CN103946468A - Seismic dissipation module made up of compression-resistant spheres immersed in a variable low density material - Google Patents

Seismic dissipation module made up of compression-resistant spheres immersed in a variable low density material Download PDF

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Publication number
CN103946468A
CN103946468A CN201280057154.3A CN201280057154A CN103946468A CN 103946468 A CN103946468 A CN 103946468A CN 201280057154 A CN201280057154 A CN 201280057154A CN 103946468 A CN103946468 A CN 103946468A
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spheroid
earthquake
ground
module
building
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G·真蒂利
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
    • E04H9/02Buildings, 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
    • E04H9/021Bearing, supporting or connecting constructions specially adapted for such buildings
    • E04H9/023Bearing, supporting or connecting constructions specially adapted for such buildings and comprising rolling elements, e.g. balls, pins
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
    • E04H9/02Buildings, 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
    • E04H9/021Bearing, supporting or connecting constructions specially adapted for such buildings
    • E04H9/0215Bearing, supporting or connecting constructions specially adapted for such buildings involving active or passive dynamic mass damping systems

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

Abstract

The present invention concerns the industry for making seismic isolators, namely devices used for isolating the load-bearing structure of buildings from the effects of an earthquake and consists of a seismic dissipation and isolation panel or module (1) made up of compression-resistant spheres (2), made of sintered alumina, bound by variable low density substances, polyurethane foams or polystyrene or other similar material (3), to be used in new buildings by placing it between a reinforced concrete bed (4) to be made on the ground (5) and the foundation structures (6) of the building (7), so that, in the event of an earthquake, there can be movements of the building independent from those of the ground on which it is built, so absorbing and isolating the seismic wave and therefore reducing the effects on the structures until, in theory, they cancel them.

