EP3947837A1 - Système de liaison pour une liaison de force d'au moins deux éléments préfabriqués en béton - Google Patents

Système de liaison pour une liaison de force d'au moins deux éléments préfabriqués en béton

Info

Publication number
EP3947837A1
EP3947837A1 EP20713854.6A EP20713854A EP3947837A1 EP 3947837 A1 EP3947837 A1 EP 3947837A1 EP 20713854 A EP20713854 A EP 20713854A EP 3947837 A1 EP3947837 A1 EP 3947837A1
Authority
EP
European Patent Office
Prior art keywords
precast concrete
connecting device
concrete parts
recess
threaded spindle
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.)
Withdrawn
Application number
EP20713854.6A
Other languages
German (de)
English (en)
Inventor
Felix Wacker
Bernhard Leitner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Philipp GmbH
Progress Holding AG
Original Assignee
Philipp GmbH
Progress Holding AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Philipp GmbH, Progress Holding AG filed Critical Philipp GmbH
Publication of EP3947837A1 publication Critical patent/EP3947837A1/fr
Withdrawn legal-status Critical Current

Links

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
    • E04B1/02—Structures consisting primarily of load-supporting, block-shaped, or slab-shaped elements
    • E04B1/04—Structures consisting primarily of load-supporting, block-shaped, or slab-shaped elements the elements consisting of concrete, e.g. reinforced concrete, or other stone-like material
    • E04B1/043—Connections specially adapted therefor
    • E04B1/046—Connections specially adapted therefor using reinforcement loops protruding from the elements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
    • E04B1/21—Connections specially adapted therefor
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38—Connections for building structures in general
    • E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
    • E04B1/4114—Elements with sockets
    • E04B1/4142—Elements with sockets with transverse hook- or loop-receiving parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F16B5/0004—Joining sheets, plates or panels in abutting relationship
    • F16B5/0008—Joining sheets, plates or panels in abutting relationship by moving the sheets, plates or panels substantially in their own plane, perpendicular to the abutting edge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F16B5/02—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
    • F16B7/06—Turnbuckles
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38—Connections for building structures in general
    • E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
    • E04B2001/4192—Connecting devices specially adapted for embedding in concrete or masonry attached to concrete reinforcing elements, e.g. rods or wires

