EP0504500A1 - A connecting stake with a fixing stirrup and with nails to be pneumatically inserted for the connection of a concrete casting on an iron beam - Google Patents

A connecting stake with a fixing stirrup and with nails to be pneumatically inserted for the connection of a concrete casting on an iron beam Download PDF

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Publication number
EP0504500A1
EP0504500A1 EP91200600A EP91200600A EP0504500A1 EP 0504500 A1 EP0504500 A1 EP 0504500A1 EP 91200600 A EP91200600 A EP 91200600A EP 91200600 A EP91200600 A EP 91200600A EP 0504500 A1 EP0504500 A1 EP 0504500A1
Authority
EP
European Patent Office
Prior art keywords
nails
stake
concrete casting
plaque
connection
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
EP91200600A
Other languages
German (de)
French (fr)
Other versions
EP0504500B1 (en
Inventor
Francesco Guazzo
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.)
Tecnaria SpA
Original Assignee
Tecnaria SpA
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 Tecnaria SpA filed Critical Tecnaria SpA
Priority to EP91200600A priority Critical patent/EP0504500B1/en
Priority to AT91200600T priority patent/ATE97183T1/en
Priority to DE69100624T priority patent/DE69100624T2/en
Publication of EP0504500A1 publication Critical patent/EP0504500A1/en
Application granted granted Critical
Publication of EP0504500B1 publication Critical patent/EP0504500B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/17—Floor structures partly formed in situ
    • E04B5/23—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated
    • E04B5/29—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated the prefabricated parts of the beams consisting wholly 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
    • E04C3/29—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
    • E04C3/293—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures the materials being steel and concrete
    • E04C3/294—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures the materials being steel and concrete of concrete combined with a girder-like structure extending laterally outside the element

Definitions

  • the present invention relates to connecting stakes for beams and more specifically to connecting stakes of cylindrical shape which are inserted within the flange of a beam made of steel. More specifically, the present invention provides a connecting stake of cylindrical shape provided in the lower part with a fixing stirrup or predisposed nails capable of being inserted pneumatically within the flange of a steel beam for the purpose of strengthening the connection between the slab made of concrete which is above and the beams made of steel which are disposed beneath the slab.
  • the crux of the present invention resides in the fact that the connecting stake, being initially provided with a fixing stirrup with nails predisposed in the openings of the same stirrup, is mounted on the flange of the beam by means of a pneumatic riveting machine which inserts the nails in the flange of the structural section so that a perfect and stable fixing is achieved, both when the connecting stake is mounted directly on the flange of the beam as well as when it is mounted through the interposition of a plate in a fret shape which supports the casting of the concrete slab placed above it.
  • the connecting stake is constituted by a cylindrical rod (1) provided with a head of enlarged diameter (2) obtained by cold heading and also with a base plaque (3) of rectangular shape with two lateral borders (4) and (5) which rigidify the structure and which are obtained by bending in the cold the steel plate.
  • the fixing of the stake (1) to the base plate (3) is obtained by riveting the lower part of the stake (1) of reduced diameter so as to form a conical portion (6) which ends on the level of the bottom surface of the rod (3).
  • the latter is provided with two orifices (7) and (8) within which the nails (9) and (10) are inserted, the nails being advantageously coated with two thin cylindrical sheaths (11) and (12) which permit to maintain the nails (9) and (10) inserted in them in position for mounting or inserting during storage as well as during the transportation and when the fixing operation is carried out.
  • the fixing operation is obtained by means of a pneumatic nailing machine which acts on the heads of the nails (9) and (10) as shown in Fig. 4 so that the tips of the same nails penetrate within the flange (13) of the beam made of iron on which the stake (1) is intended to be fixed.
  • the object may also be achieved by means of the interposition of the fret shaped plate (14) shown in Fig. 5 when the latter is interposed between the connecting stake (1) and the upper flange of the beam (13).

Abstract

The connecting stake (1) is fixed on the upper flange of the beam (13), possibly by the interposition of a fret shaped plate (14), by means of two nails (9) and (10) by using a pneumatic nailing machine which acts on the heads of the nails so that the tips of the nails penetrate within the beam (13) on which the stake (1) is to be fixed.

