WO1997030239A1 - Element de coffrage - Google Patents

Element de coffrage Download PDF

Info

Publication number
WO1997030239A1
WO1997030239A1 PCT/EP1997/000399 EP9700399W WO9730239A1 WO 1997030239 A1 WO1997030239 A1 WO 1997030239A1 EP 9700399 W EP9700399 W EP 9700399W WO 9730239 A1 WO9730239 A1 WO 9730239A1
Authority
WO
WIPO (PCT)
Prior art keywords
strips
formwork element
quiver
solid sheet
metal
Prior art date
Application number
PCT/EP1997/000399
Other languages
German (de)
English (en)
Inventor
Sven Obernolte
Original Assignee
Sven Obernolte
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 Sven Obernolte filed Critical Sven Obernolte
Priority to EP97902262A priority Critical patent/EP0880626B1/fr
Priority to DE59702313T priority patent/DE59702313D1/de
Priority to AT97902262T priority patent/ATE196177T1/de
Publication of WO1997030239A1 publication Critical patent/WO1997030239A1/fr

Links

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
    • E04B2/8658—Walls made by casting, pouring, or tamping in situ made in permanent forms using wire netting, a lattice or the like as form leaves
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/30—Columns; Pillars; Struts
    • E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders

Definitions

  • the invention relates to a formwork element with a wall panel made of broken metal.
  • Such formwork elements are used for lost concrete formwork, for example as quiver formwork, as described in DE-94 06 373 U, or also as shut-off elements for concrete joint formations between successive concreting sections. Examples of shut-off elements of the latter type are described in DE 295 00 514 U and DE 295 00 515 U.
  • the wall panel is formed by preferably profiled perforated sheet metal.
  • the object of the invention is to provide a formwork element, in particular in the form of a quiver for quiver formwork, which can be produced inexpensively, results in good interlocking with the concrete and yet has a high degree of stability.
  • the wall panel of the formwork element is formed by an alternating sequence of parallel, integrally connected strips of expanded metal and solid sheet.
  • Expanded metal sheets are usually produced using a cycle-wise working machine which punches a series of slots into the sheet metal in each cycle and then stretches the material so that a row of meshes is formed. The material is then transported on until the next cycle starts.
  • the wall panel of the formwork element according to the invention can be produced simply by carrying out the material without punching and stretching after a certain number of cycle steps, so that a solid sheet metal strip of the desired width is obtained. In the wall panel produced in this way, the strips of expanded metal and solid sheet thus run perpendicular to the direction of expansion of the expanded metal.
  • the strips of solid sheet metal that are incorporated into the wall panel in this way form an integrated stiffening, by means of which the stability of the wall panel is increased without additional stiffening elements having to be welded on.
  • the strips of expanded metal between the solid sheet strips ensure good interlocking with the concrete.
  • the stability can be further increased by profiling the wall panel obtained in this way.
  • the profiling is preferably carried out in the running direction of the strips, the zones with the narrowest bending radii preferably lying in the solid sheet strips or in the transition regions between solid sheet and expanded metal.
  • the wall panel Since the wall panel consists of only one layer of material, it can also be bent in the direction perpendicular to the direction of travel of the strips, so that the form of the formwork element can be adapted to the particular application. Even a wall panel profiled in the running direction of the strips can be bent in the direction perpendicular to the running direction if the profile is selected appropriately. In this case, an approximately trapezoidal profile is particularly expedient, in which the solid sheet metal strips are not or only weakly profiled and form the base sides of the trapezoids, while the expanded metal forms the oblique flanks of the trapezoids. If the wall panel is then bent or folded perpendicular to the direction of the profile, the solid sheet strips only oppose the deformation to a relatively low resistance.
  • the solid sheet strips lying inside with respect to the bending curvature are subjected to pressure during bending or edging and dodge to the outside, so that they are bent relatively sharply, while the outer solid sheet strips are bent more gently.
  • the expanded metal allows the balance between the different deformations of the solid sheet strips.
  • the solution according to claim 6 relates specifically to quiver formwork.
  • the walls of the quiver have to withstand above all the inward pressure of the surrounding concrete, while the mechanical stress in the axial direction of the quiver is relatively low.
  • the walls of the quiver are usually provided with a circumferential profile.
  • the walls of the quiver are formed by circumferential strips of solid sheet metal which are connected to one another by expanded metal.
  • the walls need only have a relatively rough profile, which can also be produced in a continuous expanded metal sheet.
  • This solution is therefore not limited to the use of a one-piece wall panel according to claim 1, but can also be realized by welding individual strips of solid sheet metal onto a continuous expanded metal panel.
  • the welding of the essentially flat solid sheet metal strips to the also flat expanded metal is relatively easy and does not require a great deal of work, especially since the solid sheet metal strips can be welded onto a flat, profiled or non-profiled expanded metal sheet, which is only folded later in the manner described above, by a closed one ⁇ to form a quiver.
