EP0023042B1 - Elément de plancher préfabriqué pour planchers de bâtiments - Google Patents
Elément de plancher préfabriqué pour planchers de bâtiments Download PDFInfo
- Publication number
- EP0023042B1 EP0023042B1 EP80104252A EP80104252A EP0023042B1 EP 0023042 B1 EP0023042 B1 EP 0023042B1 EP 80104252 A EP80104252 A EP 80104252A EP 80104252 A EP80104252 A EP 80104252A EP 0023042 B1 EP0023042 B1 EP 0023042B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ceiling
- concrete
- steel girder
- web
- ceiling panel
- 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.)
- Expired
Links
Images
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
- E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
- E04B5/10—Load-carrying floor structures formed substantially of prefabricated units with metal beams or girders, e.g. with steel lattice girders
-
- 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
- E04B7/20—Roofs consisting of self-supporting slabs, e.g. able to be loaded
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/44—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the purpose
- E04C2/52—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the purpose with special adaptations for auxiliary purposes, e.g. serving for locating conduits
- E04C2/521—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the purpose with special adaptations for auxiliary purposes, e.g. serving for locating conduits serving for locating conduits; for ventilating, heating or cooling
Definitions
- the invention relates to a prefabricated ceiling element for building ceilings according to the preamble of claim 1.
- the steel beams are intended to absorb the tensile forces which are caused by the bending stress of the concrete ceiling slab; furthermore, they should transmit transverse forces to the support. They therefore extend over the entire length of the ceiling element, ie they go through to the support, in other words almost to the narrow side of the concrete ceiling slab (GB-A No. 586394, 925236; US-A No. 4115971; " Merkblatt 115" der Advice center for steel use, Düsseldorf, p. 15; DIN 1045).
- a prefabricated ceiling element for building ceilings which consists of a concrete ceiling tile and a reinforced concrete beam running in the longitudinal direction of the ceiling element (FR-A No. 2242533).
- the ends of the concrete ceiling slab are thickened relative to the central part.
- the bottom edge of the reinforced concrete beam which runs obliquely upwards at the end, opens into the underside of the concrete ceiling slab at a distance from the narrow side.
- the reinforcement of the concrete girder like the ceiling elements mentioned at the beginning, essentially goes through to the support. Due to the thickening of the concrete ceiling slab, installation routes remain free on the narrow sides, so that installation lines can be laid essentially freely from below.
- the object of the invention is therefore to provide a prefabricated ceiling element for building ceilings of the type mentioned, i.e. with a steel girder, to be made available, in which installation lines can be laid freely from below, the construction height does not limit the diameter of installation lines and the material expenditure for production is kept to a minimum.
- a ceiling element according to the invention is placed in each case at the end free of the steel beam on a support, for example the top of a load-bearing wall. Due to the distance of the end of the steel girder from the narrow side, a free space remains between the inside of the support and the adjacent end of the steel girder running in the longitudinal direction of the ceiling element, so that an installation street running transversely to the longitudinal direction of the ceiling elements and the associated steel girder is created at this point. Installation routes also remain free between the longitudinal steel beams. These installation routes are freely accessible from below when the ceiling is installed, so that any installation lines can be easily installed.
- the construction height of the ceiling can be selected to a minimum without limiting the permissible diameter of the installation lines to be laid, as can the material expenditure, since the ceiling essentially only consists of the relatively thin concrete ceiling slab and the support provided with many recesses.
- the steel girder had the shape of a lattice girder in a known ceiling element (GB-A No. 925236); instead, the forms characterized in claims 2 and 3, which are also known per se, are currently preferred (US-A No. 4115971).
- the ceiling elements according to the invention are prefabricated, it is generally not possible to use steel beams which are specifically matched to the desired length of the ceiling elements, i.e. those in which the distances between the steel girder web tips are dimensioned such that a tip can be anchored in the concrete ceiling tile at the desired distance from the narrow sides of the concrete ceiling tile.
- a tension element the free end of which is anchored in the concrete ceiling plate, is fastened to the ends of the steel beam in each case at an acute angle to the concrete ceiling plate.
- this construction is modified in accordance with the characterizing features of claim 6, the special configurations of which are characterized in claims 7 and 8.
- a reinforced concrete ceiling is shown from three ceiling elements, each consisting of a reinforced concrete ceiling slab 1 and two steel beams 2 arranged on the underside of the ceiling slab 1.
- Each of these steel beams 2 consists of a web plate 2a, which is cut straight on its side shown in FIG. 1 below and zigzag-shaped on its side shown in FIG. 1 in such a way that tips such as 2c are formed, between which recesses such as 2d are located.
- Such a cut can be made in such a way that two web plates, such as 2a, are created from a sheet metal strip of the desired width or a corresponding flat steel, which are identical to one another.
- a flange 2b is welded onto the straight side of the web plate 2a, the two ends 2e of which protrude beyond the web plate 2a and lead to it at 45 ° to the level of the ceiling plate 1 and are anchored there.
- the anchoring takes place by means of two round steels, one of which is shown at 2f, and which are welded to both the free ends of the flange parts 2e and to each of the tips 2c.
