DK2865821T3 - Method of anchoring an element of transverse force on a building part - Google Patents
Method of anchoring an element of transverse force on a building part Download PDFInfo
- Publication number
- DK2865821T3 DK2865821T3 DK14190142.1T DK14190142T DK2865821T3 DK 2865821 T3 DK2865821 T3 DK 2865821T3 DK 14190142 T DK14190142 T DK 14190142T DK 2865821 T3 DK2865821 T3 DK 2865821T3
- Authority
- DK
- Denmark
- Prior art keywords
- notch
- transverse force
- building
- building part
- recess
- Prior art date
Links
- 238000004873 anchoring Methods 0.000 title claims description 19
- 238000000034 method Methods 0.000 title claims description 18
- 238000009415 formwork Methods 0.000 claims description 22
- 238000010276 construction Methods 0.000 claims description 21
- 238000005266 casting Methods 0.000 claims description 19
- 230000006378 damage Effects 0.000 claims description 3
- 230000002441 reversible effect Effects 0.000 claims description 2
- 239000011159 matrix material Substances 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 description 18
- 238000013022 venting Methods 0.000 description 18
- 239000004570 mortar (masonry) Substances 0.000 description 9
- 230000002787 reinforcement Effects 0.000 description 9
- 239000011796 hollow space material Substances 0.000 description 8
- 230000003014 reinforcing effect Effects 0.000 description 7
- 238000011065 in-situ storage Methods 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000012858 resilient material Substances 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/48—Dowels, i.e. members adapted to penetrate the surfaces of two parts and to take the shear stresses
- E04B1/483—Shear dowels to be embedded in concrete
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
Description
Method for anchoring a transverse force element to a building part Description
The present invention relates to a method for anchoring a transverse force element for connecting building parts to a building part to be constructed from concrete.
In the field of building construction, it is sometimes the case that building parts have to be statically interconnected by means of an expansion or insulating joint. For this purpose, flexurally rigid reinforcement elements are used, which are referred to in the following as transverse force elements. In this context, the term transverse force element is used to refer to reinforcement elements which consist not only of a thin bar material, but also of a relatively flexurally rigid sleeve or profile material, and thus are capable, despite having a horizontal extension direction, of also absorbing and transferring the transverse forces extending transversely to said horizontal extension direction by way of the joint between two building parts to be interconnected. A transverse force element of this type, in the form of a transverse force dowel, is described for example in EP 1 528 169 Bl.
During the construction of building parts from concrete, reinforcement elements of this type can be suitably positioned before the casting, and then sealed in at least in part during the construction of the building part. However, it is often provided that building parts are added and statically interconnected retrospectively. Thus for example buildings are constructed as a shell construction, and add-on parts such as balconies or awnings are added and statically connected to the otherwise finished building only retrospectively. Since buildings nowadays generally have external thermal insulation, through which a cold bridge must not lead, add-on parts of this type must be connected by way of a joint filled with insulating material by means of corresponding transverse force elements of the type described at the outset. In this case, it is often necessary, during the construction of the building, for there to be no protruding parts such as reinforcement elements provided, since construction work is impeded thereby, and in particular, placing a scaffolding is made more difficult thereby. It is therefore desired to be able to anchor corresponding reinforcement elements to the building retrospectively. A method for retrospectively anchoring tensile-force reinforcement elements is described in EP 2 410 096 A2. In this case, during the construction of building parts, in particular floors, recesses which are open at the top and provided with undercut regions are provided by means of corresponding recess formers, in which recesses tensile-force reinforcement elements can subsequently be inserted and covered with concrete.
Another method is described in WO 2004/002701 A2. In this case, elongate, resilient recess formers comprising undercut regions are used, the diameter of which decreases under tension so that during the construction of a building part, the recess formers can also be embedded in the liquid concrete and simply removed once again after the concrete has set. Furthermore, by means of a tube, a terminal filling opening can be provided, which is used to inject mortar. In the recesses which are created in this manner, reinforcing bars can be anchored at a later time.
