US20220074215A1 - Wall formwork with sleeve for anchor holes, sleeve and cleaning method - Google Patents
Wall formwork with sleeve for anchor holes, sleeve and cleaning method Download PDFInfo
- Publication number
- US20220074215A1 US20220074215A1 US17/416,675 US202017416675A US2022074215A1 US 20220074215 A1 US20220074215 A1 US 20220074215A1 US 202017416675 A US202017416675 A US 202017416675A US 2022074215 A1 US2022074215 A1 US 2022074215A1
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- US
- United States
- Prior art keywords
- sleeve
- anchor hole
- wall formwork
- formwork
- flange
- 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
Links
- 238000009415 formwork Methods 0.000 title claims abstract description 107
- 238000000034 method Methods 0.000 title claims abstract description 5
- 238000004140 cleaning Methods 0.000 title claims abstract 3
- 238000010276 construction Methods 0.000 claims abstract description 5
- 239000011324 bead Substances 0.000 claims description 3
- 239000013013 elastic material Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
- E04G17/06—Tying means; Spacers ; Devices for extracting or inserting wall ties
- E04G17/065—Tying means, the tensional elements of which are threaded to enable their fastening or tensioning
- E04G17/0651—One-piece elements
- E04G17/0654—One-piece elements remaining completely or partially embedded in the cast material
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
- E04G17/007—Plugs to close openings in forms' surface
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G19/00—Auxiliary treatment of forms, e.g. dismantling; Cleaning devices
- E04G19/006—Cleaning devices
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G9/00—Forming or shuttering elements for general use
- E04G9/02—Forming boards or similar elements
- E04G9/06—Forming boards or similar elements the form surface being of metal
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G9/00—Forming or shuttering elements for general use
- E04G9/02—Forming boards or similar elements
- E04G2009/028—Forming boards or similar elements with reinforcing ribs on the underside
Definitions
- the invention relates to a wall formwork for the construction of walls of concrete and a method of removing concrete from an anchor hole.
- a wall formwork comprises a formwork facing supported by supporting elements.
- the supporting elements can be longitudinal beams and cross beams.
- the supporting elements can be made of metal. Longitudinal beams and cross beams can form a frame for the wall formwork. Anchor holes pass through supporting elements.
- the two sides of a wall that is to be constructed are delimited by wall formworks, namely by formwork facings of the wall formworks. Opposite wall formworks are held by anchor systems.
- the anchor rods of the anchor systems are then inserted through anchor holes in the wall formwork and attached at their ends to the elements supporting the respective formwork facings by means of locking devices in such a way that at least the tensile force acting on the anchor rods during concreting is absorbed.
- adjustable formwork is a wall formwork which is installed first. Then the closing formwork is installed opposite the adjustable formwork. Adjustable formwork and closing formwork are connected to each other by one or more anchor systems during assembly. Concrete is poured into the space between the adjustable formwork and the closing formwork. A wall is created by the subsequent hardening of the concrete.
- a sleeve which is inserted into anchor holes.
- the sleeve has a seal which, when installed, seals a space between anchor rod and anchor hole so that no liquid concrete can flow into the anchor hole.
- the seal is connected to the sleeve via a predetermined breaking point in order to be able to easily remove a damaged seal from the sleeve if necessary.
- an anchor hole is provided with an outer sleeve and an inner sleeve which are interlocked with each other in order to fasten them to an anchor hole in a form-fit manner.
- An accessory claim relates to a method for a removal of concrete from an anchor hole.
- Advantageous embodiments result from the subclaims.
- the invention further relates to a sleeve for wall formwork.
- Claim 1 relates to a wall formwork for the construction of walls with a formwork facing and elements which support the formwork facing.
- the supporting elements preferably consist of metal, in particular of a steel. They are usually beams running longitudinally and transversely behind a formwork facing. Beams on the edge side can be used as frames for the formwork facing.
- the formwork facing is attached to the beams, for example screwed or riveted to the beams.
- Anchor holes pass through supporting elements.
- a sleeve made of plastic is held in a force-fit and/or form-fit manner
- An anchor hole therefore has a sleeve even if no anchor rod is inserted through the anchor hole.
- Each sleeve can therefore be held in the anchor hole by static friction, for example.
- the sleeve extends from one end of the anchor hole to the other end of the anchor hole.
- the outer face of the sleeve tightly abuts the inner face of the anchor hole, at least at the side of the formwork facing, so that no concrete can get between the sleeve and the anchor hole from the side of the formwork facing.
- the sleeve is preferably flush with the opposite side of the anchor hole. This means that the sleeve does not protrude from the anchor hole, nor is it set back from the anchor hole.
