US1954357A - Reenforcing structural member - Google Patents

Reenforcing structural member Download PDF

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Publication number
US1954357A
US1954357A US583812A US58381231A US1954357A US 1954357 A US1954357 A US 1954357A US 583812 A US583812 A US 583812A US 58381231 A US58381231 A US 58381231A US 1954357 A US1954357 A US 1954357A
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old
new
openings
reenforcing
edges
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US583812A
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Arthur G Leake
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    • 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
    • E04C3/06—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with substantially solid, i.e. unapertured, web
    • 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
    • E04C2003/0413—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 being built up from several parts
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49616—Structural member making
    • Y10T29/49618—Restoring existing member, e.g., reinforcing, repairing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49718—Repairing
    • Y10T29/49721—Repairing with disassembling
    • Y10T29/49723—Repairing with disassembling including reconditioning of part
    • Y10T29/49725—Repairing with disassembling including reconditioning of part by shaping

Definitions

  • This invention relates to reenforcing structural members, such as in building structures, bridges and the like, and has for an object to provide a method and means of reenforcing any of the structural members or,any part thereof without tearing down the structure or disturbing the rivets, and which may be applied while the structure is in position and under load.
  • Fig. 1 is a side elevation of a portion of a beam or girder-"showing the application of my invention
  • Fig. 2 is a vertical section through the same substantially on line 2-2 of Fig. 1;
  • Fig. 3 is a top plan view of the structure in Fig. 1;
  • Fig. 4 is a detailed section on an enlarged scale substantially on line 44 of Fig. 3.
  • the invention consists broadly in reenforcing structural members, such as beams, trusses, columns, chords of trusses, webs of plate girders, built-up girders, and the like, where they have deteriorated, or if they are not deteriorated to increase their load carrying capacity, without disturbing the structure or the present rivet heads, and therefore ,it may be applied while the member being strengthened is left in position or is even under load.
  • structural members such as beams, trusses, columns, chords of trusses, webs of plate girders, built-up girders, and the like, where they have deteriorated, or if they are not deteriorated to increase their load carrying capacity, without disturbing the structure or the present rivet heads, and therefore ,it may be applied while the member being strengthened is left in position or is even under load.
  • 1 As illustrating the invention, I have shown it in the drawing as applied to a built-up girder, but as indicated above this is merely by
  • the structural member shown comprises a web 10 with angle members 11 riveted to the opposite edges thereof by the rivets 12, and the structure strengthened by longitudinal plates 13 and 14 riveted to the outwardly extending flanges of the upper and lower angle members respectively by the rivets 15. If the structure is deteriorated, or eventhough it is still in good condition and it is desired to strengthen it to carry a heavier load, with my improved method the structure can be strengthened without disturbing theheads of the rivets and without disturbing the structure. I accomplish this by taking a new structural member of any desired shape or section and provided with openings of a spacing corresponding to the spacing of the rivet heads, and which openings are somewhat larger 5 than the rivet heads so as to provide a clearance around the heads when the new member is placed against the old member.
  • the holes or openings can be provided by punching, drilling or burning these holes, and after the paint, rust and scale has been cleaned from thesurfaces of the old member, the new member can be applied against it and welded in position as will be more fully described.
  • the paint, rust and scale can be removed by acetylene and oxygen torch, scraping the cleaning with a wire brush, and/or other cleaning tools.
  • a new cover plate 16 or 17 is provided with openings 18 by any' suitable means, such as punching, drilling or burning, which openings are spaced to correspond with the spacing of the rivets 15, and these openings are somewhat larger than the rivet heads to provide sufficient clearance for properly welding after the surfaces of the old member, as the top surface of the member 13 and the bottom surface of the member 14 are properly cleaned and the new plate is placed against it. Then with the rivet heads in the openings 18, the edges of the openings are welded to the old plate or member 13 or 14 as the case may be and to the head of the rivet as indicated at 19.
  • This welding is preferably done by electric welding, although not necessarily so, and the weld metal 19 is thoroughly welded to the edges of the openings 18, the surface of the old structure is indicated at 20, and to the head of the rivet, all as clearly shown in Fig. 4, making a uniform structure, and preferably filling up the space between the rivet head and the edges of the openings 18 flush with the top or outer surface of the new member. Then the edges of the new member may be welded to the old member or the edges of the old member to the new member whichever happens to be the proper procedure and as required.
  • a the top of the girder shown in the drawing the new plate 16 is somewhat narrower than the old plate 13, and therefore the edges of the new plate are welded to the surface of the old plate as indicated at 21.
  • the new plate 17 is shown as of greater width than the old plate 14, and therefore here the edges of the old plate 14 are welded to the surface of the new plate 17 as indicated at 22.
  • the method of reenforcing structural members including members held together by rivets which comprises providing holes in a new cover plate, having said holes spaced to correspond with the spacing of the rivets and somewhat larger than the rivet heads, placing this plate against the structural member with the rivets in the openings, and welding the edges of the holes to the rivet heads and the old member and also welding the edges of the new plate to the old member.
  • the method of reenforcing structural structures including members held together by rivets which comprises providing a new structural member with openings of a size somewhat larger than the rivet heads and spaced to correspond therewith, placing the new member against one of the old members with the heads of the rivets in said openings, welding the new member in said openings to the old member and the rivet heads, and also welding edges or one of the old members to the new member.
  • a reenforced structure comprising structural members held together by rivets, a reeniorcing member resting against one oi said structural members having openings of somewhat larger diameter than the rivet heads and located with the rivet heads in the openings, welded connections about the edges of the openings securing the reenforcing member to the rivet heads and the old member, and welded connections between edges 01' the reenrorcing member and one of the structural members.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Joining Of Building Structures In Genera (AREA)

