EP0051270B1 - Liaison de plusieurs poutres en bois reposant les unes sur les autres à leurs extrémités - Google Patents

Liaison de plusieurs poutres en bois reposant les unes sur les autres à leurs extrémités Download PDF

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Publication number
EP0051270B1
EP0051270B1 EP81109123A EP81109123A EP0051270B1 EP 0051270 B1 EP0051270 B1 EP 0051270B1 EP 81109123 A EP81109123 A EP 81109123A EP 81109123 A EP81109123 A EP 81109123A EP 0051270 B1 EP0051270 B1 EP 0051270B1
Authority
EP
European Patent Office
Prior art keywords
web
girders
combination
accordance
recess
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
Application number
EP81109123A
Other languages
German (de)
English (en)
Other versions
EP0051270A3 (en
EP0051270A2 (fr
Inventor
Manfred Dipl.-Ing. Steidle-Sailer
Matthias Andres
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.)
Emil Steidle GmbH and Co KG
Original Assignee
Emil Steidle GmbH and Co KG
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 Emil Steidle GmbH and Co KG filed Critical Emil Steidle GmbH and Co KG
Priority to AT81109123T priority Critical patent/ATE8918T1/de
Publication of EP0051270A2 publication Critical patent/EP0051270A2/fr
Publication of EP0051270A3 publication Critical patent/EP0051270A3/de
Application granted granted Critical
Publication of EP0051270B1 publication Critical patent/EP0051270B1/fr
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
    • E04G17/14—Bracing or strutting arrangements for formwalls; Devices for aligning forms
    • 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
    • E04C3/12—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of wood, e.g. with reinforcements, with tensioning members
    • E04C3/16—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of wood, e.g. with reinforcements, with tensioning members with apertured web, e.g. trusses
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
    • E04G17/02—Connecting or fastening means for non-metallic forming or stiffening elements
    • 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
    • Y10T403/00—Joints and connections
    • Y10T403/51—Joints and connections including spaced, diverse connections

