WO2015069518A1 - Polygonal seismic isolation systems - Google Patents
Polygonal seismic isolation systems Download PDFInfo
- Publication number
- WO2015069518A1 WO2015069518A1 PCT/US2014/062916 US2014062916W WO2015069518A1 WO 2015069518 A1 WO2015069518 A1 WO 2015069518A1 US 2014062916 W US2014062916 W US 2014062916W WO 2015069518 A1 WO2015069518 A1 WO 2015069518A1
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- WIPO (PCT)
- Prior art keywords
- isolation
- bearing
- component
- bearing plate
- platform
- Prior art date
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Classifications
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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
- E04H9/023—Bearing, supporting or connecting constructions specially adapted for such buildings and comprising rolling elements, e.g. balls, pins
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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
- 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
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/02—Flooring or floor layers composed of a number of similar elements
- E04F15/024—Sectional false floors, e.g. computer floors
- E04F15/02447—Supporting structures
- E04F15/02452—Details of junctions between the supporting structures and the panels or a panel-supporting framework
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/02—Flooring or floor layers composed of a number of similar elements
- E04F15/024—Sectional false floors, e.g. computer floors
- E04F15/02447—Supporting structures
- E04F15/02494—Supporting structures with a plurality of base plates or like, each base plate having a plurality of pedestals upstanding therefrom to receive the floor panels
Definitions
- the objects or payload articles are made strong enough to withstand the largest anticipated earthquake.
- this method in addition to the relative unpredictability of damage caused by tremors of high magnitude and long duration and of the directionality of shaking, use of this method alone can be quite expensive and is not necessarily suitable for payloads to be housed within a structure. Particularly for delicate, sensitive or easily damaged payload, this approach alone is not especially useful.
- the objects are isolated from the vibration such that the objects fail to experience the full force and acceleration of the seismic shock waves.
- Various methods have been proposed for accomplishing isolation or energy dissipation of a structure or object from seismic tremors, and these methods may depend in some measure on the nature of the object to be isolated.
- buildings and other structures may be isolated using, for example, passive systems, active systems, or hybrid systems.
- Such systems may include the use of one or more of a torsional beam device, a lead extrusion device, a flexural beam device, a flexural plate device, and a lead- rubber device; these generally involves the use of
- Active control systems require an energy source and computerized control actuators to operate braces or dampers located throughout the structure to be protected. Such active systems are complex, and require service or routine maintenance .
- isolation platforms or flooring systems may be preferable to such active or deformable devices.
- isolation platforms or flooring systems may be preferable to such active or deformable devices.
- an isolation system may provide a simpler, effective, and less maintenance- intensive
- Isolation systems are designed to decouple the objects to be protected (hereinafter the "payload” ) from damage due to the seismic ground motion.
- Isolators have a variety of designs.
- such systems have generally comprised a combination of some or all of the following features: a sliding plate, a support frame slidably mounted on the plate with low friction elements interposed therebetween, a plurality of springs and/or axial guides disposed horizontally between the support frame and the plate, a floor mounted on the support frame through vertically disposed springs, a number of dampers disposed vertically between the support frame and the floor, and/or a latch means to secure the vertical springs during normal use.
- Certain disadvantages to such pre-existing systems include the fact that it is difficult to establish the minimum acceleration at which the latch means is released; it is difficult to reset the latch means after the floor has been released; it may be difficult to restore the floor to its original position after it has moved in the
- adjustment means for presetting the minimum acceleration required to initiate the isolation effects of the flooring in part by adjusting the length of the springs.
- U.S. Patent No. 4,917,211 discloses a sliding type seismic isolator comprising a friction device having an upper friction plate and a lower friction plate, the friction plates having a characteristic of Coulomb friction, and horizontally placed springs which reduce a relative displacement and a residual displacement to under a desired value.
- the upper friction plate comprises a material impregnated with oil, while a lower friction plate comprises a hard chromium or nickel plate.