- the wall of the sleeve is completely closed.
- the sleeve has a flange on the side of the formwork facing. By the flange it is prevented that the sleeve is pulled out from the side opposite the formwork facing. During concreting, the sleeve cannot be pushed out of the anchor hole with improved reliability.
- the flange is located in particular in a recess of the formwork facing.
- the flange does not rest on the formwork facing. Instead, the flange rests on a supporting element. Then, the formwork facing can adjoin laterally at the flange. It is advantageous if the flange is flush with the formwork facing.
- the flange is located in an enlargement of the anchor hole.
- the flange then rests on the bottom of the enlargement. It is advantageous that the flange is flush with the anchor hole.
- the surface of the flange and the edge of the anchor hole which are then visible then form a common plane.
- the formwork facing can adjoin laterally at the edge of the anchor hole.
- the formwork facing is then advantageously flush with the anchor hole.
- the surface of the formwork facing and the edge of the anchor hole which are then visible form a common plane.
- the diameter of the recess advantageously corresponds to the diameter of the flange in such a way that an essentially closed surface is provided. Between the flange and the formwork facing there is therefore preferably no gap into which concrete could flow.
- anchor holes which are closed by a cap on the side of the formwork facing.
- the cap is held in a force-fit and/or form-fit manner on the sleeve.
- the cap can be removed without tools.
- the number of anchor rods used can be adapted to the actual requirements in order to speed up assembly and disassembly.
- the circumferential surface of the sleeve has grooves on the outer face.
- the grooves preferably run parallel to the longitudinal axis of the sleeve in order to be able to insert a sleeve into an anchor hole with particularly little effort.
- the grooves preferably extend to the end of the sleeve which is opposite the formwork facing.
- the grooves preferably reach to the end of the sleeve which is at the formwork facing without reaching this end. There is then a section that is free of grooves and which has a smooth surface. This makes it possible to provide a tight joint at the formwork facing in which no concrete can flow. However, excessive force is avoided to easily remove and insert a sleeve from the anchor hole for replacement when necessary.
- the sleeve has one or more laterally outwardly projecting projections which are engaged with holes in the inner wall of an anchor hole to fix the sleeve in the anchor hole in a form-fit manner.
- the projections run ramp-shaped towards the formwork facing to facilitate insertion of the sleeve into the anchor hole from the side of the formwork facing.
- other form-fit elements can also be provided.
- a flexible lug can be provided as a form-fit element, which protrudes from the outer face of the sleeve at an angle of less than 90°.
- the sleeve is manufactured in one piece.
- the sleeve may have been manufactured in one piece by injection moulding.
- the sleeve has in one embodiment a seal on the side on which the formwork facing is located, the seal consisting in particular of an elastomer and thus of an elastic material.
- the seal reduces the inner diameter on the side of the formwork facing.
- An opening leading here into the sleeve is therefore smaller than the other internal diameter of the sleeve. This creates a particularly tight connection between an anchor rod inserted through it and the sleeve, in order to prevent concrete from flowing into the sleeve in an improved manner.
- the seal is basically made of a plastic which is more elastic compared to the plastic of which the sleeve is made.
- the plastic of the sleeve is otherwise basically a hard plastic.
- the sleeve has an internal thread.
- the internal thread creates a fastening possibility for such anchor holes, through which no anchor rod is pushed. It can then be screwed in from the side opposite the formwork facing, for example, a screw to be able to fasten something.
- FIG. 1 section through wall formworks installed opposite each other;
- FIG. 2 enlarged section from FIG. 1 ;
- FIG. 3 Sleeve
- FIG. 4 Sleeve with latching element
- FIG. 5 Sleeve with latching elements and seal
- FIG. 6 Sleeve with cap as cover
- FIG. 7 Sleeve with internal thread and latched latching elements
- FIG. 8 Sleeve with flange in funnel-shaped enlargement of the anchor hole
- FIG. 9 Sleeve with flange in step-shaped enlargement of the anchor hole.
- FIG. 10 Sleeve with resilient locking element.
- FIG. 1 shows a section through wall formworks installed opposite each other for the construction of walls with a formwork facing 1 and elements 2 which support the formwork facing.
- the elements 2 are beams made of steel.
- Anchor holes 3 pass through the supporting elements 2 .
- a sleeve 4 made of plastic is held in a force-fit manner.
- Each sleeve 4 is therefore held in the anchor hole 3 by static friction.
- the sleeve 4 extends from one end of the anchor hole 3 to the other end of the anchor hole 3 .
- On the outer face each sleeve 4 is flush with the anchor hole 3 .
- the inner wall of each anchor hole 3 is therefore completely covered by the sleeve 4 .