Another method is described in US 5 366 672. This document shows a coupler for connecting reinforcing bars to the junction point of adjacent concrete components. The coupler is screwed onto the end face of a reinforcing bar and cast together therewith in a first concrete part. A reinforcing bar protruding from the second concrete part is screwed into the coupler, and the coupler is subsequently covered with sealing mortar by way of corresponding lateral filling and venting openings. In this manner, two concrete parts which are joined together end-to-end are interconnected. A method for anchoring a transverse force element according to the preamble of claim 1 is disclosed in US 2010/0199589. For this purpose, a recess former is embedded in the end face of a building part, which former consists of a guide tube and an end-face fixing chamber. A transverse force element, which is fixed in a second building part, is inserted in the guide tube and comprises a corrugated region at the end thereof, which region can be fixed in the fixing chamber by a casting compound. EP 0 651 101 discloses an internally hollow connection element which can be cemented in a recess in that mortar can be pressed into the inside of the connection element through a lateral guide. Said mortar passes out of the end faces and fills the gap between the connection element and the recess.
The object of the invention is that of indicating a method for retrospectively securely anchoring a transverse force element to a building part to be constructed from concrete. In addition, a corresponding, preferably prefabricated building part is to be indicated, which is prepared for anchoring a transverse force element.
This object is solved with respect to the method by the features of the claim 1 advantageous embodiments can be found in the dependent claims.
According to the invention, in order to anchor a transverse force element to a building part to be constructed form concrete during the construction of the building part, a substantially horizontal recess, which recess is provided with undercut regions and is enclosed on all sides perpendicularly to the extension direction thereof, is provided in the building part by arranging a corresponding recess former in a formwork for the building part. The recess is further provided with at least two substantially vertical filling and venting openings. A first of the at least two vertical filling and venting openings is arranged in a terminal region of the recess, and a second of the at least two vertical filling and venting openings is arranged in a front region of the recess. After the construction of the building part, the transverse force element is introduced into the recess along the extension direction thereof, and the recess is filled with a casting compound, in particular sealing mortar or concrete, by way of at least one of the filling and venting openings. In so doing, the hollow space of the recess remaining around the transverse force element is filled completely.
In this way, by simple means, a secure anchoring, with an interlocking fit, of the transverse force element in a previously constructed building part is achieved, which anchoring can absorb large transverse forces; in particular, such an anchoring is suitable for retrospectively fixing elevated balconies, i.e. balconies which are supported with respect to the floor by means of their own supporting structure, to a building and for statically connecting said balconies to said building. In this case, a transverse force element can be anchored to the building, and a transverse force element which is connected to the building can be anchored to a retrospectively added balcony slab in accordance with the method according to the invention.
By means of the at least two vertical filling and venting openings, it is ensured that sufficient casting compound is injected through the filling opening, and the hollow space to be filled is simultaneously vented by the venting opening so that no hollow spaces remain.
If a first opening is arranged as a filling opening in a terminal region of the recess, and a second opening is arranged as a venting opening in a front region of the recess, then a complete filling of the hollow space can be reliably monitored in that casting compound is injected until said compound passes out again through the venting opening.
The filling and venting openings can be produced as early as during the construction of the building part by applying corresponding sleeves or tubes to the recess former. Alternatively, however, it is also possible to introduce the filling and venting openings in the form of bores after the construction of the building part.
As recess formers, a hollow body, in particular a corrugated jacket tube can be used, which can remain in the building part as lost formwork.
However, it is also possible to remove the recess former after the construction of the building part by destruction or reversible deformation of the recess former. In this case, it is particularly advantageous to use resilient recess formers which undergo a change in dimensions under the effect of tensile force and thus can be removed in a non-destructive manner and reused after the construction of the building part.
As a transverse force element, a hollow profile having a round or polygonal cross section which does not change over the length of the element, for example an upright rectangular cross section, can be used. Likewise, it is of course also possible, instead of hollow profiles, to use angled profile cross sections such as double-T profiles or the like, which are constructed and arranged in accordance with the main stress directions.
