EP1026335A2 - Elément préfabriqué en béton - Google Patents

Elément préfabriqué en béton Download PDF

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Publication number
EP1026335A2
EP1026335A2 EP00101467A EP00101467A EP1026335A2 EP 1026335 A2 EP1026335 A2 EP 1026335A2 EP 00101467 A EP00101467 A EP 00101467A EP 00101467 A EP00101467 A EP 00101467A EP 1026335 A2 EP1026335 A2 EP 1026335A2
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EP
European Patent Office
Prior art keywords
web
concrete
precast
part according
precast concrete
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.)
Ceased
Application number
EP00101467A
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German (de)
English (en)
Other versions
EP1026335A3 (fr
Inventor
Richard Prof. Dr.-Ing. Rojek
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 EP1026335A2 publication Critical patent/EP1026335A2/fr
Publication of EP1026335A3 publication Critical patent/EP1026335A3/fr
Ceased legal-status Critical Current

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    • 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
    • E04B5/17—Floor structures partly formed in situ
    • E04B5/23—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated
    • 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
    • E04B5/36—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/20—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members

Definitions

  • the invention relates to a novel design of prefabricated steel, prestressed and fiber-reinforced concrete parts, which are supplemented with in-situ concrete, the prefabricated parts achieve significant advantages in the construction stages through the new type of training and a favorable interaction with the in-situ concrete in the final state to back up.
  • the device according to the invention With the help of the device according to the invention, almost all beam and plate-shaped prefabricated structures with in-situ concrete addition can be more economical than previously run.
  • prefabricated parts according to the invention can initially for ceiling panels applied, which are manufactured by prefabricated parts with in-situ concrete supplement become.
  • Comparable components have been known for decades such as prefabricated ceilings, element ceilings, lattice girder ceilings or Filigree panels are used and are nowadays used in residential construction and constructively related area of commercial construction represents the control solution, since it the economic advantages of prefabricated construction with the structural advantages of the in-situ concrete. Thanks to the precast panels, time and Thus, labor-intensive formwork work almost completely and armor largely avoided.
  • the exposed concrete lower surface is another advantage over pure in-situ concrete solutions the slab (omission of the plaster) and the reduction in construction time.
  • the previously known partial prefabricated ceilings consist of a lower, approx. 4 to 8 cm thick precast reinforced concrete slab and a supplementary in-situ concrete layer to form a solid reinforced concrete slab.
  • the interaction of the two Components are achieved by truss-like steel lattice girders, which with the lower plate reinforcement can be installed in the prefabricated part and in the later applied in-situ concrete is sufficient.
  • the lattice girders also have the task of being the bending girders Panel dead weight and the traffic loads occurring during construction to guide the plate supports or to provisional intermediate supports.
  • a major disadvantage of this design is that usually despite precast construction, auxiliary support is still necessary because the lattice girders effective in the construction state only have a limited load capacity and Have flexural rigidity and the arrangement of larger numbers or stronger carriers would become too uneconomical.
  • Another variant to the pure steel lattice girders where the steel upper flange is the lattice girder additionally with pressure-resistant concrete is required for larger ones Spans also auxiliary supports.
  • Another major limitation of these systems is that the effective in construction Steel lattice girders do not offer favorable conditions to take advantage of To be able to use prestressed concrete. The limitations shown have led to the fact that the use of the partial prefabricated ceilings has predominantly so far limited to smaller spans and usually additional ones Aid costs incurred.
  • the precast elements so that they too with larger spans of the final solid slabs in the construction state without Get help, favorable conditions for preload offer and are designed so that they are a continuously effective in-situ concrete supplement receive.
  • the concrete beams should form a reliable bond with the in-situ concrete, so that the Remove the load in the final state as a solid plate with a uniform effect.
  • This required bond is achieved by the lateral web surfaces of the Concrete beams are designed so that they work together of the bonded forces required from the precast and in-situ concrete.
  • precast elements to complement with in-situ concrete to massive Platten thus combines the respective advantages of the previously known, competing Systems of lattice girder ceilings and precast hollow panels by they do not need support, very good for low cost Fitted bed prestressing are suitable and due to the in-situ concrete supplement continuous and / or biaxial bearing plate systems with cheaper Washer load capacity can be supplemented. It also gives that smooth ceiling underside and the optimal reduction in construction time.
  • the formation of the prefabricated parts with composite web side surfaces can also be used to advantage in various beam-like prefabricated parts.
  • the construction will be more favorable compared to conventionally trained prefabricated parts achieved by a larger beam height and in many cases a much cheaper bending pressure zone is achieved with better support conditions. This can often the design height for the final state can be reduced, which immediately to economic and, if necessary, design, as well as indirectly over less Storey heights lead to further economic advantages.
  • FIG. 1 shows the cross section through a multi-wall composite panel, which consists of the Web 1 and the lower plate 2 is made. Training is an essential feature the lateral web surfaces 3 such that the composite web panel with the later in-situ concrete supplement 4, the upper edge 5 shown in dashed lines is a frictional bond.
  • FIG. 2 shows the top view of a multi-wall composite panel 6.
  • Ceiling fields are to be arranged side by side several composite panels. Accordingly, in Figures 1 and 2 there is also a laterally adjoining one Element 7 shown.
  • FIG. 2 The special design of the lateral web surfaces 3 is shown in FIG. 2
  • the top view shown can be seen particularly well in the for better readability the top 8 of the web is highlighted by dashed hatching are.