- the outer face of each sleeve 4 tightly borders the inner face of the anchor hole 3 at the side of the formwork facing so that no concrete can flow between the sleeve 4 and the anchor hole 3 from the side of the formwork facing.
- Each sleeve 4 has a flange 5 on the side of the formwork facing which rests on the beam 2 . Therefore, the sleeves 4 cannot be pulled outwards out of the anchor hole 3 .
- the flange 5 is flush with the formwork facing 1 . Thus, the flange 5 neither protrudes from the formwork facing 1 nor is it set back from the formwork facing 1 .
- the flange 5 is located in a recess of the formwork facing 1 .
- the gap between the flange 5 and the formwork facing 1 is minimal, so that no concrete or almost no concrete can flow in. This allows a correspondingly evenly smooth surface of a concrete wall to be produced even in the area of the anchor holes.
- Each circumferential surface of the sleeves 4 has grooves 6 on the outer face (see the enlarged illustration in FIG. 2 , which shows section V of FIG. 1 ).
- the grooves 6 run parallel to the longitudinal axis of each sleeve 4 .
- the grooves 6 extend towards the outside, i.e. to the end opposite the formwork facing. The grooves 6 therefore reach up to the locking devices 7 , which connect the anchor rod 8 to the wall formworks.
- the anchor rod 8 is inserted through the anchor holes 3 and protrudes on both outer sides. At the both ends of the anchor rod 8 there is a thread 9 , respectively, onto which the locking devices 7 are screwed.
- the section between the two threads 9 has a smooth surface or a sleeve with a smooth surface so that the anchor rod 8 can be pulled out after concreting.
- the grooves 6 reach close to the end which lies at the formwork facing 1 , without reaching this end. This leaves a tight connection 10 between an outer face of each sleeve 4 and the inner face of the associated anchor hole 3 , into which concrete cannot flow.
- FIG. 3 shows the sleeve 4 in a perspective view.
- Sleeve 4 is manufactured in one piece. Thus, no parts have been manufactured separately from each other and then joined together to form the sleeve.
- FIG. 4 shows a sleeve 4 manufactured in one piece, which additionally has one or more latching elements 11 .
- the one or more latching elements 11 protrude outwards and thus form projections.
- the one or more latching elements 11 can latch in corresponding recesses in the anchor hole. This allows the sleeve 4 to be held in an anchor hole in a form-fit manner.
- Latching elements 11 can be arranged distributed around the sleeve circumference. Latching elements 11 are preferably arranged above the grooves 6 . Since the material of the sleeve, too, is elastic to a certain degree, the latching elements can be made of a solid material. In this case, the latching elements are therefore not resiliently protruding lug.
- the grooves 6 shown in FIG. 4 run parallel to the longitudinal axis of the sleeve 4 and reach the end of the sleeve 4 that does not have a flange, so that the sleeve 4 can be inserted into an anchor hole with this end.
- FIG. 5 shows a section through a sleeve 4 which, compared to the sleeve 4 shown in FIG. 4 , additionally has seal.
- the seal is mounted on the flange 5 and has an upwardly protruding annular bead 12 and an inwardly directed annular sealing lip 13 projecting laterally from it.
- the seal is made of an elastic plastic material.
- the protruding bead 12 can provide a tight connection between a cap and the flange 5 so that an unused anchor hole can be closed particularly reliably by a cap.
- the inwardly directed sealing lip 13 can provide a particularly tight connection to an anchor rod inserted through it, as the sealing lip 13 reduces the internal diameter of the “sleeve” component.
- FIG. 5 illustrates that the latching elements 11 run ramp-shaped towards the flange 5 and thus ramp-shaped towards the formwork facing when the sleeve is inserted in an anchor hole.
- a cap 14 which closes the opening of the sleeve 4 on the side of the flange 5 , is shown in FIG. 6 . This can be connected to the sleeve 4 in a force-fit and/or form-fit manner
- Sleeve 4 may have an internal thread 14 as shown in FIG. 7 .
- the internal thread 15 can be used very reliably for fixing other components.
- the internal thread 15 is preferably limited to one half of the sleeve, so that the internal thread does not excessively hinder concrete from being knocked out.
- the internal thread 15 is preferably located in the half of the sleeve facing away from the side of the formwork facing, i.e. on the outside of the wall formwork. Concrete enters this area last, so that it is advantageous to limit the internal thread to the half at the outside.
- the internal thread 15 is used in one embodiment to fasten a cap 14 .
- a thread is then also attached to the cap 15 , which can be screwed into the internal thread 15 .
- the cap 15 can thus cover an unused anchor hole 3 particularly reliably.