- Stahl discloses a seismic isolator for protecting e.g., art objects, instruments, cases or projecting housing comprising a base plate connected to a floor and a frame.
- a moving pivoted lever is connected to a spring in the frame and to the base plate.
- the object is placed on top of the frame. Movement of the foundation and base plate relative to the frame and object causes compression of the lever and extension of the spring, which then exerts a restoring force through a cable anchored to the base plate; initial resistance to inertia is caused due to friction between the base plate and the frame .
- U.S. Pat. No. 4,662,133 describes a floor system for seismic isolation of objects placed thereupon comprising a floor disposed above a foundation, a plurality of support members for supporting the floor in a manner that permits the movement of the floor relative to the foundation in a horizontal direction, and a number of restoring devices comprising springs disposed between the foundation and the floor member.
- the restoring members comprise two pair of slidable members, each pair of slidable members being movable towards and away from each other wherein each pair of slidable members is disposed at right angles from each other in the horizontal plane.
- Stiles et al . U.S. Pat. No. 6,324,795 disclose a seismic isolation system between a floor and a foundation comprising a plurality of ball and socket joints disposed between a floor and a plurality of foundation pads or piers.
- the bearing comprises a movable joint attached to a hardened elastomeric material (or a spring) ; the elastic material is attached on an upper surface of the ball and socket joint and thus sandwiched between the floor and the ball and socket joint; the bearing thus tilts in relation to the floor in response to vertical movement.
- the floor is therefore able to adjust to buckling pressure due to distortion of the ground beneath the foundation piers.
- the device disclosed is not designed to move horizontally in an acceleration-resisting manner .
- Fujimoto, U.S. Pat. No. 5,816,559 discloses a seismic isolation device quite similar to that of Kondo, as well as various other devices including one in which a rolling ball is disposed within the tip of a strut projecting downward from the floor in a manner similar to that of a ball point pen.
- Bakker, U.S. Pat. No. 2,014,643 is drawn to a balance block for buildings comprising opposed inner concave surfaces with a bearing ball positioned between the surfaces to support the weight of a building
- U.S. Patents No. 8,156,696 and 8,511,004 discloses apparatus and methods involving raised access flooring structure for isolation of a payload placed thereupon . Moreno and Hubbard, U.S. Patent No. 8,342,752 disclose isolation bearing restraint devices.
- U.S. Patent No. 5,791,096 discloses a raised floor system.
- Denton, U.S. Patent No. 3,606,704 discloses an elevated floor structure suitable for missile launching installations with vertically compressible spring units to accommodate vertical displacements of the subfloor.
- U.S. Patent No. 4,922,670 is drawn to a raised double flooring structure which is resistant to deformation under load.
- the floor employs columnar leg members that contain a pivot mounting near the floor surface, which permits to floor to disperse a load in response to a side load .
- the present invention is directed in part to an improved seismic isolation system.
- the system may comprise isolation flooring and/or seismic isolation platforms.
- preferred examples of the invention may involve, or may be used in conjunction with, a "low rise" platform or flooring system such as that disclosed in International Patent Application No.
- Isolation bearings and systems such as, without limitation, those disclosed in e.g., U.S. Patents No.
- isolation bearings comprising at least one (and usually two) horizontally extending bearing plate (s) with a first generally concave surface and a second surface.
- a cross- sectional profile through a midline vertical axis of such a bearing plate shows that the generally concave surface comprises a shape, generally symmetrical around a central vertical axis, comprising a substantially conical shape, a substantially spherical shape, or a shape, comprising a linked combination of linear and radial shapes.
- At least one bearing plate supports, or is supported by a rolling ball, such as a ball bearing.
- a rolling ball is between opposing upward- facing and downward- facing isolation bearing plates in such a manner that when a seismic event occurs, horizontal ground movement of the floor or foundation is isolated from the payload supported by the isolation bearings.