Description

The earthquake dissipation module of being made by the compression resistant spheroid being immersed in variable low density material
Technical field
The present invention relates to manufacture seismic isolation apparatus, , for the load-carrying members isolation of building being avoided to the industry of the device of earthquake effect, it comprises earthquake dissipation division board or module, its withstand voltage ball of being made up of the alumina of sintering is by variable low density material, polyurethane foam, polystyrene or other analog material are bonding and form, be placed on and treat between the steel concrete bed built on the ground and the foundation structure of building and for new building, so that in the situation that there is earthquake, the movement of building has nothing to do with the movement on the ground of building it, thereby absorption and isolator seismic wave, therefore reduce the impact that these structures are subject to, until eliminate the effects of the act theoretically.
Background technology
Earthquake be the reason that causes concrete and the sizable infringement of brick construction, and there is the well-known consequence for many people's life.Building is fixed by various types of grounds and ground, therefore they can be because seismic wave conducts to ground by ground, and then make to be affected on whole building, therefore produce stress, this stress causes the sizable pressure that acts on architecture quality, by structure and the metal reinforcing bar of laying large as far as possible these power of opposing, it is compensated.
In order to deal with due to the sound response uncertain and structure while guaranteeing earthquake occurs of determining that the uncertainty of structural modeling parameter (structural modeling parameters) produces, must take following certain measures, thereby guarantee structural considerations and the building extension characteristics of structure as a whole.
In the time there is earthquake, the base portion of the building of isolation can move with respect to ground along continuous straight runs, and therefore, after movement, if remaining movement is not very little amount for building, this building is necessary to get back to home position.For this reason, the base portion of building must have suitable relocation system (re-centre system), is also referred to as servicing unit, and its function is for system described in dissipation energy and/or reorientation and/or provide the side of structure to limit.
Can reorientation structure and the device of the energy that also can dissipate can comprise hydraulic means, or the device of particular mechanical properties based on marmem (SMA).These materials are different from the material of other type, are conventionally made up of Nitinol, have the ability of " memory " original-shape.
Conventionally, as the result of geological process, the movement that isolation structure experiences must be in the number range that can tolerate, with the size of subsumption architecture connector and can not cause that the connection of device/system goes wrong.For isolation structure, in fact should expect that all device/system are from ground level flexible joint to top structure.
Foundation structure must resist come from ground and upper structure thereof response produce impact, and can not produce with reference to the conflicting permanent movement of extremity.
Building must have structural systems to ensure rigidity and the resistance for two vertical-horizontal components of geological process.
Ground based system must have the rigidity and the sufficient bending rigidity that extend at the height of horizontal plane.
The structural member of ground must be carried out sizing size by the pressure based on be passed to them from top structure, must have non-dissipation performance, and have nothing to do in the structural performance of the structure that it is exerted pressure.
By insert spacer assembly between ground and superstructure, the frequency of earthquake and the frequency of superstructure are not coupled, and will prevent the generation of covibration.
Once generation earthquake stress, the insertion of spacer assembly allows the suitable vibration period of structure to increase, so that it moves away from having compared with the region of the response spectrum of high acceleration.
This structure has produced dynamically the de-connecting of the relative ground of building (" filtration " effect) effectively, to reduce the transmission of energy of the structure upward being produced by geological process.As the final result of this situation, ground-spacer assembly-structural system can be dissipated in the seismic energy on ground, and this dissipation almost concentrates on spacer assembly specially, under the loss of large plastic strain, by wider hysteresis cycle, dissipate and be passed to their seismic energy from ground.This allows top structure to keep almost motionless by the motion with respect to ground, in fact there is reaction at elastic range, this has changed the input of earthquake significantly, because, be passed to the acceleration of building by reduction, structure has obtained significant raising for the respond of the extremity of final collapse intensity and infringement.
Except protection load-carrying members, these devices also allow non-structure division and all parts that it comprises to protect.In fact, as the result of the landing deformations (drift) almost complete absence of middle, this technology allows to prevent destruction or the infringement for the article in filler, partition wall, device/system or building, such as museum or library, data machining center etc.It makes earthquake that the infringement of structure generation is down to minimum or is eliminated completely, even if there is serious seismic events, also can keep the activity carried out constant therein.
Between earthquake period, the effect of isolation structure is as rigid bodies, and it is static that its vibration compared to ground keeps.
Use seismic isolation apparatus, even if its structure design is to be also held in elastic range in the most violent earthquake, and gives this structure by its ductility and keep complete energy dissipation ability.
At present, in earthquake engineering field, have three kinds of spacer assemblys, and every kind of spacer assembly there are again all kinds.
the spacer assembly of being made by elastomeric material and steelalternately made by multilayer elastomeric material (natural rubber or suitable artificial material) and steel plate, there is the elastomeric function of superior restriction, and this design can by be parallel to multilayer position effect and perpendicular to the vertical load of the effect of multilayer, horizontal force and distortion that opposing is demarcated.
They are generally circular design, also can be made into square or rectangular cross section.Their feature is horizontal rigidity, higher vertical stiffness and the suitable dissipation capability reducing.
elastoplasticity spacer assemblybe made up of element, described element keeps elasticity in the time only having vertical load, plastification in the time of the horizontal force having higher than setting threshold.
Due to their high dissipation capability, the effect of elastoplasticity spacer assembly is to limit the transmission of pressure to lower structures, ensures the good reaction of whole building for seismic events with this.