- the distance of the free ends of the flange parts 2e from the narrow sides of the concrete ceiling slab 1 is evidently greater than the construction height of the ceiling element itself, i.e. the sum of the thickness of the ceiling plate 1 and the free height of the steel beam 2.
- the upper limit for this distance is given by the bending capacity of the ceiling plate 1.
- the ceiling panels 1 are placed on supports 3 in the vicinity of their narrow sides, in the exemplary embodiment shown the upper edges of two load-bearing walls.
- the attachment there is carried out in the usual way.
- a ceiling opening 6 can be connected to a vertical installation line 8 by a line 7 which, as can best be seen in FIG. 1, can have an arbitrarily large diameter without changing the construction height of the ceiling.
- the line 7, as also shown in FIG. 2 can run between the steel beams 2 through an installation line 5 which remains free between the steel beams 2.
- Weaker installation lines can be carried out in a manner not shown through the recesses between the tips 2c of the steel girders 2, which under certain circumstances can shorten the line routing.
- the ceiling element according to the invention behaves in the central area like a composite beam, i.e. the concrete ceiling slab 1 absorbs compressive forces as the upper chord, while the steel beam 2 absorbs tensile forces as well as shear forces between the tensile and compression chords.
- all forces are absorbed only by the concrete ceiling slab or its reinforcement and then introduced into the flange 2b of the steel beam 2 at a distance from the supports 3 via the flange ends 2e.
- the procedure is such that after the flange 2b is welded to the web plate 2a, the two round steels 2f to the Flange ends 2e and the web tips 2c are welded on.
- a slab formwork is then prepared insofar as the longitudinal reinforcement is inserted and the transverse reinforcement in the later upper part of the slab 1, then the beam 2 is used in the manner shown, such that the tips 2c penetrate up to half the depth of the formwork.
- the transverse reinforcements in the lower part of the slab are then pushed through the recesses between the tips 2c and then the formwork is poured with concrete in the usual way.
- a ceiling plate 1 ' is also provided as well as a steel beam 2', which, however, in this embodiment is half of a double-T beam, the web of which is cut open in a zigzag shape, so that again Peaks such as 2c 'arise between which recesses remain open.
- two T-profiles 9 are welded, which run approximately at 45 ° to the ceiling plate 1'.
- headed studs 10 are welded on.
- the production of the actual ceiling element is carried out analogously to the production in the embodiment according to FIGS. 1 and 2, but in this embodiment all reinforcing bars for the ceiling slab 1 ', which are indicated in FIGS. 4 and 5 at 11, can be used in the Ceiling slab formwork are inserted before the girder with its tips 2c 'and the stud bolts 10 welded to them are inserted into the formwork, since the stud bolts 10 easily fit between the transverse reinforcing bars, as can best be seen in FIG. 4.
- the steel beam 2 "consists of a T-profile 12 and a round steel 13 welded onto the upper edge of its web, which, as shown, is bent in a zigzag shape; apart from that, the structure is the same as for the steel beam 2 'of the embodiment according to FIG. 3 to 5.
- web plates 14 are provided in this embodiment, which are welded to the T-profile 12, but can also be welded to the round steel 13, and their The side facing away from the steel beam 2 "extends at approximately 45 ° to the ceiling plate 1". These web plates 14 are anchored in the ceiling plate 1 in the same way as in the embodiment according to FIGS. 3 to 5.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Rod-Shaped Construction Members (AREA)
- Building Environments (AREA)
- Panels For Use In Building Construction (AREA)
- Joining Of Building Structures In Genera (AREA)
- Finishing Walls (AREA)
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT80104252T ATE3454T1 (de) | 1979-07-20 | 1980-07-18 | Vorgefertigtes deckenelement fuer gebaeudedecken. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19792929350 DE2929350A1 (de) | 1979-07-20 | 1979-07-20 | Verbundtraeger fuer gebaeudedecken |
DE2929350 | 1979-07-20 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0023042A1 EP0023042A1 (fr) | 1981-01-28 |
EP0023042B1 true EP0023042B1 (fr) | 1983-05-18 |
Family
ID=6076224
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP80104252A Expired EP0023042B1 (fr) | 1979-07-20 | 1980-07-18 | Elément de plancher préfabriqué pour planchers de bâtiments |
