EP3070222A1 - Fertigbauelement und herstellungsverfahren eines solchen fertigbauelements - Google Patents

Fertigbauelement und herstellungsverfahren eines solchen fertigbauelements Download PDF

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Publication number
EP3070222A1
EP3070222A1 EP16160937.5A EP16160937A EP3070222A1 EP 3070222 A1 EP3070222 A1 EP 3070222A1 EP 16160937 A EP16160937 A EP 16160937A EP 3070222 A1 EP3070222 A1 EP 3070222A1
Authority
EP
European Patent Office
Prior art keywords
concrete
main unit
unit
block
thermal insulation
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
EP16160937.5A
Other languages
English (en)
French (fr)
Other versions
EP3070222B1 (de
Inventor
Jean-Paul Py
Yuraima Benoit
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.)
KP1 SAS
Original Assignee
KP1 SAS
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
Priority claimed from FR1552193A external-priority patent/FR3033810B1/fr
Priority claimed from FR1552191A external-priority patent/FR3033809B1/fr
Application filed by KP1 SAS filed Critical KP1 SAS
Publication of EP3070222A1 publication Critical patent/EP3070222A1/de
Application granted granted Critical
Publication of EP3070222B1 publication Critical patent/EP3070222B1/de
Active 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
    • 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
    • E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
    • 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
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
    • E04B2001/7679—Means preventing cold bridging at the junction of an exterior wall with an interior wall or a floor
    • 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
    • E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
    • E04B2005/322—Floor structures wholly cast in situ with or without form units or reinforcements with permanent forms for the floor edges