Definitions

  • the invention relates to a connection of wooden beams in a raised form on the end face.
  • Such wooden girders are used in particular in the form of lattice girders, to a large extent as formwork girders and here again in particular in connection with formwork elements which consist of large-area formwork panels which are supported on the back by several parallel steel belts on which a plurality of wooden lattice girders parallel to one another is anchored, which give the formwork panel the required rigidity.
  • formwork elements which consist of large-area formwork panels which are supported on the back by several parallel steel belts on which a plurality of wooden lattice girders parallel to one another is anchored, which give the formwork panel the required rigidity.
  • These large-area formwork elements are very popular due to their light weight, nailability and the possibility of easy cleaning. Problems arise because of the need to have panels of different sizes available. This requirement also applies in particular to wall formwork, since the modern design often provides for different storey heights, which necessitates a change in the height of the formwork elements.
  • the wooden lattice girders that can be used for such formwork elements are supplied in various lengths, for example from 2.50 m to 6 m in ten different lengths. This means that a large assortment of carriers must be kept ready in order to have the required lengths available.
  • the tendons are designed as double wedges which can be driven into dovetail grooves in the end plates of the beams.
  • These wedges have the disadvantage that they loosen and fall out as a result of vibrations or vibrations. Such stresses can occur during the shaking movements carried out after the concrete is filled in, or also during the transport of the carriers.
  • the wedge engagement surfaces are very small and due to the formation of the double wedges there is a risk that the inclined surfaces forming the abutments will be pressed apart due to the wedge effect, which leads to a loosening of the end connection.
  • inevitable wear results in inaccuracies in fit, which lead to tolerances and preclude a secure connection.
  • the invention is therefore based on the object of providing a carrier connection which enables any increase and is insensitive to vibrations and vibrations and can transmit large forces without the risk of buckling.
  • the invention makes it possible to produce spiked girders of different lengths, the flexural strength of which at the abutment points is large enough to be able to place and pick up formwork panels carried by them with the crane without fear of breakage or deformation.
  • the final reinforcement which is formed by the solid wall web, results in a high strength in the support area, and it also enables secure anchoring of the tie rods offset to the fitting recesses, which prevents buckling with high lateral force transmission with certainty.
  • the profile adapters can each be guided over a beam width in such a way that slight lateral displacements of the beams, which can occur during formwork operation, can be accommodated.
  • the adapters can engage on cross members that are supported on the back of the full-strength webs. Instead, the tendons can also be anchored in recesses in the full-wall webs using suitable abutments.
  • the wooden girder is designed in particular as a lattice girder, the belt struts in pairs resulting in a knot division and the half knot division corresponding to a grid which forms a unit length from which girders with lengths can be produced have integer multiples of these field lengths.
  • extension elements are further provided which can be placed and braced on a carrier end instead of extension carriers, the length of such an extension element corresponding in height to a carrier being equal to a field length.
  • the wooden girder is designed as a lattice girder with an upper chord 10, lower chord 12 and struts 14 which are glued into grooves in the upper and lower chord.
  • solid wall supports could also be used, which are provided with corresponding recesses for the abutments of the tension rods.
  • the lattice girder is designed as a grid girder, i. H. the fields formed by the inclined webs (14) have a length in the longitudinal direction of the carrier of 32 cm with a carrier height of 36 cm and a belt width of approximately 10 cm.
  • the last field at the two ends of the girder has, as end reinforcement, a solid wall web 16 which, as can be seen in FIGS.
  • This solid wall flange 16 is also finger-jointed Upper and lower belt connected, it can also have the same width as the belts. It can consist of two or more pieces of solid wood or be glued to boards. According to the exemplary embodiment according to FIG. 5, an intermediate space can be left between two web sections if, for example, solid wood pieces with standard sizes with a cross section of 7. 14 cm are used (this center distance then results from the selected grid division).
  • a fitting recess 18 is provided on the end face in the full wall web 16, which is triangular in the embodiment according to FIG. 1, semicircular in the embodiment according to FIG. 2 and in the embodiment according to FIG. 5 by a recess of the entire full wall web.
  • Profile fitting pieces 20 are inserted into the fitting recesses of two wooden supports which are added on the end face and which serve to transmit the transverse force.
  • the preferred embodiment of the profile fitting 20 can be seen in FIG. 10. This training is used for carriers according to FIGS. 1 to 2, 7 to 8, 9 and 14.
  • This profile fitting 20 consists of a tube 22 with a square cross section, at the ends of which tabs 24 are welded, with which the fitting pieces, as can be seen in FIG. 9, can be fastened by means of nails to the full-wall web 16 of one of the supports stacked on the end face.
  • the profile adapter 20a (FIG. 11) consists of a tubular section 26 of circular cross section, which fits into semicircular profile recesses 18 according to FIG. 3.
  • the profile adapter 20b which can be used in the carrier formation according to FIG. 5, can be seen from FIGS. 12, 13 and 15.
  • the profile adapter is designed as a multi-layer adapter plate, the height of which corresponds to the web height and the width of which is somewhat larger than the width of the belts (FIG.
  • the solid wall web 16 of the final reinforcement can protrude on one side of the carrier by the amount of the fitting recess at the other end of the carrier, but this has the disadvantage that the carriers can only be increased in a certain orientation.
  • Tensioning rods are provided for stocking up the beams, which brace the stocked beams against one another at the end.
  • U-shaped bars 28 are supported as abutments on the rear side of the solid wall web 16 forming the final reinforcement.
  • This profile is adjacent to the longitudinal axis of the beam through holes Iron 28 guided a tension rod in the form of a spindle 30, which by means of spindle nuts 32 causes a bracing of two U-profile irons 28, which are normally supported on the solid wall webs of two adjacent wooden lattice girders, the spindle 30 being located in the middle between these carriers.
  • a spindle 30 with spindle nuts 32 between each of the supports In special cases in which only a single wooden lattice girder is to be added, two spindles, one on each side of the girder, must be provided in order to ensure a central clamping of the added girders.
  • this spindle bracing the supports are pressed against each other at the end faces and automatic centering and absorption of transverse forces takes place via the profile fittings, so that the placement of formwork panels or the like, which are supported by the lattice girders arranged parallel to one another, is possible without the panels themselves to collapse.
  • profile fittings which absorb the transverse force are made from metallic pipe pieces in accordance with the exemplary embodiment according to FIGS. 10 and 11. Instead, appropriately machined wooden profile fittings could be used.
  • an extension element 34 is clamped onto the end of a wooden lattice girder in the manner shown in FIGS. 7 to 9.
  • Such an extension element 34 which has the length of a grid (for example 32 cm), is used when the height by which the support is to be added does not justify the use of a second lattice support.
  • any desired heights can be detected with the aid of these girders and corresponding extension elements, which serve as compensating pieces, which is particularly useful when formwork is used for buildings that have very different storey heights.
  • the extension elements 34 are designed as solid wall girders with the corresponding length, the width of these elements corresponding to the belt width.
  • the cross members 28 are not required.
  • the full-wall web 16 forming the end reinforcement has a central circular recess 36 and into this a bore 38 leads in the longitudinal axis of the beam, which passes through the full-wall web 16 in the middle and continues in the profile fitting 20b.
  • a tension rod 42 is guided, on which a pressure shell 44 designed as a cast part is placed within the recess 36, which can be seen in FIG. 16 in detail and which with its cylindrical wall on the wall of the Central extension 36 fits snugly.
  • a wedge supports 46 from which is wrapped in a slot of the pull rod 42, J m to ensure a tension.
  • a wing nut could also be screwed onto the threaded pull rod 42.
  • the extension element 34 is provided at the rear end with a recess 35 into which the cross-beam 28, which is designed here as a double-U profile, protrudes so that this cross-beam does not protrude beyond the end face of the formwork beam or the formwork element.
  • lattice girders are used, in which double webs 16a set back towards the ends are arranged, between which a gap 48 remains.
  • the fitting 20c shown in FIG. 19 consists of a T-shaped metal plate 50 which carries fitting shells 54 welded onto the ends 52 of its transverse leg, which fit the upper or lower flange 10 or 12 and the end face of the double webs 16a and thus the Ensure shear force transmission.
  • the vertical leg 56 of the T-plate 50 which converges towards the lower end, carries reinforcing plates 58 and thus fits into the gap 48 between the double struts 16a.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Pallets (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Joining Of Building Structures In Genera (AREA)

