CN114991332B - Vibration and shock double-control three-dimensional vibration isolation combined supporting member with negative Poisson ratio effect - Google Patents
Vibration and shock double-control three-dimensional vibration isolation combined supporting member with negative Poisson ratio effect Download PDFInfo
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- CN114991332B CN114991332B CN202210625853.9A CN202210625853A CN114991332B CN 114991332 B CN114991332 B CN 114991332B CN 202210625853 A CN202210625853 A CN 202210625853A CN 114991332 B CN114991332 B CN 114991332B
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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
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- 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
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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
- E04B1/36—Bearings or like supports allowing movement
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- 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
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- 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
- E04H9/0237—Structural braces with damping devices
Abstract
The invention discloses a vibration double-control three-dimensional vibration isolation combined supporting member with a negative Poisson ratio effect, which comprises a friction pendulum support, an NPR (negative pressure resistance) bidirectional damper and a vertical vibration isolation member, wherein the friction pendulum support is provided with a support base; when vertical micro-vibration occurs, the effect of vertical vibration isolation is achieved under the action of the weak-vibration steel spring assembly; when horizontal strong vibration and vertical strong vibration occur, the NPR bidirectional damper consumes energy through the characteristic of horizontal reciprocating motion, when the displacement is further increased, the diameter-variable part with the increased radial size in the middle is moved into the installation cavity, so that the distance between the installation cavities is increased, the strong vibration steel spring assembly enters a working state, and the vertical strong vibration control effect is achieved; meanwhile, the variable-diameter part can provide certain vertical supporting force, the structure is more stable, the capability conversion of vertical weak vibration, vertical strong vibration and horizontal strong vibration can be realized through the structural matching of the friction pendulum support, the NPR bidirectional damper and the vertical vibration isolation component, and the vibration double-control decoupling of the horizontal strong vibration, the vertical weak vibration and the vertical strong vibration is realized.
Description
Technical Field
The invention relates to the technical field of civil engineering, in particular to a vibration and double control three-dimensional vibration isolation combined supporting member with a negative Poisson ratio effect.
Background
Weak vibration caused by rail transit operation and strong vibration risk caused by earthquake occur simultaneously, and the requirements on safety and normalized micro-vibration control of rare earthquakes are higher and higher under the further improvement of the living standard of people; the existing research shows that the weak vibration caused by the rail transit operation and the strong vibration caused by the earthquake have larger difference, and the vibration caused by the rail transit is characterized by small amplitude, high frequency, mainly vertical vibration and relatively higher vibration frequency; the vibration caused by the earthquake is characterized by large amplitude, low frequency, large horizontal and vertical vibration and relatively low vibration frequency.
The vibration and earthquake double control related technical means is an effective way for comprehensively solving the high-frequency and low-amplitude environmental vibration caused by the operation of rail transit and relieving the structural damage caused by the strong vibration of low frequency and high amplitude caused by the earthquake; however, the key to solve the problem of double control of vibration and shock is the design of horizontal and vertical strong vibration and vertical weak vibration control layers to meet the requirements of seismic safety and vibration comfort; the conventional rubber vibration isolation support in bridge engineering or building engineering has strong horizontal deformation capability, large limit shear strain and strong horizontal vibration resistance; the metal spring support has large bearing capacity, small vertical rigidity and good vertical micro-vibration resistance effect; the two structures have certain advantages and disadvantages, so how to fully utilize the advantages of the two types of supports and effectively abandon the disadvantages of the two types of supports becomes an important target for solving multidirectional multi-target vibration decoupling at the present stage.
Therefore, how to provide a stable structure, which can realize the capability conversion of vertical weak vibration, vertical strong vibration and horizontal strong vibration, has the effects of drop prevention, energy consumption and three-dimensional vibration control decoupling, and can increase the stability of the building structure, and the vibration double-control three-dimensional vibration isolation combined supporting member with the negative poisson's ratio effect is a problem that needs to be solved urgently by technical personnel in the field.
Disclosure of Invention
In view of this, the present invention provides a vibration double-control three-dimensional vibration isolation combined supporting member with negative poisson's ratio effect, and aims to solve the above technical problems.