slip spacer assembly or rolling spacer assemblybe made up of steel support member and teflon support and the support member on roller or spheroid respectively, their feature is has low friction resistance value.Therefore, although for elastoplasticity spacer assembly and those spacer assemblys of being made by elastomeric material and steel, the damping relatively moving that need to keep two isolation structures is that the stronger hysteresis characteristic of the material by forming them is guaranteed, but for slip spacer assembly and rolling spacer assembly, be necessary parallel suitable energy dissipator placement.
Because sliding process is nonlinear in essence, therefore the dynamic characteristic of the spacer assembly of these types is complicated.
Some dissipator, is referred to as viscoplasticity dissipator, utilizes material as the viscosity of plastics, mineral oil and organic siliconresin.Other dissipator, is referred to as the loose energy of elastoplasticity device, utilizes the plasticizing of metal material, with the energy that dissipates in hysteresis cycle.Finally, the friction between the metal surface that the process that the utilization of so-called friction dissipator is slided mutually is suitably processed.
Except elastic body (rubber) and thermoplastic polymer (polytetrafluoroethylene (PTFE)) aging, be used for the physicochemical property of the bonding agent of bonding steel plate and rubber, and those are for the straight chain organosilicon polymer (organo-silicic oil and lubricating grease) of viscoplasticity dissipator (can be arranged in parallel with slip spacer assembly or rolling spacer assembly), are also very important with regard to the object of durability.
In addition; elastoplasticity spacer assembly and those spacer assemblys of being made by elastomeric material and steel; the in the situation that of breaking out of fire, especially easily sustain damage; therefore must suitably protect in order to avoid suffer this possibility, if or used together with their the damaged equipment that can replace them.
In the prior art, also there is the antidetonation marble pedestal of the Riace bronze statue (Bronz di Riace) of ENEA.
The seismic isolation apparatus gang that the protection that these belong to by ENEA is precision instrument is developed.These are all the earthquake protection devices of passive and/or semi-passive Noninvasive; made by two blocks of overlapping marbles of inner surface; described two pieces arrange the cavity of four bowls in minute surface mode; its geometry is ellipse of revolution shape; four marble spheroids are placed in one; by their rolling, provide seismic isolation and maximize desired large movement, the requirement of low rigidity and low friction.
In the time having earthquake to occur, the part below pedestal will stand geological process, because the movement that they are positioned at the spheroid in the hollow cavity in marble absorbs completely, this can move and not transmit stresses to top together with ground.It is not very large that the motion of spheroid makes protection system rigidity under low-down friction, is characterized in, reduces to greatest extent the pressure that earthquake brings or makes them almost nil.New antidetonation marble pedestal is particularly suitable for the statue of the vertically structure (developed) with a very little pedestal, therefore be especially easily subject to the impact of horizontal earthquake action, this may jeopardize their balance, and causes their overturnings.
Due to the properties of materials for the manufacture of this device, such seismic isolation apparatus can not be used for house and apartment, if use it for larger area, aspect raw material and installation, can become very expensive, therefore these antidetonation pedestals with marble ball are only for the art work for limited.
Earthquake dissipator or spacer assembly dissimilar on market are very expensive, and need height professional technique to manufacture, and even their installation can not have been operated by common building constructor.
Rolling machine formula spacer assembly described in " MICALI " patent that is 1146596 in the patent No. is made up of steel or other suitable rigid material completely, each spacer assembly is made up of recessed of a pair of circle with spheroid, and the diameter that described spheroid inserts is not less than the height sum of two depressions.According to this patent, by arrange recessed in two steel concrete beds or net structure, one in wherein said two steel concrete beds or net structure is directly positioned on ground, and another is placed on spheroid.Only have lower bed or net structure to be subject to the impact of the horizontal earthquake motion on ground, and higher steel concrete bed or net structure are due to the rolling of its lower face ball, can follow the static inertia of building and almost keep motionless, this is because move with respect to the higher moment of recessed being arranged at wherein due to lower recessed, and it only stands brief traversing upwards.
Owing to thering is relevant recessed the roll little contact of seat and large quantity or large-sized needs subsequently, the compressive resistance that is limited in spheroid of these rolling machine formula spacer assemblys.International Application No. WO 99/07966 discloses a kind of friction ball, by the homogeneous material (lead, aluminium, brass, iron, steel etc.) of plastically deformable or be made up of elastomeric material, in the time that its supports weight, deforms; The frictional force that above-mentioned distortion produces can stop the rolling movement of shape-changeable ball.
Being limited in of these friction balls prepared the expensive expense of its material and for resistance, passes in time, and durability is low.
Summary of the invention
An object of the present invention is to make the raw material that form seismic isolation apparatus to be easy to find on market, there is the lower cost feature that but possesses skills.Aspect density and intensity, allow, in the situation that there is Repeating earthquakes, each event is had to identical response.And because parts do not need to change, also do not relate to maintenance cost.In addition,, due to the quality of the aggregation of the alumina balls of sintering, this spacer assembly also forms good insulation for the moisture rising.
Another object of the present invention is to make seismic isolation apparatus can bear multi-directional Earthquake input, like this, in the situation that there is earthquake, the movement of building has nothing to do with the movement on the ground of building it, thereby to absorb and seismic wave isolator, and therefore reduce the impact on structure, until theoretically they are eliminated.
A further object of the present invention is to make seismic isolation apparatus can avoid the seismic forces bringing out to building transmission, thereby physical dimension is reduced, and safeguards the function of building simultaneously.
The object of these and other is present in the present invention, it relates to for the panel of new building or module, be arranged on and wait to be built between ground steel concrete bed and the foundation structure of building, such as for example reinforced concrete beam or ground bedding, make in the situation that there is earthquake, the movement of building can have nothing to do with the movement on the ground of building it, thus absorption and isolator seismic wave, and therefore reduce the impact on structure, until theoretically they are eliminated.
