EP2944733A1 - Joint d'angle pour une structure en rondins et procédé de fabrication d'un joint en coin de la structure en rondins - Google Patents

Joint d'angle pour une structure en rondins et procédé de fabrication d'un joint en coin de la structure en rondins Download PDF

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Publication number
EP2944733A1
EP2944733A1 EP15167134.4A EP15167134A EP2944733A1 EP 2944733 A1 EP2944733 A1 EP 2944733A1 EP 15167134 A EP15167134 A EP 15167134A EP 2944733 A1 EP2944733 A1 EP 2944733A1
Authority
EP
European Patent Office
Prior art keywords
log
logs
corner joint
intersection line
corner
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
EP15167134.4A
Other languages
German (de)
English (en)
Other versions
EP2944733B1 (fr
Inventor
Harri Vainionpää
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.)
Primapoli Ltd Oy
Original Assignee
Primapoli Ltd Oy
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 Primapoli Ltd Oy filed Critical Primapoli Ltd Oy
Publication of EP2944733A1 publication Critical patent/EP2944733A1/fr
Application granted granted Critical
Publication of EP2944733B1 publication Critical patent/EP2944733B1/fr
Not-in-force legal-status Critical Current
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
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/56—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
    • E04B2/70—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of wood
    • E04B2/701—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of wood with integrated supporting and obturation function
    • E04B2/702—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of wood with integrated supporting and obturation function with longitudinal horizontal elements
    • 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
    • E04B1/02—Structures consisting primarily of load-supporting, block-shaped, or slab-shaped elements
    • E04B1/10—Structures consisting primarily of load-supporting, block-shaped, or slab-shaped elements the elements consisting of wood
    • 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
    • E04B1/26—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of wood
    • E04B1/2604—Connections specially adapted therefor
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/02—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls built-up from layers of building elements
    • E04B2/04—Walls having neither cavities between, nor in, the solid elements
    • E04B2/06—Walls having neither cavities between, nor in, the solid elements using elements having specially-designed means for stabilising the position
    • E04B2/08—Walls having neither cavities between, nor in, the solid elements using elements having specially-designed means for stabilising the position by interlocking of projections or inserts with indentations, e.g. of tongues, grooves, dovetails
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/56—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
    • E04B2/70—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of wood
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/02—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls built-up from layers of building elements
    • E04B2002/0202—Details of connections
    • E04B2002/0232—Undercut connections, e.g. using undercut tongues and grooves
    • E04B2002/0234—Angular dovetails

