EP1067249A2 - Dalle monolithique en béton armé coulée sur place et son procédé de fabrication - Google Patents

Dalle monolithique en béton armé coulée sur place et son procédé de fabrication Download PDF

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Publication number
EP1067249A2
EP1067249A2 EP00202226A EP00202226A EP1067249A2 EP 1067249 A2 EP1067249 A2 EP 1067249A2 EP 00202226 A EP00202226 A EP 00202226A EP 00202226 A EP00202226 A EP 00202226A EP 1067249 A2 EP1067249 A2 EP 1067249A2
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EP
European Patent Office
Prior art keywords
slab
extrados
beams
ceiling
cast
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Withdrawn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
EP00202226A
Other languages
German (de)
English (en)
Other versions
EP1067249A3 (fr
Inventor
Corrado Cavani
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
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 Individual filed Critical Individual
Publication of EP1067249A2 publication Critical patent/EP1067249A2/fr
Publication of EP1067249A3 publication Critical patent/EP1067249A3/fr
Withdrawn legal-status Critical Current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
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
    • 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
    • E04B7/02—Roofs; Roof construction with regard to insulation with plane sloping surfaces, e.g. saddle roofs

Definitions

  • the present invention concerns a laid monolithic ceiling out of cement reinforced concrete and the relative process for realizing the same.
  • the present invention concerns a ceiling particularly suitable for the realization of structures for plane or not plane covers, out of conventional reinforced concrete and postcompressed reinforced concrete, for building works in civil, military and industrial fields.
  • the aims set forth are reached by means of the object of the present invention which consists of a laid monolithic ceiling out of cement reinforced concrete, characterized in that it comprises extrados beams which cooperate as a monolyth with a slab laid during realization.
  • Extrados beams are beams with any shape and section, placed at suitable distances according to the structural calculations, and realized out of materials fit for resisting to load actions; they are made monolithis with the slab by means of a cement cast and at least one portion of the square section is projecting with respect to the extrados of said slab.
  • the extrados beams may be out of cement reinforced concrete with a slow or postcompressed reinforcing; with reticular iron beams or with other materials that may solidarize with the cover slab by means of a cement cast.
  • the realization process for obtaining the laid monolithic ceiling out of cement reinforced concrete, comprising a slab and extrados beams is characterized in that it comprises the following phases:
  • the realization phase of the slab consists in a first cement cast inglobing the lower reinforcing iron, the laying of the perforated blocks out of polystyrene and of the upper reinforcing iron, the completing cement cast of the slab up to the extrados.
  • the full ceilings as well as the lightened ones are furthe protected with a waterproofing coating of known kind.
  • the finished structure is a monolithic one and is completely realized in loco ; thus, all problems linked to a special transport and to particular lifting systems requested for prefabricated elements are eliminated, and a greater safety in the building yards is obtained.
  • This has been made possible, once the formworks have been laid, by the new working process, with the final result that extrados beams and slab are completely integrated into one single structural section, i.e. a monolithic section, completely realized in loco .
  • This result improves the times and the realization safety of the works, thus allowing to obtain a finished product with undiscussed better features that resists to possible natural catastrophies and of other kind, seismic movements, great showfalls, fire.
  • the fire resistance of the structures according to the present invention is highly improved: according to the needs, the structural stability may last two hours or even longer, against the 20-30 minutes of the precompressed reinforced concrete or steel structures, which undergo greater structural damage with the risk of an immediate collapse of said structures.
  • the new building process allows a reduced time for preparing the formwork structures in the building yard, thus improving the productivity or the work, and therefore reduced costs. It favours a more careful analysis of the project and of the realization drawings of the structures, creating maximum safety conditions for the workers in the building yard.
  • the new working process may be used for building any kind of conventional plane structures out of reinforced concrete, concerning the building production of industrial sheds, civil buildings, public works, military works, however with a special reference to the improvement of the building process by simplifying the mounting of the supporting bracing of the work in loco and the course of the building process.
  • said slab 1 has an advantageously full section, comprising reinforcing irons or nets 3 englobed in a monolithic cement cast 4.
  • the insulation material of the ceiling is placed above the full section slab.
  • polystyrene blocks 5 are advantageously provided in said slab 1, between the upper and lower iron reiforcing.
  • the extrados beams 2 comprise a portion of their section inserted inside said slab 1 and a portion projecting above the extrados of said slab.
  • said beams are realized with cement concrete and reinforcing irons 6.
  • the reinforcing irons may be of the conventional kind (slow) or postcompressed.
  • said beams are realized out of iron, with a full or reticular section, possibly protected with anticorrosive surface treatments.
  • the extrados beams 2 are resting onto at least two rows of pillars 7, which determine the span of the ceiling. Said pillars 7 are advantageously realized out of reinforced concrete.
  • eaves 8 are advantageously provided.
  • Such eaves may be jutting up or not with respect to the row of pillars 7 and is limited by a containing wall 9. Furthermore, said eaves comprise holes 10 conected to discharge down pipes 11. The wall 9 is provided with overflow holes 12 for discharging the water not discharged by the downpipes 11 due to possible obstructions caused by leaves or dirt accumulated inside the eaves, and that will prevent with absolute certainty the water from penetrating the building.
  • the first phase provides the building of rows of carrying pillars 7 out of reinforced concrete onto plinths 15 or beams or foundation slabs.
  • Such formwork may be advantageously realized with reusable formworks 13 and props 14, easily available on the market. Now the conventional reinforcing with a metal net and reinforcing iron rods 6 of said slab 1 and of said extrados beams 2 is placed.
  • the extrados of said slab may be advantageously shaped with an inclined surface that favours the running of the water towards eaves 8.
  • the finishing cast of the portions of the extrados beams external to the slab and to the eaves wall is performed.
  • the realization process of the same initially provides the realization of a first cement cast englobing the lower reinforcing iron, then the laying of perforated blocks (shaped blocks) out of polystyrene (or other equivalent material) and of the upper reinforcing iron, and finally the completing cement cast of the slab up to the extrados.
  • openings may be made in the slab for realizing windows and skylights, as requested by higienic laws.
  • the project of the carrying structure of formwork and props for the slab and the extrados beams must be worked out.
  • This project is necessary for improving the future safety of the building yard and for reducing the time for assembling the panels for formworks and props and therefore also improving productivity and reducing the assembling cost, which is a contributing factor for the final cost of the work.
  • the pillars will have an indicative pitch comprised between a minimum of 3 meters and a maximum of 15 meters, and for a span of the ceiling in the other direction, between a minimum of 5 meters to a maximum of 40 meters.
  • the next phase - once the pillars have been freed from the formwork - is the realization of the carrying formwork structure 13 and of the props 14 for supporting the full or lightened slab which, due to building needs, is housed inside the polystyrene blocks 5.
  • the renforcing 6 is laid and then the cast in one single solution.
  • the lower reinforcing is laid and a first cast of 5 cm is made. Then the polystyrene blocks are laid, with a height variable according to the work to be performed. After this phase, the upper net may be placed on the polystyrene and the reinforced concrete cast may be made up to 2.5 cm above the iron, for assuring the thickness for hiding the iron.
  • the reinforcing for the future realization of the extrados beams may be prepared, which will remain linked to the reinforcing of the full or lightened slab.
  • the third cement reinforced concrete cast is made for completing the portions projecting beyond the extrados of the slab of the extrados beams, thus reaching the aim of the present invention, to realize a monolithic reinforced concrete structure.
  • the last phase to be performed in the building yard is the process of removing the formworks, i.e. removing all formwork panels and all props of the lightened slab of full celing as well as of the extrados beams.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)
EP00202226A 1999-07-07 2000-06-26 Dalle monolithique en béton armé coulée sur place et son procédé de fabrication Withdrawn EP1067249A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITCR990007 1999-07-07
IT1999CR000007A ITCR990007A1 (it) 1999-07-07 1999-07-07 Solaio di copertura monolitico in calcestruzzo di cemento armato gettato in opera e relativo procedimneto di costruzione

