EP4339384A1 - Device and method for connecting construction elements - Google Patents

Device and method for connecting construction elements Download PDF

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Publication number
EP4339384A1
EP4339384A1 EP23197802.4A EP23197802A EP4339384A1 EP 4339384 A1 EP4339384 A1 EP 4339384A1 EP 23197802 A EP23197802 A EP 23197802A EP 4339384 A1 EP4339384 A1 EP 4339384A1
Authority
EP
European Patent Office
Prior art keywords
recess
construction
coupling element
connecting piece
insertion direction
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.)
Pending
Application number
EP23197802.4A
Other languages
German (de)
English (en)
French (fr)
Inventor
Dany BOSTEELS
Filip CORDEEL
Floris BOSTEELS
Raf BOSTEELS
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.)
R&f BV
Original Assignee
R&f BV
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 R&f BV filed Critical R&f BV
Publication of EP4339384A1 publication Critical patent/EP4339384A1/en
Pending 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
    • 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
    • E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
    • E04B1/21—Connections specially adapted therefor
    • E04B1/215—Connections specially adapted therefor comprising metallic plates or parts

Definitions

  • the present invention relates to connecting construction elements.
  • Constructions are composed of prefabricated construction elements, also referred to as prefab elements. Such construction elements may be, for example, supporting columns, floor slabs or walls. These construction elements are usually not produced in situ on a building site, but are manufactured elsewhere and delivered to the building site.
  • construction elements are then placed in their desired position and a construction element is connected to one or more other construction elements.
  • Connecting such construction elements to each other comprises the accurate positioning of the construction elements to be connected. Subsequently, a shuttering is provided at the location where a connection is to be made between the construction elements. Subsequently, a fastener, usually concrete, is poured into this shuttering in order to form a connection between the construction elements.
  • connecting construction elements is a time-consuming process.
  • a significant amount of time is required to allow the fastener to cure to a sufficient degree. Consequently, the step of connecting the construction elements takes up a significant part of the total time required to build a construction consisting of construction elements.
  • fitting the shuttering is usually carried out manually, which is likewise time-consuming.
  • a device for connecting a first construction element and a second construction element comprising a first connecting element which is connected to the first construction element and which comprises a connecting piece, and a second connecting element which is connected to the second construction element and which comprises a recess, wherein a transverse dimension of the recess decreases along at least a portion of the length thereof in an insertion direction, wherein the device furthermore comprises a coupling element with a cavity which is configured to accommodate at least a portion of the connecting piece, and wherein the coupling element is configured to be inserted into the recess in the insertion direction up to a secure limit position in which it adjoins the walls of the recess.
  • a transverse dimension of the coupling element decreases along at least a portion of the length thereof in the insertion direction.
  • the coupling element is funnel-shaped.
  • the coupling element is conical.
  • the recess is funnel-shaped.
  • the recess is conical.
  • the recess has the same shape as the coupling element. Inserting a coupling element into a congruent recess ensures form-fitted accommodation of the coupling element in the congruent recess.
  • the coupling element is made of a compressible material. As a result thereof, the coupling element can be pushed into the recess as a result of which the coupling element is securely fixed in the recess.
  • the first connecting element, second connecting element and the coupling element together form a connection.
  • This connection is formed without using a liquid fastener which is intended to form the connection by curing, such as concrete or cement.
  • the connection between the two construction elements can thus be produced much more quickly than when time has to be allowed for a liquid fastener to cure.
  • no additional steps are required, such as the provision of a shuttering, when producing the connection between the construction elements. This saves time as well as material.
  • a transverse dimension of the recess of the second connecting element at right angles to the insertion direction is greater than a transverse dimension of the connecting piece of the first connecting element.
  • the recess has an entry side where the transverse dimension of the recess is greatest, and the recess has an exit side where the transverse dimension is smallest.
  • the connecting piece is preferably configured to be inserted on the exit side in a direction opposite to the insertion direction. In this case, the transverse dimension of the recess is preferably greater on the exit side than the transverse dimension of the connecting piece.
  • the orientation and the position of the first construction element with respect to the second construction element before the final connection is produced therefore does not have to be as accurate as with known connecting techniques.
  • the required orientation and position of the two construction elements with respect to each other is achieved by inserting the coupling element.
  • a transverse dimension of the recess of the second connecting element decreases along at least a portion of the length of the recess in the insertion direction. This makes it possible for the coupling element to be inserted into the recess.
  • the transverse dimension of the recess and the corresponding shape of the coupling element will be described in more detail with reference to the figures. However, it will be clear that many specific shapes are possible without deviating from the fact that the transverse dimension of the recess of the second connecting element decreases along at least a portion of the length of the recess in the insertion direction.
  • the connecting piece is elongate.
  • the connecting piece is rodshaped.
  • the recess and the coupling element are conical, with a conicity of the recess being virtually identical to the conicity of the coupling element.
