EP1070800A1 - Durchstanzbewehrung für Flachdecken - Google Patents
Durchstanzbewehrung für Flachdecken Download PDFInfo
- Publication number
- EP1070800A1 EP1070800A1 EP00114308A EP00114308A EP1070800A1 EP 1070800 A1 EP1070800 A1 EP 1070800A1 EP 00114308 A EP00114308 A EP 00114308A EP 00114308 A EP00114308 A EP 00114308A EP 1070800 A1 EP1070800 A1 EP 1070800A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- belt
- shear reinforcement
- punching shear
- bends
- bend
- 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.)
- Granted
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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
- E04B5/43—Floor structures of extraordinary design; Features relating to the elastic stability; Floor structures specially designed for resting on columns only, e.g. mushroom floors
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
- E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
- E04C5/0645—Shear reinforcements, e.g. shearheads for floor slabs
Definitions
- the invention relates to a punching shear reinforcement for flat slabs according to the preamble of claim 1.
- Lattice girders are used in a punching shear reinforcement known from DE-U 299 93 114 provided with diagonal braces in which the bends of the diagonal braces close exactly with the straps.
- double-head cross bolts firmly attached to the belts at an angle, e.g. welded or bridled.
- DE-A 34 10 419 describes a plate which is loaded in punctiform fashion as a punching shear reinforcement provided shear reinforcement element known that the shape of one in several Coils of spirally curved lattice girders made of an upper chord, a lower chord and has a diagonal brace connecting the straps.
- the turns are radiating at least on a surface defined by the belts diverging rods are positively connected and relative to each other fixed.
- the bends of the diagonal strut snake can be made using the associated one Extend the belt and be connected to it in two welding nodes. On the Assignment of adjacent reinforcement layers is not dealt with in detail.
- EP 0 414 485 A EP 0 465 776 A, WO89 / 00226A, WO93 / 15287A, DE 24 58 081 A and DE 12 69 324 B.
- the invention has for its object a punching shear reinforcement of the latter kind of creating one while maintaining the benefit of easy installation provides sufficient load increase against punching failure.
- the bends of the diagonal strut snakes protruding from the associated belt ensure the greatest possible static useful height of the lattice girder and unproblematic installation of the reinforcement layers required in this area, especially the slab longitudinal reinforcement.
- the associated belt largely becomes the one for the one to be installed there, so to speak Reinforcement layer required height space used to the static
- Reinforcement layer required height space used to the static
- the load-bearing behavior of the punching shear reinforcement largely depends on the rigidity of the anchoring elements. Anchoring slip as low as possible is worth striving for. This requirement is combined by two measures Fulfills.
- Reinforcing layer bars running in the belt direction should be next to the belt Cross bars may be arranged.
- the vertical static usable height of the lattice girder is determined by the protruding ones Bends increased by an amount equal to the amount in it Area of existing reinforcement layer.
- the aim is to protrude the bend according to the height of the reinforcement layer.
- Overhangs an improved anchoring.
- each protruding bend from two arches and to produce an intermediate, approximately straight section. Then they are Welding areas with the belts spaced far apart in the belt direction, and offer the bends have large areas for interlocking with the concrete.
- the protruding bends in the lattice girder above and / or can be provided below the vertical static useful height up to about 110 to 140% of the given high distance between the upper and lower chords increased.
- a punching shear reinforcement F is provided for the area where there is a risk of punching.
- the Flat ceiling D can be a so-called element ceiling (as shown) or trade an in-situ concrete slab (not shown).
- Punching shear reinforcement F is not only necessary with point support from below, but also if necessary an upright column or in the connection area of a vertical lower / upper one Wall or in a corner area.
- the construction joints 3 are filled with in-situ concrete 7 (FIG. 2).
- At least one element with a reinforcement layer B is provided on the underside as a prefabricated concrete layer 6.
- At least one lower reinforcement layer B U is placed on the concrete layers 6 and is formed, for example, from transverse and longitudinal bars 1, 2.
- a plurality of lattice girders T are placed at intervals between the column S. As shown, the lattice girders T can run axially parallel or approximately radially (star-shaped) to the support point (not shown).
- the lattice girders T can be left free in the area of the column S if the connection of the column S engages in the flat ceiling D from below (not shown).
- Each lattice girder consists, for example, of two lower chords U 1 , U 2 , an upper chord O and two diagonal strut snakes A, which are welded to the chords and have upper and lower bends C O and C U.