- Horizontal ground movement of the lower bearing plate is attenuated by the inertia of the payload mass on the upper bearing plate so that the rolling ball, located at rest in the center of the bearing plates, is free to move out of the center of the lower plate as the plate moves under it in any direction (relative to the lower plate) opposite to the direction of lower plate movement .
- a major advantage to such a bearing is that, since it is substantially equally free to move the same distance in any horizontal direction (i.e., along the x and y axes) given a constant force, the bearing does not require additional means to translate and isolate non-linear forces, or forces having both x and y components, as is necessary with isolation equipment using rollers, springs, skids or the like as the primary means of isolating the payload. Additionally, because of the use of a generally concave, generally symmetrical bearing surface, the bearing is "self-initializing" , with the rolling ball returning to the center of the bearing plate following a seismic tremor, thus restoring the bearing to its initial resting position.
- the present invention is directed to methods and apparatus which involve improved seismic isolation bearings and systems utilizing such seismic isolation bearings, as well as methods of making and using such bearings and systems.
- the present invention involves seismic isolation systems utilizing one or more "rolling ball" isolation bearing comprising a bearing plate having a polygonal shape. That is, the isolation bearing comprises at least one payload-supporting "pan” or bearing plate having a polygonal shape in a plan view comprising a load-bearing surface having a cross-sectional profile comprising a generally conical shape, a generally spherical shape, or a shape, generally symmetrical around a central vertical axis, comprising a linked combination of linear and radial shapes.
- the pan or bearing plate extends horizontally, generally radiating symmetrically about a central point, for example a central apex (or inverted apex) .
- the pan or bearing plate is polygonal in shape when seen in plan view; for example, the plan view of the pan (and/or its frame) may comprise a triangle, a square, a pentagon, a hexagon, a heptagon, an octagon or another polygonal shape.
- the bearing plate may be substantially circular in plan view and surrounded by a polygonal frame.
- the polygonal shape is other than a square; preferably the polygonal shape is other than a triangle.
- each seismic isolation bearing comprised in a seismic flooring or platform system may comprise at least two opposing bearing plates, separated by a rigid ball, such as a metallic ball bearing.
- the rigid balls of two or more such bearings support the payload upon a frame, flooring element, or platform.
- a seismic isolation bearing comprised in a seismic flooring or platform system comprises two bearing plates, separated by a rigid ball, such as a metallic ball bearing; in such arrangements an upper bearing plate may be joined to a frame, flooring element, or platform, while a lower bearing plate may be placed upon or affixed to a floor, foundation, or other similar support surface.
- a lower bearing plate may be oriented "upward” , so that when the system is at rest the rigid ball is nested at a central point on the bearing surface of the lower bearing plate.
- An upper bearing plate may be oriented "downward” , so that when the system is at rest the rigid ball rests within a central point on the bearing surface of the upper bearing plate.
- At least a lower bearing plate comprises a polygonal outline shape in a plan view.
- a polygonal shape particularly preferably (but not necessarily) an octagonal shape, can add to the stability of the seismic isolation system in at least two ways.
- polygonal seismic isolation bearings may be assembled so that straight sides of the upper and/or lower polygonal bearing plates of at least two adjoining upper or lower isolation bearings may be joined or linked together, thereby reinforcing the stability of these bearings during a seismic event.
- a single upper or lower polygonal bearing plate may be joined to more than one adjoining bearing plate and/or to a flooring, frame, or platform element.
- the frame, platform and/or flooring elements and the bearings may thus be linked together into a single
- the polygonal shape facilitates linking the bearing plates to the frame, platform and/or flooring elements.
- a circular isolation bearing plate has only one point (the point of tangency) at which it makes contact with a straight -edged surface.
- the joint between framing, platform, and/or flooring element and the bearing plate is made much more strong and firm when a straight edged segment of the perimeter of the bearing plate (or the bearing plate frame) is joined to a straight segment of such element .