- FIG. 7 also shows latching elements 11 which are latched in recesses 16 of the supporting element 2 .
- Concrete can be knocked out of sleeve 4 relatively easily due to the plastic material.
- the sleeve 4 is made of plastic, it can be knocked out of an anchor hole 3 even if latching elements 11 are latched in recesses of the anchor hole 3 .
- FIG. 8 shows a configuration with a flange 5 of the sleeve 4 , which is located in an enlargement 17 of the anchor hole 3 .
- the enlargement 17 is funnel-shaped.
- the inner diameter of the anchor hole 3 thus increases in the area of the enlargement 17 .
- the flange 5 rests on the bottom of the enlargement 17 and thus on the funnel-shaped wall of the enlargement 17 .
- the flange 5 is flush with the anchor hole 3 .
- the then visible surface of the flange 5 and the then visible edge of the anchor hole 3 i.e. the surface of the supporting element 2 adjacent to the enlargement 17 , form a common plane.
- the formwork facing 1 is laterally adjacent to the visible edge 18 of the anchor hole 3 .
- the formwork facing 1 is flush with the anchor hole 3 .
- the surface of the formwork facing 1 and the edge 18 of the anchor hole 8 which are then visible then form a common plane.
- a flat surface is then formed by the flange 5 , the visible edge 18 of the anchor hole 3 and the adjacent formwork facing 1 .
- the formwork facing 1 extends into a step-shaped recess 19 of the supporting element 2 and is thus held by the supporting element 2 .
- the extension 17 can also be step-shaped, for example, as shown in FIG. 9 .
- FIG. 10 shows a sleeve 4 manufactured in one piece which comprises one or more latching elements 11 .
- the one or more latching elements 11 protrude outwards and thus form projections.
- the latching elements 11 in this configuration are therefore elastically flexible relative to the rest of the sleeve.
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Abstract
Description
- The invention relates to a wall formwork for the construction of walls of concrete and a method of removing concrete from an anchor hole.
- A wall formwork comprises a formwork facing supported by supporting elements. The supporting elements can be longitudinal beams and cross beams. The supporting elements can be made of metal. Longitudinal beams and cross beams can form a frame for the wall formwork. Anchor holes pass through supporting elements.
- The two sides of a wall that is to be constructed are delimited by wall formworks, namely by formwork facings of the wall formworks. Opposite wall formworks are held by anchor systems. The anchor rods of the anchor systems are then inserted through anchor holes in the wall formwork and attached at their ends to the elements supporting the respective formwork facings by means of locking devices in such a way that at least the tensile force acting on the anchor rods during concreting is absorbed.
- Description of Related Art. In formwork technology, a distinction is made between adjustable and closing formwork. An adjustable formwork is a wall formwork which is installed first. Then the closing formwork is installed opposite the adjustable formwork. Adjustable formwork and closing formwork are connected to each other by one or more anchor systems during assembly. Concrete is poured into the space between the adjustable formwork and the closing formwork. A wall is created by the subsequent hardening of the concrete.
- No concrete should enter anchor holes. To avoid this, unused anchor holes are closed with a cap in accordance with publication WO 2014/048937 A1. In addition, an anchor seal is known from WO 2014/048937 A1, which seals a space between an anchor hole and an inserted anchor rod so that no liquid concrete can flow into the anchor hole.
- From the
publication DE 10 2009 010 722 A1 a sleeve is known which is inserted into anchor holes. The sleeve has a seal which, when installed, seals a space between anchor rod and anchor hole so that no liquid concrete can flow into the anchor hole. The seal is connected to the sleeve via a predetermined breaking point in order to be able to easily remove a damaged seal from the sleeve if necessary. There is a clearance between the sleeve and the anchor hole, so that the sleeve can be easily pulled out of an anchor hole after the seal has been released, namely towards the side of a wall formwork facing away from the formwork facing, i.e. outwards. - It is known from the
publication DE 10 2010 011 173 A1 that an anchor hole is provided with an outer sleeve and an inner sleeve which are interlocked with each other in order to fasten them to an anchor hole in a form-fit manner. There is an elastic seal to seal a gap between an anchor rod and the anchor hole at the formwork facing. Through the seal it is intended to prevent concrete from flowing into an anchor hole. - Despite the measures known from the prior art to prevent concrete from penetrating anchor holes, concrete can still get into anchor holes if seals are damaged or if an unused anchor hole has not been closed as planned.
- It is the problem to be solved to be able to remove concrete from an anchor hole of a wall formwork with little effort.
- The problem to be solved is solved by a wall formwork with the features of the first claim. An accessory claim relates to a method for a removal of concrete from an anchor hole. Advantageous embodiments result from the subclaims. The invention further relates to a sleeve for wall formwork.