- An upper reinforcement layer B O is placed on the lattice girder T (bending reinforcement), which is formed, for example, from longitudinal and transverse bars 4, 5 or is a reinforcement mat.
- the upper reinforcement layer B O can be fixed in the usual way on the lattice girders.
- the upper bends C O of the diagonal strut snakes A protrude above the upper flange O, with a height h1 corresponding to that Height of the upper reinforcement layer B O.
- the cross bars 5 are placed on the top chords O and optionally fixed with binding wire 18 or also tack welds (not shown), while the longitudinal bars 4 are arranged on the cross bars 5.
- the upper contours of the protruding bends C O terminate, for example, approximately with the plane of the longitudinal bars 4 of the upper reinforcement layer B O.
- the protrusion of the bends C O over the upper flange O does not have to correspond to the total height h1. Even with a small overhang, the anchoring in the concrete would be noticeably improved and the anchoring slip would be significantly reduced. The supernatant could also be higher than shown.
- the static useful height H of the lattice girders is approximately 200 to 220 mm at a distance X of approximately 180 mm between the belts.
- the height of the lower reinforcement B U is indicated by h2 and can correspond to the height h1.
- the lower chords U 1 , U 2 can rest on the cross bars of the lower reinforcement B U.
- Each lower bend C U is welded to a lower flange U 1 , U 2 in at least one area 17, while each upper bend C O projecting above the upper flange O is welded to the upper flange O in two regions 16 spaced apart in the belt direction.
- the upper bends C O are welded to the upper chord O in each area 17 without any significant overhang, while the lower bends C U project downward over the lower chords U 1 and U 2 by the height h2 and in each case two areas 16 are welded to it.
- the projection of the lower bends C U corresponds approximately to the height h2 of the lower reinforcement layer B U.
- the static support height H of the lattice girder T is increased downwards here.
- Each bend C O , C U can either be formed with an approximately uniform bend profile 12, or (as shown alternatively in FIG. 5) with two bends 13, 14 spaced in the belt direction and an essentially straight region in between. In the latter case, the distance between the welding areas 16 seen in the belt direction can be increased and the surface of the bend below (or above) the anchoring belt which can be used for anchoring to the concrete can also be increased. It would be conceivable to let only the bends of a diagonal strut snake A survive.
- the protrusion should increase the static support height H beyond the associated belt the diagonal strut snake expediently the height of this reinforcement layer correspond to achieve the optimal support height H. This could also be the case be the case if spacer elements between the longitudinal and transverse bars of the reinforcement layer should be set.
Abstract
Description
- Fig. 1
- eine schematische Draufsicht auf einen Teil einer Flachdecke, in der bei einer Punktabstützung eine Durchstanzbewehrung vorbereitet ist,
- Fig. 2
- einen Schnitt in der Ebene II-II in Fig. 1,
- Fig. 3
- eine erste Ausführungsform einer Durchstanzbewehrung in einer Seitenansicht und einem Querschnitt,
- Fig. 4
- eine zweite Ausführungsform einer Durchstanzbewehrung in einer Seitenansicht und einem Querschnitt, und
- Fig. 5
- eine weitere Ausführungsform einer Durchstanzbewehrung in einer Seitenansicht und einem Querschnitt.
Claims (9)
- Durchstanzbewehrung für Flachdecken (D), insbesondere punktgestützte Element- oder Ortbetondecken, mit mehreren Gitterträgern (T), die angrenzend an mindestens eine Bewehrungslage (BU, BO) angeordnet sind, wobei jeder Gitterträger (T) mindestens zwei beabstandete Untergurte (U1, U2), wenigstens einen Obergurt (O) sowie dachförmig angestellte, im Bereich ihrer Biegungen (C) an den Gurten festgeschweißte Diagonalstrebenschlangen (A) aufweist, dadurch gekennzeichnet, dass die Biegungen (CO, CU) zumindest einer Diagonalstrebenschlange (A) in Hochrichtung des Gitterträgers (T) um in etwa die Höhe (h1, h2) der Bewehrungslage (BO, BU) über zumindest einen Gurt (O, U1, U2) überstehen, und dass in der Bewehrungslage (BU, BO) quer zum Gurt (O, U) verlaufende Querstäbe (8; 10) direkt oder indirekt an den Gurt angelegt sind
- Durchstanzbewehrung nach Anspruch 1, dadurch gekennzeichnet, dass im Gitterträger (T) die Biegungen (CO) beider Diagonalstrebenschlangen über den Obergurt (O) überstehen.
