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EP 1 114 904 B1 |
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EUROPEAN PATENT SPECIFICATION |
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Mention of the grant of the patent: |
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26.10.2005 Bulletin 2005/43 |
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Date of filing: 05.01.2001 |
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International Patent Classification (IPC)7: E04H 12/22 |
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Fixing structure and method for the installation thereof
Befestigungskonstruktion und Installationsverfahren
Construction de fixation et procédé d'installation
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Designated Contracting States: |
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AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
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Priority: |
06.01.2000 NL 1014031
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Date of publication of application: |
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11.07.2001 Bulletin 2001/28 |
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Proprietor: R.C.M. Ankertec B.V. |
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3645 GV Vinkeveen (NL) |
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Inventor: |
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- Van Rijn, Robertus Cornelis Maria
3645 GV Vinkeveen (NL)
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Representative: van Westenbrugge, Andries et al |
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Nederlandsch Octrooibureau
P.O. Box 29720 2502 LS The Hague 2502 LS The Hague (NL) |
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References cited: :
US-A- 3 323 765
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US-A- 5 505 033
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Note: Within nine months from the publication of the mention of the grant of the European
patent, any person may give notice to the European Patent Office of opposition to
the European patent
granted. Notice of opposition shall be filed in a written reasoned statement. It shall
not be deemed to
have been filed until the opposition fee has been paid. (Art. 99(1) European Patent
Convention).
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[0001] The present invention relates to a fixing structure for joining a column or the like
to a concrete structure which is to be poured, comprising at least two anchor components
which are to be cast in situ and are located some distance apart, which anchor components
are provided with screw thread for fixing said column or the like, the fixing structure
comprising a fixing member in which said anchor components have been fitted.
[0002] A structure of this type is disclosed in US 5 505 033 A. In this structure the foot
of a column is placed on a concrete block and the column is positioned with the aid
of cast-in tie anchors.
[0003] In the general state of the art two or more anchors are cast in a concrete structure
in order to fix a column or the like to the concrete structure. These anchors are
generally provided at the end with screw thread on which nuts later have to be fitted
in order to fix the column in place. The distance between the anchors must, of course,
correspond to the distance between the holes made in the base plate of the column
and to this end the anchors are held apart with the aid of a wooden template when
pouring.
[0004] After pouring, such a template is removed by breaking out or the like. Nuts then
have to be fitted on the screw thread. It is also possible that these nuts are already
present. The column is then placed in position, bearing on the nuts. Yet further nuts
are fitted on the upper side of the column in order to fix the column in place. Correct
positioning of the column can be ensured by adjusting the nuts which support the column.
The gap between the foot of the column and the concrete is then grouted under. Such
undergrouting takes place by filling the gap concerned with the aid of an easily workable
concrete material. This is an accurate and time-consuming operation. After all, it
must be ensured that the gap between the column and the poured structure is completely
filled with concrete because the weight of the column and any further structure supported
by the latter must be transferred here later on. A method that is generally customary
is to place a heavy object, such as a paving stone or the like, on three sides of
a square column, after which the mix is tamped with a block of wood or the like on
the side that is still open in order thus to achieve adequate compaction. It is understood
that this is on the one hand a time-consuming activity but, on the other hand, an
activity which is not readily controllable.
[0005] As a result of the use of the wooden template and the undergrouting described above,
fixing a column or the like to a concrete structure is a time-consuming activity.
[0006] The aim of the present invention is to avoid this disadvantage and to provide a fixing
structure with which a column can be placed in position and adjusted quickly and effectively.
[0007] This aim is achieved with a structure as described above in that said fixing member
is provided, between the opening for said anchor components, with adjusting means
for said column or the like, which adjusting means comprise a support that can be
moved outwards (upwards) with respect to said member. As a result of the use of a
fixing member to which the anchor components are fixed, as well as adjusting means
arranged therein, on the one hand the anchors can be positioned very accurately before
pouring and, on the other hand, the column can be adjusted very accurately without
time-consuming adjustment of nuts on the anchors being required. Furthermore, it is
possible after undergrouting to apply some stress to the nuts on the anchors, so that
the structure is pretensioned.