-
Claim 1 relates to a wall formwork for the construction of walls with a formwork facing and elements which support the formwork facing. The supporting elements preferably consist of metal, in particular of a steel. They are usually beams running longitudinally and transversely behind a formwork facing. Beams on the edge side can be used as frames for the formwork facing. The formwork facing is attached to the beams, for example screwed or riveted to the beams. - Anchor holes pass through supporting elements. In each anchor hole, a sleeve made of plastic is held in a force-fit and/or form-fit manner An anchor hole therefore has a sleeve even if no anchor rod is inserted through the anchor hole. Each sleeve can therefore be held in the anchor hole by static friction, for example. The sleeve extends from one end of the anchor hole to the other end of the anchor hole. The outer face of the sleeve tightly abuts the inner face of the anchor hole, at least at the side of the formwork facing, so that no concrete can get between the sleeve and the anchor hole from the side of the formwork facing. The sleeve is preferably flush with the opposite side of the anchor hole. This means that the sleeve does not protrude from the anchor hole, nor is it set back from the anchor hole.
- If concrete enters the anchor hole unintentionally, hardened concrete can be knocked out of the anchor hole relatively easily due to the sleeve, e.g. with a hammer and chisel. If there was no sleeve, concrete can usually not be knocked out of the anchor hole with a hammer and chisel. If necessary, a damaged sleeve can also be removed relatively easily afterwards, for example by knocking it out. The use of a drill bit is therefore advantageously no longer necessary.
- In particular, the wall of the sleeve is completely closed. Thus, there is no opening within the wall through which concrete could pass. This further improves the ability to knock concrete out of the anchor hole relatively easily with a hammer and chisel.
- In an advantageous embodiment, the sleeve has a flange on the side of the formwork facing. By the flange it is prevented that the sleeve is pulled out from the side opposite the formwork facing. During concreting, the sleeve cannot be pushed out of the anchor hole with improved reliability.
- The flange is located in particular in a recess of the formwork facing. The flange does not rest on the formwork facing. Instead, the flange rests on a supporting element. Then, the formwork facing can adjoin laterally at the flange. It is advantageous if the flange is flush with the formwork facing.
- Alternatively, the flange is located in an enlargement of the anchor hole. The flange then rests on the bottom of the enlargement. It is advantageous that the flange is flush with the anchor hole. The surface of the flange and the edge of the anchor hole which are then visible then form a common plane. Then, the formwork facing can adjoin laterally at the edge of the anchor hole. The formwork facing is then advantageously flush with the anchor hole. The surface of the formwork facing and the edge of the anchor hole which are then visible then form a common plane.
- The diameter of the recess advantageously corresponds to the diameter of the flange in such a way that an essentially closed surface is provided. Between the flange and the formwork facing there is therefore preferably no gap into which concrete could flow.
- In an advantageous embodiment there are one or more anchor holes, which are closed by a cap on the side of the formwork facing. In particular, the cap is held in a force-fit and/or form-fit manner on the sleeve. Particularly, the cap can be removed without tools. With this embodiment, the number of anchor rods used can be adapted to the actual requirements in order to speed up assembly and disassembly.
- In one embodiment of the invention, the circumferential surface of the sleeve has grooves on the outer face. The grooves preferably run parallel to the longitudinal axis of the sleeve in order to be able to insert a sleeve into an anchor hole with particularly little effort. The grooves preferably extend to the end of the sleeve which is opposite the formwork facing. The grooves preferably reach to the end of the sleeve which is at the formwork facing without reaching this end. There is then a section that is free of grooves and which has a smooth surface. This makes it possible to provide a tight joint at the formwork facing in which no concrete can flow. However, excessive force is avoided to easily remove and insert a sleeve from the anchor hole for replacement when necessary.
- In one embodiment, the sleeve has one or more laterally outwardly projecting projections which are engaged with holes in the inner wall of an anchor hole to fix the sleeve in the anchor hole in a form-fit manner. By knocking it out, it is still possible to remove such a sleeve from an anchor hole if necessary, in order to be able to replace a damaged sleeve with an undamaged one. In particular, the projections run ramp-shaped towards the formwork facing to facilitate insertion of the sleeve into the anchor hole from the side of the formwork facing. Instead of projections, other form-fit elements can also be provided. For example, a flexible lug can be provided as a form-fit element, which protrudes from the outer face of the sleeve at an angle of less than 90°.
- In particular, the sleeve is manufactured in one piece. The sleeve may have been manufactured in one piece by injection moulding.