  • the first connecting element is a rebar.
  • the portion of the rebar which extends beyond the first construction element is the connecting piece.
  • the connecting piece is formed by at least a part of the portion of the rebar which extends beyond the first construction element.
  • the first connecting piece is made of a material which is sufficiently strong to bear the forces exerted on the construction elements.
  • the first connecting element may thus be made of one of the materials wood, metal, plastic or a composite or of a combination of at least two of these materials.
  • the second connecting element is made of one of the materials wood, metal, plastic or a composite or of a combination of at least two of these materials.
  • the first connecting element and the second connecting element may be made of different materials.
  • the first connecting element and the second connecting element are made of the same material.
  • Said transverse dimension may be, for example, the width of a beam-shaped recess.
  • the transverse dimension may be a diameter of a conical recess. It will be clear that not every transverse dimension of the recess has to decrease in order to produce the connection. Thus, in the case of a beam-shaped recess, it may for example suffice if only a width of the beam decreases in order to produce a connection, while a depth of the beam is constant along the length of the recess in the insertion direction.
  • the device may also comprise one or more insertion bodies.
  • the coupling element as described above may be configured not to fill the recess completely after the coupling element has been inserted into the recess of the second connecting element, and to leave at least one insertion space free between the coupling element and the walls of the recess after the coupling element has been inserted into the recess, so that one or more insertion bodies can be inserted into every insertion space.
  • the coupling element itself may be configured to accommodate at least one insertion body, for example due to the fact that the coupling element comprises at least one insertion cavity which is configured to accommodate at least one insertion body.
  • An advantage of the one or more insertion bodies is that the construction elements can be connected to each other with different degrees of freedom of movement.
  • the coupling element may be configured in such a way that the second construction element still has a limited first degree of freedom of movement with respect to the first construction element after these have been connected to each other by the coupling element.
  • This is advantageous, for example, when installing a floor slab on supporting columns.
  • an additional insertion body may then be inserted into one or more of the connections in the insertion space(s) provided for this purpose between the walls of the recess and the coupling element or insertion cavity/cavities in the coupling element in order to connect the construction elements to each other with a second degree of freedom of movement which is more limited than the first.
  • the recess preferably comprises a first open end which functions as an entry opening via which the coupling element may be inserted into the recess in the insertion direction, and a second open end which functions as an exit opening.
  • the connecting piece is preferably inserted into the recess via the exit opening.
  • the exit opening in this case has transverse dimensions which are greater than the transverse dimensions of the connecting piece so that the connecting piece can be inserted with play.
  • the coupling element may be configured to accommodate the connecting piece in a form-fitted manner and/or the recess may be configured to accommodate the coupling element in a form-fitted manner.
  • the coupling element preferably has a conical external shape. Due to the fact that the connecting piece is accommodated in the coupling element in a form-fitted manner, and the coupling element is accommodated in the second connecting element in a form-fitted manner, a secure connection is produced. This secure connection does not require any additional connection steps.
  • the coupling element and the recess may have similar transverse dimensions which decrease in the insertion direction.
  • the coupling element may be configured to be completely accommodated in the recess of the second connecting element. Additionally or alternatively, the transverse dimension of the recess may decrease along the entire length of the recess. In this case, the exit opening will have the smallest transverse dimension.
  • the shape of the recess as described herein makes it possible for the coupling element to be inserted into the recess only in the insertion direction. This makes it easier to connect two construction elements and prevents a construction element from being connected with an incorrect orientation as a result of a (human) error.
  • connection is reversible, so that the connected construction elements can be detached again from each other.
  • constructions in particular largescale constructions, such as blocks of flats or office buildings, may be provided in which the connections between the construction elements are dismantlable.
  • the construction elements can be re-used after a construction has been dismantled. Until now, this has not been done, since it is not advantageous from a financial and practical point of view to separate construction elements which have been connected to each other using a cured fastener, such as concrete.
  • connecting piece and the cavity of the coupling element may be cylindrical. Additionally, the recess of the second connecting element and the coupling element may be substantially conical.
  • the coupling element may furthermore comprise a point of attachment.
  • the point of attachment may be provided in order to attach a tool to the coupling element. The tool can then be used to remove the coupling element from the recess of the second connecting element. This has the advantage that the connection can easily be detached again.
  • the point of attachment may be, for example, an attachment cavity with an internal screw thread. It is then possible to fit, for example, a bolt in the attachment cavity, after which a pulley puller can exert a tensile force on the coupling element via the bolt.
  • each of the one or more insertion bodies may also comprise an attachment cavity.
  • only part of the coupling element and the one or more insertion bodies may comprise a point of attachment.