In order to achieve the purpose, the invention adopts the following technical scheme:
a vibration double-control three-dimensional vibration isolation combined supporting member with a negative Poisson ratio effect is fixed between an upper member and a lower supporting member of a building; a combined support is fixed on the lower supporting component, and an installation cavity is formed in the combined support; the vibration isolation device comprises a friction pendulum support, an NPR bidirectional damper and a vertical vibration isolation component;
the friction pendulum support comprises an upper support plate and a lower support plate; the upper support plate is fixedly connected to the upper building component; the lower support plate is fixedly connected to the top of the combined support; the upper support plate and the lower support plate are in sliding connection through a connecting piece, so that the upper support plate can horizontally slide along the lower support plate;
an NPR bi-directional damper; the NPR bidirectional dampers are multiple and are symmetrically fixed on two sides of the installation cavity; each NPR bidirectional damper comprises a sleeve and a sliding rod; one end of the sleeve is positioned in the mounting cavity, the other end of the sleeve extends to the outer side of the mounting cavity and is fixedly connected to the upper building component, the middle of the sleeve is provided with a diameter-variable part with the radial size increased, and the diameter-variable part is positioned on the outer side of the mounting cavity; the middle part of the sliding rod is provided with a limiting body which is in sliding connection with the diameter-changing part, and rod bodies of the sliding rod, which are positioned at two sides of the limiting body, are connected with the inner side wall of the sleeve through elastic pieces; so that the limiting body and the rod body realize bidirectional sliding displacement in the sleeve; one end of the sliding rod, which is far away from the upper building component, extends to the outer side of the sleeve and is fixedly connected to the inner bottom wall of the installation cavity;
the vertical vibration isolation component comprises a weak vibration steel spring assembly and a strong vibration steel spring assembly, wherein the weak vibration steel spring assembly and the strong vibration steel spring assembly are fixed in the installation cavity and are positioned between the sleeves in symmetrical arrangement.
Through the technical scheme, the vibration double-control three-dimensional vibration isolation combined supporting member with the negative Poisson ratio effect comprises a friction pendulum support, an NPR bidirectional damper and a vertical vibration isolation member; when vertical micro vibration occurs, the effect of vertical vibration isolation can be achieved under the action of the weak vibration steel spring assembly; when earthquake occurs, strong horizontal strong vibration and vertical vibration are generated, the upper part component and the lower part supporting component of the building can generate relative horizontal displacement, so that the upper supporting plate can relatively slide along the horizontal plane of the lower supporting plate, meanwhile, the NPR bidirectional damper fixedly connected with the upper part component of the building can generate displacement, the NPR bidirectional damper enters an energy consumption state, and under the condition of large horizontal displacement, the upper part and the lower part of the NPR bidirectional damper can perform energy consumption and expansion characteristic through the horizontal reciprocating motion characteristic, at the moment, the up-and-down motion of the weak vibration steel spring assembly is locked, and the control capability of vertical micro vibration after the earthquake is protected; when the displacement of the sleeve is further increased, the diameter-changing part with the increased radial size at the middle part moves into the installation cavity, so that the distance between the installation cavities is increased, the strong vibration steel spring assembly enters a working state, meanwhile, the diameter-changing part of the NPR bidirectional damper sleeve can also provide a certain vertical supporting force, the structure is ensured to be more stable, and the vertical strong vibration control effect is achieved; the invention has stable structure, can realize the capability conversion of vertical weak vibration, vertical strong vibration and horizontal strong vibration by the structural cooperation of the friction pendulum support, the NPR bidirectional damper and the vertical vibration isolation component, has the effects of drop prevention, energy consumption and three-dimensional vibration control decoupling, reduces the damage of micro vibration and strong vibration to a building structure, and saves the repair cost.
Preferably, in the vibration double-control three-dimensional vibration isolation combined supporting member with the negative poisson's ratio effect, the connecting piece comprises a sliding block and a fixed block; the sliding block is connected to the upper surface of the lower support plate in a sliding mode, and the upper portion of the sliding block is a hemispherical body; the fixing block is fixed on the lower surface of the upper support plate, and the lower part of the fixing block is a hemispherical groove matched with the hemispherical body; the fixed block is hinged with the sliding block. This structural arrangement can guarantee to remain relative level throughout between upper bracket board and the undersetting board to can realize sliding of horizontal plane along the undersetting board throughout, the structure is more stable.
