EP1882797A2 - Composite energy absorbing structure - Google Patents

Composite energy absorbing structure Download PDF

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Publication number
EP1882797A2
EP1882797A2 EP07252930A EP07252930A EP1882797A2 EP 1882797 A2 EP1882797 A2 EP 1882797A2 EP 07252930 A EP07252930 A EP 07252930A EP 07252930 A EP07252930 A EP 07252930A EP 1882797 A2 EP1882797 A2 EP 1882797A2
Authority
EP
European Patent Office
Prior art keywords
shear wall
structural member
wall panel
floor slab
absorbing structure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP07252930A
Other languages
German (de)
English (en)
French (fr)
Inventor
Alle Gjelsvik
Stanley Stomchos
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMI Patent Holdings Group LLC
Original Assignee
SMI Patent Holdings Group LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SMI Patent Holdings Group LLC filed Critical SMI Patent Holdings Group LLC
Publication of EP1882797A2 publication Critical patent/EP1882797A2/en
Withdrawn legal-status Critical Current

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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
    • 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
    • E04H9/028—Earthquake withstanding shelters

Definitions

  • the present invention relates to an energy absorbing structure which is constructed to transfer horizontal forces from floor slabs to shear wall panels to permit buildings to withstand earthquakes and other forces exerted on them.
  • engineers can choose various structural components, such as shear walls, braced frames, moment resisting frames, diaphragms and horizontal trusses.
  • These building elements impart earthquake resistant structures with the ability to resist and sometimes to absorb and dissipate seismically induced motion through a combination of means, including damping means which absorbs energy and decreases the amplitude of oscillations of a vibrating structure and inelastic deformation means which can withstand considerable inelastic deformation.
  • the structural elements can be used alone or in combination to achieve the necessary strength and energy absorption and dissipation.
  • Shear walls are an example of a structural element used in earthquake resistance structures.
  • a shear wall is a vertical element in a building lateral load resisting system that transfers horizontal forces vertically downward from a diaphragm above to a diaphragm or a foundation below.
  • horizontal wind or seismic forces are collected at floor or roof diaphragm levels and transferred to the building foundation by the strength and rigidity of the shear walls.
  • concrete floor slabs often act as diaphragms, and thus the connection between the floor slabs and the shear wall panels is critical for effective transference of lateral forces.
  • the stronger the connection between the shear wall panels and the floor slabs the more effective the entire lateral load resisting system will be in transferring lateral loads to the foundation.
  • a shear wall panel partially embedded in a floor slab transfers horizontal forces from the floor slab to the shear wall or from one floor slab to an adjacent floor slab.
  • a composite energy absorbing structure according to an exemplary embodiment of the present invention includes a shear wall panel having at least one horizontally-disposed structural member at least partially embedded in a floor slab such that horizontal forces exerted on the floor slab are transferred to the shear wall panel through the structural member.
  • the structural member includes two or more bars each having an angle shape in cross section and each having a vertical leg and a horizontal leg.
  • the invention also encompasses a method of forming a composite structure in a building, including forming a shear wall panel having a structural member, and at least partially embedding the structural member in a floor slab, such that horizontal forces exerted on the floor slab are transferred to the shear wall panel through the structural member.
  • FIG. 1 illustrates a shear wall according to an exemplary embodiment of the present invention
  • FIG. 2 illustrates a shear wall according to another exemplary embodiment of the present invention
  • FIG. 3 is a cross-sectional view along the line A-A shown in FIG. 1;
  • FIG. 4 is a perspective view showing the shear wall of FIG. 1 including a structural member imbedded in a floor slab.
  • the various exemplary embodiments of the present invention are directed to a shear wall that imparts buildings with the ability to withstand forces caused by, for example, earthquakes.
  • the shear wall includes multiple shear wall panels, each including, as a component, a structural member, that transfers horizontal forces exerted on floor slabs, in which the structural member is at least partially embedded, to the shear wall panel.