Definitions

  • the present invention relates to building and construction and more particularly to a prefabricated building element such as a beam or a pre-slab.
  • the invention also relates to a method of manufacturing such a construction element.
  • thermal bridges that is to say that of the path of conduction of heat or cold by the continuity of a calorie-conducting material from the outside of the building to the interior. This is particularly the case for floors that form thermal bridges because of their contact with the exterior walls of the building.
  • pre-slabs each comprising a concrete body and at least two fastening bases anchored inside the concrete body and separated from each other by a predefined distance.
  • Each predalle further comprises reinforcements anchored in the corresponding concrete body so as to extend between two consecutive attachment bases.
  • An operator therefore arranges the slabs along a wall and then inserts a block of thermally insulating material in each mounting base.
  • the frames protruding into the building interior are coated so as to be secured to the floor.
  • the frames protruding the other side of the thermally insulating body are then embedded in an external concrete element continuing the construction of the wall. In this way, the floor and the wall are linked and the thermally insulating material blocks arranged between them, via the bases, limit the corresponding thermal bridges.
  • Such layers are for example described in the patent FR 2 861 767 .
  • An object of the invention is to provide a prefabricated building element that allows more efficient handling of thermal bridges including, although not exclusively, between a wall and a floor.
  • An object of the invention is also to provide a method of manufacturing such a construction element.
  • the subject of the invention is a prefabricated building element comprising a concrete body and at least one main thermal insulation unit joined to the concrete body, the main unit being arranged to protrude from an upper face of the concrete body.
  • the prefabricated building element comprises at least one secondary thermal insulation and structural support unit comprising a specific concrete block having a reduced thermal conductivity of less than 1 watt per meter Kelvin and reinforcements arranged in said block, the block extending contiguous to the main unit so that said main unit is anchored in said specific concrete block.
  • the construction element according to the invention makes it possible to ensure a continuity of the thermal insulation along the entire construction element with an alternation of main thermal insulation zones at the level of the main units and secondary thermal insulation zones at the level of the secondary units. This makes it much easier to deal with thermal bridge problems.
  • the building element of the invention is a predalle, thus ensures a continuity of the thermal insulation of the floor over the entire length of the wall / floor link which limits the thermal bridge wall / floor.
  • the secondary units fulfill both a thermal protection function thanks to the specific concrete block, and both a structural support function thanks to the reinforcements but also to the specific concrete block.
  • the main unit directly serves as a portion of formwork for the manufacture of the secondary unit which simplifies the manufacture of the building element.
  • the main unit thus directly serves as a portion of formwork for the manufacture of the secondary unit which simplifies the manufacture of the building element.
  • the terms “superior”, “lower” ... must be understood according to an operating position of the construction element that is to say once the construction element has been placed on a building under construction (eg when the building element is a slab, the position in service is when the slab is mounted at the portion of the associated wall).
  • the construction element according to the first embodiment of the invention is a pre-slab 1 which therefore aims to treat the thermal bridges between a floor 2 and an adjacent wall 3 audit floor 2.
  • the predalle 1 comprises a concrete body 4 for example of prestressed concrete comprising prestressing cables oriented longitudinally and parallel to each other.
  • the pre-slab 1 furthermore comprises here main units 5 of thermal insulation.
  • the main units 5 are all secured to the concrete body 4 being here anchored therein. More specifically, the main units 5 are here anchored in the concrete body 4 being separated from each other by a predefined distance.
  • the main units 5 are arranged to protrude from the upper face of the concrete body 4.
  • the main units 5 are shaped so as to extend substantially at least over the entire height of the floor 1. to reduce the thermal bridges between the floor 2 and the adjacent wall.
  • the main units 5 are arranged at the same longitudinal edge 6 of the predalle 1 but with an offset vis-à-vis the longitudinal edge 6. In this way, the main units 5 are here completely coated in the concrete body 4 which ensures good solidarity of the main units 5 to the concrete body 4.
  • the different main units 5 all extend parallel to said longitudinal edge 6 in the same direction X.
  • the main units 5 are shaped so that the upper faces of the main units 5 are substantially at the height of the upper face of the compression slab 14 to be cast on the predalle 1 as we shall see later.
  • the main units 5 of the predalle 1 are all identical to each other and are all separated in pairs by the same distance. Two successive main units 5 therefore define between they have a space at the longitudinal edge 6.
  • Each main unit 5 here comprises a base 10 shaped as an open container, for example of the flower box type.
  • Each base 10 is for example plastic.
  • each base 10 comprises a finger (not visible here) arranged on one of the outer lateral faces of said base 10 and extending longitudinally towards the outside of the base 10, the finger being shaped to define the constant interval between two consecutive bases 10.
  • each main unit 5 comprises a block of thermally insulating material 7 which is received in the corresponding base 10.
  • Each block 7 is for example nested in the corresponding base 10.
  • the block 7 thus has a substantially parallelepipedal shape corresponding to that of the base 10.
  • Each block 7 is for example mineral wool.
  • the base 10 includes holding means of the block 7 associated in the base 10.
  • the retaining means comprise for example indentations provided in at least two of the inner faces of the base 10 and protruding inwards of the base 10.
  • Each main unit 5 (formed in the present case of a base 10 and a block of thermally insulating material 7) thus forms a thermal breaker for treating the thermal bridge between the floor 2 and the wall 3 as we will see by the following.