Preferably, in the vibration double-control three-dimensional vibration isolation combined supporting member with the negative poisson's ratio effect, the number of the weak vibration steel spring assemblies and the number of the strong vibration steel spring assemblies are both multiple; the weak vibration steel spring assemblies are fixed in the installation cavity at intervals; and the strong vibration steel spring assemblies are respectively fixed in the installation cavity, and each strong vibration steel spring assembly is fixed between two adjacent weak vibration steel spring assemblies. The structure is simple and stable.
Preferably, in the vibration double-control three-dimensional vibration isolation combined supporting member with the negative poisson's ratio effect, the combined supporting seat comprises an upper plate and a lower plate; the mounting cavity is formed between the upper plate and the lower plate.
Preferably, in the vibration double-control three-dimensional vibration isolation combined supporting member with the negative poisson's ratio effect, each weak vibration steel spring assembly comprises a first sleeve and a first steel spring; the first sleeve comprises a first upper sleeve and a first lower sleeve; the first upper sleeve is fixed on the upper plate, and the first lower sleeve is fixed on the lower plate and nested in the first upper sleeve; the first steel spring is positioned in a space formed by the first upper sleeve and the first lower sleeve, and the bottom end of the first steel spring is fixed on the lower plate;
each strong vibration steel spring assembly comprises a second sleeve and a second steel spring; the second sleeve comprises a second upper sleeve and a second lower sleeve; the second upper sleeve is fixed on the upper plate; the second lower sleeve is fixed on the lower plate; the second upper sleeve and the second lower sleeve are both semicylindrical bodies, the second steel spring is positioned in a space formed by the second upper sleeve and the second lower sleeve, and the bottom end of the second steel spring is fixed on the second upper sleeve. The bottom of the first steel spring is fixed on the lower plate, and the top end of the first steel spring is not fixed, so that the structure can be suitable for vertical micro-vibration; before vertical micro-vibration and the NPR bidirectional damper enter a working state, the strong vibration steel spring assembly does not enter the working state; the bottom end of the second steel spring is fixed on the second upper sleeve, the top end of the second steel spring is not fixed, and the top end of the second steel spring is not in contact with the second lower sleeve before vertical micro-vibration and the NPR bidirectional damper expands the distance between the upper plate and the lower plate; when a vertical strong shock occurs, after the NPR bidirectional damper enters a working state, the NPR bidirectional damper exerts the expansion characteristic thereof, so that the distance between the mounting cavity formed between the upper plate and the lower plate is increased, at the moment, the top end of the second spring is in contact with the second lower sleeve, the shock absorption and buffering effects are realized, meanwhile, the strong shock steel spring assembly enters the working state, and the weak shock steel spring assembly timely exits the working state; under the action of the NPR bidirectional damper, the function switching of the weak vibration steel spring assembly and the strong vibration steel spring assembly is realized, and the vibration double-control decoupling of horizontal strong vibration, vertical weak vibration and vertical strong vibration is realized.
Preferably, in the vibration double-control three-dimensional vibration isolation combined supporting member with the negative poisson's ratio effect, the diameter-variable part is in a bidirectional conical olive-like shape; the position of the maximum cross section of the middle part of the reducing part is provided with a first horizontal section with a uniform cross section, the structure of the limiting body is the same as that of the reducing part, and the position of the maximum cross section of the middle part of the limiting body is provided with a second horizontal section with a uniform cross section; the length of the second horizontal section is smaller than that of the first horizontal section, and the second horizontal section is attached to the first horizontal section. The variable-diameter part and the limiting body are both olive-shaped, the limiting body can perform bidirectional sliding displacement in the variable-diameter part, has high rigidity and strength, and can ensure that the limiting body does not deform in the sliding process; meanwhile, when large displacement occurs, the damping device is used for dissipating energy and playing the characteristics of tension and expansion of the damping device, so that the distance between the mounting cavity formed between the upper plate and the lower plate is increased, the function switching of the weak vibration steel spring assembly and the strong vibration steel spring assembly is further realized, and the vibration and vibration double-control decoupling of horizontal strong vibration, vertical weak vibration and vertical strong vibration is better realized.