  • the reason for this is that when one of the coupling elements is removed, it will be easier to remove the remaining coupling elements from the recess. This facilitates circular use of the construction elements, as the connection between the construction elements according to the invention can easily be detached by means of the point of attachment.
  • the connecting piece may be a tie, reinforcing rod or bar anchor. Reinforcing rods or bar anchors are already in frequent use nowadays.
  • Such connecting elements are already being fitted during production of the construction element.
  • the connecting element may also be fitted after production of the construction element, for example by means of a mechanical connection, such as screwing or gluing.
  • the device according to the invention is mainly aimed at connecting concrete construction elements.
  • the device is also suitable for connecting construction elements made of other materials, for example wood, brick or a composite of building materials.
  • a first and/or the second connecting element may already have been provided before the concrete construction element is being poured.
  • one of the construction elements may comprise two or more connecting elements.
  • a square floor slab may comprise a connecting element near every corner by means of which the square floor slab can be connected to four supporting pillars, each of which comprise a connecting element.
  • each supporting pillar would comprise a first connecting element and the square floor slab comprises four second connecting elements.
  • a supporting column may comprise a first connecting element at one end and comprise a second connecting element at another end, so that a multitude of supporting columns can be connected to each other according to the invention.
  • a supporting column may comprise a multitude of connecting elements at the same end, in which case a multitude of floor slabs or floor slab elements can be connected to the supporting column according to the invention.
  • first and the second construction element may be concrete construction elements.
  • first and the second construction element may be made of reinforced concrete.
  • one or both of the first and the second construction elements may be made of wood, metal, plastic or a composite.
  • the coupling element may be made of a material suitable for absorbing vibrations and/or shocks.
  • the coupling element may be made of a material suitable for absorbing acoustic vibrations and/or mechanical shocks.
  • the acoustic properties of the construction may be improved and/or the behaviour of the construction in case of geological phenomena such as earthquakes or resonance phenomena, for example in case of persistent wind, may be improved.
  • the insertion bodies may be made of a material having a lower compressibility than the material of the coupling element.
  • the relatively more compressible coupling element may impart a first degree of freedom of movement to the construction elements, this first degree of freedom of movement being limited to a second degree of freedom of movement when the relatively less compressible insertion body is being inserted.
  • the coupling element may consist of a multitude of elements which together form the coupling element.
  • the coupling element may, for example, consist of a multitude of rings of increasing diameter. In this case, the rings are then arranged over the connecting piece in order of increasing diameter.
  • a method for connecting construction elements comprising the steps of providing a first construction element comprising a first connecting element which comprises a connecting piece and a second construction element comprising a second connecting element which comprises a recess, a transverse dimension of which decreases along at least a portion of the length thereof in an insertion direction, providing a coupling element with a cavity which is configured to accommodate at least a portion of the connecting piece, and configured to be inserted into the recess in the insertion direction up to a secure limit position in which it adjoins the walls of the recess, positioning the first construction element and the second construction element in such a way with respect to each other that the connecting piece at least partially extends in the recess of the second connecting element, inserting the coupling element in an insertion direction in such a way that at least a portion of the connecting piece is accommodated in the cavity of the coupling element and in such a way that the coupling element is at least partially accommodated in the recess of the second connecting element, and reaches said
  • Fig. 1 shows a perspective illustration of the device (1) according to the invention.
  • Fig. 1 shows a first construction element (2), here a concrete supporting column (2), with a first connecting element (3), here a cylindrical rebar (3) and a second construction element (4), here a concrete floor element (4) with a second connecting element (5).
  • the second connecting element (5) is composed of a beam-shaped portion which comprises a recess (7) and two upright edges by means of which the connecting element (5) is connected to the concrete floor element (4).
  • the second connecting element (5) is made of metal.
  • the second connecting element (5) has already been fitted to the floor element (4) before the floor element (4) is poured.
  • the second connecting element (5) may be placed, for example, in the mould for pouring the floor element (4).
  • the connecting elements (3, 5) may be connected to the construction elements in various ways which will be clear to those skilled in the art.
  • the connecting elements (3, 5) may already have been present when the supporting column (2) and the floor element (4) were being poured.
  • the connecting elements (3, 5) may be connected mechanically to the supporting column and the floor element.
  • Fig. 1 shows a coupling element (6), in this case referred to as plug (6).
  • the second connecting element (5) comprises a recess (7) with a transverse dimension (D) at right angles to an insertion direction (A).
  • the transverse dimension (D) gradually decreases in the insertion direction (A) and along the entire length of the recess (7).
  • the free space in the recess (7) virtually corresponds to the external shape of the plug (6).
  • the plug (6) can be inserted into the recess (7) in the insertion direction (A).
  • both the plug (6) and the recess (7) are in the shape of a truncated cone, a portion of which is cut along a section which runs parallel to the longitudinal axis of the cone.
  • Plug (6) comprises a cavity (8) configured to accommodate a connecting piece (10) of the first connecting element (3).