  • the training according to the invention for the non-positive connection is exemplified by a trapezoidal profile of the web surfaces.
  • this frictional connection can also be achieved by sawtooth-like, wave-like or otherwise suitable formwork forms such as knob formwork can be achieved.
  • other solutions such as B. Formation of the web side surfaces with perforated and profiled sheets such as e.g. B. Expanded rib metal, faltering, washed concrete structure, connecting shear reinforcement, Dowels or other measures.
  • B Formation of the web side surfaces with perforated and profiled sheets
  • B Expanded rib metal, faltering, washed concrete structure, connecting shear reinforcement, Dowels or
  • FIG. 3 shows a longitudinal section through the composite web panel, wherein the webs 1 protruding from the lower plate 2 in this illustration have the same height over the entire length of the panel. That height will preferably chosen so that the upper plate reinforcement directly on the top of the web 8 can be placed and then the required concrete cover this reinforcement is guaranteed by the in-situ concrete supplement 5. If, in individual cases, no upper reinforcement is required in the web areas , the top edge of the webs can be level with the top edge of the in-situ concrete supplement be chosen.
  • FIG. 4 is a longitudinal section through a corresponding Variant of multi-wall composite panels shown, in which the web top edges 8 in middle field area flush with the later concrete upper edge 5 of the final Solid sheet lying. Deviating from the previously known, comparable As a result, systems occur with multi-wall sheets - unless they do can be produced with the help of remaining sheets - no corrosion problems on.
  • variable course of the upper edge of the web 8 exemplified by cove-shaped steps with negligibly small
  • Alternative would be a gable roof-shaped course of the top edges of the web is also conceivable.
  • FIG. 5 shows this in FIGS. 1 to 3 Cross section, top view and longitudinal section of the finished part shown in an isometric representation.
  • this representation u. a. It can be seen that the multi-wall sheets in the construction state inverted rib ceilings represent and accordingly simplified, economic design rules can be applied. Furthermore, by the representation also understandable that after the addition of the in-situ concrete resulting solid sheets also bending stresses transverse to the web direction received - be it only as a result of the transverse contraction in uniaxial clamps Slabs or from direct biaxial load-bearing capacity. With conventional Lattice girder ceilings will only make the associated cross reinforcement friendly to the construction site installed in the lower plate if the finished solid plate is uniaxial wearing.
  • the cross reinforcement profiled empty tubes could preferably be installed in the webs, whose cross-section would be chosen so that this transverse reinforcement too in the web area after the in-situ concrete supplement for the required corrosion protection is reliably encased in concrete.
  • the resulting Empty pipe cross sections would also ensure that the installation of the Cross reinforcement would not be more complex than conventional ones Lattice girder ceilings.
  • the individual formwork sheets of this design variant can be simple and advantageously be joined together to form a unit via plug-in bracket 11.
  • These plug-in brackets can also be used as suspension reinforcement in the construction state for the load on the lower plates 2.
  • the Formwork sheets are equipped with a bead 12, this not only serves the required sheet metal bracing, but also offers the possibility of Formwork sheets only afterwards - after concreting the lower slab 2 - fit exactly and thus a particularly simple workflow to enable.
  • the bead 12 is to be formed exactly as high that the formwork sheets reach their required position exactly when the bead sits on the transverse reinforcement 13.
  • the formwork sheets can according to shape and cross section are also designed so that they are both in Construction state as well as in the final state as compression, tension and shear reinforcement Act.
  • Another possibility to minimize the effort for the web formwork consists of prefabricating the webs in their own formwork and then to lay in the fresh concrete of the slabs 2.
  • the cross section shown in FIG. 8 shows a very detailed section advantageous variant of today's flat ceilings.
  • the Element 15 represents the ceiling area between the supports, the is also referred to as a belt strip while the element placed on it 16 is arranged in the much less stressed field area. Because of the favorable load-bearing capacity of the finished parts - especially if they are biased - it is sufficient if the belt strip elements 15 together with the in-situ concrete supplement 4 the strength of a comparable flat ceiling exhibit.
  • the field elements 16, however, can be significantly lower be formed. This not only allows the clearly recognizable, extremely easy installation option, but also leads to clearly lower material consumption, which not only results in direct cost advantages, but more about the lower load on the entire supporting structure Cost advantages means.
  • the proposed training of part-finished ceiling provides for all applications is another, very simple way, in the ceiling structure weight (and concrete) to save: It need only prior to the introduction of floor systems - the easiest already in the precast plant - on the lower plates 2 according to the representations 8 light packing 17 are installed.
  • Examples of this advantageous embodiment are 9 ⁇ -plate elements in the figure 18 shown.
  • the elements are each different from the conventional ones Shaping supplemented at the top by composite panel elements 19.
  • the illustration clearly shows that this does not only mean that in the state of construction effective construction height can be increased significantly, but that at the same time, the finished parts to extremely powerful cross-section beams be expanded, which is particularly true for pre-stressed prefabricated parts is particularly advantageous and also with single-ply slab beams, as in Bridge construction can be used, can be applied extremely advantageously.
  • Another great advantage of the composite panel elements 19 is that in the support area to high-performance support brackets with a low overall height can be trained. Become the associated support bracket Designed according to Figure 10, both elements can together to a considerable Reduction of the construction height and thereby to corresponding economic benefits.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Panels For Use In Building Construction (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Bridges Or Land Bridges (AREA)
EP00101467A 1999-02-04 2000-01-26 Elément préfabriqué en béton Ceased EP1026335A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29901873U 1999-02-04
DE29901873U DE29901873U1 (de) 1999-02-04 1999-02-04 Stahlbetonfertigteil

