EP1022404A1 - Vorfabrizierte Dachbauweise in Stahl- und Spannbeton zur Herstellung von Gebäuden - Google Patents

Vorfabrizierte Dachbauweise in Stahl- und Spannbeton zur Herstellung von Gebäuden Download PDF

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Publication number
EP1022404A1
EP1022404A1 EP00400127A EP00400127A EP1022404A1 EP 1022404 A1 EP1022404 A1 EP 1022404A1 EP 00400127 A EP00400127 A EP 00400127A EP 00400127 A EP00400127 A EP 00400127A EP 1022404 A1 EP1022404 A1 EP 1022404A1
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EP
European Patent Office
Prior art keywords
roofing system
beams
prefabricated
prefabricated roofing
reinforced concrete
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Withdrawn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
EP00400127A
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English (en)
French (fr)
Inventor
Andrea Franchi
Carlo Scotti
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.)
Alerre Engineering Srl
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Alerre Engineering Srl
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 Alerre Engineering Srl filed Critical Alerre Engineering Srl
Publication of EP1022404A1 publication Critical patent/EP1022404A1/de
Withdrawn legal-status Critical Current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
    • E04B7/00—Roofs; Roof construction with regard to insulation
    • E04B7/12—Roofs; Roof construction with regard to insulation formed in bays, e.g. sawtooth roofs

