CN114197935A - Device and method for vertical vibration isolation and horizontal vibration isolation based on friction pendulum additional damper - Google Patents
Device and method for vertical vibration isolation and horizontal vibration isolation based on friction pendulum additional damper Download PDFInfo
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- CN114197935A CN114197935A CN202111453389.1A CN202111453389A CN114197935A CN 114197935 A CN114197935 A CN 114197935A CN 202111453389 A CN202111453389 A CN 202111453389A CN 114197935 A CN114197935 A CN 114197935A
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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
- 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
- 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 relates to the technical field of building structures, in particular to a device and a method for vertical vibration isolation and horizontal vibration isolation based on an additional damper of a friction pendulum, wherein the device comprises a horizontal vibration isolation mechanism, a vertical vibration isolation mechanism and a fixing mechanism; the vibration isolation part of the vertical vibration isolation mechanism comprises a plurality of springs and a plurality of dampers. The device capable of vertically damping and horizontally isolating the vibration for the building is used for the building structure, and not only can reduce the vibration in the vertical direction, but also can reduce the vibration in the horizontal direction. When an earthquake occurs, the sliding surface of the friction pendulum in the device horizontally slides, so that the earthquake input is reduced, and the upper structure is protected. When vertical vibration is input to the lower part, the spring and the damper vibration reduction mechanism can also reduce the influence of the lower part vibration and improve the building comfort. The invention has simple manufacturing method, mature process and outstanding vibration damping and isolating effect.
Description
Technical Field
The invention relates to the technical field of building structures, in particular to a device and a method for vertical vibration isolation and horizontal vibration isolation based on an additional damper of a friction pendulum.
Background
With the rapid development of rail transit including high-speed rail and subways and the continuous encryption of urban rail transit networks, more and more construction projects cannot avoid adjacent or crossing rail transit. According to the statistical data of subway vibration of Beijing, Shanghai and Guangzhou, the ground vibration induced by the subway is mainly vertical vibration. For buildings adjacent to rail transit, when vertical vibration exceeds the national regulation limit, necessary vibration reduction measures are required, especially for buildings with high vibration requirements, such as theaters, concert halls, museums, sophisticated laboratories and the like. Environmental vibration and noise control has become a problem that must be addressed in building structure design.
Earthquake is a natural phenomenon which cannot be avoided by human beings. Under the action of earthquake, the building can be greatly horizontally deformed and even collapsed. The shock insulation technology achieves the shock absorption purpose by prolonging the self-vibration period of the structure, and after the shock insulation technology is adopted, the shock resistance of the building is obviously improved, so that the shock insulation system is suitable for various buildings such as disaster prevention and relief buildings, school buildings, important infrastructure buildings, houses, offices and the like in high-intensity earthquake areas. The seismic isolation technology is one of the most effective means for relieving earthquake disasters, and the seismic isolation technology really makes it possible that a building does not collapse in an earthquake.
The spring-added damper vibration isolator is an important means for controlling vertical vibration, however, because the allowable horizontal limit deformation of the spring vibration isolator is very small and is generally only 20-50 mm, when the allowable horizontal limit deformation is exceeded, the vertical bearing performance of the spring is sharply reduced, and the control of the horizontal deformation of the spring vibration isolator not exceeding the limit value is a crucial factor for influencing engineering safety. In non-seismic areas, the horizontal deformation of the building is small, and the vertical vibration of the structure can be reduced by adopting the spring vibration isolator. In the earthquake region, the earthquake action can cause larger horizontal deformation of the building, and when the spring vibration isolator is adopted to reduce the vertical vibration of the structure, other measures are needed to be set, so that the horizontal deformation of the spring vibration isolator is controlled within an allowable range.
