EP0355356B1 - Erdbebensichere Metallgebäudekonstruktion - Google Patents

Erdbebensichere Metallgebäudekonstruktion Download PDF

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Publication number
EP0355356B1
EP0355356B1 EP89112515A EP89112515A EP0355356B1 EP 0355356 B1 EP0355356 B1 EP 0355356B1 EP 89112515 A EP89112515 A EP 89112515A EP 89112515 A EP89112515 A EP 89112515A EP 0355356 B1 EP0355356 B1 EP 0355356B1
Authority
EP
European Patent Office
Prior art keywords
construction according
girders
sectional area
reduction
girder
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.)
Expired - Lifetime
Application number
EP89112515A
Other languages
English (en)
French (fr)
Other versions
EP0355356A1 (de
Inventor
André Plumier
Raymond Baus
René Pepin
Jean-Baptiste Schleich
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.)
Arcelor Luxembourg SA
Original Assignee
Arbed SA
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 Arbed SA filed Critical Arbed SA
Priority to AT89112515T priority Critical patent/ATE72288T1/de
Publication of EP0355356A1 publication Critical patent/EP0355356A1/de
Application granted granted Critical
Publication of EP0355356B1 publication Critical patent/EP0355356B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
    • E04B1/2403—Connection details of the elongated load-supporting parts
    • E04B2001/2442—Connections with built-in weakness points
    • 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
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
    • E04B1/2403—Connection details of the elongated load-supporting parts
    • E04B2001/2448—Connections between open section profiles
    • 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
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
    • E04B2001/2496—Shear bracing therefor

Definitions

  • the invention relates to an earthquake-resistant metal frame consisting of columns and profiles, possibly provided with concrete.
  • the latter objective is achieved by imposing a resistance R d of the assemblies greater than 120% of the plastic resistance R fy of the assembled bars, ie. R d > 1.2 R fy .
  • R fy represents the plastic moment M p of the bars.
  • R fy is the normal plastic force N p of the bars. This is a very restrictive condition, leading to costly assemblies, difficult if not impossible to achieve.
  • the object of the invention is to propose a metal frame having excellent behavior during an earthquake while being light, of simple and economical construction.
  • Figs. 1 and 2 there is a column 1 connected via an end plate 2 to a beam 3.
  • the connection end plate-beam is usually made by welding while the end plate is bolted to the column.
  • a Code requirement requires that the dissipative zones be located in the beams and not in the columns.
  • the section of the beam near the assembly 4 has been reduced over a length 1 equal to the height h of the beam. This length is in fact the minimum length necessary for the formation of a plastic ball joint.
  • the extent of the shrinkage 5 can be worth around 30% of the width b of the beams' wings.
  • the minimum distance from the start of the narrowing to the assembly 4 is of the order of a quarter of the width of the wings of the beam.
  • the reduction in effective cross-section of the beam can also take the form of a reduction in cross-section by drilling or by punching multiple holes 6, as shown in FIG. 3.
  • a part of a trellis structure is distinguished.
  • the stretched diagonals 42 are made with angles.
  • the upper frame 41 constituted by U-shaped profiles, is connected by means of a gusset 43 and angles 44 and 45 to the column 40.
  • the invention here takes on a particularly elegant appearance by providing a reduction in section 46 in the stretched diagonals 42 intended to constitute a dissipative zone which is reliable in traction.
  • a dissipative zone can be provided towards each end of the stretched diagonals. For reasons of economy of manufacture, they are only provided near one of the ends, in general that which is fixed to the upper chord.
  • the stretched diagonal 42 has a reduction in effective section due to a multitude of holes 47.
  • Fig. 6 shows a simpler trellis structure, in which the upper member 41 is directly fixed to the gusset 43. Similarly, the gusset 43 is directly welded to the column 40.
  • the reduction in effective section 48 here consists of an ellipsoidal cut in the edge of one of the two wings of each angle. One can also perform a less pronounced removal in the two wings of an angle.
  • the proposed solution leads on the one hand to a loss of useful cross section of the diagonals which can reach 50%, but the reduction factor on the design forces is 4 if the lattice structure can be considered dissipative.
  • the overall result therefore remains a reduction in the steel used for the diagonals by a factor of the order of 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Environmental & Geological Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
  • Rod-Shaped Construction Members (AREA)

Claims (9)