Definitions

  • the invention relates to a connecting device for frictional connection of at least two precast concrete parts, an arrangement of at least two precast concrete parts and at least one such connecting device, the use of at least one such connecting device for frictionally connecting at least two precast concrete parts, a recess body for forming at least one recess in at least one precast concrete part, in which at least one such connecting device can be arranged at least in sections, as well as a method for non-positive connection of at least two precast concrete parts by means of at least one such connecting device.
  • WO 2013/131530 A1 discloses a wedge-shaped insert which is anchored to the two precast concrete parts via a screw.
  • the disadvantage of this solution is that the screws have to be anchored in the precast concrete parts in a laborious manner, for example using a waved anchor. Furthermore, each screw must be tightened separately to connect the two precast concrete parts, which is associated with a high expenditure of time and involves the risk that the insert is not arranged centered between the two precast concrete parts. Furthermore, it is not possible to arrange the connecting device at an angle other than 180 ° to the precast concrete parts, for example in order to absorb transverse forces. Finally, the connecting device is relatively expensive.
  • EP 2 816 164 A1 discloses a connecting device with closed holding elements into which a securing bolt is inserted.
  • DE 23 30 675 A1 discloses a connecting device with holding elements which each partially enclose a reinforcing bar. This is necessary so that the connection device can be retrofitted.
  • WO 2017/174066 A1 discloses a modular truss and represents general prior art.
  • the object of the present invention is to provide a connection device which is improved over the prior art and in which the disadvantages of the prior art are at least partially avoided and which is suitable for use in different configurations depending on the requirements to be met and at the same time to stably connect the precast concrete parts. Furthermore, an arrangement of at least two precast concrete parts and at least one improved connecting device, the use of at least one improved connecting device for frictional connection of at least two precast concrete parts, a recess body for forming at least one recess in at least one precast concrete part, in which at least one improved connecting device can be arranged at least in sections, and a method for non-positive connection of at least two precast concrete parts by means of at least one improved connection device are specified.
  • the connecting device comprises at least two end pieces, between which a threaded spindle screwed or screwable to them is arranged, a distance between the end pieces in the longitudinal direction of the connecting device being changeable by rotating the threaded spindle.
  • the at least two end pieces each have at least one lockable retaining element which is designed to completely enclose at least one, preferably U-shaped, reinforcing bar protruding from the at least two precast concrete parts.
  • connection device can be attached to conventional reinforcing bars. Special screws to be anchored in the precast concrete parts are not necessary.
  • the at least two end pieces each have at least one lockable retaining element, it is possible to securely enclose the reinforcing bars protruding from the at least two precast concrete parts and to introduce the force symmetrically into the connecting device, which would not be the case, for example, with a hook that was opened on one side .
  • an extremely stable connection of the at least two precast concrete elements can be achieved with a high force of up to 100 kN, for example.
  • the structure of the connecting device also makes it possible to arrange the connecting device at an angle other than 180 ° to the at least two precast concrete parts. In this way, it is also possible, for example, to intercept transverse forces which act transversely to a longitudinal plane of the at least two precast concrete parts.
  • the at least two precast concrete parts can also be connected to one another via at least two connecting devices, the at least two connecting devices being able to be arranged crosswise, for example.
  • the precast concrete parts to be connected can be roughly divided into four main areas: 1.
  • Walls and wall-like components which include solid walls, sandwich walls, cavity walls / double walls (semi-finished parts with concreted edge area), hollow plank walls and lightweight concrete walls
  • Ceilings and ceiling-like construction elements which include semi-ceilings / element ceilings, solid ceilings, Pi ceilings and hollow floorboards
  • Structural components which include columns, beams and beams and linings
  • connection device components can not only be connected to one another within an over-area, but can also be combined with one another in different ways depending on the area of requirements and load absorption.
  • the connecting device has the following advantages:
  • connection opening does not have to be filled in order to establish a non-positive connection. This also makes the connection removable and ideal for temporary structures
  • the at least one holding element has a fork, with two ends of the fork being able to be closed by at least one screw that can be secured preferably by a safety thread and / or a split pin.
  • the safety thread ensures that the screw cannot loosen by itself.
  • the connecting device has at least one lock nut which is or can be arranged between the holding element of an end piece and the threaded spindle.
  • a preload can be applied by means of the at least one lock nut.
