IT9005231A1 - MIXED WOOD CONCRETE WITH MONOLITHICITY BETWEEN THE TWO MATERIALS OBTAINED THROUGH THE GRAFTING OF CONCRETE OR OTHER MATERIAL IN CAVITY OF GENERIC SHAPE PREPARED FOR THE EXTRADOSSO OF THE WOODEN BEAM - Google Patents
MIXED WOOD CONCRETE WITH MONOLITHICITY BETWEEN THE TWO MATERIALS OBTAINED THROUGH THE GRAFTING OF CONCRETE OR OTHER MATERIAL IN CAVITY OF GENERIC SHAPE PREPARED FOR THE EXTRADOSSO OF THE WOODEN BEAMInfo
- Publication number
- IT9005231A1 IT9005231A1 IT005231A IT523190A IT9005231A1 IT 9005231 A1 IT9005231 A1 IT 9005231A1 IT 005231 A IT005231 A IT 005231A IT 523190 A IT523190 A IT 523190A IT 9005231 A1 IT9005231 A1 IT 9005231A1
- Authority
- IT
- Italy
- Prior art keywords
- concrete
- connection
- joist
- slab
- concrete slab
- Prior art date
Links
- 239000000463 material Substances 0.000 title claims description 9
- 239000002023 wood Substances 0.000 title description 2
- 238000005266 casting Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000011084 recovery Methods 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000135 prohibitive effect Effects 0.000 description 1
Landscapes
- Rod-Shaped Construction Members (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Description
D E S C R I Z IO N E DESCRIPTION
annessa a domanda di brevetto per INVENZIONE INDUSTRIALE dal titolo: attached to a patent application for INDUSTRIAL INVENTION entitled:
"SOLAIO MISTO LEGNO-CALCESTRUZZO CON MONOLITICITA' TRA I DUE MATERIALI OTTENUTA TRAMITE L'INNESTO DEL CALCESTRUZZO 0 DI ALTRO MATERIALE IN CAVITA' DI FORMA GENERICA PREDISPOSTE ALL'ESTRADOSSO DELLA TRAVE IN LEGNO ". "MIXED WOOD-CONCRETE FLOOR WITH MONOLITHICITY BETWEEN THE TWO MATERIALS OBTAINED THROUGH THE GRAFTING OF CONCRETE OR OTHER MATERIALS IN CAVITY OF GENERIC SHAPE PREPARED FOR THE EXTRADOSO OF THE WOODEN BEAM".
R I A S S U N T O SUMMARY
Viene presentato e descritto un solaio misto legnocalcestruzzo cosi costituito: A mixed wood-concrete floor is presented and described as follows:
i) travetti in legno con larghezza , altezza ed interasse variabili secondo 1unghezza e sovraccarico, i) wooden joists with variable width, height and center distance according to length and overload,
2) assito o pannello posto all’estradosso dei travetti con spessore variabile. 2) plank or panel placed on the extrados of the joists with variable thickness.
3) soletta in calcestruzzo gettata in opera o prefabbr icata con spessore variabile ; detta soletta costituisce una sezione monolitica con i sottostanti travetti in legno in quanto il calcestruzzo va a riempire idonee cavita' predisposte all'estradosso del travetto impedendo lo scorrimento tra le due parti. 3) concrete slab cast on site or prefabricated with variable thickness; said slab constitutes a monolithic section with the underlying wooden joists as the concrete fills suitable cavities prepared on the extrados of the joist, preventing sliding between the two parts.
D E S C R I Z IO N E DESCRIPTION
La presente invenzione si riferisce ad un solaio misto legno calcestruzzo tra loro accoppiati in modo da ottenere una sezione monolitica che dal punto di vista statico e' riconducibile ad una sezione a "T"; infatti l'anima verticale e’ costituita dai travetti in legno mentre l’ala orizzontale e' costituita dalla soletta in calcestruzzo gettata in opera o prefabbr icata. The present invention refers to a mixed wood-concrete floor coupled together so as to obtain a monolithic section which from the static point of view is attributable to a "T" section; in fact, the vertical core is made up of wooden beams while the horizontal wing is made up of the concrete slab cast on site or prefabricated.