At present, when a spring vibration isolator is adopted in a seismic region to control vertical vibration, a viscous damper is adopted to control the horizontal deformation of the spring vibration isolator, namely, the damper is arranged on a vibration isolation layer, the deformation of the vibration isolation layer is reduced through the energy consumption of the damper, the horizontal deformation of the spring vibration isolator is controlled within a limit value range, and meanwhile, the vertical vibration damping effect of the spring vibration isolator is not influenced. Because the allowed horizontal displacement of the spring vibration isolator is small, a viscous damper with a large tonnage is needed to limit the displacement of the vibration isolation layer within the displacement limit value of the spring vibration isolator. The large-tonnage damper not only has high manufacturing cost, but also has large internal force of the components at the joint, complex connection structure and limited reliability. Meanwhile, the displacement of the vibration isolation layer is limited within a very small range through the damper, the horizontal equivalent stiffness of the vibration isolation layer is large, the seismic effect transmitted to the upper structure cannot be effectively reduced, the vibration isolation effect is poor, and the ideal target of vertical vibration and horizontal seismic double isolation is difficult to achieve.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention aims to provide a device and a method for vertical vibration isolation and horizontal vibration isolation based on a friction pendulum additional damper, which aim to solve the technical problems in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides a vertical vibration isolation and horizontal vibration isolation device based on a friction pendulum additional damper, which comprises a horizontal vibration isolation mechanism, a vertical vibration isolation mechanism and a fixing mechanism; the horizontal shock insulation mechanism comprises a first horizontal shock insulation mechanism and a second horizontal shock insulation mechanism; the first horizontal shock isolation mechanism is connected between the fixing mechanism and the second horizontal shock isolation mechanism; the vertical vibration isolation mechanism is connected between the fixing mechanism and the second horizontal vibration isolation mechanism; the vertical vibration isolation mechanism includes: a vibration isolation part; the vibration isolation part comprises a plurality of springs and a plurality of dampers; the springs are arranged between the top plate of the fixing mechanism and the bottom plate of the second horizontal shock insulation mechanism; the plurality of dampers are arranged between the top plate of the fixing mechanism and the bottom plate of the second horizontal shock insulation mechanism.
Preferably, the spring comprises: a plurality of first springs and a plurality of second springs; the first spring is sleeved on the connecting sleeve; the dampers, the first springs and the second springs are distributed between the top plate of the fixing mechanism and the bottom plate of the second horizontal shock isolation mechanism in a matrix mode.
Preferably, the connection sleeve comprises: the device comprises a cylinder body and a sliding rod which is arranged in the cylinder body and can move in a reciprocating manner; the bottom of the cylinder is connected with a top plate of the fixing mechanism; the top of the sliding rod is connected with a bottom plate of the second horizontal shock insulation mechanism; the first spring is arranged on the periphery of the barrel.
Preferably, the first horizontal seismic isolation mechanism comprises a first limiting assembly and a second limiting assembly, and the first limiting assembly is arranged around the second limiting assembly; the second limiting assembly is arranged around the vibration isolation part; the first limiting assembly is arranged on a top plate of the fixing mechanism; the second limiting assembly is arranged on a bottom plate of the second horizontal shock isolation mechanism.
Preferably, the first limiting assembly comprises an outer side first baffle layer, an outer side vibration absorption layer and an outer side second baffle layer which are sequentially arranged from outside to inside; the second limiting assembly comprises an inner side first baffle layer, an inner side vibration absorption layer and an inner side sliding layer which are sequentially arranged from inside to outside, the outer side second baffle layer is arranged opposite to the inner side sliding layer, and a gap is formed between the outer side second baffle layer and the inner side sliding layer; one end of the outer first baffle layer, which is far away from the second horizontal shock insulation mechanism, is connected with the top plate of the fixing mechanism; one end of the inner first baffle layer, which is far away from the fixing mechanism, is connected with a bottom plate of the second horizontal shock insulation mechanism;
preferably, a plurality of outer stiffening plates are arranged on the periphery of the outer first baffle layer, the outer stiffening plates are perpendicular to the outer first baffle layer, and the outer stiffening plates are located on a top plate of the fixing mechanism; the inner periphery of the inner side first baffle layer is provided with a plurality of inner side stiffening plates, and the inner side stiffening plates are perpendicular to the inner side first baffle layer.
