EP4230801B1 - Foundation element and building foundation - Google Patents

Foundation element and building foundation Download PDF

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Publication number
EP4230801B1
EP4230801B1 EP23157761.0A EP23157761A EP4230801B1 EP 4230801 B1 EP4230801 B1 EP 4230801B1 EP 23157761 A EP23157761 A EP 23157761A EP 4230801 B1 EP4230801 B1 EP 4230801B1
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EP
European Patent Office
Prior art keywords
foundation
piece
foundation element
elements
joined
Prior art date
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Active
Application number
EP23157761.0A
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German (de)
English (en)
French (fr)
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EP4230801A1 (en
Inventor
Tuomas TOIVONEN
Markku Lehtonen
Antti NIINIKOSKI
Jaakko-Pekka KUMPULA
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Perustava Elementti Oy
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Perustava Elementti Oy
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Publication date
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Publication of EP4230801A1 publication Critical patent/EP4230801A1/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/01—Flat foundations
    • E02D27/016—Flat foundations made mainly from prefabricated concrete 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
    • E04B1/38—Connections for building structures in general
    • E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/01—Flat foundations
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/16—Arrangement or construction of joints in foundation structures
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • 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
    • E04B1/0007—Base structures; Cellars
    • E04B1/0015—Cellars constructed from prefabricated units
    • 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
    • E04B1/61—Connections for building structures in general of slab-shaped building elements with each other
    • 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
    • E04B1/66—Sealings
    • E04B1/68—Sealings of joints, e.g. expansion joints
    • 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
    • E04B1/66—Sealings
    • E04B1/68—Sealings of joints, e.g. expansion joints
    • E04B1/6806—Waterstops

Definitions

  • the invention relates to a foundation element having an inner surface and an outer surface, a lower edge and an upper edge, as well as a first end and a second end, the first end and/or the second end being provided with a fastening groove in the longitudinal direction of the end.
  • the invention further relates to a building foundation comprising foundation elements according to the invention.
  • Detached houses are normally constructed on shallow groundwork, so-called foundations.
  • the foundations can be made by laying foundation blocks or by casting concrete on site.
  • a method faster than on-site casting and laying is to make foundations of prefabricated foundation elements which are joined to assemble the foundation at the construction site.
  • Using prefabricated foundation elements can make the building of the foundation of a detached house significantly faster, and simultaneously the risk of substandard work on site is reduced.
  • Concrete foundation elements of prior art may be blocks having dimensions of several meters, which are joined at their ends either in alignment with or at an angle to each other.
  • the ends of the foundation elements can be provided with pre-cast joining plates of metal which make it possible to join the elements by welding.
  • Another common method of joining foundation elements is to provide the surfaces of the elements to be joined with a recess into which the reinforcing steel bars embedded in the foundation element extend.
  • concrete is cast in the cavity bounded by the recesses in the elements arranged against each other, the concrete joining the elements when it hardens.
  • Publication GB 444762 presents a structure for joining concrete wall elements, wherein the joint surfaces of wall elements are provided with a groove that opens to the joint surface and whose mouth has a width smaller than the width of the bottom part.
  • the elements are connected together by an elongated connecting piece which extends into the grooves placed opposite each other and engages the grooves in a so-called dovetail joint. Because of the properties of concrete, it is very difficult to make a groove with accurate dimensions in the joint surface of a concrete element, which is why an additional clearance or lack of space is easily created in said joint, hampering the work of making the joint. Moreover, concrete edge parts of the groove break off easily during installation of the connecting piece, which impairs the strength and the appearance of the joint.
  • Publication JP H11323958 A discloses a concrete element whose both end surfaces are provided with an end piece made of plastic or metal and having a groove that opens to the end surface of the concrete element, for a connecting piece.
  • the concrete element is intended for use as a supporting wall or a flower bed wall.
  • Document JP2010 070903 A discloses precast concrete foundation comprising a female foundation material provided with a female joint rail and a male foundation material provided with a male joint rail.