  • the quiver Since the wall material can be folded in spite of the profiling without having to provide cutouts on the bending lines, the quiver has a high stability at the edges. It is therefore easily possible to bring the quiver into a flat state for transport purposes by pressing it together in a diamond shape from two diagonally opposite corners. At the construction site, the quiver can then be deformed back into the ready-to-use state. This process can even be repeated several times without excessive material fatigue occurring on the bending lines. Further details and refinements of the invention result from the subclaims.
  • Figure 1 shows a section of a formwork element in the form of a flat wall panel.
  • Figure 2 is a perspective view of a formwork element in the form of a quiver.
  • Fig. 6 is a plan view of a quiver in a flat lay
  • the formwork element shown in FIG. 1 has the shape of a flat wall panel 10, which is produced in one piece from a single-layer steel sheet which has a thickness of, for example, 1 mm.
  • the sheet is slotted and stretched in sections, so that a plurality of parallel strips 12 of solid sheet are formed, which are connected to one another by strips 14 of expanded metal lying between them.
  • the stretching direction of the expanded metal is perpendicular to the running direction of the strips 12, 14.
  • the strips 12, 14 have approximately the same width.
  • the width ratio can be varied depending on the stability requirements.
  • the expanded metal strips should preferably each have a width of at least three or four meshes.
  • FIG. 2 shows a formwork element in the form of a quiver 16, the walls 18 of which are made in one piece from a wall panel 10 of the type shown in FIG.
  • the blackboard 10 is first in the direction of the
  • Strips 12, 14 profiled as shown for example in Figure 3 or 4.
  • the Solid sheet then forms two groups of strips 12, 12 'which alternate with one another and lie approximately in two offset planes and which form the ridges and valleys of the profile, while the strips 14 made of expanded metal essentially form the profile flanks.
  • the wall panel thus profiled is then bent at four bending lines 20 running perpendicular to the running direction of the profile, and the free ends are welded to one another, so that the quiver shown in FIG. 2 is obtained, which has the shape of a square or rectangular column.
  • the strips 12, which are further outward with respect to the quiver, are gently rounded at the bending lines 20 during bending. These curves significantly increase the stability of the quiver against the external pressure of the concrete.
  • the strips 12 lying further inside are subjected to pressure at the bending zones and, with the formation of relatively sharp kinks 22, turn outwards.
  • the strips 12 'thus lie inward in the surface of the walls 18 with respect to the strips 12, but are slightly curved outwards towards the bending lines 20, so that the kinks 22 essentially with the rounded areas of FIG Stripes 12 are flush. In this way, essentially straight, continuous bending lines are formed, which allow the material to be deformed relatively easily.
  • the different deformations of the strips 12 and 12 ' are compensated for in the area of the bending lines by the relatively easily stretchable and compressible expanded metal 14.
  • the profile of the wall panel 10 or the walls 18 of the quiver 16 can be varied in a variety of ways. While the strips 12, 12 'are flat in the example shown in FIG. 3, it may be expedient for stability reasons to lightly profile these strips of full metal.
  • Figure 4 shows an example of a slightly rounded profile of the strips 12, 12 '.
  • these strips can also have a triangular or trapezoidal profile, so that they also form parts of the profile flanks mainly formed by the expanded metal.
  • the strips 14 of expanded metal form the ridges and valleys, while the profile flanks are formed by solid sheet metal.
  • the profile shown in FIG. 5 can also be used for the walls 18.
  • the strips 14 are parts of a continuous expanded metal sheet onto which individual strips 12, 12 'made of solid sheet metal are welded.
  • the strips 12, 12 ' can be profiled or non-profiled. In the example shown, they are installed alternately on opposite sides of the expanded metal panel. However, they can also be arranged on the same side of the expanded metal sheet.
  • the strips of solid metal are preferably first welded to the flat expanded metal sheet in a flat state, and then the expanded metal and the solid sheet are profiled in one operation. The profile can then be bent into the quiver 16 in a manner similar to the profiles according to FIGS. 3 and 4.
  • the quiver 16 Due to the great flexibility at the bending lines 20, it is also possible to press the quiver 16 into a diamond shape during transport, as shown in FIG. 6. This allows the transport volume and costs to be reduced considerably. At the construction site, the quiver can be easily deformed back into the ready-to-use state according to FIG. 2.
  • a base (not shown) into the case 16, which can also be provided with a profile of the type shown in FIGS. 3 to 5 from a wall panel.
  • the floor can engage the profile of the walls 18 with two opposite edges or can rest on inwardly bent angles at the lower ends of the walls 18. Due to the openings formed by the expanded metal, the floor is desirably permeable to water.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Saccharide Compounds (AREA)
  • Bipolar Transistors (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)