Preferably, the second horizontal shock isolation mechanism is a shaped friction pendulum shock absorption support; a friction pendulum support base plate of the second horizontal vibration isolation mechanism is connected with the top of the vertical vibration isolation mechanism; and a friction pendulum support top plate of the second horizontal shock insulation mechanism is connected with a lower building structure.
Preferably, a rubber dust cover is arranged on the periphery of the first horizontal vibration isolation mechanism.
Preferably, the fixing mechanism includes: the upper connecting plate and the lower connecting plate are arranged in parallel at intervals; the upper connecting plate and the lower connecting plate are connected through a middle vertical rib plate; the first horizontal shock isolation mechanism, the second horizontal shock isolation mechanism and the vertical shock isolation mechanism are connected with the lower building structure through the fixing mechanism.
In a second aspect, the invention provides a method for vertical vibration isolation and horizontal vibration isolation for buildings, which is characterized in that the device for vertical vibration isolation and horizontal vibration isolation based on the additional damper of the friction pendulum is adopted between an upper building structure and a lower building structure; the vibration in the vertical direction is reduced through a vertical vibration isolation mechanism, the vibration isolation part comprises a plurality of springs and a plurality of dampers, and the dampers reduce the vibration amplitude of the springs; the horizontal vibration isolation mechanism reduces the vibration in the horizontal direction and limits the horizontal deformation of the vertical vibration isolation mechanism.
By adopting the technical scheme, the invention has the following beneficial effects:
the vertical vibration isolation mechanism is used for reducing the vibration in the vertical direction; the horizontal shock insulation mechanism is used for reducing the shock in the horizontal direction and limiting the horizontal deformation of the vertical shock insulation mechanism, so that the device based on the vertical shock insulation and horizontal shock insulation of the friction pendulum additional damper is used for a building structure, the vibration in the vertical direction can be isolated, and the seismic action in the horizontal direction can be isolated.
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 some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural diagram of a vertical vibration isolation and horizontal vibration isolation device based on a friction pendulum additional damper provided by the invention.
FIG. 2 is a schematic cross-sectional view of the vertical vibration isolation and horizontal vibration isolation device based on the additional damper of the friction pendulum provided by the invention.
Fig. 3 is a schematic structural view of a first horizontal seismic isolation mechanism provided by the present invention.
FIG. 4 is an exploded schematic view of the vertical vibration isolation and horizontal vibration isolation device based on the additional damper of the friction pendulum provided by the invention.
FIG. 5 is a schematic diagram of the vertical vibration isolation and horizontal vibration isolation device based on the additional damper of the friction pendulum, which is provided by the invention, when the device is deformed horizontally.
Fig. 6 is a schematic view of the vertical vibration isolation mechanism provided by the present invention, both front and rear, being loaded.
Icon: 10-shaping the friction pendulum damping support; 20-vertical vibration isolation mechanisms; 30-a fixing mechanism; 102-an upper building structure; 101-friction pendulum support base plate; 103 rubbing the pendulum support top plate; 201-a spring; 202-a connecting sleeve; 203-an inner first barrier layer; 204-inner side vibration absorbing layer; 205-medial glide layer; 206-outer second baffle layer; 207-outer vibration absorbing layer; 208-outer first baffle layer; 209- -rubber dust cover; 401-outer stiffener; 402-inside stiffening plate; 403-a damper; 301-upper connection plate; 302-lower connecting plate; 303-vertical rib plates; 304-lower building structure.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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.