Claims (10)

1. Liaison de plusieurs poutrelles en bois sous forme de poutrelles en treillis ou de poutrelles à âme pleine, empilées frontalement, les côtés frontaux des poutrelles étant munis d'évidements d'assemblage (18) dans lesquels peuvent être mises en place des cales d'assemblage profilées(20) servant à transmettre les forces transversales, des éléments de serrage (30; 42) agissant dans le sens longitudinal de la poutrelle s'appliquant sur l'entretoise par des butées (28, 44) et serrant frontalement l'une par rapport à l'autre deux poutrelles empilées, caractérisé par le fait que les éléments de serrage sont réalisés sous la forme de barres de traction (30; 42) qui s'appliquent chacune avec leurs butées (28, 44) sur une surface d'appui de l'entretoise qui est formée par le bord d'un évidement tourné vers le côté frontal de la poutrelle opposé à l'évidement d'assemblage dans le sens longitudinal de la poutrelle.
2. Liaison selon la revendication 1, caractérisée par le fait que sur les cales profilées d'assemblage (20) réalisées sous forme de manchons tubulaires sont prévus des moyens de fixation (24) pour un appui sur l'entretoise (16).
3. Liaison selon les revendications 1 et 2, caractérisée par le fait que les cales profilées d'assemblage (20) font suffisamment saillie en sens transversal pour qu'une transmission de force transversale soit assurée même lorsque les poutrelles sont empilées avec un décalage.
4. Liaison selon la revendication 1, caractérisée par le fait que les butées sont formées de traverses transversales (28) sous forme de fers profilés qui s'appuient sur le côté arrière d'entretoises à âme pleine (16), qui constituent les renforts d'extrémité des entretoises et que les barres de traction (30) s'étendent parallèlement aux poutrelles à côté de celles-ci.
5. Liaison selon la revendication 4, caractérisée par le fait qu'avec plusieurs poutrelles en bois disposées parallèlement les unes aux autres, par exemple dans un panneau de coffrage, les traverses transversales (28) s'appuient sur les entretoises à âme pleine (16) formant les renforts d'extrémité de plusieurs poutrelles en treillis et les barres de traction (30) sont disposées au milieu entre deux poutrelles.
6. Liaison selon l'une des revendications 1 à 5, caractérisée par le fait qu'il est prévu un élément d'empilage (34) qui est adapté en hauteur et en section à la section d'extrémité de la poutrelle et présente un évidement d'assemblage (18) et que la longueur de l'élément d'empilage correspond à la moitié de la distance jambe de force-noeud d'une poutrelle en treillis.
7. Liaison selon la revendication 6, caractérisée par le fait que l'élément d'empilage (34) est muni à son extrémité arrière d'un évidement (35) pour la traverse transversale (28).
8. Liaison selon la revendication 1, caractérisée par le fait que chaque barre de traction (42) traverse un trou (38) formé en sens longitudinal de la poutrelle dans l'entretoise à âme pleine (16) formant le renfort d'extrémité, que l'entretoise à âme pleine de renfort d'extrémité (16) présente un évidement central (36) dans lequel peut être mise en place une butée sous forme de tronçon cylindrique circulaire formant coquille de pression (44), qui est susceptible d'être serrée sur la barre de traction (38) par une clavette (46).
9. Liaison selon la revendication 1, caractérisée par le fait que l'évidement d'assemblage est formé par des membrures supérieure et inférieure (10, 12) ainsi que par le côté frontal d'une entretoise à paroi, inversée, (16a) et que la cale d'assemblage profilée (20c) présente une plaque d'entretoise (50) qui porte à ses extrémités (52) des coquilles d'assemblage (54) qui s'appliquent sur les membrures et les entretoises à paroi (16a) (fig. 17 à 19).
10. Liaison selon la revendication 9, caractérisée par le fait que l'entretoise de paroi est réalisée sous la forme d'une entretoise à double paroi (16a) et que la cale d'assemblage présente au moins un talon (56,58) qui s'adapte dans la fente (48) de l'entretoise à double paroi et que le talon est formé par une aile (56) de la plaque d'entretoise en forme de T (50).
EP81109123A 1980-11-03 1981-10-28 Liaison de plusieurs poutres en bois reposant les unes sur les autres à leurs extrémités Expired EP0051270B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81109123T ATE8918T1 (de) 1980-11-03 1981-10-28 Verbindung mehrerer holztraeger in stirnseitig aufgestockter form.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19803041370 DE3041370A1 (de) 1980-11-03 1980-11-03 Holztraeger mit einem verstaerkungsvollwandsteg an den traegerenden
DE3041370 1980-11-03