  • the lock nut is preferably designed to be self-locking.
  • the connecting device is at least partially, preferably completely, galvanized and / or at least partially, preferably completely, is made of stainless steel.
  • the threaded spindle has two, preferably opposing, internal threads having, in each of which a threaded section of one of the end pieces with a corresponding external thread can be arranged, and / or has at least one circumferentially arranged hexagonal contour for a torque wrench, preferably wherein the threaded spindle has at least two hexagonal contours which are arranged rotated by essentially 30 ° relative to one another , and / or has a ratchet connection for rotating the threaded spindle by means of a ratchet, and / or has at least one passage opening for receiving at least one further connection device according to one of the preceding claims in sections.
  • a pre-tensioning can be applied with a torque wrench via an integrally formed hexagon, thereby further increasing the power transmission in the event of transverse force or in the event of bending.
  • the effect of the connecting device can thereby be increased.
  • the threaded spindle has at least two hexagonal contours, which are arranged rotated by essentially 30 ° relative to one another, is advantageous because this allows the space required to rotate the threaded spindle by actuating the hexagonal contours to be reduced.
  • the at least two hexagonal contours can be actuated alternately. If the connecting device is arranged in a recess in the at least two precast concrete parts, the recess can be made correspondingly smaller.
  • the arrangement according to the invention comprises at least two precast concrete parts, each of which has at least one reinforcing bar protruding from the concrete, preferably in a U-shape, the reinforcing bars of the at least two precast concrete parts being connected to one another by means of at least one connecting device, the at least one connecting device comprising at least two end pieces, between which a screwed or screwable threaded spindle is arranged, wherein a distance between the end pieces in the longitudinal direction of the connecting device can be changed by rotating the threaded spindle, and the at least two end pieces each have at least one closed or lockable retaining element, which is designed, at least to completely enclose a reinforcing bar, preferably U-shaped, protruding from the at least two precast concrete parts, the reinforcing bars each being completely enclosed by a retaining element of an end piece of the connecting device and the distance between the end pieces in the longitudinal direction of the connecting device being adjusted in this way or by rotating the threaded spindle it is
  • the at least one connecting device is arranged at an angle 26 between 10 ° and 80 ° relative to the at least two precast concrete parts.
  • the at least two precast concrete parts can be arranged very differently relative to one another and connected to one another by means of the at least one connecting device. Arrangements have proven to be particularly advantageous in which the at least two precast concrete parts
  • the at least two precast concrete parts can be wall elements or ceiling elements.
  • a recess body for forming at least one recess in at least one precast concrete part, in which at least one connecting device can be arranged at least in sections, wherein the at least one connecting device comprises at least two end pieces, between which a threaded spindle screwed or screwable with them is arranged, wherein a distance between the end pieces in the longitudinal direction of the connecting device can be changed by turning the threaded spindle, and the at least two end pieces each have at least one closed or closable retaining element, which is designed to completely enclose at least one, preferably U-shaped, reinforcing bar protruding from the at least two precast concrete parts, the recess body having a predetermined outer contour which corresponds to the contour of the at least corresponds to a recess to be formed in the at least one precast concrete part, and wherein the recess body is designed to contain a predetermined section of at least one reinforcing bar that a From the concrete of the at least one connecting device
  • the recess body is formed at least in some areas from a reusable plastic and / or comprises at least one magnet, by means of which the recess body can be releasably fastened to at least one formwork element.
  • the recess body comprises at least one magnet
  • the recess body can be fastened in a simple and flexible manner to at least one formwork element that is used to manufacture the corresponding precast concrete part.
  • the recess body comprises at least two part bodies, between which the predetermined section of the at least one reinforcing bar can be arranged. It has proven favorable that at least one of the partial bodies has a groove for receiving the predetermined section of the at least one reinforcing bar, and / or the at least two partial bodies are pivotably connected to one another, and / or to one another via at least one fastening means, preferably at least one screw and at least one nut cooperating therewith can be detachably connected. These measures, alone or in combination with one another, support the reusability of the recess former.
  • the recess body comprises three sub-bodies, two of the three sub-bodies being arranged or mountable in the middle on an outside of the recess body and the third of the three sub-bodies, preferably the third of the three sub-bodies being interchangeable and having different widths can, and / or at least two of the three part bodies are connected or connectable to one another via a form fit, preferably wherein the form fit has at least one contour and at least one corresponding counter-contour, and / or the two of the three part bodies which are arranged on an outside of the recess body or can be arranged, has at least one slot and is hinged, whereby the at least one slot can be opened or closed.