Publications (2)

Publication Number Publication Date
EP1026335A2 true EP1026335A2 (fr) 2000-08-09
EP1026335A3 EP1026335A3 (fr) 2001-04-25

Family

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Family Applications (1)

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EP00101467A Ceased EP1026335A3 (fr) 1999-02-04 2000-01-26 Elément préfabriqué en béton

Country Status (2)

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EP (1) EP1026335A3 (fr)
DE (1) DE29901873U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105569243A (zh) * 2014-11-06 2016-05-11 齐齐哈尔大学 自撑式预应力组合梁轻骨料混凝土叠合板

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103526879A (zh) * 2013-10-24 2014-01-22 华煜建设集团有限公司 一种混凝土预制件

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB159954A (en) * 1919-12-04 1921-03-04 William Watson Ribbed permanent soffit for carrying concrete floors
DE2852401A1 (de) * 1978-12-04 1980-06-19 Nikolaus Wlatkowitsch Vorgefertigtes-selbsttragendes decken- und wandelement, aus stahlbeton als halbfertigteil mit dem dazugehoerigen herstellungsverfahren
AT375710B (de) * 1981-11-13 1984-09-10 Katzenberger Helmut Fertigteilplattendecke aus beton
FR2563552A1 (fr) * 1984-04-25 1985-10-31 Gaillard Michel Poutrelles isolantes et entrevous pour la realisation de planchers isolants en beton, et dispositif pour leur fabrication
DE4112316A1 (de) * 1990-04-17 1991-10-24 Ibse Industrialisation Du Bati Vorgefertigte elemente zur herstellung einer platte sowie ausgehend von diesen elementen erhaltene platte

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE805787C (de) * 1949-08-06 1951-05-31 Holzmann Philipp Ag Schalplatte fuer Industriebetondecke
CH436640A (fr) * 1965-05-20 1967-05-31 Haering Jean Pierre Dalle en béton
DE6750158U (de) * 1968-06-25 1969-01-02 Rheinbau Gmbh Stahlbetonplatte zum errichten von decken, waenden und dergleichen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB159954A (en) * 1919-12-04 1921-03-04 William Watson Ribbed permanent soffit for carrying concrete floors
DE2852401A1 (de) * 1978-12-04 1980-06-19 Nikolaus Wlatkowitsch Vorgefertigtes-selbsttragendes decken- und wandelement, aus stahlbeton als halbfertigteil mit dem dazugehoerigen herstellungsverfahren
AT375710B (de) * 1981-11-13 1984-09-10 Katzenberger Helmut Fertigteilplattendecke aus beton
FR2563552A1 (fr) * 1984-04-25 1985-10-31 Gaillard Michel Poutrelles isolantes et entrevous pour la realisation de planchers isolants en beton, et dispositif pour leur fabrication
DE4112316A1 (de) * 1990-04-17 1991-10-24 Ibse Industrialisation Du Bati Vorgefertigte elemente zur herstellung einer platte sowie ausgehend von diesen elementen erhaltene platte

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105569243A (zh) * 2014-11-06 2016-05-11 齐齐哈尔大学 自撑式预应力组合梁轻骨料混凝土叠合板

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Publication number Publication date
EP1026335A3 (fr) 2001-04-25
DE29901873U1 (de) 2000-02-24

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