  • the cavity (8) is cylindrical, and a diameter of the cavity (8) is equal to that of the rebar (3).
  • the cavity (8) is configured to accommodate the rebar (3).
  • connection between the supporting column (2) and the floor element (4) can thus be produced much more quickly than is the case when having to wait for a liquid fastener to cure. Furthermore, there are no additional steps required. This provides a saving in terms of both time and material. A method for producing the connection is described with reference to Fig. 3 .
  • Fig. 2 shows a perspective illustration of the device (1) according to the invention.
  • the connecting piece (10) of the rebar (3) is accommodated in the cavity (8) of the plug (6), and the plug (6) is accommodated in the recess (7) of the second connecting element (5) of the concrete floor element (4).
  • a connection is produced between the supporting column (2) and the floor element (4).
  • Producing the connection is explained in more detail with reference to Figs. 3A - 3D .
  • the connection can be dismantled via a point of attachment (9) of the plug (6).
  • a tool may be connected to the point of attachment (9) by means of which the plug (6) may be pulled out of the recess (7) counter to the insertion direction (A). In this way, the connection may be detached again.
  • Detaching is performed without causing any damage to the components involved. This is in contrast with known connecting techniques, where the connection is produced by curing a binding agent, such as concrete. Detaching such a connection requires the concrete poured to produce the connection to be broken away in an accurate manner. This is virtually impossible without damaging the actual construction elements, as a result of which these are rarely re-usable, if at all. However, no structural alterations are required in order to detach the connection produced by the device according to the invention and the concrete supporting column (2), the concrete floor element (4) as well as the plug (6) can be re-used.
  • Figs. 3A, 3B, 3C and 3D show different steps of a method for producing a connection according to the invention.
  • Fig. 3A shows a diagrammatic cross section of a first construction element (2), here a concrete supporting column (2) comprising a first connecting element (3) with a connecting piece (10).
  • the first connecting element (3) here is a cylindrical element, such as for example a rebar.
  • the supporting column (2) may already have been placed in its final position and/or may already have been connected to other construction elements. Alternatively, the supporting column (2) is not yet in its final position. In this case, two or more construction elements may first be connected to each other before being fixed in their final position.
  • Fig. 3B shows a second connecting element (5) connected to a second construction element (4) (not shown here), wherein the connecting element (5) is approximately positioned with respect to the first construction element (2) and the rebar (3). Due to the fact that the transverse dimension (D), here the diameter (D), is greater than a transverse dimension (E), here a diameter (E) of the connecting piece (10) of the rebar (3), along the entire length of the second connecting element (5), there is then a certain degree of play when positioning the second connecting element (5) with respect to the connecting piece (10) of the rebar (3). Furthermore, the recess (7) does not have to have a closed circumference. Thus, the second connecting element (5) in Figs.
  • FIG. 1 and 2 shows that the recess (7) has an open side, more particularly in such a way that the rebar (3) can be inserted via this open side into the recess (7).
  • the second connecting element (5) can be brought into the position illustrated in Fig. 3B in various ways.
  • Figs. 3C and 3D show how the plug (6) is pushed partially and completely, respectively, into the recess (7) along the insertion direction (A), accommodating the rebar (3) in the cavity (8) of the plug (6) in the process. Due to the fact that the shape of the cavity (8) corresponds to the connecting piece (10) of the rebar (3) and due to the fact that the shape of the plug (6) corresponds to the recess (7) of the second connecting element (5), the second connecting element (5) is moved to its position by inserting the plug (6) into the recess (7) along the insertion direction (A) as it were.
  • Figs. 4A, 4B , 4C, and 4D show a transverse dimension of different embodiments of the recess (7) of the second connecting element (5).
  • the shape of the plug (6) corresponds to the shape of the free space in the recess (7), in such a way that this plug (6) can partially or completely be accommodated in the recess (7).
  • Fig. 4A shows the recess (7) as has already been illustrated in Figs. 1 , 2 , 3A, 3B, 3C, and 3D .
  • the diameter (D) of the recess (7) gradually decreases along the entire length of the recess (7) in the insertion direction (A).
  • Fig. 4B shows another embodiment of the recess (7) of the second connecting element (5).
  • the diameter (D) is initially constant for a portion of the length of the recess (7), but then gradually decreases in the insertion direction (A).
  • Fig. 4C shows another embodiment of the recess (7) of the second connecting element (5).
  • the recess (7) comprises two portions along which the diameter (D) remains constant, alternated with two portions along which the diameter (D) gradually decreases.
  • Fig. 4D shows another embodiment of the recess (7) of the second connecting element (5).
  • the transverse dimension (D) decreases exponentially in the direction of the insertion direction (A).
  • the smallest diameter (D) here is furthermore approximately identical to a transverse dimension of the connecting piece (10) of the rebar (3).
  • Fig. 5 shows a diagrammatic illustration of a device according to the invention in which three construction elements (2, 4A, 4B) are connected to each other.
  • two construction elements (2, 4B) may be a concrete supporting column and the third construction element (4A) may be a concrete floor element.
  • One of the concrete supporting columns (2) is provided with a rebar (3) which is sufficiently long to extend in such a way that both a first connecting piece (10A) and a second connecting piece (10B) are formed on the rebar (3).
  • the first connecting piece (10A) is accommodated by a second connecting element (5A) of the concrete floor element (4A).
  • the second connecting piece (10B) is accommodated by a second connecting element (5B) of the other concrete supporting column (4B).