Country Status (5)
Country | Link |
---|---|
US (1) | US4586307A (fr) |
EP (1) | EP0023042B1 (fr) |
AT (1) | ATE3454T1 (fr) |
DE (2) | DE2929350A1 (fr) |
WO (1) | WO1981000272A1 (fr) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE436213B (sv) * | 1981-02-20 | 1984-11-19 | Per Hofman | Balkformat byggelement |
DE8203302U1 (de) * | 1982-02-08 | 1982-06-24 | Brendel, Irnfried, Dipl.-Ing., 7847 Badenweiler | Einlage fuer stahlverbundtraeger |
DE3204590C2 (de) * | 1982-02-10 | 1984-12-20 | Idsteiner Stahl- und Verbundträgerbau GmbH, 6270 Idstein | Verbundträger |
DE8429708U1 (de) * | 1984-07-18 | 1985-02-07 | Kurt Hirsch Kunststoffwerk Gesellschaft mbH, Glanegg | Montageplatte fuer fussbodenheizungen |
GB2226058B (en) * | 1988-12-14 | 1992-12-02 | Kenneth John Pryce | Improvements relating to building construction |
DE29615361U1 (de) * | 1996-09-04 | 1996-11-14 | Maack, Peter, Dr.-Ing., 21376 Salzhausen | Decke für Gebäude |
US5884442A (en) * | 1997-03-28 | 1999-03-23 | Structural Systems Ltd. | Composite joist and concrete panel assembly |
NL1023875C2 (nl) * | 2003-07-10 | 2005-01-11 | Aslo Twenty Five B V | Prefab vloerdeel met uitwendige wapening en een werkwijze voor het vervaardigen van een dergelijk prefab-vloerdeel. |
US9957713B2 (en) * | 2011-05-11 | 2018-05-01 | Composite Technologies Corporation | Load transfer device |
US9273458B2 (en) * | 2011-08-18 | 2016-03-01 | King Solomon Creative Enterprises Corp. | Wide span static structure |
AT517824B1 (de) * | 2015-09-21 | 2017-10-15 | Franz Oberndorfer Gmbh & Co Kg | Platte, insbesondere Boden- bzw. Deckenplatte für ein Bauwerk |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA619536A (en) * | 1961-05-02 | Gerald V. Roney, Jr. | Structural building units | |
CA648462A (en) * | 1962-09-11 | Gerald V. Roney, Jr. | Structural building units | |
US1725501A (en) * | 1927-11-22 | 1929-08-20 | Roy V Yeager | Structural building joist |
US1804132A (en) * | 1928-09-17 | 1931-05-05 | Edward H Tashjian | Construction unit |
US1974730A (en) | 1931-09-17 | 1934-09-25 | Zollinger Fritz | Steel girder for concrete structures |
US2055701A (en) * | 1934-05-24 | 1936-09-29 | Palmer Robert Kendrick | Steel joist for concrete floors |
GB498281A (en) * | 1937-08-27 | 1939-01-04 | Geoffrey Murray Boyd | Improvements in built-up structural members |
US2558946A (en) * | 1943-11-19 | 1951-07-03 | Fromson Bertram William | Reinforced cast structure |
GB586394A (en) * | 1944-09-11 | 1947-03-18 | George Kilner | Reinforced concrete construction |
US2636377A (en) * | 1945-11-07 | 1953-04-28 | Hilpert Meier George | Reinforced concrete beam |
AT190260B (de) | 1955-09-03 | 1957-06-25 | Ebenseer Betonwerke Gmbh | Tragwerk, insbesondere Träger, Säule, Armierung für Gußmassen od. dgl. |
US2987855A (en) * | 1958-07-18 | 1961-06-13 | Gregory Ind Inc | Composite tall-beam |
GB937440A (en) * | 1960-04-07 | 1963-09-18 | United Steel Companies Ltd | Improvements relating to metal members for use in composite structural parts of concrete and metal |
GB925236A (en) * | 1960-08-05 | 1963-05-01 | Gerald Vanluven Roney Jr | Structural building units |
US3094813A (en) * | 1961-04-07 | 1963-06-25 | Van Rensselaer P Saxe | Bar joist |
GB1117111A (en) * | 1963-12-16 | 1968-06-12 | Christiani And Nielsen Ltd | Improvements in or relating to composite steel and concrete structures |
FR2242533A1 (en) * | 1973-08-31 | 1975-03-28 | Sechoy Raymond | Precast post-tensioned concrete floor units - are supported by beams and have T-shaped cross sections |
GB1540575A (en) | 1976-06-25 | 1979-02-14 | Hereford Woodwool Ltd | Structural element |
LU77749A1 (de) * | 1977-07-12 | 1979-03-26 | Arbed | Verbundtraeger |
US4115971A (en) | 1977-08-12 | 1978-09-26 | Varga I Steven | Sawtooth composite girder |
-
1979
- 1979-07-20 DE DE19792929350 patent/DE2929350A1/de not_active Withdrawn
-
1980
- 1980-07-18 AT AT80104252T patent/ATE3454T1/de not_active IP Right Cessation
- 1980-07-18 EP EP80104252A patent/EP0023042B1/fr not_active Expired
- 1980-07-18 US US06/253,505 patent/US4586307A/en not_active Expired - Fee Related
- 1980-07-18 DE DE8080104252T patent/DE3063320D1/de not_active Expired
- 1980-07-18 WO PCT/DE1980/000104 patent/WO1981000272A1/fr unknown
Also Published As
Publication number | Publication date |
---|---|
EP0023042A1 (fr) | 1981-01-28 |
DE2929350A1 (de) | 1981-02-12 |
WO1981000272A1 (fr) | 1981-02-05 |
ATE3454T1 (de) | 1983-06-15 |
US4586307A (en) | 1986-05-06 |
DE3063320D1 (en) | 1983-07-07 |
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