Preferably, in the vibration double-control three-dimensional vibration isolation combined supporting member with the negative poisson's ratio effect, the inner side walls of the two ends of the sleeve are respectively fixed with a first stop block; a second stop block is fixed on each rod body; and a spring is sleeved on the rod body, and two ends of the spring are respectively fixed on the first check block and the second check block. The first stop block and the second stop block are arranged as locking components and can play a role in restraining the spring; when the ultra-large deformation and vibration occur, the limiting body and the rod body push against the spring, the first stop block and the second stop block when moving, so that the locking effect can be achieved, and the upper part of the building is prevented from falling down; the spring is a tension-compression steel spring, has a higher elastic limit, plays a role in alleviating vibration and impact by utilizing the energy stored in elastic deformation, simultaneously ensures that the maximum elongation of the tension spring does not exceed the elastic limit when the compression spring is shortest, and ensures that the tension spring can recover so as to provide reliable restoring force; the elastic limit on the rod body is greater than the limit friction force of the limiting body sliding in the diameter changing part, so that the sliding displacement of the rod body in the sleeve can be realized, and the elastic limit is suitable for deformation and vibration in different degrees.
Preferably, in the vibration double-control three-dimensional vibration isolation combined supporting member with the negative poisson's ratio effect, a fixing piece is fixed at one end of the sleeve extending out of the installation cavity, and is fixedly connected with the building upper member through a connecting plate; an end plate is fixedly connected to one end, far away from the upper building component, of the sliding rod; the end plate is fixed on the lower plate through the connecting piece. The structure is stable.
Preferably, in the vibration double-control three-dimensional vibration isolation combined supporting member with the negative poisson's ratio effect, the section of the sleeve is circular, the sleeve is made of low-carbon steel, and a lubricating coating and an anti-corrosion coating are coated on the inner side wall of the sleeve. Adopt low carbon steel for the sleeve has certain thickness and structural strength, even the cone of spacing body slides ejecting back, still has very high structural strength, makes overall structure more firm, when taking place great vibrations, can exert its auxetic action simultaneously, makes the interval grow of the installation cavity that forms between upper plate and the hypoplastron, simultaneously with the cooperation of macroseism steel spring assembly, realizes the control action of vertical macroseism.
Preferably, in the vibration double-control three-dimensional vibration isolation combined supporting member with the negative poisson's ratio effect, a teflon coating is coated between the first upper sleeve and the first lower sleeve. The teflon coating layer has the function of reducing the friction force between the first upper sleeve and the first lower sleeve.
Through the technical scheme, compared with the prior art, the vibration-control three-dimensional vibration isolation combined supporting member with the negative Poisson's ratio effect has the following beneficial effects that:
1. simple structure is stable, can increase building structure's stability, safe and reliable.
2. The vibration isolation structure can be suitable for different vibration modes, reduces damage to a building structure and reduces repair cost.
3. When vertical micro-vibration occurs, the friction pendulum support and the NPR bidirectional damper do not enter a working state, and the vertical micro-vibration can be controlled under the action of the weak vibration steel spring assembly; when an earthquake occurs, strong horizontal strong vibration and vertical vibration are generated, the upper part component and the lower part supporting component of the building can generate relative horizontal displacement, so that relative horizontal displacement occurs between the upper supporting plate and the lower supporting plate, at the moment, the NPR bidirectional damper fixedly connected with the upper part component of the building can generate displacement, the NPR bidirectional damper has the expansion function and the multistage displacement control capability, so that the NPR bidirectional damper enters an energy consumption state, and under the condition of large horizontal displacement, the vertical movement of the weak vibration steel spring assembly is locked through the horizontal reciprocating motion characteristic and the expansion characteristic of the NPR bidirectional damper, so that the vertical micro-vibration control capability after the earthquake is protected; when the sleeve displacement further increases, the reducing position of its middle part radial dimension increase moves to the installation cavity inside for the interval grow of installation cavity, thereby make the macroseism steel spring subassembly get into operating condition, simultaneously, the reducing portion of the two-way attenuator sleeve of NPR can also provide certain vertical holding power, guarantees that the structure is more stable.