Brief description of the drawings
Other features and advantages of the present invention by preferably but be not that exclusive product embodiments describes and more obvious, describe non-limiting embodiment below in conjunction with accompanying drawing:
Fig. 1 represents the precast plate be made up of spheroid 2 or plan view and the sectional drawing of module 1, between described spheroid, there is default centre distance, they change (a single point that load acts on spheroid) according to a load, wish that the alumina by sintering is carried out to the bonding spheroid of making by variable materials of low density, polyurethane foam, polystyrene or other similar material 3 to be supported.
Fig. 2 is the sectional drawing of following structure:
By the alumina of sintering is made and the spheroid 2 that bonds by variable materials of low density, polyurethane foam, polystyrene or other similar material 3 is made precast plate or module 1;
Be placed on ground 5 and be combined in the steel concrete bed 4 of the ground on top by isolating interface, described " isolating interface " refers to the release surface of shielding system work;
Reinforced concrete post or ground bedding 6;
There is the building 7 of pillar 8.
Fig. 3 and Fig. 4 represent the optional embodiment of precast plate or module 1, wherein:
Fig. 3 represents the precast plate be made up of spheroid 2 or plan view and the sectional drawing of module 1, its mobility is defined in border circular areas 9, and between described spheroid, there is default centre distance, they change (a single point that load acts on spheroid) according to a load, wish that the alumina by sintering is carried out to the bonding spheroid of making by variable materials of low density, polyurethane foam, polystyrene or other similar material 3 to be supported;
Fig. 4 is the sectional drawing of following structure:
Alumina by sintering is made, is had in the ability of localized area 9 interior movements and by variable materials of low density, polyurethane foam, polystyrene or other similar material 3 and carry out precast plate or the module 1 that bonding spheroid 2 is made;
Be placed on ground 5 and be combined in the steel concrete bed 4 of the ground on top by isolating interface, described " isolating interface " refers to the release surface of shielding system work;
Reinforced concrete post or ground bedding 6;
There is the building 7 of pillar 8.
Detailed description of the invention
In the following description, will use following term, wherein provide as given a definition:
-" substructure " or " the first ground ", be positioned at below the interface of shielding system, comprises ground, conventionally has insignificant horizontal distortion, and directly stand the move structure division of the action applying of surface seismic;
-" top structure " or " the second ground ", be positioned at the part of the above structure of isolating interface, thereby be isolated.
Described concrete solidify initial 28 days, polyurethane, polystyrene or other similar material 3 of Prefabricated block 1 are for supporting the concrete casting of top structure.
The alumina of manufacturing the sintering of the spheroid 2 of Prefabricated block 1 is a kind of ceramic materials, the sintering that described ceramic materials passes through alumina---a kind of material being present in bauxite---obtains, and by hot-working and machining, dusty material is reverted to the compact block of designated shape; It combines the advantage of aluminium alloys and powder metallurgy.
The feature of the alumina spheroid of sintering is: higher hardness and compressive resistance, and therefore there is high opposing for axial load.Laboratory test shows, the alumina spheroid of sintering, and 5 centimetres of diameters, stand 9000 kilograms of vertical axial load, do not show any plasticity effect on its contact surface.
The advantage of aluminium alloys is:
-low-gravity (approximately 2.7 grams/cc);
-good corrosion resistance;
-remarkable mechanical performance;
-good abrasion resistance;
-good fatigue durability;
The advantage of powder metallurgy is:
-cost of production is low;
-good allowance control, without subsequent technique;
-obtain the possibility of complicated shape with limited cost.
The thickness of precast plate or module 1 equals the diameter (for example: 3-5-8 centimetre etc.) of ball 2, has the variable surface area (for example: 3.00x1.50 rice etc.) that is suitable for transport, or lower than standard size.
The installation of these precast plates or module 1 is envisioned for, and they is in contact with one another and is placed on horizontal plane, between the first ground and the second ground.
The suitable additive that the alumina spheroid 2 of sintering should can be purchased by market, as silicone release covers, to guarantee that this polyurethane or polystyrene or other similar material 3 do not contact with spheroid 2 because make to be like this independent of around they binding material 3 and the structure made be rotated and become possibility.
In the situation that there is earthquake, the possibility of the multiple-directional rotating of spheroid 2 absorbs and isolates the horizontal hunting motion on ground 5, and can not transmit stresses to the top structure of building 7.Wherein, due to inertia, tend to keep original position, therefore reduced the impact of known disaster.
The binding material 3 of the alumina spheroid 2 of sintering allows its controlled rotation with low and variable density.Prefabricated module 1 does not deform between earthquake period, and this is because the alumina spheroid 2 of this sintering has higher compressive resistance, and there is no plasticity effect; Therefore,, owing to thering is the effect of dissipation-isolation, even response is also identical during ensuing seismic shock, and do not need to change the assembly of template 1.
For ground based system 6, the two can be used the concrete RcK30 of regular tenacity interior interval (intradosal) system of described spacer assembly and outer interval (extradosal) system, and due to the alumina spheroid 2 of the sintering of spacer assembly, can on concrete, not produce plasticity effect (testing) with common load in laboratory.For the specific load on ground 6, the ground base concrete of proper strength will be used.
Under specific circumstances, the centre distance between the alumina spheroid 2 of sintering can be suitable for the requirement of above-mentioned weight and change, to optimize the some load on spheroid 2.
According to dissipating and the precast plate of isolation or another embodiment of module 1 for earthquake, the shape of the adhesives 3 of the alumina spheroid 2 of described sintering is performed as follows setting: the interior movement of border circular areas 9 that each spheroid 2 must limit, described border circular areas has defined its possibility moving, and in the same way, allow its controlled rotation.
Above-mentioned material of the present invention and the size illustrating in the accompanying drawings and enclose in claims can change as required.In addition, all details all can be replaced by other technical equivalences, and can therefore not depart from the protection domain of patent application of the present invention.

