EP3960947A1 - Rail d'ancrage - Google Patents

Rail d'ancrage Download PDF

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Publication number
EP3960947A1
EP3960947A1 EP21187076.1A EP21187076A EP3960947A1 EP 3960947 A1 EP3960947 A1 EP 3960947A1 EP 21187076 A EP21187076 A EP 21187076A EP 3960947 A1 EP3960947 A1 EP 3960947A1
Authority
EP
European Patent Office
Prior art keywords
sealing
sealing element
rail body
rail
formwork
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
EP21187076.1A
Other languages
German (de)
English (en)
Inventor
Falk Wittmann
Roland Unterweger
Christoph Wiedner
Emil Blum
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.)
Fischerwerke GmbH and Co KG
Original Assignee
Fischerwerke GmbH and Co KG
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 Fischerwerke GmbH and Co KG filed Critical Fischerwerke GmbH and Co KG
Publication of EP3960947A1 publication Critical patent/EP3960947A1/fr
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38Connections for building structures in general
    • E04B1/41Connecting devices specially adapted for embedding in concrete or masonry
    • E04B1/4107Longitudinal elements having an open profile, with the opening parallel to the concrete or masonry surface, i.e. anchoring rails
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/24Safety or protective measures preventing damage to building parts or finishing work during construction
    • E04G21/30Safety or protective measures preventing damage to building parts or finishing work during construction against mechanical damage or dirt, e.g. guard covers of stairs
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38Connections for building structures in general
    • E04B1/41Connecting devices specially adapted for embedding in concrete or masonry
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G17/00Connecting or other auxiliary members for forms, falsework structures, or shutterings