4. Through the structural cooperation of the friction pendulum support, the NPR bidirectional damper and the vertical vibration isolation component, the capability conversion of vertical weak vibration, vertical strong vibration and horizontal strong vibration can be realized, and the vibration double-control decoupling of horizontal strong vibration, vertical weak vibration and vertical strong vibration can be realized.
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 embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic view of an installation structure of a vibration double-control three-dimensional vibration isolation support structure with a negative Poisson's ratio component provided by the invention;
FIG. 2 is a schematic structural diagram of a friction pendulum support according to the present invention;
FIG. 3 is a schematic structural diagram of an NPR bi-directional damper provided by the present invention;
FIG. 4 is a schematic diagram of the displacement structure of an NPR bidirectional damper provided by the invention;
fig. 5 to 7 are schematic structural views illustrating a displacement process of the vibration double-control three-dimensional vibration isolation supporting structure with the negative poisson's ratio component according to the present invention.
Wherein:
1-building upper components;
2-a lower support member;
3-a combined support;
31-upper plate; 32-lower plate;
4-a friction plate support;
41-an upper support plate; 42-lower support plate; 43-a connector; 431-a slide block; 432-fixed block;
5-NPR two-way damper;
51-a sleeve; 511-diameter-variable part; 512-a first stop; 513-a fixing member; 52-a slide bar; 521-a limiting body; 522-rod body; 5221-stop two; 523-end plate;
6-vertical vibration isolation members;
61-weak vibration steel spring assembly; 611-a first sleeve; 6111-first upper sleeve; 6112-first lower sleeve; 612-a first steel spring; 62-a macroseism steel spring assembly; 621-a second sleeve; 6211-a second upper sleeve; 6212-a second lower sleeve; 622-second steel spring.
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 obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to the attached drawings 1 to 7, the embodiment of the invention discloses a vibration double-control three-dimensional vibration isolation combined supporting member with a negative Poisson ratio effect, which is fixed between an upper member 1 and a lower supporting member 2 of a building; a combined support 3 is fixed on the lower supporting member 2, and an installation cavity is arranged inside the combined support 3; the vibration isolation device comprises a friction pendulum support 4, an NPR bidirectional damper 5 and a vertical vibration isolation component 6;
the friction pendulum support 4 comprises an upper support plate 41 and a lower support plate 42; the upper support plate 41 is fixedly connected to the building upper member 1; the lower support plate 42 is fixedly connected to the top of the combined support 3; the upper support plate 41 and the lower support plate 42 are slidably connected through a connecting piece 43, so that the upper support plate 41 can horizontally slide along the lower support plate 42;
an NPR bidirectional damper 5; the number of the NPR bidirectional dampers 5 is multiple, and the NPR bidirectional dampers are symmetrically fixed on two sides of the installation cavity; each NPR bidirectional damper 5 includes a sleeve 51 and a slide rod 52; one end of the sleeve 51 is positioned in the installation cavity, the other end of the sleeve 51 extends to the outer side of the installation cavity and is fixedly connected to the upper building component 1, the middle part of the sleeve 51 is provided with a diameter-changing part 511 with the increased radial size, and the diameter-changing part 511 is positioned on the outer side of the installation cavity; the middle part of the sliding rod 52 is provided with a limiting body 521 which is in sliding connection with the diameter-changing part 511, and rod bodies 522 of the sliding rod 52 which are positioned at two sides of the limiting body 521 are connected with the inner side wall of the sleeve 51 through elastic parts; so that the limiting body 521 and the rod body 522 realize bidirectional sliding displacement in the sleeve 51; one end of the sliding rod 52 far away from the building upper component 1 extends to the outer side of the sleeve 51 and is fixedly connected to the inner bottom wall of the installation cavity;
the vertical vibration isolation member 6 comprises a weak vibration steel spring assembly 61 and a strong vibration steel spring assembly 62, and the weak vibration steel spring assembly 61 and the strong vibration steel spring assembly 62 are fixed inside the installation cavity and are positioned between the symmetrically arranged sleeves 51.
In order to further optimize the above technical solution, the connecting member 43 includes a sliding block 431 and a fixed block 432; the sliding block 431 is connected to the upper surface of the lower support plate 42 in a sliding manner, and the upper part of the sliding block 431 is a hemispherical body; the fixing block 432 is fixed on the lower surface of the upper support plate 41, and the lower part of the fixing block 432 is a hemispherical groove matched with the hemispherical body; the fixed block 432 is hinged to the slider 431.