[0008] The fixing member can be a plate-shaped member. If, however, there are concerns that
cavities could arise as a result of the presence of air beneath the plate, it is possible
to construct the plate as one or more strip-shaped parts. In the case of the embodiment
with strip-shaped parts it is possible to provide various strip-shaped parts which
are attached to one another. By this means, matching to the spacing between the anchor
components can be provided in a simple manner.
[0009] The plate and/or other structure by means of which the anchor components are placed
in the desired position can be removable or non-removable. Especially if plastic parts
are used, removability can be achieved in a simple manner. This takes place after
the adjusting means have been cast in situ. Moreover, when plastic parts are used
in combination with steel anchor components locking of the anchor components to the
plastic plate or strip can be achieved in a simple manner. Plastic must be understood
to mean both hard plastics and permanently deformable plastics, such as rubber-like
materials. Rubber-like materials in particular can be very easily removed.
[0010] Preferably, the fixing means comprise one or more supporting or adjusting bolts accommodated
in a sleeve or other structure in the fixing member.
[0011] The position of the column can be controlled by moving such a supporting or adjusting
bolt outwards. Reaction can be generated by fitting the fixing nuts on the threaded
anchors. These fixing nuts are essential for subsequent fixing of the column to the
fixing structure.
[0012] The introduction of concrete can be yet further simplified if pourable concrete of
thin consistency or another settable material is used that has an appreciable supporting
function. In such a case it is proposed according to the invention to make use of
a sealing strip to form shuttering around the gap between the bottom of the column
and the top of the concrete structure and to pour in material of thin consistency
to completely fill this gap. This sealing strip can be made of plastic material, which
may or may not be reinforced with metallic materials, and temporarily attached to
the concrete structure with the aid of a layer of adhesive or mastic. Moreover, in
this way it is possible to use a low shrinkage mix so that the risk of incomplete
support, as can arise in the state of the art when using relatively easily workable
concrete of thick consistency, no longer exists.
[0013] It must be understood that the anchor components to be cast in situ can comprise
any structures known in the state of the art. It is possible that these components
do not protrude above the plate and, for example, comprise sleeves provided with screw
thread. If the adjusting means have been recessed in the plate or are subsequently
recessed in the plate, it is possible by this means to "cast in" the fixing plates
and then to make the area around the fixing plate flat, for example by smoothing.
[0014] The invention also relates to a method for positioning a column, comprising casting
a fixing structure in situ as described above, followed by fitting the sealing strip,
described above, around the fixing structure, after which the space within said strip
is filled with a settable casting composition.
[0015] The invention will be explained in more detail with reference to an illustrative
embodiment shown in the drawing. In the drawing:
Fig. 1 shows, diagrammatically, a side view of one embodiment of a fixing structure
according to the invention;
Fig. 2 shows the fixing structure according to Fig. 1 after casting into concrete
and during the adjustment of a column;
Fig. 3 shows a sealing strip according to one embodiment of the present invention;
Fig. 4 shows the positioning of the sealing strip on the concrete structure while
concrete-like material of thin consistency is poured in,
Fig. 5 shows, diagrammatically, a perspective view of a variant of the fixing structure
according to the preceding figures; and
Fig. 6 shows a section of the structure shown in Fig. 5.
[0016] In Fig. 1 the fixing structure according to the invention is indicated in its entirety
by 1. The most simple embodiment is shown in Fig. 1, only two anchor components 3
and 4 being shown. These components have been permanently fixed in advance to plate
2 with the aid of nuts 6. With this arrangement the nuts are relatively weak plastic
nuts or another movable structure. It will be understood that this fixing to plate
2 can also take place by welding, pressing or some other method. In the example shown,
anchor component 3 is provided with a bent-over end and anchor component 4 is provided
with a bolt head 10. It will be understood that two identical anchor ends can also
be used. When using anchor component 4, which like anchor component 3 is provided
with a screw thread 5, use can be made of a bolt-like structure. This has the advantage
that a relatively high grade type of steel can be used in a manner that is readily
achieved. After all, anchor component 3 will in general be made of a steel of low
strength (less than 50 kg/mm
2), whilst a bolt can have a strength of more than 80 kg/mm
2 without high costs.