Definitions

  • the invention relates to an anchor rail with the features of the preamble of claim 1 and a fastening arrangement with such an anchor rail according to claim 9.
  • Anchor rails which are cast in concrete, are known for fastening objects to a structure made of concrete.
  • the anchor rails are usually nailed or screwed to a formwork panel with their upper side, in which a slot-like opening extending in the longitudinal direction is arranged.
  • the formwork is removed and only the top of the anchor channel with the slot-like opening is accessible.
  • concrete must be prevented from penetrating through the slit-like opening into an interior space of the anchor rail.
  • the interior of the anchor rail is designed to accommodate a fastener with a hammer head. In the worst case, penetration of concrete into the interior would mean that the fastener could no longer be introduced into the interior.
  • a disadvantage of the solution described here is that above a certain concrete pressure, the concrete can penetrate between the top of the anchor rail and the formwork and compress the rubber insert, so that a sealing effect is no longer guaranteed, at least at high concrete pressures. In other words, high concrete pressures This can lead to a leak in some areas of the rubber insert, through which the concrete can penetrate the anchor rail.
  • the object of the present invention is to create an anchor rail which reliably prevents the concrete from penetrating into the interior space even at high concrete pressures.
  • the invention proposes an anchor rail for embedding in concrete with a rail body that extends along a longitudinal direction.
  • the rail body has a base on an underside and a first and a second side wall, which are oriented in particular orthogonally to the base.
  • the base body has, in particular, a C-shaped cross section.
  • the first and the second side wall can also be arranged at an angle of less than or greater than 90° to the base area, as a result of which the rail body can have a cross section that deviates from the C shape.
  • a lip is arranged on each of the first and second side walls on an upper side which is opposite to the lower side, with the lips protruding towards one another.
  • the lips can extend parallel to the base area or be inclined or thickened in the direction of the base area.
  • the precise design of the lips depends on the load to be absorbed by the anchor rail and its intended use.
  • a longitudinally extending opening of the rail body is formed between the lips.
  • the base together with the first and second sidewalls and the first and second lips define an interior space of the track body.
  • a hammer head fastener can be inserted through the opening into the interior of the rail body, which can be brought into contact with the lips for attachment to the anchor rail and fixed in a non-positive manner.
  • the rail body has a first and a second end opening, the rail body extending in the longitudinal direction between the first and the second end opening.
  • At least two anchoring means are arranged on the underside of the rail body.
  • the anchoring means are, in particular, head bolts, structured reinforcing steel rods, flexible ropes or loops, etc.
  • the anchoring means are used to anchor the anchor rail back into the concrete.
  • a particularly elastic sealing element is arranged on the rail body in such a way that at least parts of the sealing element protrude laterally outward beyond the rail body.
  • sealing element which, however, is not intended to exclude parts of the sealing element.
  • laterally outward is meant that the sealing member where it is located on the first sidewall, across the first sidewall in a direction normal to an outer side surface of the first sidewall, and where it is located on the second sidewall is, overhangs the second side wall in a direction normal to an outer side surface of the second side wall.
  • the extension is in each case oriented away from the interior of the rail body.
  • the sealing element can also be arranged entirely or at least for the most part on the first and the second side wall, more precisely on the respective outer side surface of the respective side wall. It is also possible to arrange the sealing element on the upper side, in particular in such a way that the sealing element covers the first and the second lip over a large area and protrudes over the first and the second side wall. In this case, however, the sealing element in particular does not extend into the opening of the rail body. Reliable sealing against liquid concrete can be guaranteed by the overhang of the sealing element laterally beyond the rail body.
  • the sealing element protrudes both laterally over the respective side walls and upwards over the upper side of the rail body.
  • “Upward” is to be understood as meaning a direction which is oriented in particular orthogonally to the base area and faces away from the opening of the rail body. If the top of the anchor rail is placed on a formwork, the rail body in particular is spaced upwards from the formwork by the height of the overhang. If the anchor rail is then nailed or screwed to the formwork, the rail body is pressed against the formwork applied force and in particular brought into contact with the formwork. As a result, the upward protrusion of the sealing element can be reduced, as a result of which the sealing element at least partially nestles against the formwork, which leads to an improved sealing effect.
  • the sealing element is designed as an elastic sealing lip with a particularly triangular cross section.
  • the sealing lip is in particular an elastomer which is at least temporarily resistant to liquid concrete and has good elastic properties. This ensures that the sealing lip is not decomposed by the liquid concrete and can also nestle well against the formwork. It is also possible that the sealing lip is made of rubber or an elastic foam, for example foam rubber.
  • the sealing element, in particular the sealing lip has an attachment side for attachment to the rail body and a contact side for contact with a formwork.
  • the sealing lip has a force absorption side with a particularly straight or slightly concavely curved force absorption surface. The liquid concrete acting on the anchor channel comes into contact with the force absorbing surface, whereby the sealing lip is pressed against the formwork and the channel body.
  • the sealing element is glued to the rail body via the fastening side.
  • the sealing element is glued to the respective transition radius.
  • the sealing element can also be glued to the first and second side wall, more precisely to the respective outer side surface, and/or glued flat to the first and second lip.