In order to further optimize the technical scheme, the number of the weak vibration steel spring assemblies 61 and the number of the strong vibration steel spring assemblies 62 are multiple; and a plurality of weak vibration steel spring assemblies 61 are fixed in the installation cavity at intervals; a plurality of macroseism steel spring assembly 62 are fixed respectively inside the installation cavity, and every macroseism steel spring assembly 62 is fixed between two adjacent weak vibration steel spring assemblies 61.
In order to further optimize the above solution, the combined support 3 comprises an upper plate 31 and a lower plate 32; a mounting cavity is formed between the upper plate 31 and the lower plate 32.
In order to further optimize the above technical solution, each weak vibration steel spring assembly 61 comprises a first sleeve 611 and a first steel spring 612; the first sleeve 611 includes a first upper sleeve 6111 and a first lower sleeve 6112; the first upper sleeve 6111 is fixed on the upper plate 31, and the first lower sleeve 6112 is fixed on the lower plate 32 and is nested in the first upper sleeve 6111; the first steel spring 612 is located in the space formed by the first upper sleeve 6111 and the first lower sleeve 6112, and the bottom end thereof is fixed on the lower plate 32;
each macroseism steel spring assembly 62 comprises a second sleeve 621 and a second steel spring 622; the second sleeve 621 includes a second upper sleeve 6211 and a second lower sleeve 6212; a second upper sleeve 6211 is fixed to the upper plate 31; the second lower sleeve 6212 is fixed to the lower plate 32; the second upper sleeve 6211 and the second lower sleeve 6212 are both semicylindrical bodies, and the second steel spring 622 is positioned in a space formed by the second upper sleeve 6211 and the second lower sleeve 6212, and the bottom ends of the second steel spring are fixed on the second upper sleeve 6211.
In order to further optimize the technical scheme, the diameter changing part 511 is in a bidirectional conical olive shape; the position of the maximum cross section of the middle part of the diameter-variable part 511 is provided with a first horizontal section with a uniform cross section, the structure of the limiting body 521 is the same as that of the diameter-variable part 511, and the position of the maximum cross section of the middle part of the limiting body 521 is provided with a second horizontal section with a uniform cross section; the length of the second horizontal section is smaller than that of the first horizontal section, and the second horizontal section is attached to the first horizontal section.
In order to further optimize the technical scheme, the inner side walls at two ends of the sleeve 51 are respectively fixed with a first stop block 512; a second stop block 5221 is fixed on each rod body 522; and the rod 522 is sleeved with a spring 53, and two ends of the spring 53 are respectively fixed on the first stop 512 and the second stop 5221.
In order to further optimize the technical scheme, a fixing part 513 is fixed at one end of the sleeve 51 extending outside the installation cavity and is fixedly connected with the upper building component 1 through a connecting plate; an end plate 523 is fixedly connected to one end of the sliding rod 52 far away from the upper building component 1; the end plate 523 is fixed to the lower plate 32 by the connecting member.
In order to further optimize the technical scheme, the section of the sleeve 51 is circular, the sleeve is made of low-carbon steel, and the inner side wall of the sleeve 51 is coated with a lubricating coating and an anti-corrosion coating.
In order to further optimize the above technical solution, a teflon coating is coated between the first upper sleeve 6111 and the first lower sleeve 6112.