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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)
EP23197802.4A 2022-09-16 2023-09-15 Device and method for connecting construction elements Pending EP4339384A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE20225739A BE1030886B1 (nl) 2022-09-16 2022-09-16 Inrichting en werkwijze voor het verbinden van constructie-elementen

Publications (1)

Publication Number Publication Date
EP4339384A1 true EP4339384A1 (en) 2024-03-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP23197802.4A Pending EP4339384A1 (en) 2022-09-16 2023-09-15 Device and method for connecting construction elements

Country Status (2)

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EP (1) EP4339384A1 (nl)
BE (1) BE1030886B1 (nl)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2793407A (en) * 1953-05-01 1957-05-28 Johnston James William Interlocking dovetailed connectors
WO2007034192A1 (en) * 2005-09-26 2007-03-29 Timberfix Limited Coupling with interengageable profiles for coupling a beam to a post
US10738463B2 (en) * 2014-09-30 2020-08-11 Philip Glen Miller Self-bracing, two-way moment frame precast system for industrial support structure and method of utilizing same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2793407A (en) * 1953-05-01 1957-05-28 Johnston James William Interlocking dovetailed connectors
WO2007034192A1 (en) * 2005-09-26 2007-03-29 Timberfix Limited Coupling with interengageable profiles for coupling a beam to a post
US10738463B2 (en) * 2014-09-30 2020-08-11 Philip Glen Miller Self-bracing, two-way moment frame precast system for industrial support structure and method of utilizing same

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Publication number Publication date
BE1030886A1 (nl) 2024-04-10
BE1030886B1 (nl) 2024-04-16

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