[0017] The fixing plate 2 can be of any material known in the state of the art, but will
in general be made of steel. Fixing plate 2 is provided in the centre thereof with
a sleeve 8 that is provided with screw thread and is fixed to said plate in some way.
An adjusting bolt 7 can be accommodated in sleeve 8.
[0018] Because the distance between the bolt holes in columns and other structures is standardised,
the fixing structure 1 can be delivered to the site as a prefabricated member. It
is then, as shown in Fig. 2, positioned in some way in a concrete structure to be
poured. An additional reinforcing rod is indicated by 16 and a wire link to plate
2, which serves to hold the fixing structure in place during pouring of concrete 14,
is indicated by 15.
[0019] After the concrete has been poured and has set (to some extent), column 12 is placed
in position. As a result of the accurate positioning of the anchor components 3 and
4 with respect to plate 2, the openings in column 12 will always correspond to the
anchor components concerned. Adjusting bolt 7 can be moved outwards in advance, so
that it is ensured that the column is positioned at the correct height. Because the
adjusting bolt 7 is in the centre of the plate 2, it is relatively simple to adjust
the column such that it is absolutely vertical. When adjustment is carried out by
means of bolt 7, the nuts 8 will be displaced relative to the thread. A firm and adjustable
connection can be provided by tightening nuts 13. Plate 2 is sufficiently strong to
absorb the compressive force originating from supporting bolt 7 of the column.
[0020] It will be understood that more than two anchors can be present. Optionally, more
than one adjusting bolt 7 can be present.
[0021] Fig. 3 shows a sealing strip that is indicated in its entirety by 17. This strip
consists of a base section 18 that is provided with a layer of adhesive or mastic
21 on the underside thereof. 20 shows an upright section that can be made of a readily
deformable plastic or metallic material. 19 indicates scoring in the base section
18, by means of which the latter can be bent, as shown with the aid of Fig. 4.
[0022] Fig. 4 shows the structure according to Fig. 2 when fitting the sealing strip 17.
What is achieved by means of such a seal is that it is possible to introduce a casting
concrete of relatively thin consistency into the gap between the underside of column
12 and the top of the poured concrete floor. This concrete is indicated by 22. Such
a concrete has particularly low shrinkage, with the result that after it has set the
column bears directly on the poured concrete part.
[0023] It will be understood that the time-consuming production of a template, removal of
the wooden template after pouring the concrete and attaching bottom supporting nuts
to the anchor components to support the column is avoided in this way. By working
with a concrete of thin consistency it is possible rapidly and effectively to ensure
that the entire gap between the bottom of the column and the concrete floor is completely
filled with concrete, so that maximum transfer of supporting forces is achieved. On
the one hand, an appreciable saving in time and, on the other hand, an appreciable
improvement in the quality of the product handed over can be achieved as a result.
[0024] A further variant of the fixing structure according to the invention is shown in
Figs 5 and 6. This variant is indicated in its entirety by 31. The anchor rods are
indicated by 3. This fixing structure consists of a fixing member 30 made up of strips
32 and 33 which are joined to one another with the aid of bolts 38. Strip 32 is provided
in the centre with a threaded bush 36 into which a bolt 37, that serves as adjusting
bolt, can be screwed. A multiplicity of different dimensions can be provided by varying
the strips 32 and 33. It has been found that the spacing of the openings 34 between
the strips 32 varies very substantially from structure to structure. In this way it
is possible, without further measures being required, to cover a wide range of different
spacings by keeping a very restricted group of strips 32, 33 in stock.
[0025] The strips shown here can be made of plastic material. These can be so constructed
that the anchors 3 can be pushed through them but are held firmly clamped by them.
Other structures are possible, for example sleeve structures which engage around the
threaded anchors and are slid over the latter both from the top and from the bottom
and engage on the strip-shaped part 32 between them such that the latter is clamped.
Other structures for accommodating the stud 3 such that it is clamped are conceivable.
Such structures can, moreover, be implemented in such a way that the strips 32, 34
are easily removable after the anchor components 3 have been cast in situ. In this
way the fixing member 30 can be used again. In this context it is, of course, essential
that the threaded bush 36 remains behind in the poured concrete, so that adjustment
remains possible. Such variants can also be used in the case of the embodiment in
the preceding figures.
