FR2238824A1 - Prestressed steel portal frame - is prestressed at its apex to reduce moments in columns - Google Patents

Prestressed steel portal frame - is prestressed at its apex to reduce moments in columns

Info

Publication number
FR2238824A1
FR2238824A1 FR7327912A FR7327912A FR2238824A1 FR 2238824 A1 FR2238824 A1 FR 2238824A1 FR 7327912 A FR7327912 A FR 7327912A FR 7327912 A FR7327912 A FR 7327912A FR 2238824 A1 FR2238824 A1 FR 2238824A1
Authority
FR
France
Prior art keywords
prestressed
columns
apex
portal frame
bottom flanges
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.)
Granted
Application number
FR7327912A
Other languages
French (fr)
Other versions
FR2238824B1 (en
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.)
BRIZET ANDRE FR
Original Assignee
BRIZET ANDRE FR
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 BRIZET ANDRE FR filed Critical BRIZET ANDRE FR
Priority to FR7327912A priority Critical patent/FR2238824A1/en
Publication of FR2238824A1 publication Critical patent/FR2238824A1/en
Application granted granted Critical
Publication of FR2238824B1 publication Critical patent/FR2238824B1/fr
Granted legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/38—Arched girders or portal frames
    • E04C3/40—Arched girders or portal frames of metal
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C3/10—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal prestressed
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0408—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section
    • E04C2003/0421—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section comprising one single unitary part
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0426—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by material distribution in cross section
    • E04C2003/0434—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by material distribution in cross section the open cross-section free of enclosed cavities
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0443—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section
    • E04C2003/0452—H- or I-shaped

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Rod-Shaped Construction Members (AREA)

Abstract

The portal frame has columns which are hinged at ground level and a pitched beam. This beam (4) is cut at its apex, thus dividing the beam into two parts (4a & 4b). On the top are web plates (7 & 8). Between these is a spacer (11) on the whole assembly is bolted together. Two plates, attached to the bottom flanges, are also bolted together, but without the spacer. The bottom flanges of the beam are drawn together, thereby prestressing the beam. Tensile forces are induced in the bottom flanges. This technique reduces the bending moments in the columns and increases those of the beam.
FR7327912A 1973-07-25 1973-07-25 Prestressed steel portal frame - is prestressed at its apex to reduce moments in columns Granted FR2238824A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7327912A FR2238824A1 (en) 1973-07-25 1973-07-25 Prestressed steel portal frame - is prestressed at its apex to reduce moments in columns

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7327912A FR2238824A1 (en) 1973-07-25 1973-07-25 Prestressed steel portal frame - is prestressed at its apex to reduce moments in columns

Publications (2)

Publication Number Publication Date
FR2238824A1 true FR2238824A1 (en) 1975-02-21
FR2238824B1 FR2238824B1 (en) 1976-11-12

Family

ID=9123361

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7327912A Granted FR2238824A1 (en) 1973-07-25 1973-07-25 Prestressed steel portal frame - is prestressed at its apex to reduce moments in columns

Country Status (1)

Country Link
FR (1) FR2238824A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0606010A1 (en) * 1993-01-08 1994-07-13 The Manitowoc Company Ring segment connection
WO2002053852A1 (en) * 2000-12-28 2002-07-11 Mara-Institut D.O.O. Flat soffit, doubly prestressed, composite, roof-ceiling construction for large span industrial buildings

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0606010A1 (en) * 1993-01-08 1994-07-13 The Manitowoc Company Ring segment connection
US5522515A (en) * 1993-01-08 1996-06-04 The Manitowoc Company, Inc. Ring segment connection
WO2002053852A1 (en) * 2000-12-28 2002-07-11 Mara-Institut D.O.O. Flat soffit, doubly prestressed, composite, roof-ceiling construction for large span industrial buildings
LT5093B (en) 2000-12-28 2004-01-26 Mara-Institut D. O. O. Flat soffit, doubly prestressed, composite, roof-ceiling construction for large span industrial buildings
US6966159B2 (en) 2000-12-28 2005-11-22 Mara-Institut D.O.O. Flat soffit, doubly prestressed, composite, roof-ceiling construction for large span industrial buildings
HRP20000906B1 (en) * 2000-12-28 2009-05-31 Mara-Institut D.O.O. Flat soffit, doubly prestressed, composite, roof-ceiling construction for large span industrial buildings

Also Published As

Publication number Publication date
FR2238824B1 (en) 1976-11-12

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Legal Events

Date Code Title Description
ST Notification of lapse
AR Application made for restoration
BR Restoration of rights
ST Notification of lapse