  • gluing to the side surfaces ensures a sufficiently large adhesive surface. This type of bonding is to be preferred in particular when the transition radii are small due to the production process and consequently only form transition edges.
  • a double-sided adhesive tape can be arranged on the fastening side of the sealing element, with one side of the adhesive tape adhering to the fastening side and the other side being covered with a film.
  • the film then simply has to be removed and the sealing element glued on.
  • the first and the second end opening of the rail body are closed by a first and a second sealing plug, with a cross section of the sealing plug essentially corresponding to a cross section of the rail body.
  • the sealing plugs are made in particular from a dimensionally stable plastic and are in particular identical.
  • the sealing plugs are, in particular, introduced in a form-fitting and fitting manner into the respective end-side opening or attached to it.
  • the sealing element is arranged on the first and the second sealing plug in such a way that at least parts of the sealing element protrude laterally outwards over a first and a second side wall and an end face of the respective sealing plug, in particular orthogonal thereto.
  • the first and second side walls of the respective sealing plugs are in particular flush with the first and second side walls of the rail body when the first and second sealing plugs are inserted into or attached to the first and second end openings.
  • the sealing plugs have, in particular, an underside and an upper side, which are in particular level with the underside and the upper side of the rail body when the sealing plugs are introduced into the respective end-side opening or attached to it.
  • the sealing element protrudes both laterally beyond the respective side walls of the respective sealing plug and upwards beyond the respective upper side of the respective sealing plug.
  • the sealing plugs have a dual function: on the one hand they close the first and the second end opening and on the other hand they serve as a carrier for the sealing element. If the sealing element is arranged both on the rail body and on the sealing plug, it has, seen from above, in particular the shape of a rectangular frame, similar to a picture frame and can be composed in one piece or in several pieces.
  • the sealing element is arranged in particular on the transition radii and on the first and the second side wall, in particular glued on, and extends in the longitudinal direction of the rail body over the first and the second side wall and over the adjoining side walls of the first and the second sealing plug, as well as over the end faces of the sealing plug.
  • the parts of the sealing element that extend along the longitudinal direction are made of longer sections of equal length
  • the parts of the sealing element that are arranged on the end faces of the sealing plugs are made of shorter sections of equal length.
  • first the longer sections can be glued to the rail body and then the shorter sections can be glued to the respective sealing plug. It is important to ensure that there are no gaps between the individual sections through which concrete can enter the interior. This can be achieved in that the individual sections each have a miter cut of 45° at their ends and thus form interfaces. More complex interfaces, such as tongue and groove or undercut plug connections, are also possible.
  • the sealing element has different cross sections on the end faces of the sealing plugs and along the longitudinal extent. This makes it possible for the sealing element to be glued to the side walls on the one hand and to the end faces of the sealing plugs on the other in such a way that the different sections at the ends can form interfaces that are aligned as precisely as possible. In other words, due to the special design, the miter cuts at the ends meet as exactly as possible.
  • the sealing element can be glued to the first and the second sealing plug.
  • the advantageous embodiment of the invention offers the possibility of delivering the anchor rail according to the invention completely preassembled to a construction site.
  • the sealing plugs can be inserted into the end faces first and then the sealing element can be glued “all around” around the rail body and the sealing plugs.
  • the sealing element can also be positively and non-positively connected to the sealing plug.
  • grooves can be arranged in the sealing plugs, which extend along the respective side walls and the end face of the sealing plugs. The particularly elastic sealing element can be inserted or clamped into these grooves and thus fastened to the sealing plug.
  • the first and second end openings are additionally sealed by a seal, in particular a sealing fleece , sealed.
  • the seal can be arranged between the first sealing plug and the first front opening and the second sealing plug and the second front opening.
  • the seal seals a connection point between the respective sealing plug and the respective end opening, as a result of which no liquid concrete can penetrate into the interior of the rail body via the connection point.
  • the sealing fleece is over the side walls of the Rail body, arranged around the end faces of the sealing plugs and on the underside of the rail body or "put over" in such a way that the connection point is completely covered together with the sealing element. This prevents liquid concrete from penetrating into the interior via the connection point.
  • the sealing fleece which in particular is at least partially elastic, serves to fix the sealing plugs on the rail body so that they are secured against falling out.
  • the upper side of the rail body is placed on the formwork and the sealing element is subjected to a force from concrete against the formwork.
  • the sealing element With increasing concrete pressure, which arises when the formwork is successively filled with concrete, the sealing element is subjected to a greater force between the concrete and the formwork, in particular compressed.
  • the contact side of the sealing element nestles more closely against the formwork panel, as a result of which the sealing effect of the sealing element against the formwork increases with increasing concrete pressure.
  • the particularly triangular cross section of the sealing element ensures that the sealing element is not pushed away from the rail body and the sealing plug, even when the concrete pressure increases.
  • the particularly triangular cross-section of the sealing element ensures that the force that the concrete exerts on the anchor rail always has a force component that presses the sealing element against the formwork and the rail body via the force absorption surface, which increases the sealing effect with increasing concrete pressure is improved.