- The sleeve has in one embodiment a seal on the side on which the formwork facing is located, the seal consisting in particular of an elastomer and thus of an elastic material. In particular, the seal reduces the inner diameter on the side of the formwork facing. An opening leading here into the sleeve is therefore smaller than the other internal diameter of the sleeve. This creates a particularly tight connection between an anchor rod inserted through it and the sleeve, in order to prevent concrete from flowing into the sleeve in an improved manner. The seal is basically made of a plastic which is more elastic compared to the plastic of which the sleeve is made. The plastic of the sleeve is otherwise basically a hard plastic.
- In one embodiment of the invention, the sleeve has an internal thread. The internal thread creates a fastening possibility for such anchor holes, through which no anchor rod is pushed. It can then be screwed in from the side opposite the formwork facing, for example, a screw to be able to fasten something.
- In the following, the invention is further explained using figures. The figures show:
-
FIG. 1 : section through wall formworks installed opposite each other; -
FIG. 2 : enlarged section fromFIG. 1 ; -
FIG. 3 : Sleeve; -
FIG. 4 : Sleeve with latching element; -
FIG. 5 : Sleeve with latching elements and seal; -
FIG. 6 : Sleeve with cap as cover; -
FIG. 7 : Sleeve with internal thread and latched latching elements; -
FIG. 8 : Sleeve with flange in funnel-shaped enlargement of the anchor hole; -
FIG. 9 : Sleeve with flange in step-shaped enlargement of the anchor hole; and -
FIG. 10 : Sleeve with resilient locking element. -
FIG. 1 shows a section through wall formworks installed opposite each other for the construction of walls with a formwork facing 1 andelements 2 which support the formwork facing. Theelements 2 are beams made of steel. - Anchor holes 3 pass through the supporting
elements 2. In eachanchor hole 3, asleeve 4 made of plastic is held in a force-fit manner. Eachsleeve 4 is therefore held in theanchor hole 3 by static friction. Thesleeve 4 extends from one end of theanchor hole 3 to the other end of theanchor hole 3. On the outer face, eachsleeve 4 is flush with theanchor hole 3. The inner wall of eachanchor hole 3 is therefore completely covered by thesleeve 4. The outer face of eachsleeve 4 tightly borders the inner face of theanchor hole 3 at the side of the formwork facing so that no concrete can flow between thesleeve 4 and theanchor hole 3 from the side of the formwork facing. - Each
sleeve 4 has aflange 5 on the side of the formwork facing which rests on thebeam 2. Therefore, thesleeves 4 cannot be pulled outwards out of theanchor hole 3. Theflange 5 is flush with the formwork facing 1. Thus, theflange 5 neither protrudes from the formwork facing 1 nor is it set back from the formwork facing 1. Theflange 5 is located in a recess of the formwork facing 1. The gap between theflange 5 and the formwork facing 1 is minimal, so that no concrete or almost no concrete can flow in. This allows a correspondingly evenly smooth surface of a concrete wall to be produced even in the area of the anchor holes. - Each circumferential surface of the
sleeves 4 hasgrooves 6 on the outer face (see the enlarged illustration inFIG. 2 , which shows section V ofFIG. 1 ). Thegrooves 6 run parallel to the longitudinal axis of eachsleeve 4. Thegrooves 6 extend towards the outside, i.e. to the end opposite the formwork facing. Thegrooves 6 therefore reach up to thelocking devices 7, which connect theanchor rod 8 to the wall formworks. - The
anchor rod 8 is inserted through the anchor holes 3 and protrudes on both outer sides. At the both ends of theanchor rod 8 there is athread 9, respectively, onto which thelocking devices 7 are screwed. The section between the twothreads 9 has a smooth surface or a sleeve with a smooth surface so that theanchor rod 8 can be pulled out after concreting. - The
grooves 6 reach close to the end which lies at the formwork facing 1, without reaching this end. This leaves atight connection 10 between an outer face of eachsleeve 4 and the inner face of the associatedanchor hole 3, into which concrete cannot flow. -
FIG. 3 shows thesleeve 4 in a perspective view.Sleeve 4 is manufactured in one piece. Thus, no parts have been manufactured separately from each other and then joined together to form the sleeve. -