  • the joint rails are preconstituted to be fitted together with a space between enabling the foundation materials to be easily connected together on a construction site.
  • Document JP 2997569 B2 discloses a foundation of a building including a footing member and an upright member both made of precast concrete.
  • the upright members are connected together by metallic connection tools using male-female - fitting.
  • Document JP S47 11504 U discloses a joint for joining foundation concrete blocks. It is an aim of this invention to present a foundation element and a foundation, whereby problems involved in the prior art can be reduced. The aims of the invention are achieved with a foundation element according to appended claim 1 and a building foundation according to appended claim 10.
  • the invention relates to a foundation element having an inner surface and an outer surface, a lower edge and an upper edge, as well as a first end and a second end.
  • the first end and/or the second end are provided with a fastening groove extending in the longitudinal direction of the end.
  • At the first end and/or the second end of the foundation element at least one end piece is provided, in which said fastening groove is formed.
  • the foundation element is made primarily of concrete, such as fiber-reinforced concrete.
  • the end piece has a substantially flat end surface and a contact surface, and said fastening groove is provided with a mouth that opens to the end surface and an expansion channel spaced from the mouth and opening to the lower and/or upper edge of the foundation element.
  • the width of the expansion channel is greater than the width of the mouth.
  • the end surface of the end piece is provided with a sealing groove for receiving a joint seal.
  • the joint seal can be attached to the end surface of one of the two foundation elements to be joined, already before joining the foundation elements. Alternatively, an elastic joint seal can be inserted in the gap between end surfaces of the foundation elements after the foundation elements have been joined to each other.
  • a neck section is provided between the mouth and the expansion channel, the neck section comprising two substantially flat side surfaces arranged at a constant distance from each other.
  • the end surface of the end piece is at a substantially right angle to the outer surface.
  • Foundation elements equipped with such end pieces can be joined at their ends in such a way that the foundation elements to be joined are aligned.
  • the end surface of the end piece may be at an angle of substantially 45 degrees or substantially 135 degrees with respect to the outer surface.
  • Foundation elements equipped with such end pieces can be joined at their ends in such a way that the foundation elements to be joined form a right angle with each other.
  • the side surfaces of the neck section are at a substantially right angle to the end surface of the end piece.
  • the side surfaces of the neck section may form an angle of substantially 45 degrees to the end surface of the end piece.
  • the contact surface of the end piece is provided with engagement protrusions for engaging the cast concrete.
  • a thermal insulation board is provided between the inner surface and the outer surface, extending to the contact surface of the end piece and comprising a vertical edge fitted firmly between the engagement protrusions.
  • the thermal insulation board makes up a so-called insulated cavity foundation to improve the thermal insulation capacity of the foundation element.
  • the engagement protrusions support the vertical edge of the thermal insulation board delimited by the contact surface in the lateral direction, whereby the thermal insulation board remains stationary during the manufacture of the foundation element.
  • the end piece extends from the lower edge to the upper edge of the foundation element, and at its one edge to the outer surface of the foundation element.
  • the length of the end piece is substantially equal to the height of the foundation element, and the end piece extends, at its one edge, to the outer surface of the foundation element over substantially the entire length of the end piece.
  • the material of the end piece is metal, such as aluminium.
  • the building foundation according to the invention comprises at least two foundation elements joined together at their ends. Said foundation elements are foundation elements according to the invention.
  • said foundation elements are joined together at their ends by at least one connecting piece, the connecting piece being provided with a first bulge fitted into the expansion channel in the end piece of the first foundation element to be joined, and a second bulge fitted into the expansion channel in the end piece of the second foundation element to be joined, and a web section connecting the first and second bulges.
  • said at least two foundation elements are joined together at their ends by two connecting pieces, the first connecting piece being arranged at the lower edge of the foundation elements to be joined, and the second connecting piece being arranged at the upper edge of the foundation elements to be joined.
  • the overall length of the connecting pieces may thus be substantially smaller than the height of the foundation element.
