bottom plate and the stay cable support, the sliding block is arranged between an upper sliding surface and a lower sliding surface of the top plate and the bottom plate, and the sliding block can slide on the two sliding surfaces.
In the invention, the sliding block is arranged between the upper sliding surface of the top plate and the lower sliding surface of the bottom plate. The shape memory alloy inhaul cable is arranged in the multidimensional control SMA-complex friction pendulum shock isolation system, so that the effects of limiting the multidimensional displacement of the support and consuming seismic energy are achieved, the support cannot generate overlarge displacement even under the action of strong shock, the support is protected, and the shock isolation performance of the support is improved; meanwhile, an upper sliding surface and a lower sliding surface are arranged in the multidimensional control SMA-complex friction pendulum vibration isolation system, so that the displacement capacity of the support is improved.
Preferably, the upper sliding surface of the top plate and the lower sliding surface of the bottom plate are both concave.
In the invention, the upper sliding concave surface and the lower sliding concave surface are both curved surfaces.
In any of the above embodiments, the upper and lower sliding surfaces preferably have the same radius of curvature.
In any of the above embodiments, the upper and lower sliding surfaces preferably have different radii of curvature.
In the invention, when the curvature radiuses of the upper sliding surface and the lower sliding surface of the top plate and the bottom plate are different, the self-adaptability of the multidimensional control SMA-complex friction pendulum vibration isolation system is improved.
In any one of the above technical solutions, preferably, the number of the stay cable supports is plural.
In any one of the above technical solutions, it is preferable that the shape memory alloy cable is provided in plural numbers.
In any of the above technical solutions, preferably, the plurality of stay cable supports and the plurality of shape memory alloy stay cables are uniformly arranged around the multidimensional control SMA-complex friction pendulum seismic isolation system.
In any of the above technical solutions, it is preferable that the angles and the number of the stay cable supports and the shape memory alloy stay cables can be adjusted as required.
In any of the above technical solutions, it is preferable that an angle between the respective cable supports is 45 degrees.
In any one of the above technical solutions, it is preferable that the angle between the stay supports is adjusted according to the actual situation.
In any of the above technical solutions, it is preferable that the angle between the respective shape memory alloy cables is adjusted as needed.
In any of the above technical solutions, preferably, shape memory alloy cables are uniformly arranged between the top plate and the bottom plate along the periphery, and the upper and lower ends of the shape memory alloy cables are respectively fixedly connected with the top plate and the bottom plate through clamps.
In any of the above technical solutions, preferably, the slider is of an integral structure.
In any of the above technical solutions, preferably, the slider is a split structure.
In any of the above technical solutions, preferably, the main structure of the slider is formed by processing any one of a rectangular parallelepiped, a cube, and a cylinder.
In any one of the above technical solutions, preferably, a surface of the slider that engages with the sliding surface is a convex surface.
In the invention, the upper sliding surface of the top plate and the lower sliding surface of the bottom plate are both concave surfaces, the surfaces of the sliding block, which are matched with the upper sliding surface and the lower sliding surface, are convex surfaces, the sliding block is arranged between the upper sliding surface and the lower sliding surface, and the sliding block can slide on the two sliding surfaces.
In the invention, the matching surface of the sliding block and the upper sliding surface is an upper convex surface, and the upper convex surface and the lower convex surface of the matching surface of the sliding block and the lower sliding surface are curved surfaces.
In any of the above technical solutions, preferably, the upper sliding concave curved surface of the top plate is matched with the upper convex curved surface of the slider to form a pair of circular arc sliding surfaces.
In any of the above technical solutions, preferably, the lower sliding concave curved surface of the bottom plate is adapted to the lower convex curved surface of the slider to form another pair of arc sliding surfaces.
In any of the above technical solutions, preferably, the upper and lower convex curved surfaces of the slider are both coated with a teflon friction material.