- seismic isolation systems comprising polygonal isolation bearings substantially easier than systems employing circular isolation bearings. Due to the straight edges of the isolation bearing plates of the present invention, seismic isolation systems can be designed to fit together more strongly and precisely than those having circular bearing plates. Furthermore, when an isolation system employs an array of three or more, or four or more, or five or more, or six or more, isolation bearings having the same or
- the polygonal bearing plates of the present invention may either be manufactured as circular bearing plates with a polygonal "frame" joined thereto by, for example, welds, appropriate fasteners (such as screws, bolts and the like) .
- the polygonal bearing plates may be manufactured as a polygon, again, preferably surrounded by a polygonal frame.
- polygonal frames, bearing plates and the like may have rounded or “radiused” corners without departing from the scope of the invention.
- polygonal or polygon shall be interpreted to mean “generally polygonal”; that is, comprising at least two (and preferably at least three) straight sides wherein the sum of all curves and angles totals 360°.
- connector components can be fabricated easily of, for example, metal tubing, flat plates, or angle iron with standardized placement of connection fittings such as (without limitation) screw or bolt holes, or brackets, for being joined to the polygonal bearing plate (s) and/or framing, flooring or platform elements.
- connection fittings such as (without limitation) screw or bolt holes, or brackets, for being joined to the polygonal bearing plate (s) and/or framing, flooring or platform elements.
- each of opposing sets of polygonal top and bottom bearing plates are linked by, and joined to, connector components to form top and bottom flooring or platform assemblies.
- two or more adjacent polygonal top and/or bottom bearing plates may be joined to each other to form a strong and rigid isolation assembly.
- the top and/or bottom isolation assembly may be constructed without the use of separate connector components.
- the polygonal shape of the seismic bearing plates facilitates directly joining one bearing plate to at least one
- One or more of the bottom bearing plates may also be directly or indirectly joined to a foundation or floor.
- one or more bearing plate may be fastened directly to the foundation using, for example, concrete anchored fasteners or an adhesive for fastening plastics or metals to concrete, such as the 3M Scotch-Weld ® brands of urethane, acrylic and epoxy adhesives.
- One or more of the top bearing plates are preferably directly or indirectly fastened to a platform or flooring element.
- a top bearing plate may be fastened directly to one or more flooring support "tile" or region using bolts, screws or other similar fasteners, or may be joined to a frame for supporting the payload, bearing plate, or tiles.
- the present invention is drawn to a polygonal seismic isolation bearing plate comprising: a) a recessed hardened load-bearing surface
- the frame component comprises a polygonal shape, and wherein said frame component is structured to be joined along at least one straight edge to at least one other component of said isolation platform or flooring system.
- the load-bearing surface component may be welded or otherwise securely joined to a
- the frame component is preferably polygonal in shape, and is structured to be joined to other bearing plate assemblies, or to other components of the isolation flooring or platform assembly.
- the polygonal shape is not a square, or not a rectangle .
- the invention is drawn to a polygonal seismic isolation bearing assembly comprising: a) a hardened ball disposed between b) a top isolation bearing plate, and c) a bottom isolation bearing plate; wherein each said top and bottom isolation bearing plates comprise : i) a recessed hardened load-bearing surface
- the frame component comprises a polygonal shape, and wherein said frame component is structured to be joined along at least one straight edge to at least one other component of said isolation platform or flooring system.
- the frame element of one or both of the top bearing plate or the bottom bearing plate is welded or otherwise joined to its respective load-bearing surface component.
- the frame component is preferably polygonal in shape, and is structured to be joined to other bearing plate assemblies, or to other components of the isolation flooring or platform assembly.
- the polygonal shape is not a square, or not a rectangle.
- top and bottom isolation bearing plates may be directly or indirectly joined to one or more other isolation bearing plate in substantially the same plane.
- An example of indirect joining is by each bearing plate in substantially the same plane being joined to the same connector component.
- each bearing plate in substantially the same plane being joined to a common flooring or platform component.
