EP0692585A1 - Elément de coffrage - Google Patents

Elément de coffrage Download PDF

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Publication number
EP0692585A1
EP0692585A1 EP95110700A EP95110700A EP0692585A1 EP 0692585 A1 EP0692585 A1 EP 0692585A1 EP 95110700 A EP95110700 A EP 95110700A EP 95110700 A EP95110700 A EP 95110700A EP 0692585 A1 EP0692585 A1 EP 0692585A1
Authority
EP
European Patent Office
Prior art keywords
wall
formwork element
wire
element according
slots
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
EP95110700A
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German (de)
English (en)
Other versions
EP0692585B1 (fr
Inventor
Manfred Bruer
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Priority claimed from DE19944424361 external-priority patent/DE4424361C2/de
Application filed by Individual filed Critical Individual
Publication of EP0692585A1 publication Critical patent/EP0692585A1/fr
Application granted granted Critical
Publication of EP0692585B1 publication Critical patent/EP0692585B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • E04B2/8652—Walls made by casting, pouring, or tamping in situ made in permanent forms with ties located in the joints of the forms

Definitions

  • the invention relates to a formwork element with an inner and an outer wall made of hard foam and a certain number of crosspieces, which are anchored in a form-fitting manner in the two walls and fix them at a certain transverse distance from one another.
  • DE-GM 70 20 765 describes a formwork element with two parallel wall parts, which are held together by angled pieces of wire.
  • the simple hooking of the wire pieces in the wall parts is problematic with hard foam formwork elements, since the relatively soft hard foam can be deformed or even breaks out under the pressure of the inflowing concrete due to the unfavorable application of force.
  • Formwork elements made of rigid foam are already known, in which the crosspieces also consist of rigid foam and which are thus made in one piece from rigid foam.
  • the rigid foam crosspieces only allow them to be classified in a low fire resistance class, since the rigid foam crosspieces melt away in the event of a fire and the fire on the opposite one Can penetrate the wall side.
  • the rigid foam webs In order to be able to withstand the dynamic forces mentioned above during the filling process, the rigid foam webs must have a relatively large diameter, which limits the static load-bearing capacity of the wall. Due to the relatively large diameter, there is still the problem that the filling process is hindered in such a way that air pockets can occur.
  • the wide webs are also unsuitable for supporting reinforcing steels, since the reinforcing steels are not covered with concrete due to the wide support and are therefore susceptible to corrosion.
  • formwork elements made of rigid foam in which the crosspieces for holding the walls together consist of shaped steel sheets.
  • the steel sheets are subsequently inserted into fastening slots. Since the steel sheets are exposed to high loads during the filling process due to their large area, there was a risk of breakouts in the area of the fastening slots.
  • the object of the invention is to provide a formwork element of the type described in the opening paragraph, in which the above-mentioned problems relating to deformation and material breakouts do not appear.
  • the object is achieved in that the wire crosspieces rest on the base of fastening joints which extend vertically from the upper edge or lower edge of the wall and are open to the inside of the wall, and the legs of the wire crosspieces which are angled at their ends in a direction parallel to the wall , are anchored in elongated holes that extend parallel to the wall in the vertical direction in the expansion of the fastening joints.
  • the relatively large-area fastening receptacles of the wire webs and, above all, the ends that are angled in the longitudinal direction result in a very torsionally rigid formwork element, where the risk of material breakouts is excluded. Otherwise, due to the support of the wire crosspieces at the base of the fastening joints and the good abutment of the legs with their angled ends, a favorable introduction of force is achieved.
  • wire crosspieces can be easily inserted into the formwork walls from above and below, which, in contrast to the component described in DE-GM 70 20 765, enables simple assembly.
  • crossbars made of suitable, profiled plastics that can be fiber-reinforced can be used.
  • the formwork element is manufactured by foaming the walls with the fastening joints and then inserting the wire crosspieces.
  • the wire crosspieces are preferably anchored in the two walls near the upper and lower edges of the formwork element.
  • the wavy profile proves to be advantageous in the manufacture of the wall, since the correspondingly curved swords used in the manufacturing mold for the formwork element are stiffer than swords would be.
  • the fastening joints for receiving the wire pieces are each advantageously arranged in a solid area which lies between two slots in the row closest to the inside. In this way, a triangular force introduction area can be obtained, the favorable shape of which reduces the material load on the rigid foam during the filling process.
  • the slots taper towards their upper or lower end. This increases the strength of the wall and the fastening elements in the upper or lower region, and the shaping of the walls after the foaming process is simplified.
  • the formwork element shown in Fig. 1 and Fig. 2 consists of two walls 10 and wire crosspieces 12 connecting them, which are U-shaped wire pieces.
  • the wire crosspieces 12 are inserted into fastening joints 14 on the top and bottom of the walls 10.