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
Example one
Referring to fig. 1 to 6, the present embodiment provides a vertical vibration isolation and horizontal vibration isolation device based on a friction pendulum additional damper, which includes a horizontal vibration isolation mechanism, a vertical vibration isolation mechanism 20, and a fixing mechanism 30; the horizontal shock insulation mechanism comprises a first horizontal shock insulation mechanism and a second horizontal shock insulation mechanism; the first horizontal shock isolation mechanism is connected between the fixing mechanism 30 and the second horizontal shock isolation mechanism; the vertical vibration isolation mechanism 20 is connected between the fixing mechanism 30 and the second horizontal vibration isolation mechanism. Wherein, the vertical vibration isolation mechanism 20 is used for reducing the vibration in the vertical direction; the horizontal vibration isolation mechanism serves to reduce vibration in the horizontal direction and restrict horizontal deformation of the vertical vibration isolation mechanism 20. Therefore, the device based on the vertical vibration isolation and horizontal shock isolation of the friction pendulum additional damper is used for a building structure, so that the vibration in the vertical direction can be reduced, the seismic action in the horizontal direction can be reduced, and the building is safe and comfortable.
In this embodiment, the vertical vibration isolation mechanism 20 includes: a vibration isolation part; the vibration isolation part comprises a plurality of springs 201 and a plurality of dampers 403; a plurality of springs 201 and a plurality of dampers 403 are arranged between the top plate of the fixing mechanism 30 and the bottom plate of the second horizontal seismic isolation mechanism; two ends of the springs 201 and the dampers 403 are fixedly connected with the top plate of the fixing mechanism 30 and the bottom plate of the second horizontal seismic isolation mechanism.
The size and number of springs 201 may be determined based on the weight of the building, the spectral characteristics of the rail traffic vertical excitation, the vertical vibration isolation objectives. The spring 201 may be a steel spring 201. After the spring 201 is arranged, the vertical rigidity of the building is reduced, the vertical vibration period of the building is prolonged, the frequency of vertical vibration generated by rail transit is staggered, high-frequency vibration is isolated, and the purpose of vertical vibration reduction is achieved.
The specification and the number of the dampers 403 can be determined according to the specification characteristics of the spring 201, the frequency spectrum characteristics of vertical excitation of rail transit and a vertical vibration isolation target, the dampers can be viscous dampers or other types of dampers, the dampers only provide additional damping but do not provide vertical stiffness, the dampers 403 can reduce the vibration amplitude of the spring 201, reduce the vibration time of the spring 201, effectively avoid resonance, and well play a role in energy consumption.
Preferably, the spring 201 comprises: a plurality of first springs and a plurality of second springs; the first spring is sleeved on the connecting sleeve 202; the first springs and the second springs are connected between the top plate of the fixing mechanism 30 and the bottom plate of the second horizontal shock-isolation mechanism. Preferably, the connection sleeve 202 comprises: the device comprises a cylinder body and a sliding rod which is arranged in the cylinder body and can move in a reciprocating manner; the bottom of the cylinder is connected with the top plate of the fixing mechanism 30; the top of the sliding rod is connected with a bottom plate of the second horizontal shock insulation mechanism; the first spring is arranged on the periphery of the cylinder.
The top plate of the fixing mechanism 30 is a plate-shaped structure and is parallel to the friction pendulum support base plate 101 of the second horizontal seismic isolation mechanism, the plurality of springs 201 are arranged between the friction pendulum support base plate 101 and the top plate of the fixing mechanism 30, and the axes of the springs 201 and the dampers 403 are perpendicular to the friction pendulum support base plate 101 and the top plate of the fixing mechanism 30. The springs 201 and the dampers 403 are sequentially arranged to form five rows and five columns, or other rows and columns can be formed according to actual needs, the adjacent springs 201 and the dampers 403 in each row or each column are arranged at equal intervals, the spring 201 close to the inner side first baffle layer 203 is a first spring 2011, the first springs 2011 form a rectangle, the first springs 2011 positioned at four vertexes and midpoints of four sides of the rectangle are sleeved on the connecting sleeve 202, the inner wall and the outer wall of the connecting sleeve 202 can freely slide, the upper end of the connecting sleeve is welded with the friction pendulum bottom plate 101, and the lower end of the connecting sleeve 202 is connected with the top plate 301 of the fixing mechanism. An inner stiffener 402 is disposed between adjacent first springs 2011.
