PL118210B2 - Ceiling made of pre-cast elements - Google Patents

Ceiling made of pre-cast elements Download PDF

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Publication number
PL118210B2
PL118210B2 PL21496379A PL21496379A PL118210B2 PL 118210 B2 PL118210 B2 PL 118210B2 PL 21496379 A PL21496379 A PL 21496379A PL 21496379 A PL21496379 A PL 21496379A PL 118210 B2 PL118210 B2 PL 118210B2
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PL
Poland
Prior art keywords
plates
reinforcement
reinforced
thin
prefabricated
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PL21496379A
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Polish (pl)
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PL214963A2 (en
Inventor
Kalikst Grabiec
Edmund Przybylowicz
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Politechnika Poznanska
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Priority to PL21496379A priority Critical patent/PL118210B2/en
Publication of PL214963A2 publication Critical patent/PL214963A2/xx
Publication of PL118210B2 publication Critical patent/PL118210B2/en

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Description

Przedmiotem wynalazku jest strop z elementów prefabrykowanych przeznaczony do róznego rodzaju obiektów budowlanych.Znane i stosowane sa rózne rozwiazania stropów z elementów prefabrykowanych, w których glówne elementy stanowia prefabrykowane elementy w postaci belek nosnych, plyt i pustaków.Belki nosne wykonywane sa najczesciej ze zbrojonego betonu i maja ksztalt odwróconej litery ..T".Pustaki stropowe formowane sa jako cienkoscienne element} z zuzlobetonu lub z tworzwa ceramicznego formowanego na mokro i wypalanego w piecu. Strop z tego rodzaju elementów jest wykonany w ten sposób, ze belki nosne ulozone sa w odstepach równych szerokosci pustaków, a pomiedzy tymi belkami ulozone sa pustaki. Wszystkie pachwiny pomiedzy pustakami i belkami nosnymi wypelnione sa betonem, a nastepnie caly strop jest zalany nadbetonem tworzacym cienka plyte wiazaca caly strop.Niedogodnosc przedstawionego rozwiazania stropu polega na koniecznosci stosowania deskowania i odpowiednich rusztowan podpierajacych.Znane sa takze stropy z elementów prefabrykowanych wedlug opisu patentowego PRL nr 44560 MKP E04B 5/02. W stropach tych pomiedzy belkami nosnymi o ksztalcie odwróconej litery ,.T" ulozone sa w dolnej czesci na ich pólkach cienkoscienne, prefabrykowane, ksztaltowe, kasetowe zbrojone plyty dolne.Podobnie w górnej czesci na grzbietach tych belek nosnych ulozone sa równiez cienkoscienne prefabryko¬ wane, ksztaltowe, zbrojone plyty górne, z ta róznica, ze sa one ulozone dnem do góry odwrotnie jak plyty dolne. Belki nosne maja wyprowadzone ponad grzbiety prety zbrojeniowe uformowane w strzemiona.Przestrzen pomiedzy kasetami wypelniona jest masa izolacyjna.Prefabarykowane stropy podobnie jak stropy z pustakami wykazuja w praktyce wade zwana klawiszo- waniem, wystepujaca szczególnie przy miejscowych obciazaniach stropu. Zjawisko to jest spowodowane brakiem wystarczajacej spójnosci pomiedzy elementami belkowymi i plytowymi. Wspólna niedogodnosc obu przedstawionych rozwiazan stropu stanowi mala rozpietosc stropu ograniczona do 6, a wyjatkowo do 7,5 m. Strop z elementów prefabrykowanych z belkami nosnymi o ksztalcie odwróconej litery ,.T*\ z których wyprowadzone sa ponad ich grzbiety prety zbrojeniowe uformowane w strzemiona, a pomiedzy belkami ulozone sa w dolnej czesci na ich pólkach, a w górnej czesci na ich grzbietach cienkoscienne prefabrykowane, ksztaltowe, zbrojone plyty górne i dolne, przy czym przestrzen miedzy tymi plytami wypelniona jest masa izoalcyjna, ma wedlug wynalazku górne plyty cienkoscienne z lekkiego betonu zbrojone o ksztalcie plaskich prostokatów. Prety zbrojenia belek nosnych uformowane w strzemiona, polaczone sa z górnym /brojeniem zalewy betonowej, które ulozone jest poprzecznie nad plytami górnymi.118 210 Strop / prefabrykowanych elementów wedlug wynalazku cechuje lekkosc konstrukcj a t\m samym mozliwosc siosowania wiekszych oó dotychczasowych rozpietosci.Przedmiot wedlug wynalazku jest pokazany w przykhd/ic wykonania na rysunku na którym w przekroju poprzecznym uwidoczniono konstrukcje, stropu i uklad elementów preiabrykow anych.Stropowe belki 1 o ksztalcie odwróconej litery MT" wsparte sa na scianach nosio :h obiektu nie pokazanych na rysunku korzystnie w odstepach 0,9 metra. Na pólkach 2 belek 1 w ich doln-. i./esci u lozone sa dolne plyt v 3. Plyn te wykonane sajak o cienkoscienne, zbrojone ksztaltowe elmicncty preta br\ko%- anc.Boczne krawedzie dolnych plyt 3 maja odradzenie dopasowane do pólek 2 belek I. W zwiazku z tym w obszarze tych odsadzen plyty sa pogrubione, przy czym pogrubienia te zmniejszaja sie stopniowo w kierunku do srodka plyt. W celu zwiekszenia sztywnosci poprzecznej stropu, pomiedzy nosnymi belkami I w korzyst¬ nych odstepach sa osadzone prefabrykowane zbrojone poprzeczne zebra 4. W górnej czysci Mropu. n.i grzbietach belek 1 ulozone sa plaskie, prostokatne, cienkoscienne prefabrykowane zbrojone plyty 5. Prze¬ strzen 6 pomiedzy dolnymi plytami 3 i górnymi plytami 5jest wypelniona w zaleznosci od wymagan izolacja termiczna lub akustyczna np. trocinami zmieszanymi z wapnem. Prety zbrojenia 7 belek 1 wyprowadzone *a ponad grzbietami belek i maja ksztalt strzemion 8. Strzemiona te polaczone sa z poprzecznym zbrojeniem 9 nadstropowej zalewy betonowej 10. Zalewa 10 jest wykonana z betonu na mokro i wiaze monolitycznie wszystkie elementy stropu prefabrykowanego. Dolne plyty 3, górne plyty 5 oraz poprzeczne zebra 4 wykonane sa z betonu glinoporytowego. Moga byc takze wykonane z betonu lupkoporytowego.Zastrzezenie patentowe Strop z elementów prefabrykowanych, w którym pomiedzy belkami nosnymi o ksztalcie odwróconej litery „T\ z wyprowadzonymi ponad ich grzbiety pretami zbrojenia uformowanymi w strzemiona, ulozone sa w dolnej czesci na ich pólkach i w górnej czesci na ich grzbietach cienkoscienne prefabrykowane, ksztaltowe, zbrojone plyty górne i dolne, a przestrzen pomiedzy tymi plytami wypelniona jest masa izola¬ cyjna, korzystnie trocinami zmieszanymi z wapnem, przy czym nad dolna plyta ulozone sa usztywniajace poprzeczne zebra, znamienny tym, ze górne plyty (5) cienkoscienne z lekkiego betonu sa zbrojone i maja ksztalt plaskich prostokatów, a prety zbrojenia belek nosnych uformowane w strzemiona sa polaczone z górnym zbrojeniem (9), zalewy betonowej (10), poprzecznie nad plytami górnymi. 