The invention can be applied to bridge structures and other building structures to improve the beam falling protection effect of the building structures.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A vibration double-control three-dimensional vibration isolation combined supporting member with a negative Poisson ratio effect is fixed between an upper member (1) and a lower supporting member (2) of a building; a combined support (3) is fixed on the lower supporting member (2), and an installation cavity is formed in the combined support (3); the vibration isolation device is characterized by comprising a friction pendulum support (4), an NPR bidirectional damper (5) and a vertical vibration isolation component (6);
the friction pendulum support (4) comprises an upper support plate (41) and a lower support plate (42); the upper support plate (41) is fixedly connected to the building upper component (1); the lower support plate (42) is fixedly connected to the top of the combined support (3); the upper support plate (41) is connected with the lower support plate (42) in a sliding manner through a connecting piece (43), so that the upper support plate (41) can horizontally slide along the lower support plate (42);
an NPR bidirectional damper (5); the number of the NPR bidirectional dampers (5) is multiple, and the NPR bidirectional dampers are symmetrically fixed on two sides of the installation cavity; each NPR bidirectional damper (5) comprises a sleeve (51) and a sliding rod (52); one end of the sleeve (51) is positioned in the mounting cavity, the other end of the sleeve extends to the outer side of the mounting cavity and is fixedly connected to the upper building component (1), the middle of the sleeve (51) is provided with a diameter-changing part (511) with the radial size increased, and the diameter-changing part (511) is positioned on the outer side of the mounting cavity; the middle part of the sliding rod (52) is provided with a limiting body (521) in sliding connection with the diameter changing part (511), and rod bodies (522) of the sliding rod (52) positioned at two sides of the limiting body (521) are connected with the inner side wall of the sleeve (51) through elastic pieces; so that the limiting body (521) and the rod body (522) realize bidirectional sliding displacement in the sleeve (51); one end of the sliding rod (52) far away from the upper building component (1) extends to the outer side of the sleeve (51) and is fixedly connected to the inner bottom wall of the installation cavity;
vertical vibration isolation component (6) are including weak steel spring component (61) and the strong steel spring component (62) that shakes, weak steel spring component (61) that shakes with strong steel spring component (62) are fixed inside the installation cavity, and are located a plurality of symmetrical arrangement between sleeve (51).
2. The vibration double-control three-dimensional vibration isolation combined supporting member with the negative Poisson's ratio effect as claimed in claim 1, wherein the connecting piece (43) comprises a sliding block (431) and a fixed block (432); the sliding block (431) is connected to the upper surface of the lower support plate (42) in a sliding mode, and the upper portion of the sliding block (431) is a hemispherical body; the fixed block (432) is fixed on the lower surface of the upper support plate (41), and the lower part of the fixed block (432) is a hemispherical groove matched with the hemispherical body; the fixed block (432) is hinged with the sliding block (431).
3. The vibration double-control three-dimensional vibration isolation combined supporting member with the negative Poisson's ratio effect as claimed in claim 1, wherein the number of the weak vibration steel spring assemblies (61) and the strong vibration steel spring assemblies (62) is multiple; the weak vibration steel spring assemblies (61) are fixed in the mounting cavity at intervals; the strong vibration steel spring assemblies (62) are fixed in the installation cavity respectively, and each strong vibration steel spring assembly (62) is fixed between two adjacent weak vibration steel spring assemblies (61).
4. The vibration double-control three-dimensional vibration isolation combined supporting member with the negative Poisson's ratio effect according to claim 1, wherein the combined support (3) comprises an upper plate (31) and a lower plate (32); the mounting cavity is formed between the upper plate (31) and the lower plate (32).
5. The vibration double-control three-dimensional vibration isolation combined supporting member with the negative Poisson's ratio effect according to claim 4, wherein each weak vibration steel spring assembly (61) comprises a first sleeve (611) and a first steel spring (612); the first sleeve (611) comprises a first upper sleeve (6111) and a first lower sleeve (6112); the first upper sleeve (6111) is fixed on the upper plate (31), and the first lower sleeve (6112) is fixed on the lower plate (32) and is nested in the first upper sleeve (6111); the first steel spring (612) is positioned in a space formed by the first upper sleeve (6111) and the first lower sleeve (6112), and the bottom end of the first steel spring is fixed on the lower plate (32);
each of the macroseism steel spring assemblies (62) comprises a second sleeve (621) and a second steel spring (622); the second sleeve (621) comprises a second upper sleeve (6211) and a second lower sleeve (6212); the second upper sleeve (6211) is fixed to the upper plate (31); the second lower sleeve (6212) being fixed to the lower plate (32); the second upper sleeve (6211) and the second lower sleeve (6212) are both semicylindrical bodies, the second steel spring (622) is positioned in a space formed by the second upper sleeve (6211) and the second lower sleeve (6212), and the bottom end of the second steel spring is fixed on the second upper sleeve (6211).