If the transverse force element is in the form of a hollow profile which is preferably open at the end thereof, then during the filling of the hollow space, the casting compound used, for example sealing mortar or concrete, can flow into the hollow profile and thus provide the transverse force element with additional stability.
The transverse force element can also have a vertical bearing plate, up to which said transverse force element is inserted into the recess, so that the bearing plate rests against the building part and closes the recess at the end thereof. As a result, it is possible to omit a separate closure on the end face during the filling of the recess, and the bearing plate allows additional support of the transverse force element on the relevant building part.
In addition, the transverse force element can have a back-anchoring element, preferably a bracket, as a result of which an additional stability can also be achieved against tensile loading.
Accordingly, a concrete building part according to the invention comprises an elongate recess extending from an end face substantially perpendicularly thereto and into the building part, which recess has undercut regions and is provided with at least two filling and venting openings which are arranged spaced apart from one another, extend substantially vertically to the recess and extend as far as an upper face of the building part, for injecting a casting compound. A building part of this type can be prefabricated in a factory and delivered to a construction site as a finished part in order to be statically connected to other building parts there, in that corresponding transverse force elements are anchored and sealed in the prefabricated recesses.
As described at the outset, by means of a transverse force element which is anchored according to the invention, a joint between two statically interconnected building parts can be spanned, which joint can be filled with a commercially available insulating material for the purpose of thermally insulating the building. In particular if the transverse force element is produced from a material having a low thermal conductivity, such as stainless steel, the creation of a cold bridge is effectively prevented by the thermal insulation of the building.
Further features and advantages of the present invention can be found in the following description of embodiments with reference to the drawings, in which:
Fig. 1 is a sectional view through a building part comprising a recess made through a corrugated jacket tube in a first embodiment,
Fig. 2 the building part from Fig. 1 comprising a transverse force element anchored in the recess,
Fig. 3 a sectional view through a building part comprising a recess made through a resilient recess former in a second embodiment, and
Fig. 4 the building part from Fig. 3 comprising a transverse force element anchored in the recess.
Fig. 1 and 2 show a first embodiment for anchoring a transverse force element in or to a building part 1. The building part 1 can be in particular a floor of a building cast from in-situ concrete.
On an end face 1' pointing outwards, the floor 1 comprises an elongate recess 2 extending perpendicularly to the end face 1' and into the floor 1. The recess 2 is in the form of a corrugated jacket tube 3 which is used as a recess 2 former and is closed at the end thereof, which tube has been used as a formwork used for concreting and, during the construction of the floor from liquid in-situ concrete, has been completely embedded therein. The resulting recess 2 is surrounded by in-situ concrete on all sides perpendicularly to the extension direction thereof (i.e. in the radial direction).
The recess 2 has a terminal filling opening 4 which extends vertically from the corrugated jacket tube 3 as far as the upper face of the floor 1. In addition, in the front region pointing towards the end face 1', the recess 2 comprises a vertical venting opening 5, which likewise extends from the corrugated jacket tube as far as the upper face of the floor 1. Filling and venting openings 4, 5 are formed by corresponding sleeves which likewise have been fixed to the corrugated jacket tube 3 and connected thereto before the concreting of the floor 1. Alternatively, it would also be possible to create the filling and venting openings 4, 5 after setting the concreted floor 1 by drilling the recess 2.
By corrugating the corrugated jacket tube 3, the recess 2 has undercuts, which ensure an inner interlocking connection of a casting compound to be filled in subsequently with the floor 1. Conventionally, building parts constructed form concrete have a reinforcement composed of a plurality of reinforcing bars 6 arranged spaced apart from one another, which extend perpendicularly to the drawing plane in Fig. 1 by way of example. In this case, it is advantageous in particular if the corrugated jacket tube 3 which is used as a recess former is arranged in direct contact with or between rows of reinforcing bars 6 of this type so that good transmission of transverse forces, which act on a transverse force element subsequently sealed in the recess 2, to the reinforcement of the building part 1 is achieved.