9 8 10 S 6 4 Prac. Poligraf.UP PRL. Naklad 120 egz.Cena 100 zl \ PLThe subject of the invention is a ceiling made of prefabricated elements intended for various types of construction objects. Various solutions of ceilings made of prefabricated elements are known and used, in which the main elements are prefabricated elements in the form of beams, slabs and hollow bricks. The load-bearing beams are usually made of reinforced concrete and have the shape of an inverted letter ..T ". Ceiling hollow sections are formed as a thin-walled element} of reinforced concrete or of a wet-formed ceramic and kiln-fired. The ceiling of this type of elements is made in such a way that the beams are placed at equal intervals the width of the hollow bricks, and between these beams there are hollow bricks. All the groins between the hollow bricks and the traversing beams are filled with concrete, and then the entire ceiling is filled with concrete topping, forming a thin slab that binds the entire ceiling. There are also known ceilings made of prefabricated elements according to the PRL patent description No. 44560 MKP E04B 5/02. In these ceilings, between the traverses in the shape of an inverted letter "T" there are thin-walled prefabricated, shaped, cassette-shaped bottom plates on their shelves in the lower part. Similarly, thin-walled prefabricated, shaped, reinforced top plates, with the difference that they are arranged upside down in the opposite way to the bottom plates. The traverses have reinforcing bars led out above the crests formed into stirrups. The space between the cassettes is filled with insulating mass. Prefabricated ceilings, like the ceilings with hollow bricks in practice, the defect is called keying, occurring especially at local ceiling loads. This phenomenon is caused by the lack of sufficient cohesion between the beam and slab elements. A common inconvenience of both presented ceiling solutions is the small ceiling span limited to 6, and exceptionally to 7.5 m. Ceiling of prefabricated elements with n beams with inverted letter-shaped blocks, .T * \, from which the reinforcing bars, formed into stirrups, are led above their backs, and between the beams, in the lower part, on their shelves, and in the upper part, on their spines, thin-walled prefabricated, shaped, reinforced upper plates and The lower one, with the space between these plates filled with insulating mass, has, according to the invention, upper thin-walled slabs made of lightweight concrete reinforced with the shape of flat rectangles. The reinforcement bars of the traversing beams formed into stirrups are connected with the upper / reinforcement of the concrete filling, which is transversely located over the upper plates. 118 210 The ceiling / prefabricated elements according to the invention are characterized by a light structure and thus the possibility of using larger dimensions of the existing spans. is shown in the example of the implementation in the drawing where the cross-section shows the structure, the ceiling and the arrangement of the pre-diabetic elements. The ceiling beams 1 in the shape of the inverted letter MT "are supported on the walls of the object not shown in the drawing, preferably at intervals of 0, 9 meters. On the shelves of 2 beams 1 in their lower part there are bottom plates v 3. These fluid are made of thin-walled, reinforced shaped elmicncty bars brown \ ko% - anc. The side edges of the bottom plates are reborn suitable for the shelves of 2 beams I. Therefore, in the area of these shoulders, the panels are thickened, with the thickening gradually decreasing in direction towards the center of the discs. In order to increase the transverse stiffness of the ceiling, prefabricated reinforced transverse ribs 4 are embedded between the load-bearing beams I at preferred intervals. On the backs and crests of the beams 1 there are flat, rectangular, thin-walled prefabricated reinforced plates 5. The space 6 between the lower plates 3 and the upper plates 5 is filled according to the required thermal or acoustic insulation, e.g. with sawdust mixed with lime. Reinforcement bars 7 beams 1 led out * and above the crests of the beams and have the shape of stirrups 8. These stirrups are connected to the transverse reinforcement 9 of the overhead concrete filling 10. The floodplain 10 is made of wet concrete and monolithically binds all elements of the prefabricated floor. The lower plates 3, the upper plates 5 and the transverse ribs 4 are made of clay concrete. They can also be made of lupus concrete. Patent claim Ceiling made of prefabricated elements, in which between the traversing beams in the shape of an inverted letter "T \ with the reinforcement rods formed into stirrups protruding above their crests, are placed in the lower part on their shelves and in the upper part on their backs are precast thin-walled, shaped, reinforced upper and lower plates, and the space between these plates is filled with insulating mass, preferably sawdust mixed with lime, and above the lower plate there are transverse stiffening ribs, characterized by the fact that the upper plates (5 ) thin-walled lightweight concrete are reinforced and have the shape of flat rectangles, and the bars of the reinforcement of the traverses formed into stirrups are connected with the upper reinforcement (9), the concrete filling (10), transversely over the upper plates. 9 8 10 S 6 4 Work Poligraf.UP PRL. Mintage 120 copies Price PLN 100 \ PL