- Durchstanzbewehrung nach Anspruch 1, dadurch gekennzeichnet, dass in etwa in Gurtrichtung liegende Langsstäbe (9; 11) der Bewehrungslage an der dem Gurt abgewandten Seite auf den Querstäben angeordnet sind.
- Durchstanzbewehrung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass jede überstehende Biegung (C, CO, CU) in zwei in Gurtrichtung beabstandeten Bereichen (16) mit dem Gurt verschweißt ist.
- Durchstanzbewehrung nach Anspruch 1, dadurch gekennzeichnet, dass die vertikale statische Nutzhöhe (H) des Gitterträgers (T) durch zumindest über den Obergurt (O) überstehende Biegungen (CO) der Diagonalstrebenschlangen (A) erhöht ist.
- Durchstanzbewehrung nach Anspruch 1, dadurch gekennzeichnet, dass die Verankerung der Diagonalstreben der Diagonalstrebenschlangen (A) im Beton ein angeschweißter Gurt mit überstehender Biegung ist.
- Durchstanzbewehrung nach Anspruch 1, dadurch gekennzeichnet, dass die über den Gurt überstehende Biegung (CO, CU) der Diagonalstrebenschlange (A) mit einem im wesentlichen kontinuierlichen Biegungsverlauf (12) ausgebildet ist.
- Durchstanzbewehrung nach Anspruch 1, dadurch gekennzeichnet, dass die über den Gurt überstehende Biegung (CO, CU) aus zwei Bögen (13, 14) und einem dazwischenliegenden, in etwa geraden Abschnitt (15) besteht.
- Durchstanzbewehrung nach wenigstens einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass bei gegebenem Hochabstand (X) zwischen den Ober- und Untergurten die vertikale statische Nutzhöhe (H) des Gitterträgers (T) zwischen ca. 110 - 140 % von X, vorzugsweise zwischen ca. 115 - 133 % von X, beträgt.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29912526U | 1999-07-19 | ||
DE29912526U DE29912526U1 (de) | 1999-07-19 | 1999-07-19 | Durchstanzbewehrung für Flachdecken |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1070800A1 true EP1070800A1 (de) | 2001-01-24 |
EP1070800B1 EP1070800B1 (de) | 2003-10-29 |
EP1070800B2 EP1070800B2 (de) | 2010-04-07 |
Family
ID=8076297
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00114308A Expired - Lifetime EP1070800B2 (de) | 1999-07-19 | 2000-07-04 | Flachdecke aus bewehrten Elementdecken |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1070800B2 (de) |
AT (1) | ATE253156T1 (de) |
CZ (1) | CZ298232B6 (de) |
DE (2) | DE29912526U1 (de) |
PL (1) | PL207874B1 (de) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2180455A1 (es) * | 2001-07-27 | 2003-02-01 | Rotondo Luis Bozzo | Losa espacial mixta y procedimiento de fabricacion y utilizacion correspondientes. |
EP1630315A1 (de) * | 2004-08-21 | 2006-03-01 | Schöck Bauteile GmbH | Bauelement zur Schub- und Durchstanzbewehrung |
DE202007014677U1 (de) | 2007-10-19 | 2009-02-26 | Filigran Trägersysteme GmbH & Co. KG | Gitterträger |
KR20150042267A (ko) * | 2012-08-13 | 2015-04-20 | 필리그란 트래거시스테메 게엠베하 운트 코. 카게 | 지점 지지 요소 또는 평탄 콘크리트 천장 |
RU167855U1 (ru) * | 2016-07-06 | 2017-01-20 | федеральное государственное бюджетное образовательное учреждение высшего образования "Самарский государственный технический университет" | Арматурный каркас для многопролетных железобетонных балок |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1269324B (de) * | 1962-06-09 | 1968-05-30 | Walter Haslinger | Raeumlicher Fachwerktraeger |