Before the device is installed, the spring 201 is fixed through the connecting sleeve 202, the connecting sleeve is connected with the bottom plate 101 of the friction pendulum support and the top plate of the fixing mechanism 30, the deformation of the spring 201 is limited within a certain range, after the device is installed and the construction of the upper building is completed, the spring 201 is gradually pressed to a bearing state, the connecting sleeve 202 is free from vertical load, the inner wall and the outer wall are in a free sliding state, and the influence of the connecting sleeve 202 on the vertical vibration reduction of the spring 201 is avoided.
When vertical vibration occurs, the plurality of springs 201 are used for telescopic vibration damping, so that the influence of vibration in the vertical direction on a building is isolated, and the vertical rigidity and the bearing capacity of the device are mainly determined by the high-bearing springs 201.
In this embodiment, preferably, the first horizontal seismic isolation mechanism includes a first limit component and a second limit component, and the first limit component is disposed around the second limit component; the second limiting assembly is arranged around the vibration isolation part; the first limiting assembly is arranged on the top plate of the fixing mechanism 30; the second limiting assembly is arranged on a bottom plate of the second horizontal shock isolation mechanism.
Preferably, the first limiting component comprises an outer first baffle layer 208, an outer shock absorption layer 207 and an outer second baffle layer 206 which are arranged from outside to inside in sequence; the second limiting component comprises an inner side first baffle layer 203, an inner side vibration absorption layer 204 and an inner side sliding layer 205 which are sequentially arranged from inside to outside, an outer side second baffle layer 206 and the inner side sliding layer 205 are oppositely arranged, and a gap is arranged between the outer side second baffle layer 206 and the inner side sliding layer 205. The width of the gap is determined according to the amount of deformation allowed horizontally by the spring 201 and the damper 403.
Preferably, the end of the outer first baffle layer 208 remote from the second horizontal seismic isolation mechanism is connected to the top plate of the fixture 30; the end of the inner first baffle layer 203 away from the fixing mechanism 30 is connected with the bottom plate of the second horizontal vibration isolation mechanism.
Preferably, a plurality of outer stiffening plates 401 are arranged on the periphery of the outer first baffle layer 208, the outer stiffening plates 401 are perpendicular to the outer first baffle layer 208, and the outer stiffening plates 401 are located on the top plate of the fixing mechanism 30; a plurality of inner stiffener plates 402 are disposed on the inner circumference of the inner first baffle layer 203, and the inner stiffener plates 402 are disposed perpendicular to the inner first baffle layer 203. The inner side stiffening plate 402 and the outer side stiffening plate 401 respectively reinforce the inner side first baffle layer 203 and the outer side first baffle layer 208, and the horizontal bearing capacity and the rigidity of the first horizontal shock insulation mechanism are improved. The number of the outer stiffener 401401 may be determined according to actual needs, and the plurality of outer stiffeners 401 may be arranged at equal intervals.
The outer first baffle layer 208, the outer second baffle layer 206 and the inner first baffle layer 203 are all made of stainless steel plates. The inner slip layer 205 is made of a slip material. The outer side vibration-absorbing layer 207 and the inner side vibration-absorbing layer 204 are each formed of a vibration-absorbing material. The vibration absorbing material can be nitrile rubber, butyl rubber, polyurethane elastomer, polyoxyethylene-styrene block copolymer, plasticized polyvinyl chloride, polyvinyl butyral, polymethyl methacrylate, vinyl chloride-vinyl acetate copolymer, polyvinyl chloride blend, semi-interpenetrating network type ethylene-propylene-diene monomer and ethylene-propylene-diene monomer rubber, interpenetrating network type polyisobutyl ether, polymethyl acrylate and the like.
