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WO2003066990A1 - Ensemble a corps en verre - Google Patents

Ensemble a corps en verre Download PDF

Info

Publication number
WO2003066990A1
WO2003066990A1 PCT/EP2003/000835 EP0300835W WO03066990A1 WO 2003066990 A1 WO2003066990 A1 WO 2003066990A1 EP 0300835 W EP0300835 W EP 0300835W WO 03066990 A1 WO03066990 A1 WO 03066990A1
Authority
WO
WIPO (PCT)
Prior art keywords
glass
arrangement according
glass body
flat
arrangement
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.)
Ceased
Application number
PCT/EP2003/000835
Other languages
German (de)
English (en)
Inventor
Fritz-Dieter Doenitz
Herbert Jung
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.)
Schott AG
Carl Zeiss AG
Original Assignee
Carl Zeiss AG
Schott Glaswerke 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 Carl Zeiss AG, Schott Glaswerke AG filed Critical Carl Zeiss AG
Priority to AU2003210191A priority Critical patent/AU2003210191A1/en
Publication of WO2003066990A1 publication Critical patent/WO2003066990A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/30—Columns; Pillars; Struts
    • E04C3/36—Columns; Pillars; Struts of materials not covered by groups E04C3/32 or E04C3/34; of a combination of two or more materials
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/28—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of materials not covered by groups E04C3/04 - E04C3/20
    • E04C3/285—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of materials not covered by groups E04C3/04 - E04C3/20 of glass

Definitions

  • the present invention relates to an arrangement of a glass body on a substantially flat body, for example a steel plate, and the use of such an arrangement.
  • the forces are known via “soft materials” such as plastics, known from DE-A-43 42 097 or soft metals such as lead, known from WO-A-2000/23265 in
  • the glass is an ideally elastic, but brittle material. With this material there is no possibility of reducing stress peaks in the form of plastic deformation. These stress peaks can be caused by processing and assembly inaccuracies.
  • soft intermediate layers between the glass and the basic structure it is possible to introduce low compressive forces at surface pressure values of up to approx. 20 N / mm 2 from the basic structure into the glass.
  • the object of the present invention is to provide an arrangement with which it is possible to introduce very high forces (compressive stresses) into brittle-refractory material, in particular into vitreous bodies.
  • the object of the present invention is achieved by arranging a vitreous body on an essentially flat body, the flat body being made of a material whose elastic limit is not exceeded when the vitreous body acts upon it.
  • the glass body is preferably a glass tube, a glass rod, a glass pane or a laminated glass body, in particular a laminated glass tube.
  • the material from which the flat body is made is essentially a metal or a metal alloy, in particular steel.
  • the contact surfaces between the glass body and the flat body are preferably plane-parallel and have approximately the same roughness. Particularly when the glass body exerts a high force on the flat body, the contact surfaces between the glass body and the flat body should have a low roughness.
  • the roughness of the contact surface of the glass body is preferably less than the permissible elastic deformation of the glass body under the load.
  • At least one intermediate layer can be provided between the glass body and the flat body, in particular for the compensation of thermal stresses.
  • a preferred embodiment of the invention is an arrangement of a glass body between two substantially flat bodies, for example a glass tube, which is arranged in a columnar manner between two steel plates.
  • the glass body and the two flat bodies are preferably firmly but releasably connected to one another, for example via a rod or a rope, which run through the interior of the glass tube.
  • the two flat bodies particularly preferably exert a permanent compressive stress on the glass body, in particular via clamping elements.
  • an arrangement of a vitreous body on an essentially flat body is proposed, with which it is possible to introduce compressive stresses of up to several hundred N / mm 2 into the vitreous body.
  • the entire area of the force application point on the glass body is ground by machining the glass surface.
  • the flatness and roughness of the contact surface on the glass body and on the counter material are primarily decisive for the transferable voltage. The higher the desired tension values are, the more even the contact surface has to be made and the lower the roughness values of the surfaces have to be.
  • the maximum permissible unevenness may be just large enough that the resulting bending tensile stress does not reach inadmissibly high values of about 7 N / mm 2 between two support points of the glass surface on the counter surface.
  • the counter surface to the glass body must have strength values that correspond at least to the desired pressure load value in the glass.
  • the counter surfaces to the glass must not tend to creep under the stresses; the elastic limit must not be exceeded.
  • glass Because of its transparency, glass is suitable for many applications that place high demands on aesthetics. However, its use is restricted if additional strength requirements are imposed or forces are introduced into the glass.
  • the invention is primarily intended for use with flat glass and glass tubes, but can in principle be applied to all brittle materials such as ceramics, natural stone, clay materials, porcelain stoneware and the brittle metals.
  • the permissible stresses for glass loading are for the glass type DURAN®, borosilicate glass 3.3, which is often used in technical applications such as pressure vessel construction, for the permanent loading under pressure 100 N / mm 2 and for the fatigue strength under tensile loading, depending on the surface quality, 7 to 10 N. / mm 2 .
  • the permissible loads are therefore so low that there is sufficient security for additional errors, such as undetected machining errors.
  • the actual glass compressive strength is considerably higher.
  • the counter surface contains hard metals or metal alloys. According to the invention, these counter surfaces are particularly suitable. According to the invention, the arrangement is used in interior construction, in construction, in architectural applications, in furniture and trade fair construction, in pipeline and plant construction, for mast, support and support structures and in lighting technology.
  • FIG. 1 shows a side view of the arrangement according to the invention
  • FIG. 2 shows a lateral sectional drawing and detailed drawing (Z) of an arrangement according to the invention
  • FIG. 3 shows a lateral sectional drawing and detailed drawing (Z) of an arrangement according to the prior art.
  • a glass tube (1) is shown, which has force-transmitting documents (2) at both ends.
  • the force (F) acts on both force-transmitting documents (2).
  • Fig. 2 shows an ideal flow of force, with only compressive forces acting.
  • the contact zone (K) does not deform.
  • 3 shows lines of force (F) with the contact zone deformed under the action of force.
  • the resulting tensile stress FR breaks the glass tube.
  • a glass tube (outer diameter 80 mm, wall thickness 3.0 mm, length 700 mm) is placed in a hydraulic pressure testing machine, the end faces of which were ground before the test.
  • hardened and plane-ground steel plates with a permissible tensile strength of 1100 N / mm 2 serve as force-transmitting documents between the pressure plates of the testing machine and the glass tube.
  • the test force is increased with a load increase of 1.5 kN / (mm 2 s) up to a value of 400 kN and kept constant for several minutes. This corresponds to a compressive stress in the glass tube of 551 N / mm 2 .
  • the force flow that occurs is shown in FIG. 2.
  • the compressive force is ideally introduced from the testing machine into the glass tube without undue deformation of the contact surfaces.
  • the test force is then reduced to zero at the same speed as that previously applied. After the test, the test tube shows no damage.
  • even compressive stresses of up to 800 N / mm 2 can be introduced into the glass tube.
  • the same glass tube is placed on a polyamide 6.6 base.
  • the increase in force occurs again at the same speed as in the example.
  • the first longitudinal cracks already appear in the glass tube at a compressive stress of 70 N / mm 2 , caused by an impermissibly high tangential tensile stress in the end region of the glass tube.
  • the glass tube finally collapses at a tension of 97 N / mm 2 .
  • the polyamide underlay deforms with increasing load.
  • the glass tube is pressed ever deeper into the polyamide material and displaces the polyamide. Frictional forces occur between the polyamide and the glass contact zone, which lead to impermissibly high radial and in particular tangential tensile stresses, which ultimately cause the glass to break.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Securing Of Glass Panes Or The Like (AREA)