Abstract

L'invention concerne un élément de coffrage comportant un panneau de paroi (10) en métal ajouré, caractérisé en ce que le panneau de paroi présente une succession alternée de bandes solidarisées parallèles en métal déployé (12) et en tôle pleine (14).
PCT/EP1997/000399 1996-02-12 1997-01-30 Element de coffrage WO1997030239A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP97902262A EP0880626B1 (fr) 1996-02-12 1997-01-30 Element de coffrage
DE59702313T DE59702313D1 (de) 1996-02-12 1997-01-30 Schalungselement
AT97902262T ATE196177T1 (de) 1996-02-12 1997-01-30 Schalungselement

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19605079A DE19605079C1 (de) 1996-02-12 1996-02-12 Schalungselement
DE19605079.0 1996-02-12

Publications (1)

Publication Number Publication Date
WO1997030239A1 true WO1997030239A1 (fr) 1997-08-21

Family

ID=7785176

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1997/000399 WO1997030239A1 (fr) 1996-02-12 1997-01-30 Element de coffrage

Country Status (4)

Country Link
EP (1) EP0880626B1 (fr)
AT (1) ATE196177T1 (fr)
DE (2) DE19605079C1 (fr)
WO (1) WO1997030239A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103052759A (zh) * 2010-08-03 2013-04-17 法布里齐奥·马尔蒂利 用于组成模块化模板以建造具有复杂形状特征的混凝土墙的一次性模具的系统

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2884500A (en) * 1998-11-09 2000-05-29 Steven Alan Wolfowitz Building element
DE20015872U1 (de) 2000-09-13 2001-04-26 Hagedorn Claudia Aussparungskasten aus Gummigranulat
DE202011050999U1 (de) 2011-08-16 2012-11-23 Sven Obernolte Bausatz für eine Köcherschalung
DE102015223112A1 (de) * 2015-11-23 2017-05-24 Mako Gmbh & Co. Kg Schalungstechnik Schalungselement

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB441145A (en) * 1934-07-16 1936-01-14 George Nether Burgess Improvements in and connected with the erection of reinforced concrete structures
US5081814A (en) * 1990-10-22 1992-01-21 Alabama Metal Industries Lath panel and method of manufacture
DE9406373U1 (de) * 1994-04-16 1994-06-30 Dillinger Stahlbau Schalungsblech
WO1995012719A1 (fr) * 1993-11-02 1995-05-11 Coffratherm Fabrication de coffrage
DE29507162U1 (de) * 1995-04-28 1995-07-06 Lu Sin Yang Wandkonstruktion für Gebäude

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9005482U1 (fr) * 1990-05-14 1991-09-12 Fischer, Willibald, 8312 Dingolfing, De
DE9203276U1 (fr) * 1992-03-11 1993-07-15 Peca-Verbundtechnik Gmbh, 8312 Dingolfing, De
DE29500514U1 (de) * 1995-01-14 1996-05-09 Obernolte Sven Absperrelement
DE29500515U1 (de) * 1995-01-14 1996-05-09 Obernolte Sven Schalungselement

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB441145A (en) * 1934-07-16 1936-01-14 George Nether Burgess Improvements in and connected with the erection of reinforced concrete structures
US5081814A (en) * 1990-10-22 1992-01-21 Alabama Metal Industries Lath panel and method of manufacture
WO1995012719A1 (fr) * 1993-11-02 1995-05-11 Coffratherm Fabrication de coffrage
DE9406373U1 (de) * 1994-04-16 1994-06-30 Dillinger Stahlbau Schalungsblech
DE29507162U1 (de) * 1995-04-28 1995-07-06 Lu Sin Yang Wandkonstruktion für Gebäude

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103052759A (zh) * 2010-08-03 2013-04-17 法布里齐奥·马尔蒂利 用于组成模块化模板以建造具有复杂形状特征的混凝土墙的一次性模具的系统
CN103052759B (zh) * 2010-08-03 2016-08-03 法布里齐奥·马尔蒂利 实现竖直混凝土铸件的模块化模板的一次性模具的系统

Also Published As

Publication number Publication date
ATE196177T1 (de) 2000-09-15
DE19605079C1 (de) 1997-09-18
EP0880626A1 (fr) 1998-12-02
EP0880626B1 (fr) 2000-09-06
DE59702313D1 (de) 2000-10-12

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