  • the triangular cross section is merely an example here.
  • Such an advantageous effect can also be achieved, as described above, in that the sealing element between the formwork and the rail body has, for example, an at least slightly concavely curved force absorption surface. The force component acting on the curved force absorption surface presses the sealing element both against the rail body and against the formwork.
  • the anchor rail 1 has a C-shaped rail body 2 made of steel, which extends along a longitudinal direction L.
  • the rail body 2 has a base 3 on an underside 4 of the rail body 2 .
  • Two head bolts 5 made of steel are arranged on the base 3, for example welded or riveted.
  • a first side wall 6 and a second side wall 7 of the rail body adjoin the base area 3 and are arranged parallel to one another and orthogonally to the base area 3 .
  • the side walls 6, 7 extend as far as an upper side 8 of the rail body 2. Transition radii 9 caused by production are arranged there between the lips 10 and the side walls 6, 7.
  • the lips 10 extend parallel to the base 3 in the longitudinal direction L and face each other.
  • An opening 11 in the rail body 2 is arranged between the lips 10 of the rail body 2 .
  • a hammer head fastener can be introduced into the rail body 2 in the opening 11 (not shown).
  • the rail body 2 has a first front opening 12 and a second front opening 13 , the rail body 2 extending in the longitudinal direction L between the first and second front openings 12 , 13 .
  • the first end opening 12 is through a first sealing plug 14 and the second end opening 13 through a second sealing plug 15 closed.
  • the sealing plugs 14 and 15 are identical injection molded parts and have a cross section corresponding to the rail body 2 .
  • the sealing plugs 14 , 15 each have an upper side 16 which is level with the upper side 8 of the rail body 2 .
  • the sealing plugs 14 , 15 each have a first and a second side wall 17 , 18 which are flush with the first and the second side wall 6 , 7 of the rail body 2 .
  • Undersides 19 of the sealing plugs 14, 15 are level with the underside 4 of the rail body 2.
  • the sealing plugs 14, 15 each have an end face 20 orthogonal to the first and the second side wall 17, 18.
  • figure 1 shows the anchor rail 1 according to the invention with the sealing plugs 14, 15, whereas in figure 2 the sealing plugs 14, 15 are not shown for a detailed view.
  • An elastic sealing element 21 in the form of an elastic sealing lip 22 made of an elastomer is arranged both on the rail body 2 and on the two sealing plugs 14, 15 in such a way that it forms a rectangular frame when viewed from above.
  • the sealing element 21 protrudes both laterally over the first and the second side wall 6, 7 of the rail body 2 and laterally over the first and the second side wall 17, 18 and laterally over the end faces 20 of the sealing plugs 14, 15.
  • the sealing element 21 also projects upwards over the upper side 8 of the rail body 2 and over the upper side 16 of the sealing plugs 14 , 15 .
  • the sealing element 21 is designed to be assembled in several parts and extends, as shown in FIG figure 1 shown, like a frame around the upper side 8 of the rail body 2 and around the upper side 16 of the sealing plugs 14, 15.
  • the sealing element 21 has a fastening side 23 facing the rail body 2 , via which the sealing element 21 is glued to the rail body 2 and the sealing plugs 14 , 15 .
  • the sealing plugs 14, 15 and the parts of the sealing element 21 arranged thereon are not shown.
  • the sealing element 21 has a contact side 24 adjoining the fastening side 23, the function of which will be explained below.
  • a slightly concavely curved force absorption surface K connects to the attachment side 23 and to the contact side 24, as a result of which the sealing element 21 has an approximately triangular cross section, as in FIG figure 2 you can see.
  • the parts of the sealing element 21 that extend over the end faces 20 of the sealing plugs 14, 15 also have an identical shorter length and are glued to the end faces 20 of the sealing plugs 14, 15 via the fastening sides 23.
  • the longer parts of the sealing element 21 have a different cross section than the shorter parts of the sealing element 21, which is shown in figure 3 is evident.
  • the different cross sections ensure that the sealing element 21 can be firmly glued to the rail body 2 and to the sealing plugs 14, 15 and that interfaces 25 which abut one another as exactly as possible and are designed as miter cuts of 45° between the longer and the shorter parts of the sealing element 21 arise.
  • the four interfaces 25 of the sealing element 21 are additionally glued together in order to prevent liquid concrete 30 from penetrating the rail body 2 through the interfaces 25 .
  • the sealing fleece 27 ensures that no liquid concrete 30 can penetrate into the rail body 2 between the sealing plugs 14, 15 and the front openings 12, 13 of the rail body 2.
  • the sealing fleece 27 keeps the sealing plugs 14, 15 under tension with respect to the rail body 2, which prevents the sealing plugs 14, 15 from becoming detached from the rail body 2 unintentionally.
  • FIG 1 represented anchor rail 1 according to the invention is delivered as shown pre-assembled to a construction site.
  • figure 3 shows a fastening arrangement according to the invention of the anchor rail 1 on a formwork 28.
  • the anchor rail 1 is placed with the upper side 8 of the rail body 2 and with the contact side 24 of the sealing element 21 on a surface 29 of the formwork 28, creating a distance D, as in figure 2 drawn in, can arise between the rail body 2 and the surface 29 .
  • the anchor rail 1 is then nailed to the formwork 28, as a result of which the rail body 2 approaches the surface 29 and the distance D consequently decreases.
  • the distance D becomes minimal as soon as the rail body 2 is in contact with the surface 29 .
  • the contact side 24 of the sealing element 21 hugs the surface 29 more and more as the distance decreases.
  • liquid concrete 30 is poured onto the anchor rail 1 "from above".
  • the concrete 30 comes into contact with the slightly concavely curved force absorption surface K, whereby a force component F K , which is oriented orthogonally to the force absorption surface K, arises.
  • the pressure that the concrete 30 exerts on the anchor rail 1 increases.
  • the value of the force component F K on the force absorption surface K of the sealing element 21 also increases.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
EP21187076.1A 2020-08-26 2021-07-22 Rail d'ancrage Pending EP3960947A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102020122305.6A DE102020122305A1 (de) 2020-08-26 2020-08-26 Ankerschiene

