EP4001530A1 - Liaison murale - Google Patents

Liaison murale Download PDF

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Publication number
EP4001530A1
EP4001530A1 EP21208934.6A EP21208934A EP4001530A1 EP 4001530 A1 EP4001530 A1 EP 4001530A1 EP 21208934 A EP21208934 A EP 21208934A EP 4001530 A1 EP4001530 A1 EP 4001530A1
Authority
EP
European Patent Office
Prior art keywords
crossbar
double
wall
reinforcement according
spring
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.)
Granted
Application number
EP21208934.6A
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German (de)
English (en)
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EP4001530B1 (fr
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.)
Pakon AG
Original Assignee
Pakon 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
Priority claimed from CH01499/20A external-priority patent/CH718087A8/de
Application filed by Pakon AG filed Critical Pakon AG
Publication of EP4001530A1 publication Critical patent/EP4001530A1/fr
Application granted granted Critical
Publication of EP4001530B1 publication Critical patent/EP4001530B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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    • 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
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/84—Walls made by casting, pouring, or tamping in situ
    • E04B2/86—Walls made by casting, pouring, or tamping in situ made in permanent forms
    • E04B2/8611—Walls made by casting, pouring, or tamping in situ made in permanent forms with spacers being embedded in at least one form leaf
    • E04B2/8617—Walls made by casting, pouring, or tamping in situ made in permanent forms with spacers being embedded in at least one form leaf with spacers being embedded in both form leaves