Fig. 2 shows how a transverse force element 7, what is known as a transverse force dowel, is inserted in the recess 2 and anchored therein with an interlocking fit by means of a casting compound 8. The transverse force dowel 7 takes the form of a flexurally rigid hollow profile and is closed at the end thereof in the embodiment shown. After the introduction of the transverse force dowel 7 into the recess 2, a casting compound 8 is injected by way of the filling opening 4. For this purpose, the end face 1' of the recess 2 is closed around the transverse force dowel 7 by a corresponding formwork. When the casting compound 8 passes out of the venting opening 5, it is ensured that the hollow space of the recess 2 remaining around the transverse force dowel 7 is filled completely.
Various hardening or setting fillers are suitable as casting compounds, such as sealing mortar or concrete, in particular a sealing mortar having a grain size of up to 1 mm. In addition, however, various cement adhesives, multi-component injection mortars, curable synthetic resins or the like can also be used.
If the transverse force dowel is designed to be open at the rear end thereof, then the casting compound 8 can also flow into the hollow profile of the transverse force dowel 7 and thereby provide said dowel with additional stability. In the first embodiment, the corrugated jacket tube 3 remains in the floor 1 as lost formwork. Alternatively, however, it would also be conceivable for the corrugated jacket tube 3 to be formed from a thin-walled aluminium, to release and remove said tube from the surrounding in-situ concrete by destruction, that is to say for example compression or crumpling.
Fig. 3 and 4 show a second embodiment for anchoring according to the invention. In this case, like parts and parts having like effects are denoted by the same reference signs. Instead of a corrugated jacket tube as in the first embodiment, in this case what is known as a formwork sock 3' is used as a recess former. Said formwork sock 3' consists of an elastomer such as silicone rubber and is therefore elastically deformable. The formwork sock 3' is designed to be hollow inside, a supporting body 3" being inserted in the hollow space so that the formwork sock 3' cannot collapse. On the outside thereof, the formwork sock 3' comprises a structure which forms undercuts in the subsequent recess 2.
Before the construction of the floor 1, the formwork sock 3' is inserted between the reinforcing bars 6 into a corresponding formwork for the floor, which formwork is then filled with in-situ concrete. After the concrete has set, the formwork sock 3' can be removed. For this purpose, the supporting body 3" is firstly pulled out of the formwork sock. The formwork sock 3' can then easily be removed, since the resilient material elongates under the effect of tensile force and thereby undergoes a reduction in cross section. Corresponding attachments to the recess of the filling and venting openings 4, 5 can also be moulded directly on the formwork sock 3'. After the removal of the formwork sock 3', the recess 2 remains as a negative, in which the transverse force dowel 7 can be anchored as shown in Fig. 4. For this purpose, again as in the first embodiment, a casting compound 8 is injected through the filling opening 4 until said compound passes out again to the venting opening 5.
In the case of the two-part formwork used in the second embodiment, the supporting body 3" acts as a displacement body, whereas the resilient formwork sock 3’ creates undercut regions in the subsequent recess 2.
The dimensioning of the recess 2 in the embodiments shown is selected in such a way that a hollow space of approximately 2 cm running around the transverse force element 7 remains for filling with the casting compound 8. In this case, the cross section of the recess former 3, 3' is not necessarily circular, but rather can also have other cross-sectional contours such as a rectangular contour depending on the design of the transverse force element 7.
At the end of the transverse force dowel 7, an anchoring element for example in the form of a bracket can additionally also be provided, which is embedded in the casting compound 8 as back-anchoring.