Claims (1)

1. Zastrzezenie patentowe Strop z elementów prefabrykowanych, w którym pomiedzy belkami nosnymi o ksztalcie odwróconej litery „T\ z wyprowadzonymi ponad ich grzbiety pretami zbrojenia uformowanymi w strzemiona, ulozone sa w dolnej czesci na ich pólkach i w górnej czesci na ich grzbietach cienkoscienne prefabrykowane, ksztaltowe, zbrojone plyty górne i dolne, a przestrzen pomiedzy tymi plytami wypelniona jest masa izola¬ cyjna, korzystnie trocinami zmieszanymi z wapnem, przy czym nad dolna plyta ulozone sa usztywniajace poprzeczne zebra, znamienny tym, ze górne plyty (5) cienkoscienne z lekkiego betonu sa zbrojone i maja ksztalt plaskich prostokatów, a prety zbrojenia belek nosnych uformowane w strzemiona sa polaczone z górnym zbrojeniem (9), zalewy betonowej (10), poprzecznie nad plytami górnymi. 9 8 10 S 6 4 Prac. Poligraf.UP PRL. Naklad 120 egz. Cena 100 zl \ PL1. Patent claim Ceiling made of prefabricated elements, in which between the traversing beams in the shape of an inverted letter "T \ with the reinforcement rods formed into stirrups protruding above their ridges, there are thin-walled prefabricated, shaped, shaped sections on their shelves in the lower part and on their upper ridges. reinforced upper and lower plates, and the space between these plates is filled with insulation mass, preferably sawdust mixed with lime, with transverse stiffening ribs above the lower plate, characterized in that the upper thin-walled lightweight concrete plates (5) are they are reinforced and have the shape of flat rectangles, and the bars of the reinforcement of the traverses formed into stirrups are connected with the upper reinforcement (9) of the concrete filling (10) transversely over the upper plates. 9 8 10 S 6 4 Work Poligraf.UP PRL. Mintage 120 copies. Price PLN 100
PL21496379A 1979-04-17 1979-04-17 Ceiling made of pre-cast elements PL118210B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL21496379A PL118210B2 (en) 1979-04-17 1979-04-17 Ceiling made of pre-cast elements

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Application Number Priority Date Filing Date Title
PL21496379A PL118210B2 (en) 1979-04-17 1979-04-17 Ceiling made of pre-cast elements

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PL214963A2 PL214963A2 (en) 1980-03-24
PL118210B2 true PL118210B2 (en) 1981-09-30

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