  • the various concepts of the present invention are not necessarily limited to earthquake resistant structures, but are also applicable to structures that are designed to withstand forces generated by any other factor, such as, for example, explosions or high winds. It should also be appreciated that the present invention is not limited to the particular shear wall structures expressly illustrated herein and that other shear wall structures may be used.
  • FIG. 1 shows a shear wall panel, generally designated by reference number 10, according to an exemplary embodiment of the present invention.
  • the shear wall panel 10 may be one of many such panels that make up one shear wall of a building.
  • the shear wall panel 10 is composed of a generally rectangular shaped frame including two vertically disposed frame members 12 and two horizontally disposed structural members 14.
  • An opening 16 is defined by the frame members 12 and structural members 14 within the shear wall panel 10.
  • the frame members 12 and structural members 14 may be attached to each other by any suitable means, such as, for example, pin joints, welding, bolts or connector elements 18.
  • the shear wall panel also includes shear transfer means which can take any useful form.
  • FIG. 1 shows the shear transfer means as diagonal braces 20.
  • Another type of shear transfer means may include a shear panel or a suitable energy absorber such as shown in FIG. 2 and described in co-pending U.S. Patent Application Serial No. 10/941,159 , incorporated herein by reference.
  • the energy absorber generally designated by reference number 21, includes a ductile member 22 and four braces 24.
  • the braces 24 support the ductile member 22 at substantially the center of the opening 16.
  • the ductile member 22 is formed of a ductile material, such as, for example, steel or aluminum.
  • braces 24 are connected to the ductile member 22 by any suitable fastening elements, such as, for example, adjustable nuts 26.
  • the opposite ends of the braces 24 are attached to respective corners of the connector elements 18 by, for example, pin joints, welding or bolts.
  • the number of braces 24 is not limited to four and any number of braces 24 can be used in the various exemplary embodiments of the invention.
  • the braces 24 are tension rods, but can also be any other suitably rigid structural supports for the ductile element 22.
  • the ductile member 22 need not be ring-shaped, as shown in FIG. 2, but could have other shapes as would be understood by workers skilled in the art.
  • Structural members 14 can take any useful form, for example angles or I-beams. As best seen in FIG. 3, which is a cross-sectional view along the line A-A in FIG. 1, the structural members 14 may each include two metal bars, generally designated by reference numbers 26, 28. Such structural members are disclosed in U.S. Patent No. 4,592,184 , incorporated herein by reference. Each of the bars 26, 28 have an angle shape and include a vertical leg 30 and a horizontal leg 32. The horizontal leg 32 of the bar 26 extends in the opposite direction from that in which the horizontal leg 32 of the bar 28 extends. The height of the vertical legs 30 of the bars 26, 28 are preferably the same, although in other embodiments the heights may be different.
  • the vertical legs 30 of the two bars 26, 28 are spaced apart by the width of the connector elements 18.
  • Concrete engaging means 34 such as, for example, protrusions or slots are preferably formed at spaced intervals along the length of the vertical legs 30. It should be appreciated that the bars 26, 28 may have any other suitable shape.
  • a shear wall panel 10 is incorporated into a building structure by forming the concrete floor slab 36 in intimate contact with shear wall panel 10.
  • concrete may be poured such that the structural member 14 is at least partially, but preferably completely, embedded in the floor slab 36.
  • the floor slab 36 may form a component of a flooring system, such as the flooring system disclosed in U.S. Patent No. 4,592,184 .
  • the shear wall panel 10 may also extend upwards into an upper floor, such that the upper structural member 14 may also be embedded in a floor slab 36 of an upper flooring system. Many such shear wall panels are embedded in the floor slabs of a building to form the entire building structure.
  • any horizontal forces exerted on the floor slabs 36 will be transferred to the shear wall 10 through the structural members 14 and/or from one floor slab to a neighboring floor slab.
  • the deformed structural members 14 enable the floor slabs 36 to more effectively act as diaphragms in transferring energy to the shear wall 10 or to a neighboring floor slab 36.
EP07252930A 2006-07-26 2007-07-24 Composite energy absorbing structure Withdrawn EP1882797A2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/494,592 US20080022610A1 (en) 2006-07-26 2006-07-26 Composite energy absorbing structure