  • the three-part structure makes it possible to assemble the recess former in a modular manner and to make it usable for different wall thicknesses. It is advisable to use the same outer part bodies for every wall thickness. With the third part body, which can have different widths, a recess body for any wall thickness can be assembled in combination with the two outer part bodies.
  • the outer part bodies can also be used without a middle part body. A recess with a very small thickness can thus be produced.
  • the three part bodies can be held together by at least one screw connection.
  • the recess body can be particularly simple and in a comfortable manner with the predetermined section of the at least one reinforcing bar, which should protrude from the concrete of the at least one precast concrete part.
  • the method comprises the following process steps: In each case at least one reinforcing bar protruding from the precast concrete parts, preferably in a U-shape, each with a holding element of an end piece of the Connection device completely enclosed, and the distance between the end pieces in the longitudinal direction of the connection device is adjusted by turning the threaded spindle in such a way that the at least two precast concrete parts rest against each
  • At the beginning of the method at least one recess is formed in each of the at least two precast concrete parts by means of at least one recess body according to the invention by placing a predetermined section of at least one reinforcing bar within the at least one recess body in a predetermined position and Alignment is arranged, the at least one rebar is embedded in concrete, and the at least one recess body is removed after the at least partial hardening of the concrete.
  • the at least two precast concrete parts are connected by means of one or more connecting devices in a predetermined configuration, preferably the number of connecting devices to be used and the predetermined configuration depending on the magnitude of the predetermined force , the direction of the predetermined force, static requirements, a thickness of the at least two precast concrete parts to be connected, and / or the installation situation can be retrieved from a processor-controlled database.
  • the at least two precast concrete parts are connected to one another by means of at least two connecting devices, preferably wherein the at least two connecting devices are arranged essentially parallel, crosswise, and / or mirror-symmetrically to one another.
  • At least one section at least
  • Force compensation element is arranged in order to distribute the predetermined force evenly over a contact area of the at least two precast concrete parts, preferably wherein the at least one force compensation element comprises a neoprene tape. Such a force compensation element compensates for unevenness so that the force is evenly distributed over the entire joint.
  • Force compensation element can be 2-5 mm, for example.
  • the at least one connecting device is encased at least in sections with a filler, preferably a joint mortar, following the frictional connection of the at least two precast concrete elements. This can be particularly advantageous for fire protection and / or for absorbing dynamic loads, for example in the event of an earthquake.
  • FIG. 1 shows a first preferred embodiment of a connecting device in a schematically illustrated perspective view
  • FIG. 3 shows the threaded spindle, an end piece and a screw for closing the folding element of the end piece of the connecting device according to the first preferred embodiment in a schematically illustrated perspective view
  • Precast concrete parts which are connected to one another by means of a connecting device, in a schematically illustrated perspective view, wherein in partial figure b) the connecting device is coated with a filler and force compensation elements are arranged between the precast concrete parts,
  • FIG. 9 shows a first preferred embodiment of a recess body for forming a recess in a precast concrete part in a schematically illustrated perspective view
  • FIG. 10a) -d) a second preferred exemplary embodiment of a recess body for forming a recess in a precast concrete part in a perspective view shown schematically, the recess body in FIG the sub-figure a) is connected to two reinforcing bars, the recess body in the sub-figure b) is unfolded, the sub-figure c) shows a cross-section of the unfolded recess body and the sub-figure d) shows the opened recess body without reinforcing bars,
  • FIG. 11 shows a further exemplary embodiment of a connecting device in a schematically illustrated perspective view
  • Precast concrete parts which are connected to one another by means of a connecting device, in schematic cross-sectional views from the side and from above,
  • Precast concrete parts which are connected to one another by means of two connecting devices, in schematic cross-sectional views from the side and from above,
  • Precast concrete parts which are connected to one another by means of a connecting device, in schematic cross-sectional views from the side and from above,
  • Precast concrete parts which are connected to one another by means of a connecting device, in schematic cross-sectional views from the side and from above,
  • a recess body for forming a recess in a precast concrete part in a schematically illustrated perspective view, the recess body in partial figure a) being connected to two reinforcing rods, the recess body in partial figure b) being opened, the sub-figure c) a cross section of the opened recess body, the sub-figure d) the opened recess body without reinforcing bars and the