- the present invention is directed to a seismic isolation floor or platform assembly
- each such bearing assembly comprising: a) a hardened ball disposed between b) a top isolation bearing plate, and c) a bottom isolation bearing plate; wherein each said top and bottom isolation bearing plates comprise : i) a recessed hardened load-bearing surface
- the frame component comprises a polygonal shape, and wherein said frame component is structured to be joined along at least one straight edge to at least one other component of said isolation platform or flooring system.
- At least two of said plurality of polygonal isolation bearing assemblies may be joined in a manner selected from the group consisting of: i) said top isolation bearing plates are directly or indirectly joined together, or ii) said bottom isolation bearing plates are directly or indirectly joined together, or iii) both said top isolation bearing plates are directly or indirectly joined together and said bottom isolation bearing plates are directly or indirectly joined together.
- Fig. 1 shows one example of a finished polygonal (octagonal) isolation bearing plate of the present
- Fig. 2 shows an intermediate stage in the fabrication of the polygonal (octagonal) isolation bearing plate of Fig. 1, showing certain of the components.
- Fig. 3 shows a cross sectional view of the finished of a polygonal (octagonal) isolation bearing plate of Fig. 1.
- Fig. 4 shows another example of a finished polygonal (octagonal) isolation bearing plate of the present
- Fig. 5 shows an intermediate stage in the fabrication of the polygonal (octagonal) isolation bearing plate of Fig. 4, showing certain of the components.
- Fig. 6 shows a cross sectional view of the finished of a polygonal (octagonal) isolation bearing plate of Fig. 4.
- Fig. 7A shows an example of a top view of an example of a connector component .
- Fig. 7B is an end view of the connector component of Fig. 7A.
- Fig. 8A shows an example of a top view of another example of a connector component .
- Fig. 8B is an end view of the connector component of Fig. 8A.
- Fig. 9A shows an example of a top view of another example of a connector component .
- Fig. 9B is an end view of the connector component of Fig. 9A.
- Fig. 10A shows a side view of an example of an L bracket for securing the bearing plate of Fig. 1.
- Fig. 10B shows a end view of the bracket of Fig. 10A.
- Fig. 11 is an example of an arrangement of polygonal bearings and connector components in an isolation platform or flooring system.
- Fig. 12 is another example of an arrangement of polygonal bearings in an isolation platform or flooring system.
- Fig. 13 is another example of an arrangement of polygonal bearings and connector components in an isolation platform or flooring system.
- Fig. 14 is another example of an arrangement of polygonal bearings and connector components in an isolation platform or flooring system.
- Fig. 15 is an example of an arrangement of polygonal bearings and connector components in an isolation platform or flooring system. Detailed Description of the Invention
- Fig. 1 shows one example of a finished polygonal bearing plate of the present invention
- Fig. 2 shows the same bearing plate at an intermediate state of construction
- Fig. 3 is a cross section of the bearing plate of Fig. 1.
- the load bearing surface component 100 is
- a metal such as stainless steel
- a central area 102 comprising a radius in cross section
- a annular area Surrounding this central area is a annular area comprising a region of constant slope 104.
- the bearing surface in this example is drilled and tapped with screw holes 106 for later securing of the bearing plate to an underlying or overlaying surface, if desired.
- the load bearing surface 100 is welded to a circular steel band 110 and a flat bottom plate 112; this assembly is then joined, for example welded, to a frame component 114 comprising lengths of a hardened material (cold rolled steel ("CRS”) in this case) formed, for example, by welding, into an octagon.
- CRS cold rolled steel
- each side of the frame is drilled and tapped 118 for joining to, for example, framing or connector components or other bearing plates with screws or bolts.
- CRS cold rolled steel
- FIG. 2 comprises eight spaces 116 (appearing substantially as triangles in the two dimensional top view) between the steel band 110 and the frame component 114. Filler pieces of metal are then welded to the assembly to fill in the spaces, and the load- bearing surface 100 is polished to form the assembly shown in Fig. 1.
- Fig. 5 shows another example of a finished polygonal (in this case octagonal) bearing plate of the present invention
- Fig. 4 shows the same bearing plate at an intermediate state of construction
- Fig. 6 is a cross section of the bearing plate of Fig. 4.
