EP0476638B1 - Verfahren zum Verbinden von Holzteilen und Verbindung von Holzteilen - Google Patents

Verfahren zum Verbinden von Holzteilen und Verbindung von Holzteilen Download PDF

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Publication number
EP0476638B1
EP0476638B1 EP91115915A EP91115915A EP0476638B1 EP 0476638 B1 EP0476638 B1 EP 0476638B1 EP 91115915 A EP91115915 A EP 91115915A EP 91115915 A EP91115915 A EP 91115915A EP 0476638 B1 EP0476638 B1 EP 0476638B1
Authority
EP
European Patent Office
Prior art keywords
beams
spindle
face
ring
hole
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 - Lifetime
Application number
EP91115915A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0476638A3 (en
EP0476638A2 (de
Inventor
Jens Dethloff
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0476638A2 publication Critical patent/EP0476638A2/de
Publication of EP0476638A3 publication Critical patent/EP0476638A3/de
Application granted granted Critical
Publication of EP0476638B1 publication Critical patent/EP0476638B1/de
Anticipated expiration legal-status Critical
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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
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38—Connections for building structures in general
    • E04B1/48—Dowels, i.e. members adapted to penetrate the surfaces of two parts and to take the shear stresses

Definitions

  • the invention relates to a method for connecting wooden beams, in particular for fastening a first beam made of wood, for example a glulam body, to a second beam perpendicular to the first beam in such a way that the first beam rests with the end face of its brain end on the second beam and both Beams are fastened to each other by a screw connection element and the screw connection element is glued in a bore in the end face of the first beam in the fiber direction by means of synthetic resin, and a ring for reinforcing the brain side is introduced.
  • the invention also relates to a connection of wooden beams produced by the method.
  • two beams are screwed together by means of a spindle passing through both beams, and for this purpose a hole is preferably made in each beam with a superimposed countersunk hole at the beginning, both holes being aligned with one another in the connecting position of the beams.
  • the two beams are pulled firmly against each other and clamped together using nuts that are screwed onto both spindle ends and tightened. Therefore, high frictional forces arise at the contact surfaces, which counteract a displacement of the two beams in the connection plane.
  • a ring is introduced into the contact surfaces of the beams in the connection plane, which concentrically surrounds the spindle at a distance from it and supports the resistance of the connection against shear forces.
  • this method can only be used for connecting beams in which the spindle completely passes through the beams, so that nuts can be screwed onto the spindle ends on both sides to clamp the beams.
  • the method is therefore only used where there are intersecting beams or those with their ends against each other beams to be fastened are to be connected.
  • the holes extend across the grain of the beams.
  • connection method can be carried out with very simple means, and it permits extensive prefabrication in the production plant or in the workshop with subsequent assembly on the construction site.
  • the essence of the method according to the invention is, on the one hand, that a threaded spindle or threaded rod made of metal is introduced into the bore in the direction of the fiber in the brain end of a wooden body in order to introduce an individual load such that with a bore diameter which is larger than that of the spindle, the adhesive creates an absolutely firm connection with the bore wall and a positive connection is established with the thread, so that in this way tensile forces introduced via the spindle are evenly transmitted to the layers of the wooden part adjacent to the bore.
  • the arrangement of the ring with a rhombic cross-section in the connection plane in each of the ring grooves filled with epoxy resin enables the ring to be easily inserted and securely fastened, and the bars to be precisely assigned to one another, so that, on the one hand, the wood body in the region of the brain end is prevented from splitting and the shear strength of the connection is increased and, on the other hand, simple and exact assembly is guaranteed even under construction site conditions.
  • the ring prevents the wooden body from splitting in the area of the brain end near the face or connecting surface, where the splitting tensile forces have their maximum. If the ring also engages in the contact surface of the second beam, it additionally brings about a substantial increase in the shear strength of the connection in a similar manner to the known connection mentioned at the outset, which, however, is based on the two wooden parts being pressed together between the ends of a spindle. Experiments have already shown that a significant increase in the load capacities can be achieved with the connection method according to the invention.
  • the method according to the invention can also be applied to the known connecting method mentioned at the outset, in which the wooden parts are screwed to one another or to one another between the spindle ends, and - are pressed if these are beams with a crossing fiber direction and the first beam through which the spindle extends in the direction of the fibers, is also suitable for a continuous spindle in terms of length. Because also in this case, pressing the brain end of the first beam against the contact surface of the second beam results in splitting tensile forces, which are counteracted in the form of a ring with the transverse tensile reinforcement according to the invention can be, if necessary, on both brain ends of the first bar.
  • the bore in the first beam, in which the spindle is glued, is preferably carried out as a blind bore, which is consequently independent of the respective beam length.
  • the ring should preferably be arranged concentrically to the spindle in order to form a uniformly effective reinforcement.
  • the diameter of the ring is to be dimensioned such that the wood core enclosed by the ring covers the area relevant for the strength of the connection and the splitting tensile forces acting beyond the ring cannot destroy the wood part under load.
  • the ring is inserted into an annular groove in the end face of the first beam and glued in with epoxy resin. In this way, a positive connection between the ring and the surrounding layers of wood is brought about, so that a effective reinforcement is achieved.
  • the ring is introduced with one half in the annular groove of the first beam and with the other half in an annular groove which is milled into the contact surface of the second beam concentrically with the bore. This significantly increases the shear strength of the connection. Prefabrication is also easily possible for this.
  • the ring is preferably made of metal with a cross-sectional profile in the form of a rhombus. As a result, the ring can in any case be easily inserted, if necessary also driven in, and it has the strongest cross section in the connecting plane of the two wooden parts.
  • the other half of the ring in the ring groove of the second beam can also be glued there in a form-fitting manner by means of epoxy resin in order to avoid the highest possible resistance to any displacement in the event of shear stresses.
  • the free end of the spindle section is expediently arranged in the second bar by means of a counterbore. In this way, an invisible connection consisting exclusively of internal connecting elements is achieved if the counterbore is closed after the connection has been made.
  • the invention also relates to a connection of wooden parts which can be produced by the above-mentioned and described method, specifically with the further training options shown above.
  • a central bore 5 is made as a blind bore through the end face 3 of the beam 1 in the end of the brain.
  • a steel and threaded spindle 6 is inserted and glued with epoxy resin 7 in the manner shown, so that an end portion 8 of the spindle 6 protrudes far beyond the end face 3.
  • annular groove 9 is milled in a coaxial position at a significant distance from the bore 5 in the end face 3.
  • an aluminum ring 10 with an approximately rhombic cross section is glued in such a way by means of epoxy resin 11 that one half of the ring is positively embedded and fastened in the annular groove 9, while the other half protrudes beyond the end face 3.
  • a continuous bore 12 is passed through the beam 2 and is suitable for receiving the end section 12 of the spindle 6.
  • the bore 12 On the side of the bar 2 facing away from the contact surface 4, the bore 12 overlaid by a counterbore 13, as shown.
  • an annular groove 14 is milled out concentrically to the bore 12, which corresponds to the aforementioned annular groove 9.
  • the annular groove 14 is provided with an epoxy resin filling 15 and the beam 2 is placed with its contact surface 4 on the end face 3 of the beam 1 so that the end portion 8 of the spindle 6 passes through the bore 12 and from which End face 3 protruding half of the ring 10 penetrates into the ring groove 14 filled with epoxy resin.
  • a pressure ring 16 and a locking ring 17 are placed on the free end of the spindle 6, and a nut 18 is screwed on and tightened until a tension sufficient for the desired connection is reached.
  • the epoxy resin filling 15 hardens, and the desired tensile, shear and pressure-resistant connection of the beams 1, 2 is achieved.
  • the two beams 1, 2 connected to one another have mutually crossing fiber directions and the bore receiving the spindle runs in the fiber direction of the first beam 1. Nevertheless, the spindle can withstand high tensile loads without the split tensile forces leading to a transverse tensile break.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
EP91115915A 1990-09-20 1991-09-19 Verfahren zum Verbinden von Holzteilen und Verbindung von Holzteilen Expired - Lifetime EP0476638B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4029726 1990-09-20
DE4029726A DE4029726A1 (de) 1990-09-20 1990-09-20 Verfahren zum verbinden von holzteilen und verbindung von holzteilen