  • Partial figure e show the recess body with a middle part body partially pulled out relative to the outer part bodies
  • FIG. 17 shows a fourth preferred embodiment of a recess body for forming a recess in a precast concrete part in a schematically illustrated perspective view.
  • FIG. 1 shows a first preferred exemplary embodiment of a connecting device 1 for the force-locking connection of at least two precast concrete parts 2, 3.
  • two precast concrete parts 2, 3 are indicated by way of example with dashed lines.
  • the connecting device 1 comprises two end pieces 4, 5, between which a threaded spindle 6 screwed or screwable with them is arranged, a distance 7 (compare FIGS. 2a) and 2b)) of the end pieces 4, 5 in the longitudinal direction 8 of the connecting device 1 through a Rotating the threaded spindle 6 can be changed.
  • the end pieces 4, 5 each have a lockable holding element 11, 12 which is designed to completely enclose at least one reinforcing bar 10, preferably U-shaped, protruding from the at least two precast concrete parts 2, 3 (also by means of dashed lines in the figure Lines indicated).
  • the holding elements 11, 12 can have a fork 12, wherein two ends 13 of the fork 12 can each be closed by a screw 14 that can be secured via a safety thread 41. Additionally or alternatively, a split pin can be used to secure the screw 14.
  • the connecting device 1 can have lock nuts 15, with a lock nut in each case being or can be arranged between a holding element 11, 12 of an end piece 4, 5 and the threaded spindle 6.
  • the connecting device 1 is at least partially, preferably completely, galvanized and / or consists at least partially, preferably completely, of stainless steel.
  • the threaded spindle 6 can have two opposing internal threads 16, 17, in each of which a threaded section 18, 19 of one of the end pieces 4, 5 with a corresponding external thread 20, 21 can be arranged.
  • the Orientations of the internal threads 16, 17 and the corresponding external threads 20, 21 are identified with an L and R, respectively. These letters can be engraved into the material of the threaded spindle 6 and the end pieces 4, 5.
  • the connecting device 1 can have at least one circumferentially arranged hexagonal contour 22 for a torque wrench.
  • the threaded spindle 6 has two webs 42 running essentially parallel to one another in the longitudinal direction 8, between which the end pieces 4, 5 can be arranged in regions.
  • FIGs 2a) and 2b) show the connecting device 1 at two different distances 7 between the two end pieces 4, 5, the distance 7 between the end pieces 4, 5 being variable by rotating the threaded spindle 6.
  • FIG. 3 shows the threaded spindle 6, an end piece 4 and a screw 14 for closing the holding element 12 of the end piece 4 of the connecting device 1.
  • the screw 14 can engage with its external thread 41 in this internal thread 43.
  • a hole 44 for securing the position of the screw 14 is also arranged.
  • FIGS. 4a) to 4c) show three further particularly preferred exemplary embodiments of a connecting device 1.
  • the threaded spindle 6 has a ratchet connection 23 for rotating the threaded spindle 6 by means of a ratchet.
  • the threaded spindle 6 has at least one passage opening 24 for receiving at least one section-wise further connecting device 1. In this way, a "belly connection" can be realized with a transversely tensioned connection device.
  • the holding elements 11, 12 each have a closed ring 11.
  • the end pieces 4, 5 it may be necessary for the end pieces 4, 5 to be pushed onto the reinforcing bars 10 in concrete before embedding the reinforcing bars 10, which are enclosed by the holding elements 11, 12, for example if they are U-shaped Reinforcing bars 10 are in which both ends of the U-shape are embedded in concrete.
  • the ring 11 can be welded when the end pieces are assembled. In this case, a subsequent attachment would also be possible.
  • Figures 5a) to 5d) show four exemplary installation situations of two precast concrete parts 2, 3 to be connected to one another, with the partial figure 5a) a corner joint, the partial figure 5b) a T-joint, the partial figure 5c) a straight joint and the partial figure 5d) shows a support.
  • the connecting devices 1 can be used for the non-positive connection of the precast concrete parts 2, 3.
  • Figures 6a) and 6b) show a first preferred embodiment of an arrangement 25 of two precast concrete parts 2, 3, each having at least one reinforcing bar 10 protruding from the concrete in a U-shape, the reinforcing bars 10 of the two precast concrete parts 2, 3 by means of a connecting device 1 are connected to each other.
  • the connecting device 1 is shown only schematically and can be designed according to one of the preferred exemplary embodiments.
  • the reinforcing bars 10 are each completely enclosed by a holding element 11, 12 of an end piece 4, 5 of the connecting device 1 and the distance 7 of the end pieces 4, 5 in the longitudinal direction 8 of the connecting device 1 was set or is adjustable by turning the threaded spindle 6, that the two precast concrete parts 2, 3 rest against one another at least in sections with a predetermined force, preferably tensile, transverse and / or bending force.
  • a predetermined force preferably tensile, transverse and / or bending force.
  • the connecting device 1 is exposed to tensile stress.
  • Figures 6a) and 6b) show a section of the arrangement 25.
  • the precast concrete parts 2, 3 can also be connected via further connecting elements 1 which are arranged below and / or above.