Publications (2)

Publication Number Publication Date
EP1067249A2 true EP1067249A2 (fr) 2001-01-10
EP1067249A3 EP1067249A3 (fr) 2001-06-06

Family

ID=11348189

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00202226A Withdrawn EP1067249A3 (fr) 1999-07-07 2000-06-26 Dalle monolithique en béton armé coulée sur place et son procédé de fabrication

Country Status (2)

Country Link
EP (1) EP1067249A3 (fr)
IT (1) ITCR990007A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2598607A (en) * 1944-07-07 1952-05-27 Rumble Roy William Molded roof structure and its production
FR1217157A (fr) * 1958-11-29 1960-05-02 Toitures-terrasses démontables, en éléments préfabriqués
US3093932A (en) * 1960-04-22 1963-06-18 Dreier Sidney Floor construction and method of providing same
US3837131A (en) * 1972-08-14 1974-09-24 A Bisschops Cast concrete construction
EP0369914A1 (fr) * 1988-11-16 1990-05-23 Centre D'etudes Techniques De L'equipement De L'est Procédé de solidarisation d'une masse de matière à un support fonctionnel et dispositifs ainsi obtenus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2598607A (en) * 1944-07-07 1952-05-27 Rumble Roy William Molded roof structure and its production
FR1217157A (fr) * 1958-11-29 1960-05-02 Toitures-terrasses démontables, en éléments préfabriqués
US3093932A (en) * 1960-04-22 1963-06-18 Dreier Sidney Floor construction and method of providing same
US3837131A (en) * 1972-08-14 1974-09-24 A Bisschops Cast concrete construction
EP0369914A1 (fr) * 1988-11-16 1990-05-23 Centre D'etudes Techniques De L'equipement De L'est Procédé de solidarisation d'une masse de matière à un support fonctionnel et dispositifs ainsi obtenus

Also Published As

Publication number Publication date
EP1067249A3 (fr) 2001-06-06
ITCR990007A1 (it) 2001-01-07
ITCR990007A0 (it) 1999-07-07

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