Preferably, the second horizontal shock isolation mechanism is a shaped friction pendulum damping support 10; a friction pendulum support base plate 101 of the second horizontal vibration isolation mechanism is connected with the top of the vertical vibration isolation mechanism 20; the friction pendulum support top plate 103 of the second horizontal seismic isolation mechanism is connected with the lower building structure 304. When the earthquake generates the vibration in the horizontal direction, the shock insulation support deforms, the horizontal vibration period of the building is prolonged, the horizontal earthquake effect is reduced, and horizontal shock insulation is realized.
Preferably, a rubber dust cover 209 is provided on the periphery of the first horizontal seismic isolation mechanism.
Preferably, the fixing mechanism 30 includes: the upper connecting plate 301 and the lower connecting plate 302 and the middle vertical rib plate 303 are arranged in parallel at intervals; the upper connecting plate 301 and the lower connecting plate 302 are connected through a middle vertical rib plate 303; the first horizontal vibration isolation mechanism, the second horizontal vibration isolation mechanism, and the vertical vibration isolation mechanism 20 are connected to the lower building structure 304 via the fixing mechanism 30.
Example two
The second embodiment provides a method for vertical vibration isolation and horizontal vibration isolation for buildings, the second embodiment is another technical scheme of adding a method on the basis of the first embodiment, technical features disclosed by the first embodiment are also applicable to the second embodiment, and technical features disclosed by the first embodiment are not described repeatedly.
The embodiment provides a method for vertical vibration isolation and horizontal vibration isolation for a building, which comprises the following steps:
the device for vertical vibration isolation and horizontal vibration isolation based on the friction pendulum additional damper of the first embodiment is adopted between the upper building structure 102 and the lower building structure 304;
the vibration in the vertical direction is reduced by the vertical vibration isolation mechanism 20;
the horizontal vibration isolation mechanism reduces the vibration in the horizontal direction and restricts the horizontal deformation of the vertical vibration isolation mechanism 20.
When vertical static load of a building and environment have vertical vibration, the transmission path of the vertical force is as follows: the upper building structure 102 → the top plate 103 of the friction pendulum support → the bottom plate 101 of the friction pendulum support → the first baffle layer 203 on the inner side → the inner shock absorbing layer 204 → the inner glide layer 205 → the second baffle layer 206 on the outer side → the outer shock absorbing layer 207 → the first baffle layer 208 on the outer side → the stiffening plate 401 on the outer side → the top plate of the fixing means 30 → the vertical rib → the bottom plate of the fixing means 30 → the lower building structure 304 of the building; thereby achieving relative deformation of the upper building structure 102 and the lower building structure 304 in the horizontal direction and isolating the transmission of horizontal seismic action to the upper building structure 102. The device not only can reduce vertical vibration, but also can ensure that the spring 201 vertically bears, and the horizontal action of the isolated earthquake is transmitted to the upper building structure 102, thereby achieving the purpose of reducing the vertical vibration and the horizontal earthquake action of the upper building structure 102.
Under the action of an earthquake, the spring 201 and the damper 403 are horizontally deformed firstly, when the horizontal deformation of the spring 201 and the damper 403 reaches the gap width, the first horizontal vibration isolation mechanism plays a role in limiting the deformation of the spring 201 and the damper 403, and the transmission path of the horizontal force generated by the earthquake is the inner first baffle layer 203 → the inner vibration absorption layer 204 → the inner sliding layer 2052 → the outer second baffle layer 206 → the outer vibration absorption layer 207 → the outer first baffle layer 208 → the outer stiffening plate 401 → the fixing mechanism top plate 301 → the vertical stiffening rib plate 303 → the fixing mechanism bottom plate 302. The first horizontal shock isolation mechanism limits the horizontal deformation of the spring 201 and the damper 403, ensures the vertical direction of the spring 201 and the bearing energy consumption of the damper 403, and simultaneously realizes the effective transmission of horizontal earthquake force, and simultaneously achieves the purposes of energy absorption and shock absorption due to the arrangement of the inner side shock absorption layer 204 and the outer side shock absorption layer 207, thereby reducing the influence of horizontal direction shock.