DE2458081A1 (de) * | 1974-12-07 | 1976-06-10 | Rheinbau Gmbh | Verfahren zur herstellung eines gittertraegers und nach diesem verfahren hergestellter gittertraeger |
DE3410419A1 (de) * | 1983-03-21 | 1984-10-04 | AVI Alpenländische Veredelungs-Industrie Gesellschaft mbH, Graz, Steiermark | Schubbewehrungselement |
WO1989000226A1 (en) * | 1987-07-03 | 1989-01-12 | Smedjebacken Boxholm Stål Ab | Lattice girder |
EP0414485A2 (de) * | 1989-08-21 | 1991-02-27 | Square Grip Limited | Schubbewehrung für Säulenkopf |
EP0465776A1 (de) * | 1990-07-12 | 1992-01-15 | BADISCHE DRAHTWERKE GmbH | Gitterträger |
WO1993015287A1 (de) * | 1992-01-31 | 1993-08-05 | Franz Bucher | Gitterträger |
-
1999
- 1999-07-19 DE DE29912526U patent/DE29912526U1/de not_active Expired - Lifetime
-
2000
- 2000-07-04 AT AT00114308T patent/ATE253156T1/de active
- 2000-07-04 EP EP00114308A patent/EP1070800B2/de not_active Expired - Lifetime
- 2000-07-04 DE DE50004223T patent/DE50004223D1/de not_active Expired - Lifetime
- 2000-07-17 CZ CZ20002637A patent/CZ298232B6/cs not_active IP Right Cessation
- 2000-07-19 PL PL341556A patent/PL207874B1/pl unknown
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1269324B (de) * | 1962-06-09 | 1968-05-30 | Walter Haslinger | Raeumlicher Fachwerktraeger |
DE2458081A1 (de) * | 1974-12-07 | 1976-06-10 | Rheinbau Gmbh | Verfahren zur herstellung eines gittertraegers und nach diesem verfahren hergestellter gittertraeger |
DE3410419A1 (de) * | 1983-03-21 | 1984-10-04 | AVI Alpenländische Veredelungs-Industrie Gesellschaft mbH, Graz, Steiermark | Schubbewehrungselement |
WO1989000226A1 (en) * | 1987-07-03 | 1989-01-12 | Smedjebacken Boxholm Stål Ab | Lattice girder |
EP0414485A2 (de) * | 1989-08-21 | 1991-02-27 | Square Grip Limited | Schubbewehrung für Säulenkopf |
EP0465776A1 (de) * | 1990-07-12 | 1992-01-15 | BADISCHE DRAHTWERKE GmbH | Gitterträger |
WO1993015287A1 (de) * | 1992-01-31 | 1993-08-05 | Franz Bucher | Gitterträger |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2180455A1 (es) * | 2001-07-27 | 2003-02-01 | Rotondo Luis Bozzo | Losa espacial mixta y procedimiento de fabricacion y utilizacion correspondientes. |
EP1630315A1 (de) * | 2004-08-21 | 2006-03-01 | Schöck Bauteile GmbH | Bauelement zur Schub- und Durchstanzbewehrung |
DE202007014677U1 (de) | 2007-10-19 | 2009-02-26 | Filigran Trägersysteme GmbH & Co. KG | Gitterträger |
EP2050887A2 (de) | 2007-10-19 | 2009-04-22 | Filigran Trägersysteme GmbH & Co. KG | Gitterträger |
KR20150042267A (ko) * | 2012-08-13 | 2015-04-20 | 필리그란 트래거시스테메 게엠베하 운트 코. 카게 | 지점 지지 요소 또는 평탄 콘크리트 천장 |
US9469993B2 (en) | 2012-08-13 | 2016-10-18 | Filigran Tragersysteme Gmbh & Co. Kg | Point-supported element or flat concrete ceiling |
RU167855U1 (ru) * | 2016-07-06 | 2017-01-20 | федеральное государственное бюджетное образовательное учреждение высшего образования "Самарский государственный технический университет" | Арматурный каркас для многопролетных железобетонных балок |
Also Published As
Publication number | Publication date |
---|---|
CZ298232B6 (cs) | 2007-08-01 |
EP1070800B1 (de) | 2003-10-29 |
PL341556A1 (en) | 2001-01-29 |
ATE253156T1 (de) | 2003-11-15 |
EP1070800B2 (de) | 2010-04-07 |
DE29912526U1 (de) | 1999-09-23 |
CZ20002637A3 (cs) | 2001-03-14 |
PL207874B1 (pl) | 2011-02-28 |
DE50004223D1 (de) | 2003-12-04 |
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