  • the predalle 1 here comprises secondary units 8 of thermal insulation.
  • Each secondary unit 8 is here a specific concrete block having a reduced thermal conductivity of less than 1 watt per meter Kelvin.
  • the specific concrete of each secondary unit 8 is a concrete with a thermal conductivity lower than 0.6 watts per meter-Kelvin, which further reinforces the treatment of thermal bridges by said secondary unit 8.
  • Thermedia concrete is used as concrete (trademark registered by Lafarge).
  • Each secondary unit 8 is arranged between two successive main units 5 of the predalle 1 so as to extend in the direction X.
  • Each secondary unit 8 is anchored in the concrete body 4. In this way, the predalle 1 has parallel to its longitudinal edge 6 a continuous alternation of a main unit 5 and a secondary unit 8.
  • the secondary units 8 of thermal insulation are arranged so as to coat the two respective main units 5 surrounding them. Each main unit 5 is thus anchored at its two outer lateral faces in two successive secondary units 8.
  • the secondary units 8 are arranged to protrude from the upper face of the concrete body 4.
  • the secondary units 8 are shaped so as to extend substantially further over the entire height of the predalle 1 (this is that is, to the underside of the concrete body 4). This thus makes it possible to reduce the thermal bridges between the floor 2 and the adjacent wall.
  • the secondary units 8 are arranged so as to exceed the same height of the upper face of the concrete body 4 as the main units 5.
  • the secondary units 8 are here shaped so that their upper faces are substantially up to the upper face of the compression slab 14 to be cast on the predalle 1 as we shall see later.
  • the secondary units 8 furthermore comprise armature assemblies 9, each armature assembly being arranged so as to pass through one of the secondary units 8 so that the armatures of this set 9 are projecting on both sides of the frame.
  • associated secondary unit 8 for extend on one side towards the slab 1 above the slab 1 and on the other side towards the wall 2 above at least a portion of the portion of the wall 2 already built as we see it later.
  • Each set of reinforcement 9 is thus anchored in the concrete of the secondary unit 8.
  • the reinforcements of the sets of reinforcements 9 are for example made of steel.
  • the predalle 1 is thus arranged during the construction of the building.
  • the wall 3 is mounted substantially to the level where the floor 2 is intended to be installed.
  • the upper portion of the mounted wall portion 12 has a stop 13 which allows a better connection with the continuation of the wall 3 to build as we will see later.
  • Shoring beams (not visible here) are then positioned against the mounted portion 12 of the wall 3 so as to extend normal to said mounted portion 12 so as to support the construction of the floor 2.
  • the predalle 1 is arranged on the beams to delimit the surface of the floor 2.
  • the longitudinal edge 6 of the predalle 1, thus forming in part here one of the banks of the floor 2, is placed on the mounted portion 12 of the wall 3 therefore considered to extend parallel to the X direction.
  • figure 1 illustrates the already mounted portion 13 of the wall 3 and said predalle 1.
  • Concrete is also poured over the already existing portion 12 of wall 3 to continue construction wall 3 so that the reinforcements projecting from the other side of the secondary units 8 (and which extend above the portion 12 of the wall 3 already built) are also found embedded in the concrete.
  • the sets of reinforcements 9 are thus anchored in the floor 2 and in the wall 3 which ensures the lift of the floor 2.
  • the bases 10, the main units 5 of thermal insulation and the secondary units 8 of thermal insulation together constitute a formwork portion of the compression slab 14 intended to be cast on the predalle 1.
  • the implementation the formwork of the compression slab 14 is very simple.
  • the anchoring of the main units 5 to the secondary units 8 also makes it possible to ensure a good formwork of the compression slab 14.
  • thermal bridges that can form between the floor 2 and the wall 3 are thus reduced here along the entire wall 3 considered and substantially the entire height of the floor 1.
  • the joining of the different secondary units 8 and the main units 5 allows both to provide good thermal insulation of the floor 2 at the wall 3 and both to ensure good lift of the floor 2.
  • the secondary units 8 also fulfill a role of structural support thanks to the concrete constituting them and also to the sets of reinforcement 9 which are anchored in these secondary units 8.
  • mineral wool for the blocks 7 of the main units 5 allows, in addition to the thermal insulation function, to fulfill an additional function of fire protection and an additional function of sound insulation .
  • the mounting bases 10 are arranged in a mold for manufacturing the concrete body 4 of the pre-plate 1 so that said The bases 10 are positioned along one of the banks of the manufacturing mold, the bank therefore extending parallel to the direction X.
  • the different bases 10 are separated from each other by a predefined distance identical for all the bases.
  • the finger of each base 10 cleverly facilitates the proper arrangement of the various bases 10 in the manufacturing mold which facilitates the work of the worker.
  • the bases 10 thus rest on the bottom of the mold.
  • a third step one comes to form the space left free between two successive bases 10.
  • a first shuttering element facing the edge of the mold and a second shuttering element facing the future concrete body 4 are arranged, the two shuttering elements thus extending parallel to the X direction.
  • the two main units 5 and the two formwork elements define a substantially parallelepipedal volume.
  • the sets of reinforcements 9 are arranged in the manufacturing mold.
  • the formwork elements comprise orifices adapted to allow the passage of the reinforcements through them or being shaped in the form of a comb for the passage of reinforcement therethrough.
  • the reinforcements in the manufacturing mold before forming the space left free between the two successive bases 10.
  • the formwork elements are for example shaped in the form of a plate.
  • the formwork elements are for example metal material, for example steel, or wood or plastic material.
  • Formwork elements are indifferently reusable or lost items.
  • the concrete is poured into the manufacturing mold.
  • the main units 5 here the bases 10 and the blocks 7) and cleverly serve directly portions of formwork.
  • the predalle 1 thus created and delivered on site is therefore very simple to handle and move which facilitates the task of people working on the site.