  • the connecting device 1 is arranged in a recess 28, which is designed in two parts, a first part of the recess 28 being arranged in the precast concrete part 2 and a second part of the recess 28 in the precast concrete part 3.
  • the recess 28 can have an essentially cuboid contour 40.
  • Figure 6b shows a modification of the arrangement 25 shown in Figure 6a), with force compensation elements 35 being arranged between the at least two precast concrete parts 2, 3 to be connected in order to distribute the predetermined force evenly over a contact area of the precast concrete parts 2, 3, too when the precast concrete parts 2, 3 are uneven in the contact area.
  • the force compensation elements 35 can be, for example, a neoprene tape.
  • connection device 1 in the arrangement 25 was encased with a filler 36, preferably a joint mortar, following the frictional connection of the precast concrete elements 2, 3.
  • a filler 36 preferably a joint mortar
  • Such pouring can be advantageous to increase fire resistance and / or to handle dynamic loads, e.g. caused by earthquakes.
  • force compensation element and “filler” can be used in combination or individually, as in the case shown.
  • FIGS. 7a) and 7b) show a second preferred exemplary embodiment of an arrangement 25 made of precast concrete parts 2, 3, 39, which are connected by means of connecting devices 1 are connected to each other.
  • FIG. 7b) shows a cross-sectional view from the side.
  • three precast concrete parts 2, 3, 39 are connected to one another by means of connecting devices 1, the precast concrete parts 2, 3, 39 being arranged essentially in the same plane and a central precast concrete part 3 being arranged between the two outer precast concrete parts 2, 39.
  • the middle precast concrete part 3 is each connected to the two outer precast concrete parts 2, 39 via two connecting devices 1 that are spaced apart from one another.
  • the precast concrete parts 2, 3, 39 include others
  • Reinforcement devices 45 which are mat-shaped and can be formed from longitudinal and transverse bars.
  • the connecting devices 1 are arranged at an angle 26 of approximately 45 ° relative to the two precast concrete parts 2, 3, 39 to be connected. Depending on the conditions to be met, the connecting devices 1 can also be arranged at angles 26 that differ therefrom, for example in an angular range between 10 ° and 80 °, relative to the precast concrete parts 2, 3, 39.
  • the connecting devices 1 are arranged both essentially parallel and, in relation to a plane of symmetry running through the central precast concrete element 3, mirror-symmetrically to one another.
  • FIGS. 7a) and 7b With the arrangement 25 shown in FIGS. 7a) and 7b), transverse forces and bending moments can be transmitted particularly well. According to the arrangement 25, transverse forces can be transmitted particularly well in one direction. In the case of a changing direction of the transverse force, for example due to wind, the arrangement 25 can be modified in such a way that two connecting devices 1 crossing one another are provided for each recess 28.
  • FIGS. 8a) and 8b) show a third preferred embodiment of an arrangement 25 made of precast concrete parts 2, 3 which are connected to one another by means of connecting devices 1.
  • connecting devices 1 a total of four connecting devices 1 are used, two connecting devices 1 each being arranged in a common recess 28.
  • the connecting devices 1 are arranged essentially parallel and, viewed from the side (see FIG. 8b), crosswise to one another.
  • the connecting elements 1 are also crossed over in the plane of the precast concrete parts 2, 3, 39 to be connected, compared to the embodiment shown in FIGS. 8a) and 8b).
  • Such a “double” crossing makes it possible to absorb bending moments and transverse forces with alternating directions in a particularly advantageous manner.
  • recess bodies 27 can be manually manufactured or prefabricated bodies made of Styrofoam, XPS, EPS or other similar insulating materials. Alternatively or in addition to this, single-shell reusable recess bodies made of reusable plastic can be used.
  • FIG. 9 shows a further preferred exemplary embodiment of a recess body 27 for forming a recess 28 in a precast concrete part, with a precast concrete part 3 being indicated by means of dash-dotted lines in FIG.
  • At least one connecting device 1 can subsequently be arranged at least in sections in the recess 28 to be formed (compare FIGS. 5a) ff.).
  • the recess body 27 has a predetermined outer contour 29, which corresponds to the contour 40 of the recess 28 to be formed in the precast concrete part 2, 3, 39, the recess body 27 being designed to contain a predetermined section 30 of a reinforcing bar 10, which is made from the concrete of the at least one Precast concrete part 2, 3, 39, preferably U-shaped, should protrude, secure in position so that the recess 28 assumes a predetermined position and orientation relative to the predetermined section 30 of the reinforcing bar 10 protruding from the concrete of the precast concrete part 2, 3, 39.
  • the recess body 27 can be formed at least in some areas from a reusable plastic.
  • the recess body 27 comprises two part bodies 31, 32, between which the predetermined section 30 of the reinforcing rod 10 can be arranged.
  • the recess body 27 holds the stirrup-shaped section 30 made of conventional reinforcing steel installed in the precast concrete part 3 in a secure position and at the correct height during the production of the precast concrete part.
  • the recess body 27 can be removed, cleaned if necessary and used to form a further recess, for example in a further precast concrete part 2, 39 to be connected to the precast concrete part 3.
  • FIGS. 10a) to 10d) show a further particularly preferred exemplary embodiment of a recess body 27 for forming a recess 28 in a precast concrete part 2, 3, 39.
