GB2106611A - Joints for connecting structural members - Google Patents

Joints for connecting structural members Download PDF

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Publication number
GB2106611A
GB2106611A GB08227324A GB8227324A GB2106611A GB 2106611 A GB2106611 A GB 2106611A GB 08227324 A GB08227324 A GB 08227324A GB 8227324 A GB8227324 A GB 8227324A GB 2106611 A GB2106611 A GB 2106611A
Authority
GB
United Kingdom
Prior art keywords
joint
plates
projection
cast
structural members
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Withdrawn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
GB08227324A
Inventor
William Joseph Boswell
Stanley Arthur Gaston
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.)
Redpath Dorman Long Ltd
Original Assignee
Redpath Dorman Long Ltd
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 Redpath Dorman Long Ltd filed Critical Redpath Dorman Long Ltd
Priority to GB08227324A priority Critical patent/GB2106611A/en
Publication of GB2106611A publication Critical patent/GB2106611A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F16B5/0004—Joining sheets, plates or panels in abutting relationship
    • F16B5/0032—Joining sheets, plates or panels in abutting relationship by moving the sheets, plates, or panels or the interlocking key parallel to the abutting edge
    • F16B5/0052—Joining sheets, plates or panels in abutting relationship by moving the sheets, plates, or panels or the interlocking key parallel to the abutting edge the interlocking key acting as a dovetail-type key
    • 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
    • E04B2001/2409—Hooks, dovetails or other interlocking connections
    • 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
    • E04B2001/2433—Connection details of the elongated load-supporting parts using a removable key
    • 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
    • E04B2001/2484—Details of floor panels or slabs

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Joining Of Building Structures In Genera (AREA)

Abstract

A joint for connecting structural members comprises two ferrous castings 3, 4, one having an elongate projection 5 whose width diminishes towards its root and the other having a groove 6 which dimensionally complements the projection of the first. On assembly of the castings an interlocking dovetail type joint is formed between structural members integral with the castings. <IMAGE>