  • said two foundation elements can be joined together at their ends by a single connecting piece whose length is substantially equal to the height of the foundation element.
  • said connecting pieces comprise a first end and a second end, and the surfaces of the connecting pieces are provided with ribs extending from the first end and pointing at the second end, the height of the ribs decreasing from the first end towards the second end.
  • Such a connecting piece is fitted, the second end first, in the fastening grooves in the end pieces of the foundation element, whereby the connecting piece is keyed and tightened by the ribs into place in the fastening grooves of the foundation elements.
  • the connecting pieces are aluminium castings or aluminium profiles.
  • the invention has the advantage of reducing the time needed for joining the foundation elements, whereby the building of the foundation at the construction site becomes faster. This results in savings in labour costs.
  • the invention has the advantage of improving the quality and strength of the joints between the foundation elements, because all the joints are made in the same way by using standardized connecting pieces.
  • Yet another advantage of the invention is that it reduces complaints and need for repair due to poor workmanship and assembly mistakes.
  • Figure 1a shows, by way of example, a foundation element 101 according to the invention in a cross-sectional view.
  • the foundation element according to the invention is a rectangular building element made primarily of concrete, having an inner surface 10 and an outer surface 12, and an upper edge 20 and a lower edge 18.
  • the outer surface constitutes the outermost surface of the foundation, that is, the surface exposed to open air.
  • the inner surfaces of the foundation elements remain inside the perimeter bounded by the outer surfaces.
  • the foundation elements are assembled at the construction site so that the inner and outer surfaces of the foundation elements are arranged in a vertical position, and the lower edges of the foundation elements are placed against a compacted soil layer, a hard frost insulation mounted on the compacted soil layer, or a footing cast on the compacted soil layer.
  • the outer walls of the building are mounted on the upper edge of the foundation elements.
  • the first thermal insulation board is close the outer surface 12 so that a layer of concrete, having a thickness of 40 mm, is left between the thermal insulation board and the outer surface.
  • the second thermal insulation layer is right on the inside of the foundation element; in other words, the inner surface of the thermal insulation board is flush with the inner surface of the foundation element.
  • the thermal insulation boards extend to the upper edge 20 of the foundation element, but their lower edges remain spaced from the lower edge 18 of the foundation element.
  • the material of the thermal insulation boards may be any hard thermal insulation material suitable for use as thermal insulation for ground-supported construction elements, such as EPS board, extruded polystyrene or polyurethane.
  • the thickness of the thermal insulation boards can be selected to provide the foundation element with a desired thermal insulation capacity.
  • the first thermal insulation board has a thickness of 50 mm and the second thermal insulation board has a thickness of 120 mm.
  • a concrete layer is provided between the first and second thermal insulation boards, acting as the primary load-bearing structure of the foundation element.
  • the thickness of the concrete layer depends on the thickness of the outer wall to be built on the foundation, and the loads to which the foundation will be subjected. Preferably, the thickness of the concrete layer is 120 mm.
  • the concrete used in the foundation element may be concrete having normal density, or so-called lightweight concrete.
  • the concrete is fiber-reinforced concrete; in other words, it contains short thin fibers which improve the tensile strength of the concrete.
  • Two parallel reinforcing bars 46 extend around the edges of the foundation element.
  • the height of the foundation element that is, the distance between the upper edge and the lower edge, can be selected according to the building project.
  • the height of the foundation element is at least 900 mm.
  • Figure 1b shows the foundation element 101 of Fig. 1a in a view from above.
  • the foundation element has two ends: a first end 14 and a second end 16. Both ends are provided with an end piece made of metal, preferably aluminium, and having a substantially flat end surface 25 forming the outermost surface of the end of the foundation element, and a contact surface 27 facing the inside of the foundation element.
  • the end pieces extend from the upper edge to the lower edge of the foundation element, and at their one edge to the outer surface of the foundation element over the entire length of the end piece.