  • the formwork element has fastening elements 16, 17 and groove elements 18, 19 as fastening elements on all sides, which engage when fitting together similar formwork elements in corresponding nose and groove elements of the abutting surface.
  • the inside walls have vertical recesses 20, through which a better connection of the wall with the concrete filling is achieved.
  • the fastening joints 14 are designed so that the wire crosspieces 12 can easily be inserted into the walls from above or below, with a correspondingly small one Groove cross section is prevented that the wire crosspieces 12 can fall out of the fastening joints 14 when the formwork element is in the appropriate position.
  • the legs 22 of the U-shaped wire crosspieces 12 sit in holes 24 which extend in the vertical wall direction at the outer end of the fastening joints 14.
  • the fastening joints 14 are only designed to be relatively flat so that the wire crosspieces 12 form a cross connection in the area of the top and bottom of the formwork element, since in this area the load on the walls 10 is greatest during the filling process.
  • Fig. 1 you can also see two rows of air slots 26, 28 arranged in the wall 10.
  • the two rows of air slots 26, 28 ensure that the outside of the wall 10 carrying the plaster layer is decoupled from its inside in terms of vibration. For this it is necessary that the louvers 26, 28 are arranged to overlap and only a narrow web 30 remains in the overlap area between them. Bends 32, 34 of the edge areas of the air slots 26, 28 from one another lead to a further improvement in the acoustic decoupling.
  • the air slots 26, 28 have cross sections 36, 38 on the upper side which are smaller than the cross sections 40, 42 on the underside of the walls 10. As can be seen in FIG. 3, a conical section 44, 46 lies between these different cross sections The measure serves to improve the stability of the wall 10 in the region of its upper fastening elements 16, 18.
  • projections 47, 49 are provided in the central slot area (see also FIG. 6). The purpose of these is to allow the hard foam to be deformed only when the external force occurs until the projections 47, 49 bear against the opposite side of the slot, thereby avoiding impermissible stress on the material.
  • Another feature of the illustrated embodiment is that no air slots are arranged in the area of the fastening joints 14 for the wire crosspieces 12 and the air slots 28 located on the outside of the wall are also guided around this area.
  • the resultant, essentially triangular, material accumulation 48 guarantees an optimal introduction of force of the forces occurring during the filling process from the wall 10 into the wire crosspieces 12. Since the recesses in the slots 26, 28 for sound insulation purposes is at the expense of the stability of the walls 10, one is uniform force transmission of particular importance.
  • a crossed pair 50 of two wire webs can be used instead of two adjacent wire cross webs 12.
  • the two pieces of wire are fastened to one another in a suitable manner, for example welded or clamped together. This significantly improves the torsional stability of the formwork element.
  • FIG. 5 shows two possible variants 60, 70 of a simple wire crosspiece.
  • 62 reinforcement bars can be fixed between two brackets.
  • beads 72 are formed on the upper side of the wire crosspiece, into which the reinforcing steels can be inserted.
  • FIG. 6 and 7 show a possible embodiment variant of a formwork element.
  • the slots 26, 28 are connected in their overlap area by connecting holes 80 which extend perpendicular to the wall surface up to the outside of the wall and are closed on the outside during plastering. This creates a pressure equalization between the slots 26, 28, which significantly improves the sound insulation behavior of the filled and plastered formwork element in the low frequency range.
  • the holes have a hole diameter of approximately 5 mm, so that on the one hand the desired acoustic effect is achieved and on the other hand the application of the wall plaster is not unnecessarily difficult.
  • the side spacing of the holes depends on the position of the overlapping areas of the slots 26, 28.
  • connection holes 80 can be increased by additional connections (not shown) between the two rows of slots and / or between the slots of a row in the region of the fastening elements 16, 18.
  • adjacent thin air slots can be provided in the shuttering walls 10 of the shuttering element, which extend from below to approximately 1 cm below the nose elements on the top of the shuttering walls 10.
  • the louvers are preferably kept very narrow, e.g. B. only about 1 to 2 mm, on the one hand not to significantly affect the strength of the formwork element, but on the other hand to make the wall more flexible in the transverse direction and thereby to ensure an improved sound insulation behavior of the wall.
  • the louvers should take up about 2/3 of the total length of the formwork element. They each have a wave profile in the middle. This is advantageous because the correspondingly curved swords used to manufacture the narrow, long slots in the manufacturing mold for the formwork element are stiffer than swords would be.
  • This wavy design is also advantageous for the double rows of slots for the same reasons. In the double-row embodiment described, the wavy profile of the outer slots 28 in the region of the ribs 49 can be seen particularly well in FIG. 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Artificial Fish Reefs (AREA)
EP95110700A 1994-07-11 1995-07-08 Elément de coffrage Expired - Lifetime EP0692585B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE4424361 1994-07-11
DE19944424361 DE4424361C2 (de) 1994-07-11 1994-07-11 Schalungselement
DE19507199 1995-03-02
DE19507199 1995-03-02