By arranging the limiting device between the upper connecting plate 301 and the lower connecting plate 302, horizontal loads such as horizontal earthquake action are directly transmitted through the limiting device, the spring 201 of the spring 201 support does not bear the horizontal loads, horizontal deformation does not occur or a small amount of allowable deformation of the spring 201 occurs, and the problem that a conventional spring 201 vibration isolator cannot bear large horizontal force and is poor in horizontal deformation capacity is solved. Vertical vibration is isolated through the spring 201 with high bearing capacity, the vertical rigidity and the bearing capacity of the support are only determined by the spring 201 with high bearing capacity, and the vertical rigidity and the bearing capacity are not generated by other components. The shaped friction pendulum vibration isolation support is arranged at the top of the support vibration isolation mechanism, so that the horizontal period of the structure is prolonged, the horizontal earthquake effect is reduced, and horizontal vibration isolation is realized.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A vertical vibration isolation and horizontal vibration isolation device based on a friction pendulum additional damper is characterized by comprising a horizontal vibration isolation mechanism, a vertical vibration isolation mechanism and a fixing mechanism;
the horizontal shock insulation mechanism comprises a first horizontal shock insulation mechanism and a second horizontal shock insulation mechanism; the first horizontal shock isolation mechanism is connected between the fixing mechanism and the second horizontal shock isolation mechanism; the vertical vibration isolation mechanism is connected between the fixing mechanism and the second horizontal vibration isolation mechanism;
the vertical vibration isolation mechanism includes: a vibration isolation part; the vibration isolation part comprises a plurality of springs and a plurality of dampers; the springs are arranged between the top plate of the fixing mechanism and the bottom plate of the second horizontal shock insulation mechanism; the plurality of dampers are arranged between the top plate of the fixing mechanism and the bottom plate of the second horizontal shock insulation mechanism.
2. The vertical vibration isolation and horizontal vibration isolation device based on the friction pendulum additional damper as claimed in claim 1, wherein the spring comprises: a plurality of first springs and a plurality of second springs;
the first spring is sleeved on the connecting sleeve;
the dampers, the first springs and the second springs are distributed between the top plate of the fixing mechanism and the bottom plate of the second horizontal shock isolation mechanism in a matrix mode.
3. The vertical vibration isolation and horizontal vibration isolation device based on the friction pendulum additional damper as claimed in claim 2, wherein the connecting sleeve comprises: the device comprises a cylinder body and a sliding rod which is arranged in the cylinder body and can move in a reciprocating manner;
the bottom of the cylinder is connected with a top plate of the fixing mechanism;
the top of the sliding rod is connected with a bottom plate of the second horizontal shock insulation mechanism;
the first spring is arranged on the periphery of the barrel.
4. The vertical vibration isolation and horizontal vibration isolation device based on the friction pendulum additional damper as claimed in claim 3, wherein the first horizontal vibration isolation mechanism comprises a first limit component and a second limit component, and the first limit component is arranged around the second limit component; the second limiting assembly is arranged around the vibration isolation part; the first limiting assembly is arranged on a top plate of the fixing mechanism; the second limiting assembly is arranged on a bottom plate of the second horizontal shock isolation mechanism.
5. The vertical vibration isolation and horizontal vibration isolation device based on the friction pendulum additional damper is characterized in that the first limiting assembly comprises an outer first baffle layer, an outer vibration absorption layer and an outer second baffle layer which are sequentially arranged from outside to inside; the second limiting assembly comprises an inner side first baffle layer, an inner side vibration absorption layer and an inner side sliding layer which are sequentially arranged from inside to outside, the outer side second baffle layer is arranged opposite to the inner side sliding layer, and a gap is formed between the outer side second baffle layer and the inner side sliding layer; one end of the outer first baffle layer, which is far away from the second horizontal shock insulation mechanism, is connected with the top plate of the fixing mechanism; and one end of the first baffle layer at the inner side, which is far away from the fixing mechanism, is connected with the bottom plate of the second horizontal shock insulation mechanism.