  • the end surface of the end piece 24 at the first end 14 forms a substantially right angle to the outer surface 12 of the foundation element
  • the end surface of the end piece 26 at the second end 16 forms an angle of 45 degrees to the outer surface.
  • An end piece arranged at a right angle is primarily used in such ends of a foundation element that are joined to an end of another, substantially aligned foundation element. End surfaces of end pieces are arranged at an angle of 45 degrees when an end of a foundation element is joined to an end of another foundation element so that the joined foundation elements form a right angle with each other.
  • a single foundation element may thus comprise an end surface at a right angle to the outer surface at one end or both ends, or an end surface at an angle of 45 degrees at one end or both ends.
  • the end pieces are cast onto the foundation element in connection with casting of the concrete of the foundation element. At the stage of manufacture of the foundation elements, the end pieces may be used as part of the casting mould for the foundation element.
  • Figure 1c shows, by way of example, a connecting piece 40c for use in a joint between foundation elements, seen diagonally from below.
  • the connecting piece shown in the figure is a casting made of aluminium, having a plate-like web section 43 whose first edge comprises a first bulge 42 and whose second edge comprises a second bulge 44.
  • the connecting piece has a first end 45a and a second end 45b, the distance between them determining the length of the connecting piece.
  • the length of the connecting piece may be, for example, 10 to 20 cm.
  • the bulges have a substantially circular cross-section so that their part extending from the first end 45a has a cylindrical shape and their terminal part tapers conically when approaching the second end.
  • Both surfaces of the web section of the connecting pieces are provided with four ribs 48 having a triangular cross-section.
  • the ribs extend in parallel with the bulges from the first end 45a of the connecting piece towards the second end 45b. However, the ribs do not extend all the way to the second end. The height of the ribs is greatest at the first end and decreases from the first end towards the second end 45b.
  • Identical ribs are provided on both opposite surfaces of the web section with respect to the bulges.
  • the connecting piece shown in Fig. 1c is designed to be installed in fastening grooves opening to the upper and lower edges of the foundation element, the second end 45b of the connecting piece first.
  • the cross-sectional shape of the second end of the connecting piece can be dimensioned slightly smaller than the dimensions of the fastening grooves in the end pieces, whereby the connecting piece is first easily received in the fastening grooves.
  • Figure 2a shows a partial enlarged view of the first end 14 of the foundation element 101 shown in Fig. 1b , connected to the second end 16 of another foundation element aligned with it.
  • the end surfaces 25 of the end pieces 24 at the ends of the foundation elements to be joined form a substantially right angle to the outer surfaces 12 of the foundation element 101.
  • a straight fastening groove 22 extending in the longitudinal direction of the end piece is provided, whose first end comprises a mouth that opens to the end surface and whose second end comprises an expansion channel 28.
  • a neck section 30 is provided, whose width is equal to the width of the mouth.
  • the neck section has an equal width over its whole length and width, and its side surfaces are flat surfaces parallel to each other.
  • the expansion channel is cylindrical and has a diameter substantially greater than the width of the neck section.
  • the contact surface 27 of the end piece comprises three strip-like engagement protrusions 29 arranged in parallel with the fastening groove and spaced from each other.
  • the engagement protrusions improve the engagement between the end piece and the concrete.
  • Two engagement protrusions closest to the outer surface 12 are arranged on both sides of the thermal insulation board 34 close to the outer surface. These engagement protrusions support the vertical edge of the thermal insulation board at the manufacturing stage of the foundation element, particularly during casting of the concrete.
  • a third engagement protrusion is provided at the interface between the thermal insulation board bordering the inner surface of the foundation element, and the concrete layer. The function of the third engagement protrusion is particularly to prevent the edge of the end piece from coming off the foundation element.
  • the edge strip of the end piece bordering the outer surface 12 of the foundation bends at an angle of 45 degrees away from the end surface 25.
  • the bending edge strip constitutes a bevelled surface forming an angle of 45 degrees at the corner between the end surface and the outer surface of the foundation element.