Description

April 0, 1934. A. ca. LEAKE 1,954,357
REENFORCING STRUCTURAL MEMBER Filed Dec; 30, 1931 gmmtoe Patented Apr. 10, 1934 UNITED STATES PATENT OFFICE Arthur G. Leake, Bridgeport, Conn.
Application December 30, 1931, Serial No. 583,812
3 Claims.
This invention relates to reenforcing structural members, such as in building structures, bridges and the like, and has for an object to provide a method and means of reenforcing any of the structural members or,any part thereof without tearing down the structure or disturbing the rivets, and which may be applied while the structure is in position and under load.
With the foregoing and other objects in view,
the invention consists in a certain novel method and structure as will be more fully disclosed in connection with the accompanying drawing.
In the drawing:
Fig. 1 is a side elevation of a portion of a beam or girder-"showing the application of my invention;
Fig. 2 is a vertical section through the same substantially on line 2-2 of Fig. 1;
Fig. 3 is a top plan view of the structure in Fig. 1; and
Fig. 4 is a detailed section on an enlarged scale substantially on line 44 of Fig. 3.
The invention consists broadly in reenforcing structural members, such as beams, trusses, columns, chords of trusses, webs of plate girders, built-up girders, and the like, where they have deteriorated, or if they are not deteriorated to increase their load carrying capacity, without disturbing the structure or the present rivet heads, and therefore ,it may be applied while the member being strengthened is left in position or is even under load. 1 As illustrating the invention, I have shown it in the drawing as applied to a built-up girder, but as indicated above this is merely by way of illustration, and the method and structure may be applied to various other structural members as indicated above.
The structural member shown comprises a web 10 with angle members 11 riveted to the opposite edges thereof by the rivets 12, and the structure strengthened by longitudinal plates 13 and 14 riveted to the outwardly extending flanges of the upper and lower angle members respectively by the rivets 15. If the structure is deteriorated, or eventhough it is still in good condition and it is desired to strengthen it to carry a heavier load, with my improved method the structure can be strengthened without disturbing theheads of the rivets and without disturbing the structure. I accomplish this by taking a new structural member of any desired shape or section and provided with openings of a spacing corresponding to the spacing of the rivet heads, and which openings are somewhat larger 5 than the rivet heads so as to provide a clearance around the heads when the new member is placed against the old member. The holes or openings can be provided by punching, drilling or burning these holes, and after the paint, rust and scale has been cleaned from thesurfaces of the old member, the new member can be applied against it and welded in position as will be more fully described. The paint, rust and scale can be removed by acetylene and oxygen torch, scraping the cleaning with a wire brush, and/or other cleaning tools.
In the specific illustration in the drawing a new cover plate 16 or 17 is provided with openings 18 by any' suitable means, such as punching, drilling or burning, which openings are spaced to correspond with the spacing of the rivets 15, and these openings are somewhat larger than the rivet heads to provide sufficient clearance for properly welding after the surfaces of the old member, as the top surface of the member 13 and the bottom surface of the member 14 are properly cleaned and the new plate is placed against it. Then with the rivet heads in the openings 18, the edges of the openings are welded to the old plate or member 13 or 14 as the case may be and to the head of the rivet as indicated at 19. This welding is preferably done by electric welding, although not necessarily so, and the weld metal 19 is thoroughly welded to the edges of the openings 18, the surface of the old structure is indicated at 20, and to the head of the rivet, all as clearly shown in Fig. 4, making a uniform structure, and preferably filling up the space between the rivet head and the edges of the openings 18 flush with the top or outer surface of the new member. Then the edges of the new member may be welded to the old member or the edges of the old member to the new member whichever happens to be the proper procedure and as required. A the top of the girder shown in the drawing the new plate 16 is somewhat narrower than the old plate 13, and therefore the edges of the new plate are welded to the surface of the old plate as indicated at 21. At the lower part of the girder the new plate 17 is shown as of greater width than the old plate 14, and therefore here the edges of the old plate 14 are welded to the surface of the new plate 17 as indicated at 22.