  • the recess body 27 comprises three part bodies 31, 32, 9, which are pivotably connected to one another.
  • a predetermined section 30 of one can in each case between two adjacent partial bodies 31, 32, 9
  • Reinforcing bar 10 are arranged.
  • the partial bodies 31, 32, 9 have grooves 33 for receiving the predetermined sections 30 of the reinforcing bars 10.
  • Adjacent part bodies 31, 32, 9 can each be detachably connected to one another via a fastening means 37, 38 in the form of a screw and a nut 38 interacting therewith.
  • At least two precast concrete parts 2, 3, 39 can be non-positively connected with the connection devices 1 described in the following: at least one reinforcing bar 10 protruding from the precast concrete parts 2, 3, 39, preferably U-shaped, each with a folding element 11, 12 of an end piece 4, 5 of a connecting device 1 is completely enclosed, and the distance 7 of the end pieces 4, 5 in the longitudinal direction 8 of the connecting device 1 is set by turning the threaded spindle 6 in such a way that the at least two precast concrete parts 2, 3, 39 at least in sections a predetermined force, preferably tensile, transverse and / or bending force, rest against one another.
  • a predetermined force preferably tensile, transverse and / or bending force
  • At the beginning of the method, at least one recess 28 can be formed in each of the at least two precast concrete parts 2, 3, 39 by means of at least one described recess body 27 by placing a predetermined section 30 of at least one reinforcing bar 10 within the at least one recess body 27 in a predetermined position and Alignment is arranged, the at least one reinforcing bar 10 is embedded in concrete, and the at least one recess body 27 is removed after the at least partial hardening of the concrete.
  • the at least two precast concrete parts 2, 3, 39 are connected by means of one or more connecting devices 1 in a predetermined configuration, preferably the number of connecting devices 1 to be used and the predetermined configuration depending on the magnitude of the predetermined force, the direction of the predetermined force, static Requirements, a thickness 34 of the at least two precast concrete parts 2, 3, 39 to be connected and / or the installation situation can be retrieved from a processor-controlled database.
  • This database can be an online tool or the like.
  • the database can include parameters that can be entered, such as the transverse force perpendicular to the joint between the precast concrete parts 2, 3, 39 to be connected, the transverse force parallel to the joint, the tensile force, statics parameters, the thickness 34 of the precast concrete parts 2, 3, 39 and / or the Installation situation.
  • the database can then suggest a suitable configuration on specific connection devices 1.
  • the force absorption depends on the connection device 1 used, the number of connection devices 1 installed, the installation angle, the installation position and the connection reinforcement installed in the precast concrete part 2, 3, 39.
  • FIG. 11 shows a further exemplary embodiment of a connecting device 1.
  • This exemplary embodiment differs from the exemplary embodiment shown in FIG. 1 in that the threaded spindle 6 has two hexagonal contours 22 which are arranged rotated by essentially 30 ° relative to one another. This makes it easier for a user to find a contact surface when preloading with a torque wrench.
  • Figures 12a) to 15b) show four further preferred exemplary embodiments of an arrangement 25 made of precast concrete parts 2, 3, which are connected to one another by means of a connecting device or by means of two connecting devices.
  • FIGS. 12a), b) and FIGS. 13a), b) a wall-wall corner connection
  • FIGS. 15a), b) a wall-to-wall T-joint connection
  • the arrangement 25 according to FIGS. 12a), b) differs from the arrangement 25 according to FIGS. 13a), b) in that in the latter case a greater transverse force can be absorbed.
  • this is realized in that two connecting devices 1 are used, which are arranged crosswise.
  • FIGS. 16 a) -e) show a third preferred exemplary embodiment of a recess body 27 for forming a recess in a precast concrete part 2, 3, 39.
  • This recess body 27 comprises three sub-bodies 46, 47, 48, two of the three sub-bodies 46, 47, 48 being or can be arranged centrally on an outside of the recess body 27 and the third of the three sub-bodies 46, 47, 48.
  • the third of the three Partial body 46, 47, 48 can be exchanged and has different widths 54.
  • the middle part body 47 is in each case connected or can be connected to the adjacent outer part bodies 46, 48 via a form fit.
  • the form fit can be implemented, for example, by means of at least one contour 50 and at least one corresponding mating contour 51.
  • the contour 50 and the mating contour 51 can form a dovetail connection, as in the case shown.
  • the two outer part bodies 46, 48 each have a slot 49 and are designed to be foldable, whereby the slot 49 can be opened or closed. As a result, sections 30 of reinforcing rods 10 can be arranged in the partial bodies 46, 48.
  • FIG. 17 shows a fourth preferred exemplary embodiment
  • Recess body 27 for forming a recess in a precast concrete part 2, 3, 39 It is very much related to the third preferred exemplary embodiment according to FIGS. 16a) -e), the depth 56 of the recess body 25 being different. Depending on the wall thickness, one or the other recess body 25 can be used, with combinations also being possible.
  • the recess body 27 according to FIGS. 16a) -e) can be used in a first precast concrete part 2, 3, 39 and the recess body 27 according to FIG. 17 can be used in a second precast concrete part 2, 3, 39.
  • Connection device precast concrete parts (2, 3, 39) end pieces (4, 5)