FIG. 4 shows asleeve 4 manufactured in one piece, which additionally has one or morelatching elements 11. The one or morelatching elements 11 protrude outwards and thus form projections. The one or morelatching elements 11 can latch in corresponding recesses in the anchor hole. This allows thesleeve 4 to be held in an anchor hole in a form-fit manner. Latchingelements 11 can be arranged distributed around the sleeve circumference. Latchingelements 11 are preferably arranged above thegrooves 6. Since the material of the sleeve, too, is elastic to a certain degree, the latching elements can be made of a solid material. In this case, the latching elements are therefore not resiliently protruding lug. - The
grooves 6 shown inFIG. 4 run parallel to the longitudinal axis of thesleeve 4 and reach the end of thesleeve 4 that does not have a flange, so that thesleeve 4 can be inserted into an anchor hole with this end. -
FIG. 5 shows a section through asleeve 4 which, compared to thesleeve 4 shown inFIG. 4 , additionally has seal. The seal is mounted on theflange 5 and has an upwardly protrudingannular bead 12 and an inwardly directed annular sealinglip 13 projecting laterally from it. The seal is made of an elastic plastic material. The protrudingbead 12 can provide a tight connection between a cap and theflange 5 so that an unused anchor hole can be closed particularly reliably by a cap. The inwardly directed sealinglip 13 can provide a particularly tight connection to an anchor rod inserted through it, as the sealinglip 13 reduces the internal diameter of the “sleeve” component. -
FIG. 5 illustrates that the latchingelements 11 run ramp-shaped towards theflange 5 and thus ramp-shaped towards the formwork facing when the sleeve is inserted in an anchor hole. - A
cap 14, which closes the opening of thesleeve 4 on the side of theflange 5, is shown inFIG. 6 . This can be connected to thesleeve 4 in a force-fit and/or form-fit manner -
Sleeve 4 may have aninternal thread 14 as shown inFIG. 7 . As thesleeve 4 cannot be pulled outwards out of a wall formwork, theinternal thread 15 can be used very reliably for fixing other components. Theinternal thread 15 is preferably limited to one half of the sleeve, so that the internal thread does not excessively hinder concrete from being knocked out. - The
internal thread 15 is preferably located in the half of the sleeve facing away from the side of the formwork facing, i.e. on the outside of the wall formwork. Concrete enters this area last, so that it is advantageous to limit the internal thread to the half at the outside. - The
internal thread 15 is used in one embodiment to fasten acap 14. A thread is then also attached to thecap 15, which can be screwed into theinternal thread 15. Thecap 15 can thus cover anunused anchor hole 3 particularly reliably. -
FIG. 7 also shows latchingelements 11 which are latched inrecesses 16 of the supportingelement 2. - Concrete can be knocked out of
sleeve 4 relatively easily due to the plastic material. As thesleeve 4 is made of plastic, it can be knocked out of ananchor hole 3 even if latchingelements 11 are latched in recesses of theanchor hole 3. -
FIG. 8 shows a configuration with aflange 5 of thesleeve 4, which is located in anenlargement 17 of theanchor hole 3. Theenlargement 17 is funnel-shaped. The inner diameter of theanchor hole 3 thus increases in the area of theenlargement 17. Theflange 5 rests on the bottom of theenlargement 17 and thus on the funnel-shaped wall of theenlargement 17. Theflange 5 is flush with theanchor hole 3. The then visible surface of theflange 5 and the then visible edge of theanchor hole 3, i.e. the surface of the supportingelement 2 adjacent to theenlargement 17, form a common plane. The formwork facing 1 is laterally adjacent to thevisible edge 18 of theanchor hole 3. The formwork facing 1 is flush with theanchor hole 3. The surface of the formwork facing 1 and theedge 18 of theanchor hole 8 which are then visible then form a common plane. A flat surface is then formed by theflange 5, thevisible edge 18 of theanchor hole 3 and the adjacent formwork facing 1. The formwork facing 1 extends into a step-shapedrecess 19 of the supportingelement 2 and is thus held by the supportingelement 2. - The
extension 17 can also be step-shaped, for example, as shown inFIG. 9 . -
FIG. 10 shows asleeve 4 manufactured in one piece which comprises one or morelatching elements 11. The one or morelatching elements 11 protrude outwards and thus form projections. Above each latchingelement 11 there is aslot 20. This allows each latchingelement 11 to pivot resiliently relative to the sleeve, which facilitates inserting thesleeve 4 into an anchor hole. The latchingelements 11 in this configuration are therefore elastically flexible relative to the rest of the sleeve. - The foregoing invention has been described in accordance with the relevant legal standards, thus the description is exemplary rather than limiting in nature. Variations and modifications to the disclosed embodiment may become apparent to those skilled in the art and fall within the scope of the invention.