Definitions

  • the present invention relates to a joint reinforcement for double walls.
  • Double walls have changed building with concrete walls since the 1970's.
  • the prefabricated wall shells are referred to as so-called double walls.
  • butt joints result. These joints run both vertically and horizontally.
  • the horizontal butt joints are arranged between the floor slab, foundation or ceiling.
  • the shoring of these joints is solved by means of a vertically protruding connection reinforcement in the in-situ concrete component.
  • the device according to the invention is aimed at the vertical butt joints. These joints result between the end faces of two adjacent double walls or a double wall and a solid component with a recess.
  • stirrup cages It is a ladder-like frame made of mild steel, which comprises an elongated vertical part, the length of which roughly corresponds to the height of the wall and on which individual metal brackets are attached in a row. The brackets protrude sideways from the vertical part.
  • the stirrup cage is installed in the area of the vertical butt joint only on site. The installation of these stirrup cages takes place after setting down the double walls to be connected and anchored and secured against horizontal thrust. In order to push the stirrup cage into the joint area and at a height of 3 m from above between the wall shells of the double wall, there are not always secured employees working on the construction site.
  • the basket is designed in such a way that it usually has its place in the wall gap.
  • the lattice girders to be connected to the wall shells are set back by approx. 30-35 cm from the end of the wall in the concrete factory.
  • the cavity between the two wall shells is filled with concrete on site.
  • a device for connecting two double walls using movable elements in the form of rotating brackets is known.
  • These movable elements are rotatably arranged on crossbars that run inside the wall shells of one of the two double walls.
  • the elements protrude from an end face of the double wall and, when two double walls are connected, open into the end face of the second wall or protrude into it.
  • So-called support brackets are arranged in this second wall. If the elements are folded in and do not protrude from the front, the second wall can be positioned.
  • the swivel brackets are usually prevented from unfolding by a rod or a rope for the time being.
  • Another disadvantage of the device from the EP2495375 A1 is that there is a risk that the swivel brackets will not unfold completely because parts (misfitted spacers) in the gap of the second wall block the rotation and connection with the support brackets. It is also necessary for the end faces of the double walls to be positioned exactly opposite one another and for the rotary bracket and support bracket to be arranged at the same height, since otherwise there is a possibility that the rotary bracket will come to rest at an angle when it is unfolded.
  • the object of the present invention is to provide a double-wall impact reinforcement which avoids at least one disadvantage known from the prior art.
  • the double-wall impact reinforcement according to the invention comprises at least one stirrup with two stirrup legs, the stirrup legs being connected to a crossbar.
  • the cross bar has two ends, the two ends engaging in opposite bar-shaped components, in particular profile bars, running perpendicularly or parallel to the cross bar. If the device according to the invention is built into the double wall, these rod-shaped components or profile bars run on the inside of the shells of the double wall.
  • the bracket legs are fixed in a rotationally fixed manner on the crossbar, for example by welding. In a rest position, the at least one bracket by a spring force in a right angles to the rod-shaped components, in particular profile rods, held. Alternatively, the at least one bracket can be held in a rest position by a parallel to the rod-shaped components or profile rods.
  • the double-wall impact reinforcement according to the invention has various advantages. If the device according to the invention is placed between the shells of a double wall, the at least one bracket protrudes from the end face of the double wall. This bracket ends in the second double wall and rests there, for example on an edge reinforcement. In this way, the desired lap joint is formed. Due to the spring force, the bracket can avoid obstacles, e.g. in the form of incorrectly installed spacers in the second wall. The spring force also means that the brackets do not have to be held in a specific position by an additional mechanism and then released before pivoting into the second wall.
  • the rod-shaped components are profile rods, in particular with a closed hollow profile or an open hollow profile or a solid profile.
  • the rod-shaped components can be rods, in particular profiled rods such as reinforcing rods, ribbed rods, threaded rods, or the like.
  • the spring force is achieved by at least one spring.
  • two springs are provided per bracket and crossbar to which the bracket is fixed in a rotationally fixed manner. These springs establish an operative connection between the crossbar with the bracket and the two bar-shaped components, in particular profile bars, into which the ends of the crossbar lead.
  • the two ends of the transverse rod can be mounted rotatably on the rod-shaped components, in particular reinforcement rods.
  • each of the two ends or end areas of the crossbar can be mounted in a perforated plate which is fixed to the associated hanger arm, in particular welded to it.
  • the desired spring force is generated by a bending spring, preferably a leaf spring.
  • the double-wall butt reinforcement of this type comprises a crossbeam, which is arranged between the two stirrup legs. This transom runs essentially parallel to the transom. Crossbar and crossbar are connected to each other by the spiral spring.
  • the two ends of the cross bar are fixedly connected, for example welded, to the bar-shaped components, in particular profiled bars.
  • the bending spring has a first end and a second end, the first end being connected to the crossbeam and the second end being connected to the crossbar.
  • the bending spring is clamped in this way between the crossbar and the transom.