Description

  • The present invention relates to connecting stakes for beams and more specifically to connecting stakes of cylindrical shape which are inserted within the flange of a beam made of steel. More specifically, the present invention provides a connecting stake of cylindrical shape provided in the lower part with a fixing stirrup or predisposed nails capable of being inserted pneumatically within the flange of a steel beam for the purpose of strengthening the connection between the slab made of concrete which is above and the beams made of steel which are disposed beneath the slab.
  • It is known for some time that structures made of steel and concrete, particularly for the purpose of manufacturing slabs made of a conglomerate and supported by metallic beams have been used. The stakes mentioned hereinabove actually are simply soldered electrically to the upper surface of the beams made of steel and emerge from them in a manner to remain conglomerated in the concrete bed of the slab.
  • The mounting of these connectors requires an operation of electric soldering to be carried out on the beams already placed in operation, a fact which involves difficulties not always easy to overcome by the operators.
  • The crux of the present invention resides in the fact that the connecting stake, being initially provided with a fixing stirrup with nails predisposed in the openings of the same stirrup, is mounted on the flange of the beam by means of a pneumatic riveting machine which inserts the nails in the flange of the structural section so that a perfect and stable fixing is achieved, both when the connecting stake is mounted directly on the flange of the beam as well as when it is mounted through the interposition of a plate in a fret shape which supports the casting of the concrete slab placed above it.
  • The invention is illustrated by reference to the accompanying drawings of which:
    • Fig. 1 is an elevational view of the connecting stake of the present invention;
    • Fig. 2 is a side view of the same stake;
    • Fig. 3 is an elevational vertical view in cross section of the connecting stake mounted on the flange of a beam in the shape of a double "T" also in vertical cross section;
    • Fig. 4 illustrates the same connecting stake mounted on the flange of a beam in the shape of a double "T";
    • Fig. 5 illustrates the same connecting stake mounted on a beam in the shape of a double "T" with the interposition of a fret shaped plate.
  • As it is shown in Figs. 1, 2 and 3, the connecting stake is constituted by a cylindrical rod (1) provided with a head of enlarged diameter (2) obtained by cold heading and also with a base plaque (3) of rectangular shape with two lateral borders (4) and (5) which rigidify the structure and which are obtained by bending in the cold the steel plate.
  • The fixing of the stake (1) to the base plate (3) is obtained by riveting the lower part of the stake (1) of reduced diameter so as to form a conical portion (6) which ends on the level of the bottom surface of the rod (3). The latter is provided with two orifices (7) and (8) within which the nails (9) and (10) are inserted, the nails being advantageously coated with two thin cylindrical sheaths (11) and (12) which permit to maintain the nails (9) and (10) inserted in them in position for mounting or inserting during storage as well as during the transportation and when the fixing operation is carried out.
  • The fixing operation is obtained by means of a pneumatic nailing machine which acts on the heads of the nails (9) and (10) as shown in Fig. 4 so that the tips of the same nails penetrate within the flange (13) of the beam made of iron on which the stake (1) is intended to be fixed.
  • The object may also be achieved by means of the interposition of the fret shaped plate (14) shown in Fig. 5 when the latter is interposed between the connecting stake (1) and the upper flange of the beam (13).
  • The advantages according to the connecting stake to the present invention are obvious because the fixing operation does not require the use of a soldering machine but only the use of a pneumatic nailing machine is involved by means of which the nails (9) and (10) are placed on the flange of the beam, the nails being predisposed on the base plaque which is advantageously reinforced by the stake.

Claims (3)

  1. A connecting stake with a fixing stirrup and nails to be pneumatically inserted for connection with a concrete casting on an iron beam, characterized by the fact that it comprises a staff (1) of cylindrical section and predetermined length, provided with an upper head (2) of a greater diameter, and with a lower bar of slightly lesser diameter, said lower bar having an end, said stake (1) having a shaped plaque (3) provided with two lateral openings (7) and (8), said plaque having a central opening, said end of said bar being riveted in said central opening, said nails (9) and (10) being predisposed in said lateral openings and being held within said openings by two thin sheaths (11) and (12), said concrete casting having an upper flange, said nails being inserted in said upper flange by means of a pneumatic nailing machine, said concrete casting being subsequently applied on said upper flange.
  2. The stake according to claim 1 wherein said concrete casting is interposed by means of a fret shaped plate (14) which limits said casting.
  3. The stake according to claim 1 characterized by the fact that said plaque (3) is provided with lateral wings (4) and (5) emerging from said plaque, whereby said stake is reinforced.
EP91200600A 1991-03-19 1991-03-19 A connecting stake with a fixing stirrup and with nails to be pneumatically inserted for the connection of a concrete casting on an iron beam Expired - Lifetime EP0504500B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP91200600A EP0504500B1 (en) 1991-03-19 1991-03-19 A connecting stake with a fixing stirrup and with nails to be pneumatically inserted for the connection of a concrete casting on an iron beam
AT91200600T ATE97183T1 (en) 1991-03-19 1991-03-19 CONNECTION DOWEL WITH A FIXING BRACKET AND WITH PNEUMATICALLY INSERTED NAILS FOR CONNECTING THE CONCRETE CASTING TO AN IRON BEAM.
DE69100624T DE69100624T2 (en) 1991-03-19 1991-03-19 Connecting dowels with a fastening bracket and with pneumatically inserted nails for connecting the concrete cast to an iron beam.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP91200600A EP0504500B1 (en) 1991-03-19 1991-03-19 A connecting stake with a fixing stirrup and with nails to be pneumatically inserted for the connection of a concrete casting on an iron beam