Definitions

  • the invention consists of a prefabricated concrete roofing system reinforced and prestressed for the realization of buildings.
  • This cover is of several types: without light crossing point, shed or with openings for vertical lighting.
  • the width of the halls, or the length of the beams, and the center distance longitudinal posts are elements that also characterize the different types of covers.
  • This last type of cover is called in the jargon of the prefabrication cover ⁇ with wings ⁇ or ⁇ pleated ⁇ because the elements of large span are made of prestressed reinforced concrete components with thin sails tilted like the wings of an airplane or a flying bird, whose transverse profile is deformable (see Figure 1).
  • the roofing system which is the subject of this invention belongs to the families 1c) e 2b).
  • the installation of the membrane involves high costs and the result is unreliable. Indeed, in the in most cases, the upper surface of the beam is sealed by placing the membrane perpendicular to its longitudinal axis, the amount of joints is therefore important. The membrane being exposed to UVA rays, after several years the joints degrade and let the rain pass.
  • Fire resistance is usually another weak point of covers ⁇ with wings ⁇ or ⁇ pleated ⁇
  • the beams being very few thick, fire resistance is low and tends to become almost zero for very long components. Indeed, under the operating load, the concrete and steel stresses are already very high. In case fire, since the thicknesses are small, the temperature increases almost uniformly over the entire cross-section cross beams. The materials therefore degrade over their entire thickness, resulting in rapid collapse of the cover.
  • the too large dimension of the prefabricated covers currently on the market is another negative architectural element
  • the plate rests on the upper surface of the secondary beam, which has his turn is based on the upper surface of the supporting beam.
  • the thickness of the coverage is therefore equivalent to the sum of the thicknesses of its components.
  • roofs made of beams ⁇ to wings ⁇ or ⁇ pleated ⁇ are fairly diffused, for two reasons: a) the market offers nothing better; b) they are accessible to all prefabricators because relatively simple to make.
  • the building cladding can be made of prefabricated panels (8) or in masonry.
  • the system which is the subject of this invention is reliable, light and resistant. he aims to eliminate the drawbacks discussed above while improving aesthetics.
  • the coverage is made up of approximately 60% elements (4) fully compressed instead of elements subjected to a bending force.
  • One of the weak points of covers ⁇ with wings ⁇ or ⁇ pleated ⁇ current resides in the plates in fiber cement or profiled sheet located between the secondary beams.
  • the traditional prefabricated buildings all consist of a assembly of components placed at the ends.
  • the traditional scheme is as follows: beams supported at the ends, i.e. elements subjected to a bending force having the upper surface compressed and the lower surface in traction.
  • the soles connecting the secondary beams are components in an arc (4) supported at the ends (9). Their shape is such that external loads produce in the plate simple compressions for use complete and optimal of its section.
  • the semicircular soles (4) cause on the secondary beams tubular (3) vertical actions (weight + snow load and tightness) and horizontal. These are however easily absorbed by the concrete plate (10) constituting the upper surface of the beam secondary tubular.
  • systems ⁇ with wings ⁇ or ⁇ pleated ⁇ are very sensitive to horizontal actions. Their components have a cross section open which means that the parts subject to cuts do not are not related to each other. The application of horizontal actions would cause intolerable collapse or deformation.
  • the form geometric of the beam (3) is innovative insofar as it is schematically made up of a very rigid triangular tube both at the flexion than torsion due to its shape. Its rigidity increases at the ends when adding transverse closures (11) of a thickness important. All of this greatly reduces distortion and stresses on the materials, giving the system great reliability.
  • the secondary beam (3) is supported on crows (12) projecting by relative to the supporting beam (2).
  • These crows (12) have a surface horizontal of large dimensions to guarantee the realization of a stable assembly and prevent the secondary beam (3) from tipping over during handling or once the structure is finished.
  • the supporting beams (2) in turn rest on the top of the posts (1). It is shaped so that it can fix the end of the beams at the same pole and also allow the passage of water rain.
  • the flanges (4) connecting the secondary beams are arcs of a circle whose lower end (13) rests on the secondary beam (3) and the upper end (14) serves to support the panel for the insertion of joinery (6).
  • the semicircular soles (4) have the same behavior as beams, they are elements subjected to a bending force. From where the need for them to have a slightly greater thickness for be able to withstand external loads.
  • the reinforced concrete panel for the insertion of joinery (6) constitutes not only a passage for outside light but also a support stable for the semicircular sole. It can be endowed, during its manufacture of fixed or automatic opening joinery for allow ventilation according to the regulations in force.
  • the structure which is the subject of this invention solves all the problems architectural and those related to the heterogeneity of materials, mentioned in the section entitled: ⁇ Disadvantages of structures current ⁇ .
  • the height of the roof is very small since the beams load-bearing (2) and the secondary beams (3) are coplanar (their upper surface and lower surface are at the same level). In addition to being pleasant to the eye, this lowers the costs of heating and air conditioning because the cover is more compact than those which are used in current systems.
  • edge plate (5) is flat.
  • the semicircular soles (4) are set back relative to the facade and consequently the cladding (8) of the building may have a lower height than traditional systems. This constitutes a further reduction in building construction costs.
  • the secondary beams (3) are produced in successive phases.
  • the closures (11) have a double role: a) they constitute the support of the secondary beam (3) on the supporting beam (2); b) they give to the beam (3) additional rigidity to resist deformation.
  • the upper surface (10) of the secondary beam (3) can be produced in two technologies: a) concrete pouring on a material basis thermally insulating (18) shaped correctly; b) pose and assembly of a horizontal prefabricated plate on the shaped body of ⁇ V ⁇ of the beam (3).
  • Case a has the advantage of achieving thermal insulation of the beam during the construction phase, which significantly reduces the costs of insulation during on-site work and shorten times sealing performance.
  • the supporting beams (2) are produced in a single phase. Their ends can be closed in case of high stresses due to cutting and twisting forces, the internal cavity (19) is made in insulating material. Like the secondary beams (3), this gives them a high degree of thermal resistance.
  • the most vulnerable beam in the event of fire is the secondary beam (3) because its thickness is reduced.
  • its geometric shape with ⁇ tube triangular ⁇ is a great advantage over beams ⁇ with wings ⁇ or ⁇ pleated ⁇ usual.
  • the sound temperature upper surface (10) remains practically constant and identical to that outside temperature.
  • the increase in temperature in the building does not cause degradation of mechanical characteristics of the beam which has an intrinsic fire resistance greater than that of ⁇ wing ⁇ or ⁇ pleated ⁇ beams currently on the market.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Building Environments (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Gates (AREA)
EP00400127A 1999-01-19 2000-01-19 Vorfabrizierte Dachbauweise in Stahl- und Spannbeton zur Herstellung von Gebäuden Withdrawn EP1022404A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI990085 1999-01-19
ITMI990085 IT1306966B1 (it) 1999-01-19 1999-01-19 Sistema di copertura prefabbricata per edifici industriali ecommerciali