1. Erdbebensichere Metallgebäudekonstruktion welche aus Kolonnen und sich auf den Kolonnen abstützenden Trägern besteht, wobei die Kolonnen und/oder die Träger gegebenenfalls mit Beton versehen sind, dadurch gekennzeichnet, dass die Träger in der Nähe von wenigstens einem ihrer Enden einen energievernichtenden Bereich in der Form einer effektiven Querschnittsverringerung aufweisen.
2. Konstruktion gemäss Anspruch 1, dadurch gekennzeichnet, dass die effektive Querschnittsverringerung in einem trapezförmigen Ausschnitt in den Rändern der Flanschen besteht, wobei die grössere Basis sich mit dem Rand des Flansches deckt und wobei die kleinere Basis eine Länge besitzt die wenigstens so gross ist wie die Höhe des Trägers.
3. Konstruktion gemäss Anspruch 2, dadurch gekennzeichnet, dass die nicht parallelen Seiten des Trapezes mit der grossen Basis desselben einen Winkel von höchstens 60° bilden und dass die Höhe des Trapezes höchstens 30% der Breite des Flansches des Trägers beträgt.
4. Konstruktion gemäss Anspruch 1, dadurch gekennzeichnet, dass die effektive Querschnittsverringerung in einem im wesentlichen ellipsenförmigen Ausschnitt in den Rändern der Flanschen besteht.
5. Konstruktion gemäss Anspruch 1, dadurch gekennzeichnet, dass die effektive Querschnittsverringerung in wenigstens einem Ausschnitt besteht, der sich über eine Strecke ausdehnt, welche mit der Höhe des Trägers wenigstens gleich ist.
6. Konstruktion gemäss Anspruch 5, dadurch gekennzeichnet, dass die Ausnehmungen runde Löcher mit geringem Querschnitt sind, welche gleichmässig über die so verjüngte Fläche verteilt sind.
7. Konstruktion gemäss Anspruch 5, dadurch gekennzeichnet, dass die Ausnehmungen einen viereckigen oder einen rechteckigen Querschnitt besitzen.
8. Konstruktion gemäss einem der Ansprüch 1 bis 7, dadurch gekennzeichnet, dass die Träger eine H-förmige oder eine I-förmige Querschnittsform aufweisen und dass sie einen Teil einer Rahmenkonstruktion darstellen.
9. Konstruktion gemäss einem der Ansprüch 1 bis 7, dadurch gekennzeichnet, dass die Träger eine U-förmige oder eine L-förmige Querschnittsform aufweisen und dass sie den oberen Gurt einer Fachwerkkonstruktion mit dessen unterem Gurt verbinden.
EP89112515A 1988-08-24 1989-07-08 Erdbebensichere Metallgebäudekonstruktion Expired - Lifetime EP0355356B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89112515T ATE72288T1 (de) 1988-08-24 1989-07-08 Erdbebensichere metallgebaeudekonstruktion.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU87320 1988-08-24
LU87320A LU87320A1 (fr) 1988-08-24 1988-08-24 Charpente metallique antisismique

Publications (2)

Publication Number Publication Date
EP0355356A1 EP0355356A1 (de) 1990-02-28
EP0355356B1 true EP0355356B1 (de) 1992-01-29

Family

ID=19731085

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89112515A Expired - Lifetime EP0355356B1 (de) 1988-08-24 1989-07-08 Erdbebensichere Metallgebäudekonstruktion

Country Status (7)

Country Link
US (1) US5148642A (de)
EP (1) EP0355356B1 (de)
JP (1) JPH0288833A (de)
AT (1) ATE72288T1 (de)
DE (1) DE68900793D1 (de)
ES (1) ES2029099T3 (de)
LU (1) LU87320A1 (de)

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US7047695B2 (en) 1995-04-11 2006-05-23 Seismic Structural Design Associates, Inc. Steel frame stress reduction connection
US6237303B1 (en) * 1995-04-11 2001-05-29 Seismic Structural Design Steel frame stress reduction connection
US5680738A (en) * 1995-04-11 1997-10-28 Seismic Structural Design Associates, Inc. Steel frame stress reduction connection
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Also Published As

Publication number Publication date
EP0355356A1 (de) 1990-02-28
DE68900793D1 (de) 1992-03-12
LU87320A1 (fr) 1990-03-13
ES2029099T3 (es) 1992-07-16
JPH0288833A (ja) 1990-03-29
ATE72288T1 (de) 1992-02-15
US5148642A (en) 1992-09-22

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