[0026] Of course, it is possible to protect the protruding threaded parts during transport
and storage, but also during casting in situ, by sleeve-shaped plastic caps or the
like.
[0027] These and further variants and modifications of the structure described above are
obvious to those skilled in the art after reading the above description and fall within
the scope of the appended claims.
1. Fixing structure (1, 31) for joining a column (12) or the like to a concrete structure
(14) which is to be poured, comprising at least two anchor components (3, 4) which
are to be cast in situ and are located some distance apart, which anchor components
are provided with screw thread (5) for fixing said column or the like, the fixing
structure comprising a fixing member (2, 30) in which said anchor components have
been fitted, characterised in that said fixing member is provided, between the opening for said anchor components, with
adjusting means for said column or the like, which adjusting means comprise a support
(7, 37) that can be moved outwards with respect to said member.
2. Fixing structure according to Claim 1, wherein that part of an anchor component (4)
that is to be cast in situ is constructed as a bolt provided with a head (10).
3. Fixing structure according to one of the preceding claims, wherein said fixing member
comprises a plate-shaped part provided with openings for accommodating said anchor
components.
4. Fixing structure according to one of Claims 1 or 2, wherein said fixing member comprises
a strip-shaped part (33) provided with openings (34) for accommodating said anchor
components (3).
5. Fixing structure according to Claim 4, comprising at least two strip-shaped parts
(32, 33) joined to one another.
6. Fixing structure according to one of the preceding claims, wherein said fixing member
is removable after said adjusting means have been cast in situ.
7. Fixing structure according to one of the preceding claims, wherein said fixing member
comprises means for the temporary fixing thereof to other reinforcing parts of the
structure to be poured.
8. Fixing structure according to one of the preceding claims, comprising a sealing strip
(17).
9. Fixing structure according to Claim 8, wherein said sealing strip comprises a horizontal
base section (18) and a sealing section (20) projecting essentially vertically therefrom.
10. Fixing structure according to Claim 8 or 9, wherein said base section is provided
with adhesive means (21).
11. Method for positioning a column using a fixing structure according to claims 1-10,
comprising casting the fixing structure in concrete, followed by fitting a sealing
strip around the fixing structure, after which the space within said strip is filled
with a settable casting composition.
1. Befestigungskonstruktion (1, 31), um eine Säule (12) oder ähnliches mit einer Betonkonstruktion
(14), die gegossen werden wird, zu verbinden, wobei mindestens zwei Ankerelemente
(3, 4) umfasst sind, die in situ gegossen werden und mit einem Abstand platziert sind,
wobei die Ankerelemente mit Gewindeanschluss (5) versehen sind, um die Säule oder
ähnliches zu befestigen, wobei die Befestigungskonstruktion ein Befestigungselement
(2, 30) umfasst, in welches die Ankerelemente eingepasst wurden, dadurch gekennzeichnet, dass das Befestigungselement, zwischen den Öffnungen für die Ankerelemente, mit Justiermitteln
für die Säule oder ähnlichem versehen ist, wobei die Justiermittel einen Träger (7,
37) umfassen, welcher nach außen bezüglich des Elements bewegt werden kann.
2. Befestigungskonstruktion nach Anspruch 1, wobei der Teil eines Ankerelements (4) der
in situ gegossen werden wird als ein mit einem Kopf (10) versehener Bolzen konstruiert
ist.
3. Befestigungskonstruktion nach einem der vorherigen Ansprüche, wobei das Befestigungselement
einen plattenförmigen Teil umfasst, der mit Öffnungen zur Aufnahme der Ankerelemente
versehen ist.
4. Befestigungskonstruktion nach einem der Ansprüche 1 oder 2, wobei das Befestigungselement
einen streifenförmigen Abschnitt (33) umfasst, der mit Öffnungen (34) zur Aufnahme
der Ankerelemente (3) versehen ist.
5. Befestigungskonstruktion nach Anspruch 4, wobei mindestens zwei streifenförmige Abschnitte
(32, 33) umfasst sind, die miteinander verbunden sind.