Publications (2)

Publication Number Publication Date
EP0692585A1 true EP0692585A1 (fr) 1996-01-17
EP0692585B1 EP0692585B1 (fr) 1997-11-19

Family

ID=25938227

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95110700A Expired - Lifetime EP0692585B1 (fr) 1994-07-11 1995-07-08 Elément de coffrage

Country Status (2)

Country Link
EP (1) EP0692585B1 (fr)
AT (1) ATE160408T1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999011883A1 (fr) * 1997-09-02 1999-03-11 Salvatore Trovato Coffrage ameliore pour murs de batiments
WO1999060223A1 (fr) * 1998-05-19 1999-11-25 Studio Arch. Claudio Luchini Module de finition prefabrique permettant de construire des batiments et batiments construits a l'aide dudit module
WO2006082182A1 (fr) * 2005-02-02 2006-08-10 Henri Clervil Composition pour beton isolant, element de construction pour la realisation d'un coffrage perdu realise avec ce beton, coffrage perdu realise a partir de ces elements et paroi porteuse realisee
EP2385189A3 (fr) * 2010-05-06 2014-03-19 Holzmann GmbH & Co. KG Elément de coffrage
CN107747369A (zh) * 2017-09-26 2018-03-02 河南省森源建筑安装工程有限公司 一种保温楼房及其建筑方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104234415B (zh) * 2014-09-28 2016-08-24 中国建筑第五工程局有限公司东莞分公司 内嵌拉结结构多功能免拆模板施工方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7020765U (de) 1970-06-03 1970-08-27 Rachinger Hermann Julius Vorgefertigter bauteil.
DE2500256A1 (de) * 1975-01-04 1976-07-08 Franz Koch Mauerwerk und verfahren zu seiner herstellung
EP0138712A2 (fr) * 1983-10-12 1985-04-24 Miquel C. Junger Bloc structural d'insonorisation avec des cavités disposées en séquence
DE3436713A1 (de) * 1984-02-14 1985-09-05 Manfred 6204 Taunusstein Bruer Verbindungssteg aus metallblech fuer schalungselemente zum bau von waenden
EP0374064A1 (fr) * 1988-12-16 1990-06-20 Serge Meilleur Coffrage isolant pour mur en béton

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7020765U (de) 1970-06-03 1970-08-27 Rachinger Hermann Julius Vorgefertigter bauteil.
DE2500256A1 (de) * 1975-01-04 1976-07-08 Franz Koch Mauerwerk und verfahren zu seiner herstellung
EP0138712A2 (fr) * 1983-10-12 1985-04-24 Miquel C. Junger Bloc structural d'insonorisation avec des cavités disposées en séquence
DE3436713A1 (de) * 1984-02-14 1985-09-05 Manfred 6204 Taunusstein Bruer Verbindungssteg aus metallblech fuer schalungselemente zum bau von waenden
EP0374064A1 (fr) * 1988-12-16 1990-06-20 Serge Meilleur Coffrage isolant pour mur en béton

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999011883A1 (fr) * 1997-09-02 1999-03-11 Salvatore Trovato Coffrage ameliore pour murs de batiments
US6321498B1 (en) 1997-09-02 2001-11-27 Salvatore Trovato Formwork for building walls
CN1109170C (zh) * 1997-09-02 2003-05-21 萨尔瓦托雷·特罗瓦托 用于建筑物的墙的改进的模板
WO1999060223A1 (fr) * 1998-05-19 1999-11-25 Studio Arch. Claudio Luchini Module de finition prefabrique permettant de construire des batiments et batiments construits a l'aide dudit module
US6474033B1 (en) 1998-05-19 2002-11-05 Studio Arch. Claudio Luchini Prefabricated finishing module for the construction of building constructions and building constructions obtained thereby
AU760283B2 (en) * 1998-05-19 2003-05-08 Claudio Luchini Prefabricated finishing module for the construction of building constructions and building constructions obtained thereby
WO2006082182A1 (fr) * 2005-02-02 2006-08-10 Henri Clervil Composition pour beton isolant, element de construction pour la realisation d'un coffrage perdu realise avec ce beton, coffrage perdu realise a partir de ces elements et paroi porteuse realisee
EP2385189A3 (fr) * 2010-05-06 2014-03-19 Holzmann GmbH & Co. KG Elément de coffrage
CN107747369A (zh) * 2017-09-26 2018-03-02 河南省森源建筑安装工程有限公司 一种保温楼房及其建筑方法

Also Published As

Publication number Publication date
ATE160408T1 (de) 1997-12-15
EP0692585B1 (fr) 1997-11-19

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