Description

SPECIFICATION Joints for connecting structural members This invention relates to joints for connecting structural members. More especially, but not exclusively the invention concerns joints for structural steel or precast concrete members used in the building industry.
According to the present invention there is provided a joint for connecting structural members comprising two ferrous castings, one cast with an elongate projection whose width diminishes towards its root and the other cast with a groove which extends over a part only of the respective dimension of casting and which dimensionally complements the projection of the first casting, to provide on assembly an interlocking joint between structural members integral with the two castings with the closed end of the groove acting as a bearing pad for the projection of the other casting. The structural members may be of metal (e.g. steel) or concrete and typically comprise columns and beams.
Castings may be cast from a spheroidal graphite iron (SG iron); alternatively, the castings may be cast from steel.
Additionally, the projection may be located within the groove by means of keys passing through complementary apertures formed in the two castings.
The invention will not be described by way of example only with reference to the accompanying diagrammatic drawings in which: Figure lisa side elevational view of a joint in accordance with the present invention; Figure 2 is a plan view of the joint illustrated in Figure 1; Figure 3 is a section taken along line Ill-Ill of Figure 1; Figures 4 and 5 are side elevational view of further joints in accordance with the present invention; Figures 6 and 7 are respectively side elevational and plan views of a still further joint in accordance with the invention; Figure 8 is a side elevational view of a joint in accordance with the invention, used to connect a lattice girder to a roof truss; Figure 9 is a side elevational view of a joint in accordance with the invention for connecting precast structural members;; Figures 10 and 11 are side elevational and plan views of further joints used to connect a precast concrete slab member to a steel beam; and Figure 12 is a side elevational view of a joint in accordance with the invention used to connect crane girders to a vertical column.
The joint illustrated in Figures 1, 2 and 3 comprises two interlocking cast plates 1, 2 of SG iron or steel respectively welded or bolted to adjoining surfaces of a horizontal universal beam 3 and a vertical column 4.
The plate 1 is cast with a flared elongate projection 5 whose width diminishes towards the root and the plate 2 with a convergent groove 6 whose dimensions complement those of the projection 5. The groove is open at one end and extends over the major part of the length of the plate 2 the remaining solid part of the plate 2 forming a bearing pad 7 against which one end of the projection 5 abuts.
In use, the plane surfaces of the plates 1,2 are welded or bolted respectively to the beam 3 and column 4. The flared projection 5 of the beam is then introduced into the open end of the groove 6 and slides down the groove until it abuts the bearing pad 7 thereby both joining the column and beam and positively locating one with respect to the other.
The bearing and shear capacity of the joint is improved by means of keys 8 which pass through complementary apertures formed in the cast plates 1,2.
In the assemblies illustrated in Figures 4 and 5, the plates 1,2 are so positioned that the projection 5 slides generally horizontally into and along the groove 6, one or more keys 8 passing generally vertically through complementary apertures formed in the plates to locate the beam with respect to the column. The assembly illustrated in Figure 4 provides a neutral axis connection whilst the use of twin connections as illustrated in Figure 5 provides a moment connection.
Figures 6 and 7 are side elevational and plan views illustrating the use of the joint for connecting adjacent beams or columns. As will be seen from these Figures the plates 1,2 are secured to the adjacent ends of the beams or columns. A bearing pad 7 and key 8 together locate the interlocked members.
Figure 8 shows a typical use of joints in accordance with this invention for lattice girder and roof truss connections. As will be seen from this Figure, plates 1 are welded or bolted to the upper ends of diagonal girders 9 and plates 2 to the underside of a top boom 10. Similar joints are provided between the lower ends of the diagonals 9 and a lower boom.
Figure 9 illustrate the use of a joint for connecting a precast concrete beam 11 to a precast concrete column 12. Rag bolts 13 are welded to the plane surfaces of the plates 1 and 2 to key the plates to the cast beam and column. Assembly of the beam and column follow the procedure described with reference to Figure 1 to 3 above.
In the assemblies illustrated in Figures 10 and 11, plates 1 are keyed by rag bolts 13 into precast concrete slabs 14. These plates are located within the grooves formed in plates 2 welded to the upper surface of the upper flange of a transverse beam 15.
The concrete slabs 14 typically provide a sub4loor in a building structure. The plates 1,2 are locked in position with keys 8.
Figure 12 illustrates the use of a joint in accordance with the invention as a connection between adjacent crane girders 16 and a vertical column 17.
Two plates 1 are welded to the cap of the column and co-operate with plates 2 secured to the undersurface of adjacent crane girders 16. Spacing between the joints and between the girder ends accommodate axial expansion of the girders during use thereof.
1. A joint for connecting structural members
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (7)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Joints for connecting structural members This invention relates to joints for connecting structural members. More especially, but not exclusively the invention concerns joints for structural steel or precast concrete members used in the building industry. According to the present invention there is provided a joint for connecting structural members comprising two ferrous castings, one cast with an elongate projection whose width diminishes towards its root and the other cast with a groove which extends over a part only of the respective dimension of casting and which dimensionally complements the projection of the first casting, to provide on assembly an interlocking joint between structural members integral with the two castings with the closed end of the groove acting as a bearing pad for the projection of the other casting. The structural members may be of metal (e.g. steel) or concrete and typically comprise columns and beams. Castings may be cast from a spheroidal graphite iron (SG iron); alternatively, the castings may be cast from steel. Additionally, the projection may be located within the groove by means of keys passing through complementary apertures formed in the two castings. The invention will not be described by way of example only with reference to the accompanying diagrammatic drawings in which: Figure lisa side elevational view of a joint in accordance with the present invention; Figure 2 is a plan view of the joint illustrated in Figure 1; Figure 3 is a section taken along line Ill-Ill of Figure 1; Figures 4 and 5 are side elevational view of further joints in accordance with the present invention; Figures 6 and 7 are respectively side elevational and plan views of a still further joint in accordance with the invention; Figure 8 is a side elevational view of a joint in accordance with the invention, used to connect a lattice girder to a roof truss; Figure 9 is a side elevational view of a joint in accordance with the invention for connecting precast structural members;; Figures 10 and 11 are side elevational and plan views of further joints used to connect a precast concrete slab member to a steel beam; and Figure 12 is a side elevational view of a joint in accordance with the invention used to connect crane girders to a vertical column. The joint illustrated in Figures 1, 2 and 3 comprises two interlocking cast plates 1, 2 of SG iron or steel respectively welded or bolted to adjoining surfaces of a horizontal universal beam 3 and a vertical column 4. The plate 1 is cast with a flared elongate projection 5 whose width diminishes towards the root and the plate 2 with a convergent groove 6 whose dimensions complement those of the projection 5. The groove is open at one end and extends over the major part of the length of the plate 2 the remaining solid part of the plate 2 forming a bearing pad 7 against which one end of the projection 5 abuts. In use, the plane surfaces of the plates 1,2 are welded or bolted respectively to the beam 3 and column 4. The flared projection 5 of the beam is then introduced into the open end of the groove 6 and slides down the groove until it abuts the bearing pad 7 thereby both joining the column and beam and positively locating one with respect to the other. The bearing and shear capacity of the joint is improved by means of keys 8 which pass through complementary apertures formed in the cast plates 1,2. In the assemblies illustrated in Figures 4 and 5, the plates 1,2 are so positioned that the projection 5 slides generally horizontally into and along the groove 6, one or more keys 8 passing generally vertically through complementary apertures formed in the plates to locate the beam with respect to the column. The assembly illustrated in Figure 4 provides a neutral axis connection whilst the use of twin connections as illustrated in Figure 5 provides a moment connection. Figures 6 and 7 are side elevational and plan views illustrating the use of the joint for connecting adjacent beams or columns. As will be seen from these Figures the plates 1,2 are secured to the adjacent ends of the beams or columns. A bearing pad 7 and key 8 together locate the interlocked members. Figure 8 shows a typical use of joints in accordance with this invention for lattice girder and roof truss connections. As will be seen from this Figure, plates 1 are welded or bolted to the upper ends of diagonal girders 9 and plates 2 to the underside of a top boom 10. Similar joints are provided between the lower ends of the diagonals 9 and a lower boom. Figure 9 illustrate the use of a joint for connecting a precast concrete beam 11 to a precast concrete column 12. Rag bolts 13 are welded to the plane surfaces of the plates 1 and 2 to key the plates to the cast beam and column. Assembly of the beam and column follow the procedure described with reference to Figure 1 to 3 above. In the assemblies illustrated in Figures 10 and 11, plates 1 are keyed by rag bolts 13 into precast concrete slabs 14. These plates are located within the grooves formed in plates 2 welded to the upper surface of the upper flange of a transverse beam 15. The concrete slabs 14 typically provide a sub4loor in a building structure. The plates 1,2 are locked in position with keys 8. Figure 12 illustrates the use of a joint in accordance with the invention as a connection between adjacent crane girders 16 and a vertical column 17. Two plates 1 are welded to the cap of the column and co-operate with plates 2 secured to the undersurface of adjacent crane girders 16. Spacing between the joints and between the girder ends accommodate axial expansion of the girders during use thereof. CLAIMS
1. A joint for connecting structural members comprising two ferrous castings, one cast with an elongate projection whose width diminishes towards its root and the other cast with a groove which extends over a part only of the respective dimension of the casting and which dimensionally complements the projection of the first casting, to provide on assembly an interlocking joint between structural members integral with the two castings, with the closed end of the groove acting as a bearing pad in the projection cast into the other ferrous casting.
2. Ajoint as claimed in Claim 1 wherein the structural members comprise metal columns or beams.
3. A joint as claimed in Claim 1 wherein the structural members comprise concrete columns or beams.
4. Ajoint as claimed in any one of the preceding claims wherein the ferrous castings consist of spheroidal graphite iron or steel.
5. A joint as claimed in any one of the preceding claims wherein the groove cast into one of the castings is open at one or both of its ends.
6. Ajoint as claimed in any one of the preceding claims wherein the elongate projection is locked within the groove by means of keys which pass through complementary apertures formed in the two castings.
7. A joint for connecting structural members substantially as herein described with reference to Figures 1 to 3, Figure 4, Figure 5, Figures 6 and 7, Figure 8, Figure 9, Figures 10 and 11, and Figure 12 of the accompanying drawings.
GB08227324A 1981-09-24 1982-09-24 Joints for connecting structural members Withdrawn GB2106611A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08227324A GB2106611A (en) 1981-09-24 1982-09-24 Joints for connecting structural members