  • the bending spring is welded or riveted to the crossbeam and the crossbar or plugged in with a positive and non-positive fit.
  • the bending spring is 5 cm to 10 cm long, preferably 5 cm to 6 cm, and has a material thickness of 0.3 mm to 0.5 mm.
  • the device according to the invention or according to exemplary embodiments is preferably arranged in one of the two double walls which are to be connected to one another.
  • the area in which the wall shells of the double walls meet is referred to as the joint area.
  • the brackets overlap this joint area and, in one embodiment of the invention, can be pivoted about an axis that is aligned perpendicularly to the wall shells. This axis runs through the crossbars, which are non-rotatably connected to the stirrups.
  • the brackets are held in a rest position at right angles to the wall shells, in particular at right angles to the joint area between the wall shells, by means of spring force.
  • the gap that results between the two double walls is called the butt joint.
  • the double-wall butt reinforcement according to the invention is arranged along one of the two end faces of the double wall, in particular parallel to the butt joint between the two double walls to be connected.
  • the double wall butt reinforcement according to the invention is provided on both end faces of the double wall. These are so-called pass walls.
  • the rod-shaped components in particular profile rods, run opposite each other along the wall shells of one of the two double walls, directly adjacent to the joint area.
  • the rod-shaped components can advantageously in the vertical direction (when the double walls are erected), the at least one bracket being held in a rest position at right angles to the rod-shaped components by means of the spring force; or the rod-shaped components can advantageously run in a horizontal direction (when the double walls are erected), the at least one bracket being held in a rest position parallel to the rod-shaped components by means of the spring force.
  • a plurality of brackets can be arranged along the joint area (ie vertically offset from one another) by being held by several pairs of (horizontally extending) rod-shaped components which are arranged vertically offset from one another along the joint area.
  • Such pairs of horizontally extending rod-shaped components can be implemented, for example, in the form of a lattice basket.
  • one of the two profile bars is designed as a U-profile open on one side and the second as a closed hollow profile.
  • At least one of the two profile bars can be designed as a Z-profile.
  • bracket which has two opposite long sides, so-called bracket legs, and two broad sides, which connect the long sides to one another.
  • connection point is provided on the closed bracket.
  • this connection point comprises two interlocking hook-shaped elements.
  • a stirrup comprises two opposite longitudinal sides, which are connected to one another by a broad side.
  • a stirrup is essentially U-shaped.
  • the double-wall butt reinforcement according to the invention is installed and concreted into the first shell of the double wall in the prefabricated parts factory.
  • the double-wall joint reinforcement according to the invention is fastened after the first shell has been concreted and concreted into the second shell.
  • the double-wall butt reinforcement according to the invention is subsequently introduced after the first and the second shell have been concreted in the butt joint which runs between the two double walls to be connected. This can be done in the precast plant or on the construction site.
  • the double wall joint reinforcement according to the invention is installed and concreted into the first shell and the second shell of the double wall in the prefabricated parts factory.
  • FIG. 1 shows a perspective view of an embodiment of the device according to the invention. Shown is a bracket 1, which is fixedly connected to a crossbar 6.
  • the two profile bars 2 and 3 which are arranged in wall shells of a double wall when the device is installed, can be seen in sections.
  • the profile bar 2 is designed as a closed hollow profile and the profile bar 3 as a U-profile.
  • the cross bar 6 runs between the two profile bars 2 and 3, which show openings for receiving the cross bar and for connecting the cross bar 6 to the profile bars 2 and 3.
  • the cross bar 6 is provided with a thread on at least one end and is connected to the profile bar 3 by screwing (In 1 not visible).
  • the brackets 1 are arranged perpendicularly to the profile bars 2 and 3 and protrude from the end face of that double wall in which the device according to the invention is installed. If this wall is then connected to another double wall, these two walls form a joint area into which the brackets 1 protrude and open into the second wall.
  • the bracket 1 with a spring force, in the illustrated embodiment, by means of two torsion springs 4, 5 in a rest position perpendicular to the Profile bars 2 and 3 held.
  • the two torsion springs 4.5 comprise a winding body 43, 53 to which two legs 41, 42 and 51, 52 are connected. As in 1 shown, the winding body 43, 53 surrounds the crossbar 6.
  • the two legs 41, 52 surround the profile bars 2 and 3, and the two legs 42 and 51 of the springs 4, 5 are connected to the legs 11 and 12 of the bracket 1. Due to the in 1 shown arrangement with the two opposing torsion springs 4, 5, a pivoting of the bracket 1 by up to 80 degrees from the basic position, both clockwise and counterclockwise are made possible.
  • the axis of rotation DX' runs through the crossbar 6.
  • the embodiment shown may include one bracket or multiple brackets.
  • FIG. 2 shows the embodiment 1 installed in a double wall W comprising a first wall shell W1 and a second wall shell W2.
  • a further crossbar 6 is provided, on which a bracket 1 can also be arranged (not shown).
  • a bracket 1 can also be arranged (not shown).
  • multiple crossbars 6 and thus multiple brackets can be provided. These then form a ladder-like structure with the profile bars 2 and 3 .
  • the positioning of the profile bars 2 and 3 can be seen. These run left and right on the inside of the first and second shells W1, W2. As in 2 shown, the profile bars 2 and 3 are arranged adjacent to the end faces W21 and W22.