Fino ad oggi nel dimensionamento di solai costituiti da travi in legno e soletta in calcestruzzo si poteva procedere in due modi: Up to now, in the dimensioning of floors consisting of wooden beams and concrete slabs, it was possible to proceed in two ways:
11non si teneva conto della soletta in calcestruzzo. In questo caso tutte le azioni interne di progetto erano affidate al travetto in legno;si evitava in questo modo di creare la monoliticita* tra le due parti costituite da materiali diversi ma nello stesso tempo si dovevano impiegare travi con grosse sezioni trasversali. The concrete slab was not taken into account. In this case all the internal project actions were entrusted to the wooden joist; in this way it was avoided to create the monolithicity * between the two parts made up of different materials but at the same time beams with large cross sections had to be used.
Inoltre in questo modo il solaio nel tempo per effetto della viscosità’ del legno assumeva deformazioni molte volte innaccettabili (imbarcamento1. Furthermore, in this way the floor over time, due to the viscosity of the wood, assumed deformations that were often unacceptable (warping1.
2) si teneva conto della monoliticita’ della sezione costituita da parti con materiali diversi. 2) the monolithicity of the section made up of parts with different materials was taken into account.
In questo caso rispetto al caso 1) si avevano indubbiamente sezioni delle travi in legno minore ma a fronte di costosi collegamenti tra la trave e la soletta superiore in calcestruzzo ; infatti detti collegamenti erano realizzati attraverso l'innesto di pioli o tirafondi in acciaio nell'estradosso del travetto e da esso sporgenti qualche centimetro per poter realizzare l'ancoraggio con la soletta in calcestruzzo. In this case, compared to case 1), there were undoubtedly smaller sections of the wooden beams but in the face of expensive connections between the beam and the upper concrete slab; in fact, these connections were made through the insertion of steel rungs or log bolts into the extrados of the joist and protruding from it a few centimeters in order to be able to anchor it with the concrete slab.
Scopo della presente invenzione e' appunto quello di realizzare la monoliticità ' tra parte in legno e parte in calcestruzzo senza l'onere della messa in opera di parti in acciaio di collegamento. The purpose of the present invention is precisely that of achieving the monolithicity between the wooden part and the concrete part without the burden of installing connecting steel parts.
Per maggiore chiarezza si fara’ riferimento nella successiva descrizione al disegno allegato dove in figura 1 e' rappresentata una vista assonometrica del solo travetto,in figura 2 una sezione trasversale con rappresetati anche l'assito e la caldana di calcestruzzo,in figura 3 una sezione longitudinale lungo l'asse del travetto. For greater clarity, reference will be made in the following description to the attached drawing where in figure 1 there is an axonometric view of the joist only, in figure 2 a cross section with also represented the planking and the concrete slab, in figure 3 a section longitudinal along the axis of the joist.
Dalla figura 1 risulta evidente il travetto 1 con all’estradosso le cavita’ 4 rappresentate con una forma particolare,e’ chiaro che la forma di dette cavita' e' solo indicativa e non limitativa potendo queste assumere forma qualsiasi a secondo del tipo di utensile impiegato per la loro realizzazione. From figure 1 it is clear that the joist 1 with the extrados of the cavities 4 represented with a particular shape, it is clear that the shape of said cavities is only indicative and not limiting since they can assume any shape according to the type of tool used for their realization.
Dalla figura 2 risulta evidente l'assito 2 che potrebbe anche essere un pannello che oltre a sostenere il calcestruzzo durante la fase di getto resta in vista come soffitto. Dalla figura 2 e 3 risulta evidente la soletta in calcestruzzo 3 con la parte 5 che costituisce il collegamento atto ad assorbire lo scorrimento tra le due parti costituite da materiali diversi e che sostituisce ed anzi migliora il collegamento fino ad oggi ottenuto attraverso l'impiego di parti in acciaio come sopra già detto. From figure 2 it is evident the board 2 which could also be a panel which in addition to supporting the concrete during the casting phase remains visible as a ceiling. From figures 2 and 3 it is clear the concrete slab 3 with the part 5 which constitutes the connection able to absorb the sliding between the two parts made up of different materials and which replaces and even improves the connection obtained up to now through the use of steel parts as mentioned above.