  • a sealing groove 36 is provided which opens to the end surface and in which a joint seal 38 is received.
  • Figure 2a shows a butt joint between two parallel and aligned foundation elements which are joined by an elongated connecting piece 40a comprising a plate-like web section, a cylindrical first bulge 42 at the first edge of the web section and a similar second bulge 44 at the second edge of the web section.
  • the material of the connecting piece is metal, preferably aluminium.
  • the bulges and the web of the connecting piece are dimensioned in such a way that the connecting piece can be inserted from above into the fastening grooves 22 opening to the upper edge of the foundation element, whereby the first bulge is received in the expansion channel of the end piece of the first foundation element to be joined, and the second bulge is received in the expansion channel of the end piece of the second foundation element to be joined.
  • the metal end piece and the connecting piece have accurate dimensions and flat surfaces, which is why only a small clearance is sufficient between the outer surface of the connecting piece and the inner surfaces of the fastening grooves to enable the installation of the connecting piece, whereby the joint between the foundation elements is, in practice, a rigid joint.
  • the web and the bulges of the connecting piece have to be dimensioned to provide the connecting piece with sufficient structural strength and rigidity. It has been found in practice that sufficient structural strength and rigidity can be obtained with a connecting piece of aluminium having an overall width of approximately 210 mm, a web thickness of 8 mm and a bulge diameter of 23 mm.
  • the space between the end surfaces of the adjacent end pieces can be filled with insulating joint foam, such as polyurethane foam.
  • the elastic joint seal 38 installed in the sealing groove prevents the joint foam from being discharged onto the outer surface of the foundation elements at the stage of mounting the elements. In the finished foundation, the joint seal prevents rainwater from entering the joint structure.
  • Figure 2b shows a partial enlarged view of the joint between the end of the foundation element shown in Fig. 1b and the end of another foundation element at a right angle.
  • the end surfaces 25 of the end pieces 26 at the ends of the foundation elements to be joined are at an angle of substantially 45 degrees to the outer surfaces 12 of the foundation elements, whereby these end pieces are wider than the end pieces shown in Fig. 2a .
  • the end pieces shown in Fig. 2b comprise the same structural elements as the end piece shown in Fig. 2a ; in other words, a fastening groove 22 is provided in the middle part of the end piece, its first end having a mouth opening to the end surface and its second end having a cylindrical expansion channel 28.
  • a neck section 30 having a width equal to the width of the mouth is provided between the mouth and the expansion channel, comprising flat side surfaces.
  • the side surfaces of the neck section 30 are parallel to the outer surface 12 of the foundation element, forming an angle of 45 or 135 degrees to the end surface 25.
  • the contact surface 27 of the end piece comprises three strip-like engagement protrusions 29 arranged in parallel with the fastening groove and spaced from each other.
  • the engagement protrusions improve the engagement between the end piece and the concrete, and support the vertical edge of the thermal insulation board 34 placed between them.
  • the engagement protrusions are parallel to the outer surface of the foundation elements, whereby they also form an angle of 45 or 135 degrees to the end surface 25.
  • the edge strip of the end piece 26 limited to the outer surface 12 of the foundation, bends at an angle of 45 degrees away from the end surface 25.
  • the bending edge strip constitutes a bevelled surface forming an angle of 45 degrees at the corner between the end surface and the outer surface of the foundation element.
  • Adjacent to the bevelled surface a sealing groove 36 is provided which opens to the end surface and in which an elastic joint seal 38 is fitted.
  • the gap between the end surfaces is filled with joint foam, preferably polyurethane foam.
  • the foundation elements are joined by a connecting piece 40b comprising a plate-like web section 43 and a cylindrical first bulge 42 at the first edge of the web section and a similar second bulge 44 at the second edge of the web section.
  • the connecting piece 40b shown in Fig. 2b deviates from the connecting piece 40a shown in Fig. 2a in that a right-angled bend is provided in the middle of the web section of the connecting piece; in other words, the web section has the shape of a corner profile. Thanks to the bend, the connecting piece can be used for joining such end pieces of foundation elements, in which the fastening grooves are arranged at a right angle to each other.