Although as above described new plates 16 or 1'7 have been added to the old structure, it will be evident that the invention may be employed in the same manner for applying other strengthening members, such as angles, channels, beams, etc. .It is to be noted that the weld 19 may be applied simultaneously to the old member, the new member and the rivet head, and note is especially to be made of the increased circumferential value of the cross section of the rivet due to this welding. It will also be evident that this method of strengthening may be applied either to old structures which have been deterlorated to bring them up to their normal strength, or it is equally adapted for application to structures which have not deteriorated, but to which it is desired to add a new or additional section to enable it to carry an increased load.
Having thus set forth the nature of my invention, what I claim is:
1. The method of reenforcing structural members including members held together by rivets which comprises providing holes in a new cover plate, having said holes spaced to correspond with the spacing of the rivets and somewhat larger than the rivet heads, placing this plate against the structural member with the rivets in the openings, and welding the edges of the holes to the rivet heads and the old member and also welding the edges of the new plate to the old member.
2. The method of reenforcing structural structures including members held together by rivets which comprises providing a new structural member with openings of a size somewhat larger than the rivet heads and spaced to correspond therewith, placing the new member against one of the old members with the heads of the rivets in said openings, welding the new member in said openings to the old member and the rivet heads, and also welding edges or one of the old members to the new member.
3. A reenforced structure comprising structural members held together by rivets, a reeniorcing member resting against one oi said structural members having openings of somewhat larger diameter than the rivet heads and located with the rivet heads in the openings, welded connections about the edges of the openings securing the reenforcing member to the rivet heads and the old member, and welded connections between edges 01' the reenrorcing member and one of the structural members. 1
ARTHUR G. LEAKE.
US583812A 1931-12-30 1931-12-30 Reenforcing structural member Expired - Lifetime US1954357A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3360845A (en) * 1964-12-11 1968-01-02 Clugston Holdings Ltd Method of repairing and/or reinforcing castings
FR2285200A1 (en) * 1974-09-17 1976-04-16 Paris & Outreau Acieries Joining metal parts, esp. plates - where joint contains holes and molten metal is cast into the holes
US20070194564A1 (en) * 2006-02-17 2007-08-23 Garceau Bernard F Trailer and method of assembly
US20070256389A1 (en) * 2006-05-03 2007-11-08 Davis John D Sheet Metal Web Stiffener And Chord Nailing Restrictor For Wooden I-Joist
US8621797B2 (en) * 2010-07-02 2014-01-07 Yooho Development & Construction Co. Ltd. Steel structure including pre-stressing brackets for improving load-carrying capacity and serviceability
US10443239B2 (en) * 2016-12-02 2019-10-15 Columbia Insurance Company Long span masonry lintel support system
US10480197B2 (en) 2017-04-04 2019-11-19 Columbia Insurance Company Masonry support

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3360845A (en) * 1964-12-11 1968-01-02 Clugston Holdings Ltd Method of repairing and/or reinforcing castings
FR2285200A1 (en) * 1974-09-17 1976-04-16 Paris & Outreau Acieries Joining metal parts, esp. plates - where joint contains holes and molten metal is cast into the holes
US20070194564A1 (en) * 2006-02-17 2007-08-23 Garceau Bernard F Trailer and method of assembly
US20070256389A1 (en) * 2006-05-03 2007-11-08 Davis John D Sheet Metal Web Stiffener And Chord Nailing Restrictor For Wooden I-Joist
US8621797B2 (en) * 2010-07-02 2014-01-07 Yooho Development & Construction Co. Ltd. Steel structure including pre-stressing brackets for improving load-carrying capacity and serviceability
US10443239B2 (en) * 2016-12-02 2019-10-15 Columbia Insurance Company Long span masonry lintel support system
US10480197B2 (en) 2017-04-04 2019-11-19 Columbia Insurance Company Masonry support

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