Publications (1)

Publication Number Publication Date
EP1882797A2 true EP1882797A2 (en) 2008-01-30

Family

ID=38626922

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07252930A Withdrawn EP1882797A2 (en) 2006-07-26 2007-07-24 Composite energy absorbing structure

Country Status (5)

Country Link
US (1) US20080022610A1 (ja)
EP (1) EP1882797A2 (ja)
JP (1) JP2008045393A (ja)
CA (1) CA2592710A1 (ja)
MX (1) MX2007008487A (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101881056A (zh) * 2010-06-11 2010-11-10 北京工业大学 内分式叠合柱边框-双层钢板混凝土组合剪力墙及其制作方法
CN101748828B (zh) * 2009-12-18 2011-08-10 北京工业大学 钢管混凝土叠合柱边框内藏钢板及钢桁架联肢剪力墙
EP3012379A1 (en) * 2014-10-22 2016-04-27 STAP-Reparação, Consolidação e Modificação de Estruturas, S.A. Dissipator panels and respective building system

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US8397444B2 (en) * 2006-10-30 2013-03-19 University Of Utah Research Foundation Perforated plate seismic damper
US8037647B2 (en) * 2006-10-30 2011-10-18 University Of Utah Research Foundation Perforated plate seismic damper
US8099914B2 (en) * 2006-10-30 2012-01-24 The University Of Utah Research Foundation Perforated plate seismic damper
CN102425249B (zh) * 2011-08-22 2014-06-11 中国建筑设计研究院 钢板剪力墙的洞口构造
US20130145702A1 (en) * 2011-12-08 2013-06-13 Yoshikazu Oba Earthquake-Resistant Structure and Earthquake-Resistant Construction Method
US9145679B2 (en) 2012-06-14 2015-09-29 Xtreme Manufacturing, Llc Form assembly for concrete slabs and methods of assembling same
US9316012B2 (en) * 2013-04-26 2016-04-19 W. Charles Perry Systems and methods for retrofitting a building for increased earthquake resistance
CN103912072B (zh) * 2013-12-26 2016-11-09 北京工业大学 一种内藏交叉梯格钢筋填充墙及做法
GB201502792D0 (en) * 2015-02-19 2015-04-08 Pare Andre Storage rack systeme and method
CN107130708A (zh) * 2017-06-28 2017-09-05 华南理工大学 一种提高剪力墙延性的搭接焊箍筋与方法
CN110320235B (zh) * 2019-07-29 2024-01-16 东南大学 一种双钢板-混凝土组合剪力墙单面受火试验装置及方法

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US4441289A (en) * 1980-05-07 1984-04-10 Takenaka Komuten Co., Ltd. Earthquake-resistant reinforcement structure for an existing building with compression braces or tension braces
US4409765A (en) * 1980-06-24 1983-10-18 Pall Avtar S Earth-quake proof building construction
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101748828B (zh) * 2009-12-18 2011-08-10 北京工业大学 钢管混凝土叠合柱边框内藏钢板及钢桁架联肢剪力墙
CN101881056A (zh) * 2010-06-11 2010-11-10 北京工业大学 内分式叠合柱边框-双层钢板混凝土组合剪力墙及其制作方法
CN101881056B (zh) * 2010-06-11 2011-12-07 北京工业大学 内分式叠合柱边框-双层钢板混凝土组合剪力墙及其制作方法
EP3012379A1 (en) * 2014-10-22 2016-04-27 STAP-Reparação, Consolidação e Modificação de Estruturas, S.A. Dissipator panels and respective building system

Also Published As

Publication number Publication date
JP2008045393A (ja) 2008-02-28
US20080022610A1 (en) 2008-01-31
CA2592710A1 (en) 2008-01-26
MX2007008487A (es) 2009-01-07

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