  • the connecting piece is installed in the fastening grooves by pushing it in place from above or in the fastening grooves opening to the upper edge of the foundation elements, or by laying the foundation elements onto the connecting piece arranged at the site of mounting the foundation so that the connecting piece is received in the fastening grooves opening to the lower edge of the foundation element.
  • Figure 3 shows, by way of an example, a building foundation according to the invention in a top view.
  • the foundation has been built on a layer of crushed gravel or on a hard thermal insulation layer installed on a layer of crushed gravel at the building site.
  • a separate footing under the foundation whereby the foundation elements are built on the footing.
  • the foundation elements are installed in a vertical position in their locations defined in the construction plan, and joined at their ends as described above.
  • the shorter ends of the foundation are made of a single foundation element 102 in which the end surface at each end is arranged at an angle of 45 degrees to the outer surface of the foundation element.
  • the first long side of the foundation is made of two foundation elements 101 in which the end surface at the first end is at a right angle and the end surface at the second end is at an angle of 45 degrees to the outer surface of the foundation element.
  • the second long side of the foundation comprises three foundation elements. In the central foundation element 103 of these, the end surfaces at both ends are at a right angle to the outer surface of the foundation element.
  • the two other foundation elements are, with respect to the end surfaces, similar to those on the first long side.
  • Fig. 3 all the corners of the foundation have right angles. It is obvious that the end pieces of the foundation elements can also be made such that the angle between the foundation elements to be joined may also be different from a straight or right angle, for example an angle of 45, 60, 120 or 135 degrees.
  • the foundation elements are joined to each other by end pieces at the ends of the foundation elements. If necessary, end pieces according to the invention may also be provided on the inner surface of the foundation element, at a desired space from the ends of the foundation element. It is thus possible to remove part of the thermal insulation layer from the inner surface of the foundation element, at the location of the end piece to be attached to the foundation element, so that the end piece is firmly attached to the cast concrete of the foundation element.
  • an end piece at the end of another foundation element can be placed, and the foundation elements can be joined by means of connecting pieces according to the invention.
  • Such a joint can be used, for example, when building a foundation under a line of bearing intermediate walls within the framework delimited by the foundation.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
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  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
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EP23157761.0A 2022-02-22 2023-02-21 Foundation element and building foundation Active EP4230801B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20225161A FI131229B1 (fi) 2022-02-22 2022-02-22 Sokkelielementti ja rakennuksen sokkeli

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EP4230801A1 EP4230801A1 (en) 2023-08-23
EP4230801B1 true EP4230801B1 (en) 2025-04-23

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DK (1) DK4230801T3 (da)
FI (1) FI131229B1 (da)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118581984B (zh) * 2024-06-26 2024-12-10 中建西部建设集团第六(北京)有限公司 一种混凝土预制板连接结构及混凝土预制板

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB444762A (en) 1934-09-25 1936-03-25 Indian Patent Stone Company Lt Improvements in or relating to the building of structures such as walls, partitions, floors and the like
JPS4711504U (da) * 1971-02-27 1972-10-11
JP2997569B2 (ja) * 1991-05-21 2000-01-11 ミサワホーム株式会社 建物の基礎
JPH11323958A (ja) 1998-05-20 1999-11-26 Katsuya Hiraoka 建築物の施工方法とこれに用いるコンクリート製品
JP4761402B2 (ja) * 2008-09-16 2011-08-31 會澤高圧コンクリート株式会社 プレキャストコンクリート製基礎材
JP5964646B2 (ja) * 2012-04-26 2016-08-03 住友林業株式会社 建物の基礎構造とその設計用プログラム

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FI131229B1 (fi) 2024-12-17
FI20225161A1 (fi) 2023-08-23
EP4230801A1 (en) 2023-08-23
DK4230801T3 (da) 2025-08-18

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