Il vantaggio economico di detto sistema di collegamento risulta evidente;esso si presta ad una lavorazione di tipo industrializzato del travetto con l’impiego di macchina a fresa multipla per la realizzazione delle cavita’ 4 senza l’apporto di parti in acciaio. The economic advantage of this connection system is evident; it lends itself to industrialized processing of the joist with the use of a multiple milling machine for the creation of cavities 4 without the addition of steel parts.
La sezione resa monolitica presenta caratteristiche statiche notevolmente superiori a quelle del solo travetto consentendo l'impiego del solaio cosi’ realizzato anche su luci e con carichi proibitivi per un normale solaio in legno; risulta inoltre praticamente scongiurato il pericolo di deformazioni eccessive nel tempo grazie alla collaborazione fornita dalla soletta di calcestruzzo. The section made monolithic has static characteristics considerably higher than those of the joist alone, allowing the use of the floor thus made even on spans and with prohibitive loads for a normal wooden floor; furthermore, the danger of excessive deformations over time is practically avoided thanks to the collaboration provided by the concrete slab.
Si possono avere tre livelli di impiego a secondo della accessibilità’ del cantiere e/o delle richieste del committente; There can be three levels of use depending on the accessibility of the site and / or the client's requests;
1) posa in opera di ogni singolo travettol e successiva posa dell'assito2 e getto della caldana 3 eventualmente armata con rete elettrosaldata tondino d'acciaio; tutte le operazione sono quindi svolte sul cantiere d'impiego. 2) posa in opera di elemento prefabbricato in stabilimento costituito dall'assemblaggio di due o piu travetti tra loro collegati dall’assito 2; in cantiere d'impiego resta da fare solo il getto in opera della soletta 3 con notevole risparmio di tempo di posa in cantiere rispetto alla soluzione 1) 1) laying of each single joist and subsequent laying of the plank 2 and casting of the caldana 3 possibly reinforced with steel rod electro-welded mesh; all the operations are then carried out on the site of use. 2) installation of a prefabricated element in the factory consisting of the assembly of two or more joists connected to each other by the board 2; on site of use, only the on-site casting of the slab 3 remains to be done, with considerable savings in installation time on site compared to solution 1)
3) posa in opera di elemento prefabbricato come al punto 2 ma completo anche della soletta in calcestruzzo precedentemente gettata in stabi 1imento. 3) installation of the prefabricated element as in point 2 but also complete with the concrete slab previously cast in the factory.
Detto procedimento consente la realizzazione di solai in legno-calcestruzzo interamente prefabbricati riducendo i tempi di esecuzione a valori minimi. La presente invenzione raggiunge cosi gli scopi propost i. This procedure allows the construction of fully prefabricated wood-concrete floors, reducing execution times to minimum values. The present invention thus achieves the proposed objects.
Naturalmente alla presente invenzione possono essere apportate numerose modifiche e varianti ,tutte rientranti nell'ambito del concetto inventivo che le caratteri zza. Naturally numerous modifications and variations can be made to the present invention, all of which are within the scope of the inventive concept that characterizes.
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT00523190A IT1242842B (en) | 1990-11-14 | 1990-11-14 | Mixed timber-concrete floor slab of two-material monolithic nature obtained by coupling the concrete or other material in cavities with a generic form prepared on the intrados of the timber beam |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT00523190A IT1242842B (en) | 1990-11-14 | 1990-11-14 | Mixed timber-concrete floor slab of two-material monolithic nature obtained by coupling the concrete or other material in cavities with a generic form prepared on the intrados of the timber beam |
Publications (3)
Publication Number | Publication Date |
---|---|
IT9005231A0 IT9005231A0 (en) | 1990-11-14 |
IT9005231A1 true IT9005231A1 (en) | 1992-05-14 |
IT1242842B IT1242842B (en) | 1994-05-18 |
Family
ID=11119700
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT00523190A IT1242842B (en) | 1990-11-14 | 1990-11-14 | Mixed timber-concrete floor slab of two-material monolithic nature obtained by coupling the concrete or other material in cavities with a generic form prepared on the intrados of the timber beam |
Country Status (1)
Country | Link |
---|---|
IT (1) | IT1242842B (en) |
-
1990
- 1990-11-14 IT IT00523190A patent/IT1242842B/en active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
IT1242842B (en) | 1994-05-18 |
IT9005231A0 (en) | 1990-11-14 |
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