Definitions

  • the invention relates to a corner joint for a log structure, in each log layer of which the ends of the logs to be joined end-to-end at an angle difference define a common intersection line, and locking cuts, the profiles of which correspond to each other in shape, deviating from the intersection line are machined in the ends.
  • the invention also relates to a method for making a log structure's corner joint.
  • Finnish utility model number 3865 discloses a so-called city-corner, which lacks the protruding parts characteristic of a traditional log structure.
  • the logs to be joined to each other are on the same level.
  • the corner joint is formed of locking cuts formed in the logs set end-to-end, the profiles of which are shaped to essentially correspond to each other.
  • the log structure can then the designed freely, using, among other things, various angle values for the corner joint.
  • the ends of the logs to be joined together are mitred according to their common intersection line and locking cuts are formed in the evened ends of both logs.
  • the logs dry and at the same time shrink, so that a vertical gap can form between the logs.
  • the detriment is mainly aesthetic, it also affects the tightness of the corner joint.
  • a cover board is generally recommended, especially in a re-entrant corner.
  • the invention is intended to create a new type of corner joint for a log structure, which is tighter than before, without detrimental gaps caused mainly by drying.
  • the characteristic features of the corner joint according to the invention are stated in the accompanying Claim 1.
  • the invention is intended to create a new type of method for forming a corner joint in a log structure, by means of which the corner joint is made tighter and more durable than previously.
  • the characteristic features of the method according to the invention are stated in the accompanying Claim 11.
  • locking cuts are formed in the end surfaces of the logs.
  • the finished re-entrant corner of the log structure is tight and neat, without an ever enlarging gap, despite the drying of the logs.
  • the figures show various embodiments of the corner joint.
  • the ends 12 and 13 of the logs 10 and 11 to be joined end-to-end at an angle difference in the log structure define a common intersection line 14.
  • the intersection line is shown by a line of dots and dashes, but for reasons of clarity only in some of the figures.
  • one corner joint of one log layer is examined at a time. The same structure in principle is repeated in each corner joint of each log layer.
  • locking cuts 15 and 16 deviating from the intersection line 14, the profiles of which correspond to each other in shape, are machined in the ends 12 and 13 of the logs 10 and 11.
  • a so-called dovetail joint is used.
  • one log 10 includes a protrusion 18 extending outwards from the intersection line, to which a corresponding recess 19 is in the other log 11.
  • the log with the recess defines the edge of the gap, the gap caused by shrinkage remaining behind the edge.
  • the edge creates a shadow-strip effect, which keeps the outwardly visible gap unchanged and with an even edge.
  • the protrusion 18 and recess 19 of the invention are formed in the log structure in the horizontal cross-section of each log 10 and 11, extending over the full height of each log 10 and 11.
  • the re-entrant corner will then be unified and even in appearance.
  • the vertical gap in the re-entrant corner will remain the same, despite the settling of the logs.
  • the protrusion 18 and recess 19 define, together with the intersection line 14, a right-angled triangle.
  • the shapings then become sufficiently steep for the gap caused by shrinkage to be certain to remain hidden.
  • the shapings are easy to machine using a simple tool.
  • the triangles are shown by broken lines. In all the figures, the logs have been machined ready for installation.
  • the city corner is generally formed in massive laminated logs, the width of which can be as much as 300 mm.
  • the hidden gap according to the invention can be achieved already with very small shapings.
  • the dimension 20 in the line of intersection 14 of the protrusion 18 and the recess 19 is 10 - 30 mm, preferably 15 - 25 mm ( Figure 7 ). More generally, the said dimension is 5 - 10 % of the thickness of the log.
  • the shapings are small, but sufficient.
  • the massiveness of the log permits shapings easily without material waste.
  • the machining includes an additional stage, the costs of which, compared to the advantages gained, are, however, infinitesimal.
  • the logs and the shapings made in them are in real scale relative to each other.
  • the city corner according to the invention is suitable for diverse building.
  • the angle between the logs 10 and 11 lying end-to-end is 60° - 170°.
  • a difference of angle between the logs of 120° - 10° is possible.
  • the figures show a corner joint according to the invention formed of two logs 10 and 11 in their real dimensions. The same reference numbers are used for functionally similar components.
  • the logs 10 and 11 are shown separated, in order to illustrate the corner joints and the locking cuts 15 and 16 ( Figures 2 , 3 , and 5 ).
  • the locking cuts 15 and 16 are formed in the log structure in the horizontal cross-section of each log 10 and 11 to extend over the full height of each log 10 and 11.
  • the locking cuts 15 and 16 are located in different log layers on the same vertical line, so that the same profile extends over the full height of the corner joint.
  • the log structure can thus be assembled differing from the normal manner, from the top down.
  • the structure permits the logs to be joined to be set steplessly at different levels in the height direction. The strength of the corner joint is thus independent of the mutual differences in the height of installation of the logs being joined.
  • the locking cuts 15 and 16 are arranged in the end surfaces of the logs 10 and 11 to be joined together end-to-end at a corner angle, as shown in Figure 3 , for example.
  • the portion of waste material in the machine stage is then small.
  • the end surface of the logs 10 and 11, in addition to the cut surfaces of the locking cuts 15 and 16 are set essentially end-to-end.
  • the corner joint is tight and tidy, without the ends or end surfaces of the logs being visible at all. This prevents the end of the logs from becoming wet and thus softening.
  • the appearance of the entire log structure is smooth and corner boards are not necessarily needed at all.
  • the end surfaces of the logs to be joined are preferably bevelled in such a way that the angle between the end surfaces on a vertical plane of the log and the perpendicular segment against the longitudinal axis of an imaginary log to the terminal point of the log on the inside of the corner is half of the angular deflection of the corner.
  • the logs set end-to-end are then in principle bevelled to an equally small extent, which reduces the loss of raw material.
  • the logs' common intersection line is formed.
  • locking cuts 15 and 16 are machined in the logs 10 and 11.
  • the locking cuts 15 and 16 have preferably dovetail profiles, which protrude from the intersection line 14.
  • a dovetail profile 21 in one log and a corresponding dovetail groove 22 in the other there is a dovetail profile 21 in one log and a corresponding dovetail groove 22 in the other.
  • Sufficient strength is achieved in the corner joint by means of the dovetail joint.
  • a dovetail joint is relatively simple to make.
  • a dovetail joint has also been shown to only tighten when the logs shrink as they dry. Due to its advantageousness, the embodiments concentrate on precisely dovetail joints.
  • a flexible seal is preferably placed in the dovetail joint during erection.
  • the locking cuts can have a different shape too, but variation complicates the machining of the locking cuts.
  • the dovetail profile is made to be symmetrical.
  • the dovetail profiles are machined in a different work stage to the evening of the log's ends.
  • the locking cuts can then be made freely at the desired location and at the same time many logs of different width can be machined using the same machine tool.
  • by means of asymmetrical shaping of the locking cuts the strength of the corner joint can be increased in a desired direction.
  • vertical sealing grooves can also be machined in the log, into which sealing strip can be installed for the whole height of the log corner (not shown).
  • the corner joint described it is thus possible to form corners with a different angle in log structures.
  • the logs are joined at angles of 60° - 170°.
  • all those corners can be formed in one and the same way according to the invention.
  • the angle range is even greater.
  • the corner can be implemented in such a way that the logs overlap regularly at different heights in a traditional manner. Each log is then attached to two opposite logs.
  • logs of the same height can be set at the same height.
  • Such a corner joint is as durable as the previous one, but is easier to make. This is because the layers of logs of both walls bordering the corner can be started from the foundation with full-height logs.
  • logs of different height can be used mixed in the same wall in the corner joint.
  • the figures show two example models of a corner joint according to the invention applied to a laminated log.
  • the angle differences of the joined logs are 45° and 90°, which are common in log structures.
  • the margins, tongues, or similar machined in the logs do not interfere with the making of the locking joints or the formation of the corner joint.
  • the size of the locking cuts depends on the dimensions of the log.
  • the desired strength is created in the corner joint by dimensioning the locking cuts to be sufficient.
  • the dimensioning of the locking cuts then becomes a normal strength calculation.
  • enlarging the cutting angles and lengthening the dovetail profile reduces the transverse surface area of the dovetail profile.
  • the depth of the profiles of the locking cuts is 8% - 12% of the width of the end surfaces, when a suitable strength will be achieved with the smallest amount possible of waste material.
  • the invention also relates to a method for making a corner joint in a log structure.
  • the ends 12 and 13 of the logs 10 and 11 to be joined end-to-end at an angle difference are machined according to a common intersection line 14.
  • locking cuts 15 and 16 the profiles of which are arranged to correspond to each other in shape, and which differ from the intersection line 14, are machined in the ends 12 and 13.
  • a protrusion 18 is formed extending outwards form the intersection line 14, a recess 19 corresponding to which being formed in the other log 11.
  • the protrusion then goes into the recess, so that the edge of the recess defines a visible boundary.
  • the location of the edge may alter, without, however, enlarging the visible gap.
  • Figure 7 shows in principle the machining of the logs.
  • the ends 12, 13 are levelled using the same tool 23 as was used to machine the protrusion 18 and the recess 19. More specifically, first of all the protrusion and recess are machined, after which the ends of the logs are levelled. In the method, the aforementioned definitions of the protrusion and recess are used.
  • first the protrusion 18 is formed, after which using the same tool the end of the log is levelled with several movements of the tool 23.
  • the tool is preferably a rectangular milling cutter.
  • Figure 7 does not show the machining reservation demanded by the protrusion, which is, however, only a few millimetres.
  • the tool 23 has been used to machine the protrusion 18 or recess 19, the end 12 and 13 of each log is levelled according to the intersection line 14.
  • the locking cuts 15 and 16 are then machined after the protrusion 18 and recess 19 and the levelling of the ends 12 and 13 of the logs 10 and 11.
  • the locking cuts can thus be machined at the desired location.
  • a precise shape is thus given to the locking cut at one time.
  • the tools 23 and 24 are shown schematically and, for reasons of clarity, smaller than their real size.
  • the tool 23 can have a diameter of, for example 120 mm, in which case the protrusion and recess are machined with the every edge part of the tool. When machining the log end, the full width of the tool can then be exploited.
  • the log corner and method according to the invention it is possible to manufacture very different kinds of corner, without the durability of the corner joint suffering, or the number of work stages increasing.
  • many kinds of raw material can be utilized.
  • savings can be made in building costs.
  • the corner joint can be widely varied, which increases freedom in the planning and design of log structures and buildings.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Load-Bearing And Curtain Walls (AREA)
EP15167134.4A 2014-05-12 2015-05-11 Joint d'angle pour une structure en rondins et procédé de fabrication d'un joint en coin de la structure en rondins Not-in-force EP2944733B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20145429A FI126282B (fi) 2014-05-12 2014-05-12 Hirsirakenteen nurkkaliitos ja menetelmä hirsirakenteen nurkkaliitoksen muodostamiseksi