Claims (4)

1. an earthquake dissipation module, for the load-carrying members isolation of building is avoided to earthquake effect, comprise: precast plate or module (1), described precast plate or module (1) are for being installed between the steel concrete bed (4) and the foundation structure (6) of building (7) on ground to be built in (5), wherein said precast plate or module (1) are made up of compression resistant spheroid (2), described spheroid is placed in precast plate or module (1), between described spheroid, there is default centre distance, described precast plate or module (1) are characterised in that: described compression resistant spheroid (2) is made up of the alumina of sintering and by variable materials of low density, polyurethane foam, polystyrene or other similar material (3) are bonding.
2. earthquake dissipation module according to claim 1, the alumina spheroid (2) of described sintering is characterised in that by additive suitable on market and covers as silicone release.
3. earthquake dissipation module according to claim 1, is characterized in that, the thickness of described precast plate or module (1) is identical with the diameter of the alumina spheroid (2) of sintering, has the variable surface area that is suitable for transport.
4. earthquake dissipation module according to claim 1, described variable materials of low density bonding the alumina spheroid (2) of sintering, polyurethane foam, polystyrene or other similar material (3) are characterised in that, being shaped as of they must be moved the alumina spheroid (2) of each sintering in the border circular areas (9) limiting.
CN201280057154.3A 2011-11-21 2012-11-19 Seismic dissipation module made up of compression-resistant spheres immersed in a variable low density material Pending CN103946468A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IT000066A ITMC20110066A1 (en) 2011-11-21 2011-11-21 MODULE FOR SEISMIC DISSIPATION CONSISTING OF SPHERES RESISTANT TO COMPRESSION IMMERSED IN A VARIABLE LOW DENSITY MATERIAL.
ITMC2011A000066 2011-11-21
PCT/EP2012/004798 WO2013075814A1 (en) 2011-11-21 2012-11-19 Seismic dissipation module made up of compression-resistant spheres immersed in a variable low density material

Publications (1)

Publication Number Publication Date
CN103946468A true CN103946468A (en) 2014-07-23

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US (1) US20140345210A1 (en)
EP (1) EP2783057B1 (en)
JP (1) JP2014533783A (en)
CN (1) CN103946468A (en)
CA (1) CA2856108A1 (en)
CL (1) CL2014001320A1 (en)
IT (1) ITMC20110066A1 (en)
MX (1) MX2014005823A (en)
WO (1) WO2013075814A1 (en)

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WO2013075814A1 (en) 2013-05-30
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