  • the bracket 1 is shown in the unfolded state, in a basic position in which the bracket 1 is perpendicular to the profile bars 2 and 3 at right angles. Also shown are the two torsion springs 5 and 4, the coil body of which is penetrated by the crossbar 6. The two legs of the torsion springs are connected on the one hand to the bracket 1 and encompass the profile bars 2 and 3. This arrangement allows the bracket to be rotated clockwise or counterclockwise by up to 80 degrees, starting from the basic position shown.
  • FIG. 3 shows the connection of two double walls W and W' with the device according to the invention in a first embodiment.
  • the device according to the invention is shown in part.
  • the bracket 1 is in a basic position and protrudes into the second wall W'.
  • the bracket 1 protrudes from the end face of the first double wall W and runs between the two wall shells W1' and W2' of the second double wall W'.
  • the distance A between the two double walls W and W' is called the butt joint.
  • a second bracket which is connected to the second crossbar 6 in a rotationally fixed manner, is not shown.
  • the second embodiment shows a second embodiment of the device according to the invention.
  • the second embodiment also has two rod-shaped components, in particular profile rods, 2', 3' and at least one bracket 1' with two bracket legs 11' and 12'.
  • the bracket 1 is non-rotatably fixed to a crossbar 6'.
  • the cross bar 6' has two ends 61' and 62'.
  • the crossbar 6' is fixedly connected at these ends 61', 62' to the profile bars 2' and 3', preferably by a welded connection.
  • a crossbar 7 is provided between the hanger arms 11' and 12'. This crossbeam 7 runs parallel to the crossbar 6'.
  • a spiral spring F preferably a leaf spring, is arranged between the crossbeam 7 and the crossbar 6'.
  • the spiral spring has a first and a second end, with the first end being connected to the crossbar 6 ′ and the second end being connected to the crossbar 7 .
  • the dimensions of the bending spring are advantageously chosen so that the bracket 1 can be rotated up to 80 degrees clockwise and counterclockwise from the rest position. The position of rest is understood to be that in which the bracket 1' is at right angles to the profile bars 3' and 2'.
  • the axis of rotation DX runs through the spiral spring F.
  • the ends 61' and 62' of the transverse rod 6' are rigidly connected to the rod-shaped components, in particular profiled rods 2' and 3', so that there is no rotation here.
  • Figures 5 to 7 show a third embodiment of the device according to the invention.
  • the third embodiment also has two rod-shaped components 2, 3 and at least one bracket 1 with two bracket legs 11 and 12.
  • the rod-shaped components 2, 3 are designed as reinforcing rods 20, 30 (eg, ribbed on the outside).
  • the bracket 1 is in turn fixed to a crossbar 6 in a rotationally fixed manner.
  • the crossbar 6 in turn has two ends or (far visible) end regions 61 and 62, where the crossbar 6 is fixedly connected to the reinforcing bars 20 and 30, preferably by a welded connection.
  • a first crossbar 71 is fastened on a first side of the crossbar 6 and a second crossbar 72 is fastened between the two rod-shaped components 2 , 3 , in particular reinforcing bars 20 , 30 , on an opposite second side of the crossbar 6 .
  • a third crossbar 73 is fastened between the hanger legs 11, 12, with at least one tension spring 410, 420; 430 is arranged. The advantages are that the at least one tension spring 410, 420, 430 can be installed quickly and easily and does not require any special positioning.
  • a first tension spring 410 is preferably arranged between the first crossbar 71 and the third crossbar 73 and a second tension spring 420 is arranged between the second crossbar 72 and the third crossbar 73, e.g. Figures 5, 6 ) or between the rod-shaped components 2, 3 and the bracket legs 11, 12 ( 7 ), e.g. in the middle.
  • the first tension spring 410 can be hung on the protruding end on the right on the first crossbar 71 and third crossbar 73 and the second tension spring 420 on the protruding end on the left on the second crossbar 72 and third crossbar 73 .
  • the tension springs 410, 420 can be suspended between the rods 2, 3, for example by means of suspension hooks.
  • first, second and third crossbeams 71, 72, 73 can be positioned flush with the rod-shaped components 2, 20; 3, 30 or the hanger arms 11, 12 of the hanger 1, in particular welded.
  • the first tension spring 410 and second tension spring 420 are shown arranged in a substantially V-shape in the basic state or rest state of the bracket 11 .
  • the bracket 1 is kept folded out in the basic state or state of rest, with the spring forces of the first tension spring 410 and the second tension spring 420 essentially balancing out.
  • a single tension spring 430 can be arranged in a V-shape between the first crossbeam 71 and the second crossbeam 72, which is connected to the third crossbeam 73 in its central region (seen in its longitudinal direction) (Fig figure 5 shown schematically).
  • a single tension spring 430 is sufficient.
  • the central area of the single tension spring 430 (seen in its length direction) can be free of coils, e.g. it can be pulled flat or bent up, so that the spiral-shaped tension spring parts adjoining on both sides can hook onto the third crossbeam 73 and can apply the spring force to the first crossbar 71 or the spring force to the second crossbar 72 .
  • tension spring 430 it can also be attached at its ends and in its center (seen in its longitudinal direction) to the first, second and third crossbeams 71, 72, 73, in each case at their protruding ends ( figure 5 ) and/or in their midst ( 7 ) fixed, e.g. hung or hooked.
  • the distance between the cross bar 6 and the first cross bar 71 can be selected to be equal to the distance between the cross bar 6 and the second cross bar 72, and the first tension spring 410 and the second tension spring 420 can have the same length and spring force, ie the same spring constants. be chosen (see Figures 5 to 7 ). In such a symmetrical arrangement (symmetrical V-shape at rest) two identical springs 410, 420 can be used.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Joining Of Building Structures In Genera (AREA)
EP21208934.6A 2020-11-24 2021-11-18 Liaison murale Active EP4001530B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH01499/20A CH718087A8 (de) 2020-11-24 2020-11-24 Doppelwand-Stossbewehrung.
CH7222021 2021-06-22