Claims (16)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019201395.3A DE102019201395A1 (en) | 2019-02-04 | 2019-02-04 | Wall formwork with sleeve for anchor holes, sleeve and cleaning process |
DE102019201395.3 | 2019-02-04 | ||
PCT/EP2020/052217 WO2020160988A1 (en) | 2019-02-04 | 2020-01-30 | Wall formwork with sleeve for anchor holes, sleeve and cleaning method |
Publications (1)
Publication Number | Publication Date |
---|---|
US20220074215A1 true US20220074215A1 (en) | 2022-03-10 |
Family
ID=69423305
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US17/416,675 Pending US20220074215A1 (en) | 2019-02-04 | 2020-01-30 | Wall formwork with sleeve for anchor holes, sleeve and cleaning method |
Country Status (6)
Country | Link |
---|---|
US (1) | US20220074215A1 (en) |
EP (1) | EP3921491A1 (en) |
CA (1) | CA3118183A1 (en) |
CL (1) | CL2021001990A1 (en) |
DE (1) | DE102019201395A1 (en) |
WO (1) | WO2020160988A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115370143A (en) * | 2022-08-09 | 2022-11-22 | 晟通科技集团有限公司 | Reinforcing device and pouring method of cast-in-place concrete wall |
Citations (3)
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US3693931A (en) * | 1969-04-30 | 1972-09-26 | Burke Concrete Accessories | Apparatus for constructing concrete forms |
US4899978A (en) * | 1988-12-16 | 1990-02-13 | Gates & Sons, Inc. | Locking bracket for holding tie rod ends |
US8727302B2 (en) * | 2010-02-18 | 2014-05-20 | Peri Gmbh | Anchor system of a concrete wall formwork |
Family Cites Families (9)
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DE1899151U (en) * | 1964-06-08 | 1964-08-20 | Walter Hoff | SPACERS FOR CONCRETE FORMWORKS. |
DE2908284C2 (en) * | 1979-03-03 | 1981-03-19 | Peri-Werk Artur Schwörer KG, 7912 Weißenhorn | Formwork panel for concrete walls |
DE3126348A1 (en) * | 1981-07-03 | 1983-02-03 | Emil Steidle Gmbh & Co, 7480 Sigmaringen | Frame shuttering |
DE3520736A1 (en) * | 1984-12-14 | 1986-12-11 | Emil Steidle Gmbh & Co, 7480 Sigmaringen | Closure for turnbuckle throughbores |
DE102009010722A1 (en) | 2009-02-27 | 2010-09-02 | Qualiplast Gmbh | Concrete wall formwork has formwork shell and supporting elements, where formwork halves are arranged on both sides of wall, and anchor rod is plugged in area of anchor holes through sleeve, where sleeve is provided with seal |
DE102010011173A1 (en) | 2010-03-12 | 2011-09-15 | Peri Gmbh | Seal arrangement for sealing aperture in formwork board for formwork tie, has outer sleeve for being accommodated in aperture, inner sleeve accommodated in outer sleeve, and radially inward rising elastic seal formed in inner sleeve |
DE102012217823A1 (en) | 2012-09-28 | 2014-04-03 | Harsco Infrastructure Services Gmbh | Wall formwork with sealing system |
DE102014012037A1 (en) * | 2014-08-16 | 2016-02-18 | Redima Ag | Anchoring device of a concrete wall formwork, formwork element and method for mounting an anchoring device |
EP3574167B1 (en) * | 2017-01-27 | 2023-10-18 | MEVA Schalungs-Systeme GmbH | Sealing a lead-through of a anchor rod through a panel formwork element |
-
2019
- 2019-02-04 DE DE102019201395.3A patent/DE102019201395A1/en active Pending
-
2020
- 2020-01-30 CA CA3118183A patent/CA3118183A1/en active Pending
- 2020-01-30 EP EP20703183.2A patent/EP3921491A1/en active Pending
- 2020-01-30 WO PCT/EP2020/052217 patent/WO2020160988A1/en unknown
- 2020-01-30 US US17/416,675 patent/US20220074215A1/en active Pending
-
2021
- 2021-07-29 CL CL2021001990A patent/CL2021001990A1/en unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3693931A (en) * | 1969-04-30 | 1972-09-26 | Burke Concrete Accessories | Apparatus for constructing concrete forms |
US4899978A (en) * | 1988-12-16 | 1990-02-13 | Gates & Sons, Inc. | Locking bracket for holding tie rod ends |
US8727302B2 (en) * | 2010-02-18 | 2014-05-20 | Peri Gmbh | Anchor system of a concrete wall formwork |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115370143A (en) * | 2022-08-09 | 2022-11-22 | 晟通科技集团有限公司 | Reinforcing device and pouring method of cast-in-place concrete wall |
Also Published As
Publication number | Publication date |
---|---|
EP3921491A1 (en) | 2021-12-15 |
WO2020160988A1 (en) | 2020-08-13 |
CL2021001990A1 (en) | 2022-01-21 |
CA3118183A1 (en) | 2020-08-13 |
DE102019201395A1 (en) | 2020-08-06 |
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