- the construction and structure of this bearing plate example is similar in principle to that of the bearing plate shown in Fig. 1, 2, and 3.
- the dimensions of the bearing plate are different, and four drilled and tapped connector holes are shown within the central area of the bearing plate surface (see Fig. 4 and Fig. 5) .
- Fig. 7A shows a top view of a connector component; this connector component comprises lengths of steel tubing joined (for example, by welding) into a rectangular structure having two equally sized short end pieces 703, each joined to two equally sized longer spacer pieces 701.
- this connector component comprises lengths of steel tubing joined (for example, by welding) into a rectangular structure having two equally sized short end pieces 703, each joined to two equally sized longer spacer pieces 701.
- FIG. 7B shows an end view of the same connector component, in which two holes 705 are drilled and tapped in the two end pieces of the connector component for connection to, for example, the polygonal frame component (see e.g., 114 of Fig. 1) surrounding the bearing plates.
- Fig. 8A shows an alternative arrangement of connector components, in which the side pieces are replaced with flat plates 801; as in Fig. 7A, the spacer pieces of this example are made of tubing, for example, stainless steel tubing.
- Fig. 8B shows an end view of the connector component assembly shown in Fig. 8A, with holes drilled for connection with the frame component of the bearing plate, as before.
- Fig. 9A is yet another example of a connector
- the spacer pieces 901 are fashioned of lengths of angle iron, while the end pieces 902 are flat plates, as in Fig. 8A.
- Fig. 9B shows an end view of this connector component assembly; the outline of the angle iron spacer pieces 901 is shown.
- Fig. 10A shows a top view of an L bracket component for connecting to the frame component of the bearing plate assembly of e.g., Fig. 1.
- Fig. 10B shows an end view of the same bracket assembly.
- Fig. 11 shows an exemplary arrangement of polygonal bearing plate assemblies in an isolation flooring or isolation platform assembly.
- pairs of octagonal isolation bearing plates 1101 are joined (for example bolted) together along shared flat sides.
- Each bearing plate is also joined to a connector component 1103 and to at least one side of a frame 1105 surrounding the flooring or platform assembly. Similar or different configurations may be used for top and bottom bearing plates.
- Bearing plates may also be joined to an underlying or overlying surface, such as a floor or foundation (for bottom bearing plates) or a platform or frame (for the top bearing plates) .
- Fig. 12 shows another exemplary arrangement of polygonal bearing plates in an isolation flooring or isolation platform assembly.
- isolation bearing plates 1201 are joined (for example bolted) together along shared flat sides; each pair of these and separated by single isolation bearing plates 1203 not joined together and either resting or joined to an underlying or overlying surface, such as a floor or foundation (e.g., for the bottom bearing plates) or a platform or frame (e.g., for the top bearing plates).
- a floor or foundation e.g., for the bottom bearing plates
- a platform or frame e.g., for the top bearing plates
- top and bottom bearing plates Similar or different configurations may be used for top and bottom bearing plates.
- Fig. 13 shows another exemplary arrangement of polygonal bearing plates in an isolation flooring or isolation platform assembly.
- each of four polygonal isolation bearing plates 1301 are joined to two sides of a frame 1303 surrounding the flooring or platform assembly.
- Each isolation bearing plate is also joined to a connector component 1305.
- each connector component is joined to two isolation bearing plates.
- Fig. 14 shows another exemplary arrangement of polygonal bearing plates in an isolation flooring or isolation platform assembly.
- each of four polygonal isolation bearing plates are joined to two sides of a frame surrounding the flooring or platform assembly, and to one other isolation bearing plate.
- Each isolation bearing plate is also joined to a connector component.
- each connector component is joined to two isolation bearing plates.
- each of four polygonal isolation bearing plates are joined to two sides of a frame surrounding the flooring or platform assembly, and to one other isolation bearing plate.
- Each isolation bearing plate is also joined to a connector component.