6. The vibration double-control three-dimensional vibration isolation combined supporting member with the negative Poisson's ratio effect as claimed in claim 4, wherein the diameter-variable part (511) is shaped like a bidirectional cone olive; the position of the maximum cross section of the middle part of the diameter-variable part (511) is provided with a first horizontal section with a uniform section, the structure of the limiting body (521) is the same as that of the diameter-variable part (511), and the position of the maximum cross section of the middle part of the limiting body (521) is provided with a second horizontal section with a uniform section; the length of the second horizontal section is smaller than that of the first horizontal section, and the second horizontal section is attached to the first horizontal section.
7. The vibration double-control three-dimensional vibration isolation combined supporting member with the negative Poisson's ratio effect as claimed in claim 4, wherein the inner side walls of the two ends of the sleeve (51) are respectively fixed with a first stop block (512); a second stop block (5221) is fixed on each rod body (522); and a spring (53) is sleeved on the rod body (522), and two ends of the spring (53) are respectively fixed on the first stop block (512) and the second stop block (5221).
8. The vibration double-control three-dimensional vibration isolation combined supporting member with the negative Poisson's ratio effect as claimed in claim 7, wherein a fixing member (513) is fixed at one end of the sleeve (51) extending outside the installation cavity and is fixedly connected with the building upper member (1) through a connecting plate; an end plate (523) is fixedly connected to one end, far away from the upper building component (1), of the sliding rod (52); the end plate (523) is fixed on the lower plate (32) through the connecting piece.
9. The vibration double-control three-dimensional vibration isolation combined supporting member with the negative Poisson's ratio effect as claimed in claim 8, wherein the cross section of the sleeve (51) is circular, the material of the sleeve is low carbon steel, and the inner side wall of the sleeve (51) is coated with a lubricating coating and an anti-corrosion coating.
10. The vibration double-control three-dimensional vibration isolation combined supporting member with the negative Poisson's ratio effect according to claim 5, wherein a Teflon coating is coated between the first upper sleeve (6111) and the first lower sleeve (6112).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210625853.9A CN114991332B (en) | 2022-06-02 | 2022-06-02 | Vibration and shock double-control three-dimensional vibration isolation combined supporting member with negative Poisson ratio effect |
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| CN202210625853.9A CN114991332B (en) | 2022-06-02 | 2022-06-02 | Vibration and shock double-control three-dimensional vibration isolation combined supporting member with negative Poisson ratio effect |
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| JP3735593B2 (en) * | 2002-06-20 | 2006-01-18 | 多摩エンジニアリング株式会社 | Seismic isolation device for buildings |
| CN105297903B (en) * | 2015-11-19 | 2017-12-08 | 中铁城建集团北京工程有限公司 | A kind of big shake and small shake rigidity switching shock-absorbing spherical support and its shock-dampening method |
| CN105604203B (en) * | 2015-12-24 | 2017-10-31 | 北京工业大学 | Double stage clip cylinder radial inflow friction-changing dampers with complex damping feature |
| CN107604810A (en) * | 2017-08-04 | 2018-01-19 | 东南大学 | A kind of Self-resetting friction pendulum three-dimensional shock damping and insulation bearing |
| CN212080029U (en) * | 2020-02-06 | 2020-12-04 | 同济大学 | Guide rail-three-way spring type three-dimensional self-adaptive rigidity vibration isolation support |
| CN111764526B (en) * | 2020-06-17 | 2021-10-01 | 北京工业大学 | Combined disc spring sliding friction self-resetting energy dissipation damper |
| CN112832399B (en) * | 2021-01-04 | 2022-03-01 | 山东电力工程咨询院有限公司 | Multistage self-adaptive composite inertial volume vibration reduction device, method and structure |
| CN215668987U (en) * | 2021-09-17 | 2022-01-28 | 衡水市橡胶总厂有限公司 | One-way large-damping anti-falling beam friction pendulum support |
| CN113914699A (en) * | 2021-09-30 | 2022-01-11 | 兰州理工大学 | Power transmission tower wind-resistant damping structure based on negative Poisson effect |
| CN114197935A (en) * | 2021-12-01 | 2022-03-18 | 北京市建筑设计研究院有限公司 | Device and method for vertical vibration isolation and horizontal vibration isolation based on friction pendulum additional damper |
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