Publications (2)

Publication Number Publication Date
EP0504500A1 true EP0504500A1 (en) 1992-09-23
EP0504500B1 EP0504500B1 (en) 1993-11-10

Family

ID=8207558

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91200600A Expired - Lifetime EP0504500B1 (en) 1991-03-19 1991-03-19 A connecting stake with a fixing stirrup and with nails to be pneumatically inserted for the connection of a concrete casting on an iron beam

Country Status (3)

Country Link
EP (1) EP0504500B1 (en)
AT (1) ATE97183T1 (en)
DE (1) DE69100624T2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996021778A1 (en) * 1995-01-11 1996-07-18 Kuettel Richard Connecting element for wood-concrete composite structure
EP0742323A1 (en) * 1995-05-12 1996-11-13 TECNARIA S.p.A Connecting stake with a fixing stirrup with clamps, for the assembly of concrete floors on wooden beams
FR2746828A1 (en) * 1996-04-02 1997-10-03 Spit Soc Prospect Inv Techn CONNECTOR FOR ANCHORING A CONCRETE SLAB ON A METAL SUPPORT
EP1710364A2 (en) * 2005-04-08 2006-10-11 TECNARIA S.p.A Stud-connector for the connection of a concrete casting onto an iron beam
EP1972736A3 (en) * 2007-03-23 2010-06-02 TECNARIA S.p.A Connector for the connection between a metal element and an element made of concrete

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1077852B (en) * 1958-01-11 1960-03-17 Gutehoffnungshuette Sterkrade Composite ceiling made of steel girders and a reinforced concrete layer
FR2033167A5 (en) * 1969-02-28 1970-11-27 Illinois Tool Works
FR2317438A1 (en) * 1975-07-09 1977-02-04 Hilti Ag TIE FOR COMPOSITE CONCRETE BEAMS
WO1989000223A1 (en) * 1987-07-02 1989-01-12 Safferson Limited Shear connectors

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1077852B (en) * 1958-01-11 1960-03-17 Gutehoffnungshuette Sterkrade Composite ceiling made of steel girders and a reinforced concrete layer
FR2033167A5 (en) * 1969-02-28 1970-11-27 Illinois Tool Works
FR2317438A1 (en) * 1975-07-09 1977-02-04 Hilti Ag TIE FOR COMPOSITE CONCRETE BEAMS
WO1989000223A1 (en) * 1987-07-02 1989-01-12 Safferson Limited Shear connectors

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996021778A1 (en) * 1995-01-11 1996-07-18 Kuettel Richard Connecting element for wood-concrete composite structure
EP0742323A1 (en) * 1995-05-12 1996-11-13 TECNARIA S.p.A Connecting stake with a fixing stirrup with clamps, for the assembly of concrete floors on wooden beams
FR2746828A1 (en) * 1996-04-02 1997-10-03 Spit Soc Prospect Inv Techn CONNECTOR FOR ANCHORING A CONCRETE SLAB ON A METAL SUPPORT
EP0799942A1 (en) * 1996-04-02 1997-10-08 Societe De Prospection Et D'inventions Techniques Spit Connection rod for a concrete slab on a metallic support
EP1710364A2 (en) * 2005-04-08 2006-10-11 TECNARIA S.p.A Stud-connector for the connection of a concrete casting onto an iron beam
EP1710364A3 (en) * 2005-04-08 2007-08-08 TECNARIA S.p.A Stud-connector for the connection of a concrete casting onto an iron beam
EP1972736A3 (en) * 2007-03-23 2010-06-02 TECNARIA S.p.A Connector for the connection between a metal element and an element made of concrete

Also Published As

Publication number Publication date
DE69100624D1 (en) 1993-12-16
EP0504500B1 (en) 1993-11-10
ATE97183T1 (en) 1993-11-15
DE69100624T2 (en) 1994-05-19

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