6. The vertical vibration isolation and horizontal vibration isolation device based on the friction pendulum additional damper as claimed in claim 5, wherein a plurality of outer stiffening plates are arranged on the periphery of the outer first baffle layer, the outer stiffening plates are arranged perpendicular to the outer first baffle layer, and the outer stiffening plates are positioned on the top plate of the fixing mechanism; the inner periphery of the inner side first baffle layer is provided with a plurality of inner side stiffening plates, and the inner side stiffening plates are perpendicular to the inner side first baffle layer.
7. The vertical vibration isolation and horizontal vibration isolation device based on the additional damper of the friction pendulum as claimed in claim 1, wherein the second horizontal vibration isolation mechanism is a shaped friction pendulum damping support;
a friction pendulum support base plate of the second horizontal vibration isolation mechanism is connected with the top of the vertical vibration isolation mechanism;
and a friction pendulum support top plate of the second horizontal shock insulation mechanism is connected with a lower building structure.
8. The vertical vibration isolation and horizontal vibration isolation device based on the friction pendulum additional damper is characterized in that a rubber dust cover is arranged on the periphery of the first horizontal vibration isolation mechanism.
9. The vertical vibration isolation and horizontal vibration isolation device based on the friction pendulum additional damper as claimed in claim 1, wherein the fixing mechanism comprises: an upper connecting plate, a lower connecting plate and a middle vertical ribbed plate,
the upper connecting plate and the lower connecting plate are arranged in parallel at intervals;
the upper connecting plate and the lower connecting plate are connected through a middle vertical rib plate;
the first horizontal shock isolation mechanism, the second horizontal shock isolation mechanism and the vertical shock isolation mechanism are connected with the lower building structure through the fixing mechanism.
10. A method for vertical vibration isolation and horizontal vibration isolation for buildings is characterized in that,
a device for vertical vibration isolation and horizontal vibration isolation between an upper building structure and a lower building structure based on a friction pendulum additional damper as claimed in any one of claims 1 to 9;
the vibration in the vertical direction is reduced through a vertical vibration isolation mechanism, the vibration isolation part comprises a plurality of springs and a plurality of dampers, and the dampers reduce the vibration amplitude of the springs;
the horizontal vibration isolation mechanism reduces the vibration in the horizontal direction and limits the horizontal deformation of the vertical vibration isolation mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111453389.1A CN114197935A (en) | 2021-12-01 | 2021-12-01 | Device and method for vertical vibration isolation and horizontal vibration isolation based on friction pendulum additional damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111453389.1A CN114197935A (en) | 2021-12-01 | 2021-12-01 | Device and method for vertical vibration isolation and horizontal vibration isolation based on friction pendulum additional damper |
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| Publication Number | Publication Date |
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| CN114197935A true CN114197935A (en) | 2022-03-18 |
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|---|---|---|---|
| CN202111453389.1A Pending CN114197935A (en) | 2021-12-01 | 2021-12-01 | Device and method for vertical vibration isolation and horizontal vibration isolation based on friction pendulum additional damper |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114991332A (en) * | 2022-06-02 | 2022-09-02 | 北京市科学技术研究院城市安全与环境科学研究所 | Vibration and shock double-control three-dimensional vibration isolation combined supporting member with negative Poisson ratio effect |
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2021
- 2021-12-01 CN CN202111453389.1A patent/CN114197935A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114991332A (en) * | 2022-06-02 | 2022-09-02 | 北京市科学技术研究院城市安全与环境科学研究所 | Vibration and shock double-control three-dimensional vibration isolation combined supporting member with negative Poisson ratio effect |
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