Publications (2)

Publication Number Publication Date
EP4001530A1 true EP4001530A1 (fr) 2022-05-25
EP4001530B1 EP4001530B1 (fr) 2023-05-24

Family

ID=78824682

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21208934.6A Active EP4001530B1 (fr) 2020-11-24 2021-11-18 Liaison murale

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EP (1) EP4001530B1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3127771A1 (fr) * 2021-10-05 2023-04-07 Idsb Ingenierie Mur à coffrage intégré avec moyen de liaison déployable et kit de liaison pour un tel mur à coffrage intégré

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1644592A1 (fr) * 2003-11-03 2006-04-12 Coffor Internacional Exploracao de Patentes Lda Coffrage a resistance elevee pour mur en beton
FR2942824A1 (fr) * 2009-03-09 2010-09-10 Fehr Mur a coffrage integre avec armature de liaison
EP2495375A1 (fr) 2011-03-02 2012-09-05 H&H Technologies Mur à coffrage intégré avec élément mobile de liaison pivotant
FR3021981A1 (fr) * 2014-06-06 2015-12-11 Faceinvent S A Dispositif de liaison pour relier des structures prefabriquees

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1644592A1 (fr) * 2003-11-03 2006-04-12 Coffor Internacional Exploracao de Patentes Lda Coffrage a resistance elevee pour mur en beton
FR2942824A1 (fr) * 2009-03-09 2010-09-10 Fehr Mur a coffrage integre avec armature de liaison
EP2495375A1 (fr) 2011-03-02 2012-09-05 H&H Technologies Mur à coffrage intégré avec élément mobile de liaison pivotant
FR3021981A1 (fr) * 2014-06-06 2015-12-11 Faceinvent S A Dispositif de liaison pour relier des structures prefabriquees

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3127771A1 (fr) * 2021-10-05 2023-04-07 Idsb Ingenierie Mur à coffrage intégré avec moyen de liaison déployable et kit de liaison pour un tel mur à coffrage intégré
EP4163449A1 (fr) * 2021-10-05 2023-04-12 IDSB Ingenierie Mur a coffrage integre avec moyen de liaison deployable et kit de liaison pour un tel mur a coffrage integre

Also Published As

Publication number Publication date
EP4001530B1 (fr) 2023-05-24

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