Publications (2)

Publication Number Publication Date
EP2944733A1 true EP2944733A1 (fr) 2015-11-18
EP2944733B1 EP2944733B1 (fr) 2017-03-01

Family

ID=53397781

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15167134.4A Not-in-force EP2944733B1 (fr) 2014-05-12 2015-05-11 Joint d'angle pour une structure en rondins et procédé de fabrication d'un joint en coin de la structure en rondins

Country Status (2)

Country Link
EP (1) EP2944733B1 (fr)
FI (1) FI126282B (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI3865U1 (fi) 1998-12-14 1999-03-18 Primapoli Ltd Oy Hirsirakenteen nurkkaliitos
CA2234732A1 (fr) * 1998-04-14 1999-10-14 Konrad Uwe Maiterth Systeme d'assemblage de pieces de construction de murs
FR2917105A1 (fr) * 2007-06-05 2008-12-12 Marc Simon Degorre Jeu de madriers pour constructions de murs en bois.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2234732A1 (fr) * 1998-04-14 1999-10-14 Konrad Uwe Maiterth Systeme d'assemblage de pieces de construction de murs
FI3865U1 (fi) 1998-12-14 1999-03-18 Primapoli Ltd Oy Hirsirakenteen nurkkaliitos
FR2917105A1 (fr) * 2007-06-05 2008-12-12 Marc Simon Degorre Jeu de madriers pour constructions de murs en bois.

Also Published As

Publication number Publication date
EP2944733B1 (fr) 2017-03-01
FI20145429A (fi) 2015-11-13
FI126282B (fi) 2016-09-15

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