In the invention, the surfaces of the sliding block, which are matched with the upper sliding surface and the lower sliding surface, are convex surfaces, and the upper convex curved surface of the sliding block, which is matched with the upper sliding surface, and the lower convex curved surface of the sliding block, which is matched with the lower sliding surface, are coated with polytetrafluoroethylene friction materials.
In any of the above technical solutions, it is preferable that the multidimensional control SMA-complex friction pendulum seismic isolation system has a circular shape, and the top surface and the bottom surface have the same structure.
In any of the above technical solutions, it is preferable that 8 shape memory alloy cables and cable supports are respectively arranged.
In any of the above aspects, preferably, the shape memory alloy cable is formed by winding a plurality of strands of the shape memory alloy wire, and the number of strands has no fixed value.
In any of the above technical solutions, it is preferable that the diameter of the shape memory alloy wire is 1mm, 0.5mm, 1.5mm, or a combination of several of them.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
according to the invention, the displacement of the support is limited by arranging the shape memory alloy inhaul cable, so that the support is prevented from being damaged due to large displacement under the action of strong shock, and the shock insulation performance of the support is improved. Meanwhile, under the action of strong shock, the shape memory alloy cable is always in a tension state, and the advantage of super elasticity can be well exerted.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a front view of a preferred embodiment of a multi-dimensionally controlled SMA-complex friction pendulum seismic isolation system according to the present invention;
FIG. 2 is a top view of the embodiment of FIG. 1 of a multi-dimensionally controlled SMA-complex friction pendulum seismic isolation system according to the present invention;
FIG. 3 is an enlarged schematic view of the shape memory alloy cable structure of the embodiment shown in FIG. 1 of the multi-dimensionally controlled SMA-complex friction pendulum seismic isolation system according to the present invention;
FIG. 4 is a schematic diagram of a slider structure for a multi-dimensionally controlled SMA-complex friction pendulum seismic isolation system according to the present invention;
FIG. 5 is a schematic view of another configuration of a slider for a multi-dimensionally controlled SMA-complex friction pendulum seismic isolation system according to the present invention;
FIG. 6 is a schematic diagram of the system motion state of the multi-dimensionally controlled SMA-complex friction pendulum seismic isolation system according to the present invention;
FIG. 7 is a perspective view of a system for multi-dimensionally controlling an SMA-complex friction pendulum seismic isolation system according to the present invention;
FIG. 8 is a front view of the system configuration of FIG. 8 for a multi-dimensionally controlled SMA-complex friction pendulum isolation system according to the present invention.
Reference numerals: 1. the device comprises a top plate, 2, a bottom plate, 3, a sliding block, 4, a stay cable support, 5, a shape memory alloy stay cable, 6 and a clamp.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to overcome the technical problem that the complex friction pendulum support seat in the prior art is likely to generate overlarge displacement under the action of strong shock, and the phenomenon of overturning and dislocation occurs, so that the support seat is damaged, the embodiment of the invention provides a multidimensional control SMA-complex friction pendulum vibration isolation system, and the support seat displacement is limited by arranging a shape memory alloy inhaul cable, so that the support seat is prevented from being damaged due to the generation of large displacement under the action of strong shock, and the vibration isolation performance of the support seat is improved. Meanwhile, under the action of strong shock, the shape memory alloy cable is always in a tension state, and the advantage of super elasticity can be well exerted.
Example 1
The embodiment provides a multidimensional control SMA-complex friction pendulum vibration isolation system, as shown in fig. 1 to fig. 2, the system comprises a top plate 1, a sliding block 3 and a bottom plate 2, wherein the top plate 1 is provided with an upper sliding surface, the bottom plate 2 is provided with a lower sliding surface, a cable support 4 is arranged on the bottom plate 2, a shape memory alloy cable 5 is arranged among the top plate 1, the bottom plate 2 and the cable support 4, the sliding block 3 is arranged between the upper sliding surface and the lower sliding surface of the top plate 1 and the bottom plate 2, and the sliding block 3 can slide on the two sliding surfaces. The shape memory alloy inhaul cable 5 is arranged to play a role in limiting the multidimensional displacement of the support and consuming seismic energy, so that the support cannot generate overlarge displacement even under the action of strong shock, the support is protected, and the shock insulation performance of the support is improved; meanwhile, an upper sliding surface and a lower sliding surface are arranged in the multidimensional control SMA-complex friction pendulum vibration isolation system, so that the displacement capacity of the support is improved.