Publications (1)

Publication Number Publication Date
EP3960947A1 true EP3960947A1 (fr) 2022-03-02

Family

ID=77021209

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21187076.1A Pending EP3960947A1 (fr) 2020-08-26 2021-07-22 Rail d'ancrage

Country Status (3)

Country Link
EP (1) EP3960947A1 (fr)
CN (1) CN114109058A (fr)
DE (1) DE102020122305A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2317339B1 (de) * 1973-04-03 1974-05-09 Deutsche Kahneisen Gesellschaft West Gmbh, 1000 Berlin Klemmprofilleiste zum Halten einer Ankerschiene an einer Schalung
GB2243396A (en) 1990-04-26 1991-10-30 Wincro Metal Ind Ltd Apparatus for use with cast-in channels for facade support and restraint apparatus
US5357721A (en) * 1993-01-28 1994-10-25 Alvarez Gustavo O Adjustable beam holder
US20140250825A1 (en) * 2013-03-11 2014-09-11 Douglas S. Richardson Cast-in anchor system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2317339B1 (de) * 1973-04-03 1974-05-09 Deutsche Kahneisen Gesellschaft West Gmbh, 1000 Berlin Klemmprofilleiste zum Halten einer Ankerschiene an einer Schalung
GB2243396A (en) 1990-04-26 1991-10-30 Wincro Metal Ind Ltd Apparatus for use with cast-in channels for facade support and restraint apparatus
US5357721A (en) * 1993-01-28 1994-10-25 Alvarez Gustavo O Adjustable beam holder
US20140250825A1 (en) * 2013-03-11 2014-09-11 Douglas S. Richardson Cast-in anchor system

Also Published As

Publication number Publication date
DE102020122305A1 (de) 2022-03-03
CN114109058A (zh) 2022-03-01

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