- each connector component is joined to two isolation bearing plates. This arrangement is similar to that shown in Fig. 14, except the connector components are elongated in comparison.
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Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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JP2016525994A JP2017502182A (en) | 2013-11-11 | 2014-10-29 | Polygonal seismic isolation system |
CA2930193A CA2930193C (en) | 2013-11-11 | 2014-10-29 | Polygonal seismic isolation systems |
Applications Claiming Priority (2)
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US201361902420P | 2013-11-11 | 2013-11-11 | |
US61/902,420 | 2013-11-11 |
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WO2015069518A1 true WO2015069518A1 (en) | 2015-05-14 |
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PCT/US2014/062916 WO2015069518A1 (en) | 2013-11-11 | 2014-10-29 | Polygonal seismic isolation systems |
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US (1) | US20150128510A1 (en) |
JP (1) | JP2017502182A (en) |
CA (1) | CA2930193C (en) |
CL (1) | CL2016001117A1 (en) |
PE (1) | PE20161037A1 (en) |
WO (1) | WO2015069518A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2016201109A1 (en) * | 2015-06-10 | 2016-12-15 | The Regents Of The University Of California | Architected material design for seismic isolation |
JP2019518154A (en) * | 2016-06-06 | 2019-06-27 | ワークセイフ テクノロジーズWorksafe Technologies | Seismic isolation system with load bearing surface with polymeric material |
US10119290B2 (en) | 2016-08-02 | 2018-11-06 | Worksafe Technologies | Modular isolation supports and floors |
JP7499927B1 (en) | 2023-09-08 | 2024-06-14 | 日鉄エンジニアリング株式会社 | Sliding bearings, sliding bearing construction structures, and seismic isolation structures |
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ES2169683B1 (en) * | 2000-09-22 | 2003-12-01 | Innovacion Y Diseno Orovay S L | MODULAR PROVISION OF PROTECTION ANTISEISMS APPLICABLE IN THE CONSTRUCTION OF BUILDINGS AND SIMILAR. |
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IT1396455B1 (en) * | 2009-11-16 | 2012-11-23 | Tecnostrutture S R L | SYSTEM OF PRE-MANUFACTURED SISMORESISTIC ELEMENTS FOR BUILDING AND ITS APPLICATION PROCEDURE. |
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2014
- 2014-10-29 WO PCT/US2014/062916 patent/WO2015069518A1/en active Application Filing
- 2014-10-29 US US14/527,313 patent/US20150128510A1/en not_active Abandoned
- 2014-10-29 CA CA2930193A patent/CA2930193C/en active Active
- 2014-10-29 PE PE2016000613A patent/PE20161037A1/en not_active Application Discontinuation
- 2014-10-29 JP JP2016525994A patent/JP2017502182A/en active Pending
-
2016
- 2016-05-11 CL CL2016001117A patent/CL2016001117A1/en unknown
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US20130247505A1 (en) * | 2002-07-15 | 2013-09-26 | Worksafe Technologies | Isolation Platform |
US20070261323A1 (en) * | 2003-07-15 | 2007-11-15 | Worksafe Technologies | Seismically stable flooring |
US20050241245A1 (en) * | 2004-04-29 | 2005-11-03 | Chong-Shien Tsai | Foundation shock eliminator |
JP2011122602A (en) * | 2009-12-08 | 2011-06-23 | Chubu Electric Power Co Inc | Multi-stage base isolation device |
US20110222800A1 (en) * | 2010-03-04 | 2011-09-15 | Worksafe Technologies | Methods and Compositions for Isolating a Payload from Vibration |
Also Published As
Publication number | Publication date |
---|---|
CA2930193C (en) | 2018-12-18 |
US20150128510A1 (en) | 2015-05-14 |
CL2016001117A1 (en) | 2017-06-30 |
PE20161037A1 (en) | 2016-10-21 |
JP2017502182A (en) | 2017-01-19 |
CA2930193A1 (en) | 2015-05-14 |
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