Publications (3)

Publication Number Publication Date
EP0051270A2 EP0051270A2 (fr) 1982-05-12
EP0051270A3 EP0051270A3 (en) 1982-10-27
EP0051270B1 true EP0051270B1 (fr) 1984-08-08

Family

ID=6115846

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81109123A Expired EP0051270B1 (fr) 1980-11-03 1981-10-28 Liaison de plusieurs poutres en bois reposant les unes sur les autres à leurs extrémités

Country Status (5)

Country Link
US (1) US4525974A (fr)
EP (1) EP0051270B1 (fr)
AT (1) ATE8918T1 (fr)
BR (1) BR8107067A (fr)
DE (2) DE3041370A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4013073A1 (de) * 1990-04-25 1991-10-31 Huennebeck Roero Gmbh Verbindungsvorrichtung fuer schaltafeln

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US4957272A (en) * 1989-06-23 1990-09-18 Lee Yuan Ho Modular concrete form
DE4019109A1 (de) * 1990-06-15 1991-12-19 Schweers Hans Gerd Dipl Ing Holzkonstruktion, insbesondere fuer das dach eines wintergartens
US5761872A (en) * 1993-04-21 1998-06-09 Sanford; Emmett Barry Variable length truss and method for producing the same
US5560177A (en) * 1996-03-04 1996-10-01 Brightwell; Lionel L. Trimmable open web joist
US5819489A (en) * 1996-06-11 1998-10-13 Mckinney; John W. Pre-formed building studs and construction form system
US5867963A (en) * 1997-09-23 1999-02-09 Truswal Systems Corporation Trimmable truss apparatus
US6158189A (en) * 1999-04-01 2000-12-12 Alpa Roof Trusses Inc. Wooden I-beam and wooden structural beam and bridging assembly
FR2821129B1 (fr) * 2001-02-22 2003-05-16 Eads Airbus Sa Dispositif d'assemblage d'un panneau et d'une structure, apte a transmettre des efforts importants
ES2244253B1 (es) * 2002-06-19 2006-11-01 Julio Angel Barba Castro Sistema de estructuras armadas ligeras para encofrar, apuntalar, andamiar o similar.
ATE417170T1 (de) * 2004-02-20 2008-12-15 Castro Julio Angel Barba Verstärkte gestelle für schalung, verbau, gerüstbau und dergleichen
US20050279051A1 (en) * 2004-06-21 2005-12-22 Mitek Holdings, Inc. Structural wall framework
WO2008070709A2 (fr) * 2006-12-06 2008-06-12 Georgia-Pacific Wood Products Llc Poutre en i ayant des ouvertures formées à l'intérieur pour un accès mécanique
DE102017102372B3 (de) 2017-02-07 2018-05-30 Stahl Cranesystems Gmbh Vorrichtung mit einem Träger in Segmentbauweise und Verfahren
DE202020101369U1 (de) 2020-03-12 2020-03-27 NEQ CRANES GmbH Balkenkran aus einem Holzwerkstoff

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4013073A1 (de) * 1990-04-25 1991-10-31 Huennebeck Roero Gmbh Verbindungsvorrichtung fuer schaltafeln

Also Published As

Publication number Publication date
ATE8918T1 (de) 1984-08-15
DE3041370A1 (de) 1982-06-09
EP0051270A3 (en) 1982-10-27
EP0051270A2 (fr) 1982-05-12
US4525974A (en) 1985-07-02
BR8107067A (pt) 1982-07-20
DE3165433D1 (en) 1984-09-13

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