In the multidimensional control SMA-complex friction pendulum vibration isolation system, the upper sliding concave surface of the top plate 1 and the lower sliding concave surface of the bottom plate 2 are both curved surfaces, and the surface of the sliding block 3 matched with the sliding surface is a convex surface; the upper sliding concave curved surface of the top plate 1 is matched with the upper convex curved surface of the sliding block 3 to form a pair of arc sliding surfaces, and the upper convex curved surface of the sliding block 3 can slide along the upper sliding concave curved surface of the top plate 1; the lower sliding concave curved surface of the bottom plate 2 is matched with the lower convex curved surface of the sliding block 3 to form another pair of circular arc sliding surfaces, and the lower convex curved surface of the sliding block 3 can slide along the lower sliding concave curved surface of the bottom plate 2. Shape memory alloy cable 5 has evenly arranged along the periphery between roof 1 and the bottom plate 2, and shape memory alloy cable 5's upper and lower end is respectively through anchor clamps 6 and roof 1, bottom plate 2 fixed connection.
The multidimensional control SMA-complex friction pendulum vibration isolation system has a circular appearance, and the top surface and the bottom surface have the same structure. The shape memory alloy inhaul cables 5 are arranged on the periphery of the multidimensional control SMA-complex friction pendulum vibration isolation system, two ends of the shape memory alloy inhaul cables 5 are fixedly connected with the top plate 1 and the bottom plate 2 respectively, and 8 shape memory alloy inhaul cables 5 and 8 inhaul cable supports 4 are arranged respectively.
In the multidimensional control SMA-complex friction pendulum vibration isolation system described in this embodiment, the slider 3 is set to be a cylinder, and two end faces of the cylinder are processed to be curved surfaces with a certain curvature radius, then upper and lower convex curved surfaces of the slider 3 are coated with polytetrafluoroethylene friction materials, and then are respectively in sliding fit with the sliding surfaces of the top plate 1 and the bottom plate 2, the curvature radii of the upper and lower sliding surfaces of the upper sliding concave surface of the top plate 1 and the lower sliding concave surface of the bottom plate 2 are set to be the same, the curvature radius of the curved surface in sliding fit with the sliding surfaces of the slider 3 and the top plate 1 is the same as the curvature radius of the sliding surface of the top plate 1, and correspondingly, the curvature radius of the curved surface in sliding fit with the sliding surfaces of the slider 3 and the.
In this embodiment, the shape memory alloy wire 5 is formed by winding a plurality of strands of shape memory alloy wires, as shown in fig. 3. Under the action of earthquake, the support cover plate is translated, and the alloy wires are stretched accordingly, so that the effects of energy consumption and limiting are achieved. The number of strands of the shape memory alloy wire constituting the shape memory alloy cord has no fixed value, but the diameter thereof is 1mm, 0.5mm, 1.5mm or a combination of several of them. After the shape memory alloy wire is wound to form the shape memory alloy inhaul cable, the shape memory alloy inhaul cable is fixed through a clamp 6, and the shape memory alloy inhaul cable 5 is connected with the top plate 1 and the bottom plate 2 through the clamp 6.
In this embodiment, the slider 3 may be made into an integral structure as shown in fig. 1, or may be a split structure as shown in fig. 4 and 5, or other reasonable structures.