6. Befestigungskonstruktion nach einem der vorherigen Ansprüche, wobei das Befestigungselement
entfernbar ist, nachdem die Justiermittel in situ gegossen worden sind.
7. Befestigungskonstruktion nach einem der vorherigen Ansprüche, wobei das Befestigungselement
Mittel zur temporären Befestigung derselben an anderen verstärkenden Teilen der zu
gießenden Konstruktion umfasst.
8. Befestigungskonstruktion nach einem der vorherigen Ansprüche, wobei ein Dichtstreifen
(17) umfasst ist.
9. Befestigungskonstruktion nach Anspruch 8, wobei der Dichtstreifen einen horizontalen
Basisabschnitt (18) und einen dichtenden Abschnitt (20) umfasst, der im Wesentlichen
vertikal davon hervorsteht.
10. Befestigungskonstruktion nach Anspruch 8 oder 9, wobei der Basisabschnitt mit Klebmitteln
(21) versehen ist.
11. Verfahren, um eine Säule zu positionieren, wobei eine Befestigungskonstruktion gemäß
den Ansprüchen 1 bis 10 verwendet wird, umfassend das Gießen der Befestigungskonstruktion
aus Beton, gefolgt von dem Anpassen eines Dichtstreifens rund um die Befestigungskonstruktion,
nach welchem der Raum innerhalb des Streifens mit einer setzbaren Vergussmischung
aufgefüllt wird.
1. Construction de fixation (1, 31) pour raccorder une colonne (12) ou équivalent à une
construction en béton (14) devant être coulée, comportant au moins deux composants
d'ancrage (3, 4) devant être moulés in situ et situés à une certaine distance l'un
de l'autre, lesquels composants d'ancrage sont pourvus d'un filetage de vis (5) pour
fixer ladite colonne ou équivalent, la construction de fixation comportant un élément
de fixation (2, 30) sur lequel lesdits composants d'ancrage ont été montés, caractérisée en ce que ledit élément de fixation est pourvu, entre les orifices destinés auxdits composants
d'ancrage, de moyens d'ajustement pour ladite colonne ou équivalent, lesquels moyens
d'ajustement comportent un support (7, 37) qui peut être déplacé vers l'extérieur
par rapport audit élément.
2. Construction de fixation selon la revendication 1, dans laquelle une partie d'un composant
d'ancrage (4) devant être moulé in situ est construite sous la forme d'un boulon pourvu
d'une tête (10).
3. Construction de fixation selon l'une des revendications précédentes, dans laquelle
ledit élément de fixation comporte une pièce aplatie pourvue d'orifices destinés à
loger lesdits composants d'ancrage.
4. Construction de fixation selon l'une des revendications 1 ou 2, dans laquelle ledit
élément de fixation comporte une pièce allongée (33) pourvue d'orifices (34) destinés
à loger lesdits composants d'ancrage (3).
5. Construction de fixation selon la revendication 4, comportant au moins deux pièces
allongées (32, 33) connectées l'une à l'autre.
6. Construction de fixation selon l'une des revendications précédentes, dans laquelle
ledit élément de fixation est démontable après que lesdits moyens d'ajustement ont
été moulés in situ.
7. Construction de fixation selon l'une des revendications précédentes, dans laquelle
ledit élément de fixation comporte des moyens destinés à la fixation temporaire de
celui-ci à d'autres pièces d'armature de la construction devant être coulée.
8. Construction de fixation selon l'une des revendications précédentes, comportant une
bande de scellement (17).
9. Construction de fixation selon la revendication 8, dans laquelle ladite bande de scellement
comporte une section de base horizontale (18) et une section de scellement (20) saillant
de façon essentiellement verticale à partir de celle-ci.
10. Construction de fixation selon la revendication 8 ou 9, dans laquelle ladite section
de base est pourvue de moyens d'adhésion (21).
11. Procédé pour le positionnement d'une colonne utilisant une construction de fixation
selon les revendications 1 à 10, comportant le moulage de la construction de fixation
dans du béton, suivi de l'ajustement d'une bande de scellement autour de la construction
de fixation, après quoi l'espace à l'intérieur de ladite bande est rempli d'une composition
de moulage ajustable.