  • the predalle 1 thus delivered has already integrated everything at once the structural support frames and both the secondary and main units of thermal insulation.
  • each base 110 is once again shaped into an open container, for example of the flower box type, substantially parallelepiped shape.
  • each base 110 further comprises two additional walls: a first wall 121 extending in the extension of one of the longitudinal walls from a first external lateral face of the base 110 and a second wall 122 extending in the extension of the other of the longitudinal walls of the base 110 from the second external lateral face of the base 110, each wall 121, 122 being shaped to define the constant interval between two consecutive 110 bases.
  • the bases 110 are arranged one after the other, their longitudinal walls 121, 122 make it possible to directly define the longitudinal formwork of the volume to form to create the secondary units 108 of thermal insulation. This eliminates additional formwork element for the manufacture of the pre-slab 101.
  • the longitudinal walls 121, 122 are adapted to allow the passage of reinforcements through them.
  • the construction element may not be a predalle but for example a beam, a beam ...
  • the building element has been used for the treatment of thermal bridges between the non-load-bearing side of a floor and the wall adjacent to the said bank
  • the building element may be used for treatment of thermal bridges between a bank carrying a floor and a wall adjacent to said bank.
  • the construction element it will be possible to use the construction element to isolate the floor, at its two non-supporting edges, from the adjacent walls and to implement a device of the prior art, such as the element of construction described. in the request FR 2 861 767 , to isolate the floor, at its two supporting banks, from the adjacent walls.
  • the main unit may be different from what has been described.
  • the main unit may not have a mounting base and be for example only consisting of the block of thermally insulating material.
  • the main unit is secured by anchoring to the building element (that is to say by being taken directly into the concrete of the body of the building element), the main unit can be joined together differently to the building element for example by screwing, gluing ... whether or not the main unit has a base.
  • the main unit can thus be secured to the concrete body of the building element once it has already been created or during the formation of the concrete body of the building element.
  • the base may for example be wood or metal material.
  • the base may include anchor feet embedded in the concrete body of the construction element to facilitate the anchoring of the base in said building element.
  • the block of thermally insulating material will not extend over the entire height of the building element but up to a few centimeters above the underside of the building element.
  • the base may also have a shape different from that described.
  • the base may not have a shape of flower box but for example comprise rods extending vertically and in which are pressed blocks of thermally insulating material.
  • the base may include one or more sliding and / or rotating formwork portions between a first position where the portion extends along one of the walls of the base and a second position where the portion extends. in the extension of said wall so as to be deployed to form a formwork portion for pouring specific concrete to form the secondary unit of thermal insulation and structural support.
  • This wall may be arranged to allow the longitudinal formwork of the secondary unit of thermal insulation and structural support or to allow the lateral formwork of the secondary unit of thermal insulation and structural support.
  • the formwork portions may be rigidly fixed to the bases or include means for their nesting on the bases.
  • these formwork portions may be rigidly attached to the blocks of thermally insulating material or comprise means for their nesting on the blocks of thermally insulating material or be pivotally mounted or sliding on the blocks of thermally insulating material.
  • the formwork may be completed by two separate formwork portions as described in the present application, or may be completed by a single formwork portion shaped for example by a jumper comprising two wings each allowing longitudinal formwork of the space left free between main units and a plateau connecting the two wings to secure them together.
  • This tray may either rest at the bottom of the mold or on the contrary overhang the space to form, the tray then of course including an orifice for pouring the specific concrete in space.
  • the blocks can be received in the bases other than by interlocking for example by gluing, screwing ...
  • the block may be in a material different from what has been described for example polystyrene, based on expanded polystyrene, based on mineral wool, based on expanded perlite ...
  • the secondary unit of thermal insulation and structural support may be different from what has been described.
  • the height of the secondary unit of thermal insulation and structural support may be different from that of the main unit or the base.
  • the main units and / or the secondary units may also include an additional layer of fire protection such as a mineral wool layer.
  • an additional layer of fire protection such as a mineral wool layer.
  • the block material of the different main units and / or secondary units themselves can provide a fire protection function.
  • reinforcement assemblies With regard to the manufacture of the building element, it will be possible to arrange in a different direction than that described, reinforcement assemblies, main units and formwork elements in the manufacturing mold. It is possible to consider casting the specific concrete before the concrete of the concrete body or simultaneously. We will be able to also first create the concrete body of the building element before joining the main units. It will also be possible to create the concrete body of the building element before creating the secondary units.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Building Environments (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Panels For Use In Building Construction (AREA)
EP16160937.5A 2015-03-17 2016-03-17 Fertigbauelement und herstellungsverfahren eines solchen fertigbauelements Active EP3070222B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1552193A FR3033810B1 (fr) 2015-03-17 2015-03-17 Procede de traitement de ponts thermiques, element d'isolation thermique et element de liaison structurelle associes et predalle equipee de tels elements.
FR1552191A FR3033809B1 (fr) 2015-03-17 2015-03-17 Procede de traitement de ponts thermiques, element d'isolation thermique et element de liaison structurelle associes et predalle equipee de tels elements.