Publications (3)

Publication Number Publication Date
EP0476638A2 EP0476638A2 (de) 1992-03-25
EP0476638A3 EP0476638A3 (en) 1992-05-27
EP0476638B1 true EP0476638B1 (de) 1995-04-26

Family

ID=6414570

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91115915A Expired - Lifetime EP0476638B1 (de) 1990-09-20 1991-09-19 Verfahren zum Verbinden von Holzteilen und Verbindung von Holzteilen

Country Status (4)

Country Link
EP (1) EP0476638B1 (da)
AT (1) ATE121810T1 (da)
DE (2) DE4029726A1 (da)
DK (1) DK0476638T3 (da)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022212861A1 (en) * 2021-04-01 2022-10-06 Simpson Strong-Tie Company, Inc. System for filling voids in glued-in-rod structures

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT399838B (de) * 1993-07-20 1995-07-25 Wirglauer Gottfried Holzverbindung zum stumpfen stossen zweier holzbalken
US6389767B1 (en) 2000-01-06 2002-05-21 Zone Four, Llc Shear wall construction
DE20001250U1 (de) * 2000-01-25 2001-05-31 Sfs Industrie Holding Ag, Heerbrugg Befestigungselement zur Verbindung von aneinander anliegenden oder aneinander anstoßenden Holzprofilen
DE20001249U1 (de) * 2000-01-25 2001-05-31 Sfs Industrie Holding Ag, Heerbrugg Verbindung von aneinander anliegenden oder aneinander anstoßenden Holzprofilen
NL1028126C2 (nl) * 2005-01-26 2006-07-27 Venster Techniek B V Werkwijze voor het aan elkaar koppelen van een houten kozijnstijl en een onderdorpel.
CZ302525B6 (cs) * 2010-05-07 2011-06-29 Ceské vysoké ucení technické v Praze, Fakulta stavební Rozebiratelný polotuhý prípoj nebo spoj drevených prutu nosné prutové konstrukce

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2378550A (en) * 1943-04-02 1945-06-19 Frederic R Harris Connector ring groove centering device
DE2220201A1 (de) * 1972-04-25 1973-11-08 Rudolf Wolter Holzverbindung
US4484430A (en) * 1981-08-10 1984-11-27 Wendell E. Rossman Connector for a structural member
DE3634039A1 (de) * 1986-10-06 1988-04-14 Peter Bertsche Verbinderkoerper fuer den holzbau

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022212861A1 (en) * 2021-04-01 2022-10-06 Simpson Strong-Tie Company, Inc. System for filling voids in glued-in-rod structures

Also Published As

Publication number Publication date
DE4029726A1 (de) 1992-03-26
EP0476638A3 (en) 1992-05-27
DK0476638T3 (da) 1995-10-02
EP0476638A2 (de) 1992-03-25
ATE121810T1 (de) 1995-05-15
DE59105305D1 (de) 1995-06-01

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