The multidimensional control SMA-complex friction pendulum vibration isolation system has the working principle (motion state) as shown in fig. 6, when an earthquake occurs, the multidimensional control SMA-complex friction pendulum vibration isolation system is subjected to the action of the earthquake, the top plate 1 generates displacement, the sliding block 3 starts to slide, the earthquake energy is isolated through the sliding of the sliding block 3, and the earthquake energy is consumed through friction contact. At the same time, the shape memory alloy cable 5 is displaced accordingly. The shape memory alloy inhaul cable 5 starts to stretch, provides restoring force and tensile capacity and plays a role in energy consumption. When the shape memory alloy inhaul cable 5 reaches the preset displacement amplitude, the top plate 1 cannot continuously generate displacement, so that the limiting effect on the whole support is achieved, and the support is protected from being damaged due to overlarge displacement.
As shown in fig. 7 to 8, in the multidimensional control SMA-complex friction pendulum vibration isolation system provided in this embodiment, the top plate 1 has an upper sliding surface, the bottom plate 2 has a lower sliding surface, the bottom plate 2 is provided with the cable support 4, the shape memory alloy cable 5 is provided among the top plate 1, the bottom plate 2 and the cable support 4, the slider 3 is disposed between the upper and lower sliding surfaces of the top plate 1 and the bottom plate 2, and the slider 3 can slide on the two sliding surfaces. The upper sliding surface of the top plate 1 and the lower sliding surface of the bottom plate 2 are both concave surfaces, the surfaces of the sliding block 3 matched with the upper sliding surface and the lower sliding surface are convex surfaces, the sliding block 3 is arranged between the upper sliding surface and the lower sliding surface, and the sliding block 3 can slide on the two sliding surfaces. The matching surface of the sliding block 3 and the upper sliding surface is an upper convex surface, and the lower convex surface and the upper convex surface of the matching surface of the sliding block 3 and the lower sliding surface are curved surfaces. The surfaces of the sliding block 3, which are matched with the upper sliding surface and the lower sliding surface are convex surfaces, and the upper convex curved surface of the sliding block 3, which is matched with the upper sliding surface and the lower convex curved surface of the sliding block 3, which is matched with the lower sliding surface are coated with polytetrafluoroethylene friction materials. The multidimensional control SMA-complex friction pendulum vibration isolation system with the structure can realize the effect of limiting energy consumption, limit the overlarge displacement of the vibration isolation system in a multidimensional direction under the action of strong vibration, protect the vibration isolation system from being damaged, better play the vibration isolation effect of the vibration isolation system, and simultaneously have two sliding surfaces, thereby improving the displacement output capacity.
Example 2
According to the multidimensional control SMA-complex friction pendulum vibration isolation system provided by the embodiment, when the curvature radiuses of the upper sliding surface and the lower sliding surface of the top plate 1 and the bottom plate 2 are different, the adaptability of the multidimensional control SMA-complex friction pendulum vibration isolation system is improved. That is, unlike embodiment 1, the radius of curvature of the sliding surface of the bottom plate 2 and the radius of curvature of the sliding surface of the top plate 1 are set to be different, so that the rigidity and damping characteristics of the friction pendulum support can be changed according to the movement of the friction pendulum support in different cases, thereby improving the adaptability.
Example 3
The multidimensional control SMA-complex friction pendulum vibration isolation system provided by the embodiment is different from the embodiment 1 in that the main structure of the sliding block 3 is a cuboid, two end faces in the length direction of the cuboid are processed into curved surfaces with a certain curvature radius, then polytetrafluoroethylene friction materials are coated on the curved surfaces, and then the curved surfaces are respectively matched with the sliding surfaces on the top plate 1 and the bottom plate 2 in a sliding mode, the curvature radius of the curved surface matched with the sliding surface of the top plate 1 in a sliding mode is identical to the curvature radius of the sliding surface of the top plate 1, and correspondingly, the curvature radius of the curved surface matched with the sliding surface of the bottom plate 2 in a sliding mode is identical to the curvature radius of the sliding surface of the.