Publications (2)

Publication Number Publication Date
EP3070222A1 true EP3070222A1 (de) 2016-09-21
EP3070222B1 EP3070222B1 (de) 2022-11-09

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EP16160937.5A Active EP3070222B1 (de) 2015-03-17 2016-03-17 Fertigbauelement und herstellungsverfahren eines solchen fertigbauelements

Country Status (4)

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EP (1) EP3070222B1 (de)
ES (1) ES2936722T3 (de)
FR (1) FR3033811B1 (de)
PL (1) PL3070222T3 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3076309B1 (fr) * 2017-12-29 2020-01-10 Omnium Technique D'etudes Et De Precontrainte Predalle a bande de bordure isolante pour la construction d'un plancher a rupture de pont thermique

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2861767A1 (fr) 2003-10-31 2005-05-06 Rector Rupteur thermique pour plancher en beton, dalle prefabriquee equipee d'un tel rupteur thermique et procede de fabrication d'un plancher
FR2887905A1 (fr) * 2005-06-30 2007-01-05 Lafarge Sa Rupteur thermique
FR2941725A1 (fr) * 2009-02-03 2010-08-06 Fabemi Gestion Element d'isolation thermique pour bloc prefabrique et bloc de construction ainsi obtenu.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19711187A1 (de) * 1997-03-18 1998-09-24 Schoeck Bauteile Gmbh System zur Wärmedämmung
FR2995330B1 (fr) * 2012-09-10 2014-09-05 Kp1 Predalle en beton pour construction de plancher de batiment

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2861767A1 (fr) 2003-10-31 2005-05-06 Rector Rupteur thermique pour plancher en beton, dalle prefabriquee equipee d'un tel rupteur thermique et procede de fabrication d'un plancher
FR2887905A1 (fr) * 2005-06-30 2007-01-05 Lafarge Sa Rupteur thermique
FR2941725A1 (fr) * 2009-02-03 2010-08-06 Fabemi Gestion Element d'isolation thermique pour bloc prefabrique et bloc de construction ainsi obtenu.

Also Published As

Publication number Publication date
ES2936722T3 (es) 2023-03-21
EP3070222B1 (de) 2022-11-09
FR3033811B1 (fr) 2017-07-21
FR3033811A1 (fr) 2016-09-23
PL3070222T3 (pl) 2023-05-08

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