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Bridges Or Land Bridges (AREA)
  • Joining Of Building Structures In Genera (AREA)

Abstract

L'invention concerne un système de liaison (1) permettant une liaison de force entre au moins deux éléments préfabriqués en béton (2, 3, 39), le système de liaison (1) comprenant au moins deux extrémités (4, 5) entre lesquelles est disposée une broche filetée (6) vissée ou pouvant être vissée à celles-ci. Une distance (7) entre les extrémités (4, 5) peut être modifiée dans la direction longitudinale (8) du système de liaison (1) par rotation de la broche filetée (6), les deux extrémités (4, 5) ou plus comprenant chacune au moins un élément de retenue refermable (12) qui est conçu pour entourer complètement au moins une barre d'armature (10), de préférence en forme de U, qui fait saillie de chacun des deux éléments préfabriqués en béton (2, 3, 39) ou plus.
EP20713854.6A 2019-03-25 2020-03-16 Système de liaison pour une liaison de force d'au moins deux éléments préfabriqués en béton Withdrawn EP3947837A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA50254/2019A AT522359B1 (de) 2019-03-25 2019-03-25 Verbindungsvorrichtung zum kraftschlüssigen Verbinden wenigstens zweier Betonfertigteile
PCT/EP2020/057073 WO2020193248A1 (fr) 2019-03-25 2020-03-16 Système de liaison pour une liaison de force d'au moins deux éléments préfabriqués en béton

Publications (1)

Publication Number Publication Date
EP3947837A1 true EP3947837A1 (fr) 2022-02-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP20713854.6A Withdrawn EP3947837A1 (fr) 2019-03-25 2020-03-16 Système de liaison pour une liaison de force d'au moins deux éléments préfabriqués en béton

Country Status (3)

Country Link
EP (1) EP3947837A1 (fr)
AT (1) AT522359B1 (fr)
WO (1) WO2020193248A1 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2330675A1 (de) * 1973-06-16 1975-02-06 Trasswerk Meurin Betriebs Gmbh Plattenfoermiges bauelement und daraus hergestellter baukoerper
ES2318026T3 (es) * 2001-05-17 2009-05-01 PFEIFER HOLDING GMBH & CO. KG Elemento de conexion y procedimiento para la conexion de una pieza prefabricada de hormigon con una seccion de una edificacion.
TWM284618U (en) * 2005-09-12 2006-01-01 Rung-Kuan Shie Container fastener
WO2013131530A1 (fr) 2012-03-08 2013-09-12 B.T. Innovation Gmbh Tendeur permettant de relier des éléments structuraux
GB2515317A (en) * 2013-06-19 2014-12-24 Buchan Concrete Solutions Ltd Improvements in or Relating to Panel Connections
DE102016106486A1 (de) * 2016-04-08 2017-10-12 Wilhelm Layher Verwaltungs-Gmbh Modularer Fachwerkträger

Also Published As

Publication number Publication date
WO2020193248A1 (fr) 2020-10-01
AT522359A1 (de) 2020-10-15
AT522359B1 (de) 2021-04-15

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