Abstract

La présente invention concerne un ensemble constitué d'un corps en verre se trouvant sur un corps sensiblement plat, caractérisé en ce que ce corps plat est constitué d'une matière dont la limite d'élasticité n'est pas dépassée lorsqu'une force s'exerce sur le corps en verre.
PCT/EP2003/000835 2002-02-08 2003-01-28 Ensemble a corps en verre Ceased WO2003066990A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003210191A AU2003210191A1 (en) 2002-02-08 2003-01-28 Glass body arrangement

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10205460.6 2002-02-08
DE10205460 2002-02-08

Publications (1)

Publication Number Publication Date
WO2003066990A1 true WO2003066990A1 (fr) 2003-08-14

Family

ID=27634847

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2003/000835 Ceased WO2003066990A1 (fr) 2002-02-08 2003-01-28 Ensemble a corps en verre

Country Status (3)

Country Link
AU (1) AU2003210191A1 (fr)
DE (1) DE10303324A1 (fr)
WO (1) WO2003066990A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004035958A1 (fr) * 2002-10-17 2004-04-29 Schott Ag Composant terminal pour tuyaux constitues d'un materiau fragile et cassant

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE851254C (de) * 1938-04-26 1952-10-02 Zimmermann Fa G Kittlose Verglasung fuer Waende und Daecher
DE888456C (de) * 1942-10-23 1953-09-03 Zimmermann Fa G Verglasung mit auf Sprossen kittlos befestigten Glastafeln
DE897755C (de) * 1951-09-11 1953-11-23 Glasbau Heinrich Hahn Profiltraeger
DE19818727A1 (de) * 1998-04-27 1999-11-25 Volker Bastian Glas-Bauwerk

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE851254C (de) * 1938-04-26 1952-10-02 Zimmermann Fa G Kittlose Verglasung fuer Waende und Daecher
DE888456C (de) * 1942-10-23 1953-09-03 Zimmermann Fa G Verglasung mit auf Sprossen kittlos befestigten Glastafeln
DE897755C (de) * 1951-09-11 1953-11-23 Glasbau Heinrich Hahn Profiltraeger
DE19818727A1 (de) * 1998-04-27 1999-11-25 Volker Bastian Glas-Bauwerk

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
G. DANAU: "Bouwen met Glas", HET INGENIEURSBLAD, no. 1-2, 2000, pages 36 - 42, XP002242587 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004035958A1 (fr) * 2002-10-17 2004-04-29 Schott Ag Composant terminal pour tuyaux constitues d'un materiau fragile et cassant

Also Published As

Publication number Publication date
AU2003210191A1 (en) 2003-09-02
DE10303324A1 (de) 2003-08-28

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