Publications (1)

Publication Number Publication Date
EP1022404A1 true EP1022404A1 (de) 2000-07-26

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Family Applications (1)

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EP00400127A Withdrawn EP1022404A1 (de) 1999-01-19 2000-01-19 Vorfabrizierte Dachbauweise in Stahl- und Spannbeton zur Herstellung von Gebäuden

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EP (1) EP1022404A1 (de)
IT (1) IT1306966B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBO20080655A1 (it) * 2008-10-27 2010-04-28 Borgioni Prefabbricati S R L Copertura per edifici di tipo industriale
EP4227472A1 (de) * 2022-02-10 2023-08-16 Paolo Borgioni Baustoffgruppe zur herstellung einer gebäudeabdeckung

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109518952B (zh) * 2018-12-28 2023-10-20 云南建投第二建设有限公司 一种用于装配式建筑主次梁节点支撑、定位、模板装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1022385A (fr) * 1950-06-22 1953-03-04 Jean Prouve Atel élément de toiture préfabriqué
CH541688A (de) * 1972-04-13 1973-09-15 Buergin Bernhard Dachkonstruktion
DE2363433A1 (de) * 1973-12-20 1975-06-26 Dyckerhoff & Widmann Ag Verfahren zum herstellen eines schalendaches aus stahlbetonfertigteilen mit waermedaemmung
EP0250020A2 (de) * 1986-06-20 1987-12-23 DLC S.r.L. Vorgefertigte, selbsttragende Dachelemente aus Beton für Gebäude
EP0521431A1 (de) * 1991-07-01 1993-01-07 ITALCASE PREFABBRICATI S.r.L. Abdeckvorrichtung für Gebäude, insbesondere für Industrie- und/oder Handelsgebäude
EP0727536A1 (de) * 1995-02-17 1996-08-21 DLC S.r.L. Dachbauweise aus alternierend Dachziegeln und Dachträger

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1022385A (fr) * 1950-06-22 1953-03-04 Jean Prouve Atel élément de toiture préfabriqué
CH541688A (de) * 1972-04-13 1973-09-15 Buergin Bernhard Dachkonstruktion
DE2363433A1 (de) * 1973-12-20 1975-06-26 Dyckerhoff & Widmann Ag Verfahren zum herstellen eines schalendaches aus stahlbetonfertigteilen mit waermedaemmung
EP0250020A2 (de) * 1986-06-20 1987-12-23 DLC S.r.L. Vorgefertigte, selbsttragende Dachelemente aus Beton für Gebäude
EP0521431A1 (de) * 1991-07-01 1993-01-07 ITALCASE PREFABBRICATI S.r.L. Abdeckvorrichtung für Gebäude, insbesondere für Industrie- und/oder Handelsgebäude
EP0727536A1 (de) * 1995-02-17 1996-08-21 DLC S.r.L. Dachbauweise aus alternierend Dachziegeln und Dachträger

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"Dokumentationsblätter. Untersuchungen über die Baukosten von Industrieflachbauten.", DEUTSCHE BAUZEITSCHRIFT, vol. 11, no. 2, February 1963 (1963-02-01), pages 226 - 240, XP002134984 *
RÜHLE, KÜHN, WEISBACH, ZEIDLER: "Räumliche Dachtragwerke. Konstruktion und Ausführung. Band 1", 1969, VEB VERLAG FÜR BAUWESEN, BERLIN, XP002134985, 700532 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBO20080655A1 (it) * 2008-10-27 2010-04-28 Borgioni Prefabbricati S R L Copertura per edifici di tipo industriale
EP4227472A1 (de) * 2022-02-10 2023-08-16 Paolo Borgioni Baustoffgruppe zur herstellung einer gebäudeabdeckung

Also Published As

Publication number Publication date
ITMI990085A1 (it) 2000-07-19
IT1306966B1 (it) 2001-10-11

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