In the embodiments described, the anchoring of the transverse force dowel 7 takes place in a floor 1 of a building. In the same way, however, anchoring can also take place in a retrospectively added building part, for example the floor slab of a balcony. For this purpose, transverse force dowels such as in EP 1 528 169 Bl, which is mentioned at the outset, can each be fixed to a head plate by means of corresponding fixing anchors, for example dowel/screw connections, on an existing building. On transverse force dowels of this type which are fixed to the building, a balcony slab for an upright add-on balcony can now be guided, the transverse force dowels engaging in corresponding end-face recesses 2 in the balcony slab, and the remaining hollow space of the recesses 2 subsequently being filled in each case in the previously described manner by injection of a casting compound by way of the vertical filling openings 4.
Claims (8)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE201310111779 DE102013111779A1 (en) | 2013-10-25 | 2013-10-25 | Method for anchoring a shear force reinforcement element on a building part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DK2865821T3 true DK2865821T3 (en) | 2017-04-10 |
Family
ID=51830200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK14190142.1T DK2865821T3 (en) | 2013-10-25 | 2014-10-23 | Method of anchoring an element of transverse force on a building part |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2865821B1 (en) |
| DE (1) | DE102013111779A1 (en) |
| DK (1) | DK2865821T3 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210025157A1 (en) | 2018-03-31 | 2021-01-28 | Precast India Infrastructures Pvt. Ltd. | Precast structural element and method for connecting the precast structural element to each other |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4017032A1 (en) * | 1990-05-26 | 1991-11-28 | Karl Eischeid | DEVICE FOR FASTENING ANCHOR ROD IN A DRILL HOLE |
| US5366672A (en) * | 1993-03-18 | 1994-11-22 | Erico International Corporation | Method of forming concrete structures with a grout splice sleeve which has a threaded connection to a reinforcing bar |
| CH685951A5 (en) * | 1993-03-24 | 1995-11-15 | Ferwood S A | Method of manufacturing a thermosetting resin preparation of destiny has particular application in the realization of wooden buildings. |
| JP3272840B2 (en) * | 1993-10-30 | 2002-04-08 | 株式会社豊夢 | Connector, connector unit, and connector connecting them |
| DE4409477A1 (en) * | 1994-03-19 | 1995-09-21 | Schoeck Bauteile Gmbh | Noise damping supporting component |
| FR2768449A1 (en) * | 1997-09-15 | 1999-03-19 | Paul Gauthier | Joint for wooden building beam |
| NL1020949C2 (en) | 2002-06-27 | 2004-01-16 | Connector Vinkeveen B V | Method for manufacturing a cavity in a concrete part as well as concrete part provided with a reinforcement. |
| DE20316774U1 (en) | 2003-10-30 | 2004-02-12 | Schöck Entwicklungsgesellschaft mbH | Component for the particular subsequent spaced-apart attachment of components to building parts |
| GB0717254D0 (en) * | 2007-09-05 | 2007-10-17 | Ancon Ltd | Sheer connector |
| DE102008041928A1 (en) * | 2008-09-09 | 2010-03-11 | Martin Pschierer | Injection anchor i.e. bracket, for injection fixation of e.g. French balcony in borehole in wall of building, has rod whose lateral surface comprises opening that is provided for channel, and another opening that is in connection to channel |
| DE102010027661B4 (en) | 2010-07-19 | 2012-08-02 | Schöck Bauteile GmbH | Shuttering apparatus and method for providing a recess during casting of a building component |
| DE102012103546A1 (en) * | 2012-04-23 | 2013-10-24 | Johann Moissl | Anchor for fixing at walls of protruding structure e.g. awning, has filling channels guided from front end side of anchor to last profile elevation of outer profile, where channels are diagonally arranged opposite to mantle of anchor body |
-
2013
- 2013-10-25 DE DE201310111779 patent/DE102013111779A1/en not_active Withdrawn
-
2014
- 2014-10-23 EP EP14190142.1A patent/EP2865821B1/en active Active
- 2014-10-23 DK DK14190142.1T patent/DK2865821T3/en active
Also Published As
| Publication number | Publication date |
|---|---|
| EP2865821B1 (en) | 2017-03-01 |
| DE102013111779A1 (en) | 2015-04-30 |
| EP2865821A1 (en) | 2015-04-29 |
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