Example 4
The multidimensional control SMA-complex friction pendulum vibration isolation system provided by the embodiment is different from the embodiment 1 in that the main structure of the sliding block 3 is a cube, any two parallel end surfaces of the cube are processed into curved surfaces with a certain curvature radius, then polytetrafluoroethylene friction materials are coated on the curved surfaces, and then the curved surfaces are respectively matched with the sliding surfaces on the top plate 1 and the bottom plate 2 in a sliding manner, the curvature radius of the curved surface matched with the sliding surface of the top plate 1 in a sliding manner is the same as that of the sliding surface of the top plate 1, and correspondingly, the curvature radius of the curved surface matched with the sliding surface of the bottom plate 2 in a sliding manner is the same as that of the sliding surface of the bottom plate 2.
Example 5
The multidimensional control SMA-complex friction pendulum vibration isolation system is different from the embodiment 1 in that the stay cable supports and the shape memory alloy stay cables are uniformly arranged around the multidimensional control SMA-complex friction pendulum vibration isolation system, and the angles and the number of the stay cable supports 4 and the shape memory alloy stay cables 5 can be adjusted according to requirements. The angle between each inhaul cable support 4 can be 45 degrees, and the angle between each inhaul cable support 4 is also adjusted according to the actual situation; the angles among the shape memory alloy inhaul cables 5 are adjusted according to actual conditions.
Example 6
The multidimensional control SMA-complex friction pendulum vibration isolation system provided by the embodiment is different from the embodiment in that the shape memory alloy inhaul cable 5 can be directly arranged on the basis of the existing friction pendulum support with a single sliding surface to play a role in limiting and dissipating energy.
The foregoing is merely illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention; the above description is only for the specific embodiment of the present invention, and is not intended to limit the scope of the present invention; any modification, equivalent replacement, improvement and the like of the technical solution of the present invention by a person of ordinary skill in the art without departing from the design spirit of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims (10)

1. The utility model provides a multidimension control SMA-compound friction pendulum shock insulation system, includes roof, bottom plate and slider, its characterized in that: the top plate has an upper sliding surface, the bottom plate has a lower sliding surface, set up the cable on the bottom plate and support, the top plate the bottom plate the cable supports and sets up the shape memory alloy cable between the three, the slider is arranged between two upper and lower glide planes of top plate and bottom plate, the slider can slide on two glide planes.
2. The multi-dimensional control SMA-complex friction pendulum seismic isolation system of claim 1, wherein: the upper sliding surface of the top plate and the lower sliding surface of the bottom plate are both concave surfaces.
3. The multi-dimensional control SMA-complex friction pendulum seismic isolation system of claim 2, wherein: the curvature radiuses of the upper and lower sliding surfaces are the same.
4. The multi-dimensional control SMA-complex friction pendulum seismic isolation system of claim 2, wherein: the curvature radiuses of the upper sliding surface and the lower sliding surface are different.
5. The multi-dimensional control SMA-complex friction pendulum seismic isolation system of claim 1, wherein: the number of the stay cable supports is multiple.
6. A multidimensional control SMA-complex friction pendulum seismic isolation system as recited in claim 5 wherein: the number of the shape memory alloy inhaul cables is multiple.
7. The multi-dimensional control SMA-complex friction pendulum seismic isolation system of claim 6, wherein: the plurality of stay cable supports and the plurality of shape memory alloy stay cables are uniformly arranged around the multidimensional control SMA-complex friction pendulum vibration isolation system.
8. The multi-dimensional control SMA-complex friction pendulum seismic isolation system of claim 7, wherein: the angles and the number of the stay cable supports and the shape memory alloy stay cables are adjusted according to requirements.
9. The multi-dimensional control SMA-complex friction pendulum seismic isolation system of claim 8, wherein: the angle between each cable support is 45 degrees.
10. The multi-dimensional control SMA-complex friction pendulum seismic isolation system of claim 8, wherein: the angle between each cable support is adjusted according to actual conditions.
CN201910988716.XA 2019-10-17 2019-10-17 Multidimensional control SMA-complex friction pendulum shock isolation system Pending CN110685368A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113374107A (en) * 2021-06-30 2021-09-10 广州大学 Variable-rigidity friction pendulum support

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113374107A (en) * 2021-06-30 2021-09-10 广州大学 Variable-rigidity friction pendulum support

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