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8128965 1981-09-24
GB08227324A GB2106611A (en) 1981-09-24 1982-09-24 Joints for connecting structural members

Publications (1)

Publication Number Publication Date
GB2106611A true GB2106611A (en) 1983-04-13

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GB08227324A Withdrawn GB2106611A (en) 1981-09-24 1982-09-24 Joints for connecting structural members

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2147969A (en) * 1983-09-13 1985-05-22 Edward George Walton Furniture joints
GB2148446A (en) * 1983-10-20 1985-05-30 Messagegold Limited Jointing strip
WO1992015791A1 (en) * 1991-02-28 1992-09-17 Lehigh University Structural connector approximating a cone of elliptical cross-section
GB2281950A (en) * 1993-09-16 1995-03-22 Peter Herbert Edward Bennett Slide assembly jointing system
AT410462B (en) * 2001-08-17 2003-05-26 Windbichler Georg FASTENING ELEMENT FOR ONE METAL PART
WO2006103033A2 (en) * 2005-04-01 2006-10-05 Induo Gesellschaft Zur Verwertung Von Schutzrechten Mbh & Co. Kg Shear connector for connecting at least two components and system of interconnected components
EP1717452A1 (en) * 2005-04-28 2006-11-02 Udo Vierck Device for connecting two construction elements

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2147969A (en) * 1983-09-13 1985-05-22 Edward George Walton Furniture joints
GB2148446A (en) * 1983-10-20 1985-05-30 Messagegold Limited Jointing strip
WO1992015791A1 (en) * 1991-02-28 1992-09-17 Lehigh University Structural connector approximating a cone of elliptical cross-section
US5244300A (en) * 1991-02-28 1993-09-14 Lehigh University Structural connector approximating a cone of elliptical cross-section
GB2281950A (en) * 1993-09-16 1995-03-22 Peter Herbert Edward Bennett Slide assembly jointing system
AT410462B (en) * 2001-08-17 2003-05-26 Windbichler Georg FASTENING ELEMENT FOR ONE METAL PART
WO2006103033A2 (en) * 2005-04-01 2006-10-05 Induo Gesellschaft Zur Verwertung Von Schutzrechten Mbh & Co. Kg Shear connector for connecting at least two components and system of interconnected components
WO2006103033A3 (en) * 2005-04-01 2006-11-30 Induo Ges Zur Verwertung Von S Shear connector for connecting at least two components and system of interconnected components
EP1717452A1 (en) * 2005-04-28 2006-11-02 Udo Vierck Device for connecting two construction elements

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WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)