EP3186049B1 - Verfahren zur herstellung eines betonkörpers - Google Patents

Verfahren zur herstellung eines betonkörpers Download PDF

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Publication number
EP3186049B1
EP3186049B1 EP15735617.1A EP15735617A EP3186049B1 EP 3186049 B1 EP3186049 B1 EP 3186049B1 EP 15735617 A EP15735617 A EP 15735617A EP 3186049 B1 EP3186049 B1 EP 3186049B1
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EP
European Patent Office
Prior art keywords
mold core
concrete
mold
boundaries
cylindrically shaped
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.)
Active
Application number
EP15735617.1A
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German (de)
English (en)
French (fr)
Other versions
EP3186049A1 (de
EP3186049C0 (de
Inventor
Hans-Peter Felder
Christoph RUCH
Michael LAAGER
Erhard ZÜRCHER
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.)
CENTRUM PAELE AS
Original Assignee
Centrum Pæle AS
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Publication date
Application filed by Centrum Pæle AS filed Critical Centrum Pæle AS
Publication of EP3186049A1 publication Critical patent/EP3186049A1/de
Application granted granted Critical
Publication of EP3186049C0 publication Critical patent/EP3186049C0/de
Publication of EP3186049B1 publication Critical patent/EP3186049B1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/28—Cores; Mandrels
    • B28B7/30—Cores; Mandrels adjustable, collapsible, or expanding
    • B28B7/306—Cores; Mandrels adjustable, collapsible, or expanding pliable or extensible
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22—Piles
    • E02D5/24—Prefabricated piles
    • E02D5/30—Prefabricated piles made of concrete or reinforced concrete or made of steel and concrete

Definitions

  • the present invention relates to a method for producing a concrete body according to the preamble of patent claim 1.
  • the object is therefore to provide technical solutions which do not have the aforementioned disadvantages of the prior art or at least partially avoid them.
  • the invention relates to a method for producing a concrete body with a cavity that is open to the outside via at least one opening.
  • a mandrel for shaping the cavity of the concrete body the shaping surfaces of which are at least partially formed by a layer of compressible material, which is arranged on a rigid support structure of the mandrel, is arranged in an outer mold for shaping the outer surface of the concrete body, whereby a space is formed between the shaping surfaces of the outer mold and the shaping surfaces of the mandrel.
  • This space is then filled with concrete and the concrete is cured therein, resulting in the concrete body.
  • the mandrel is then removed through the at least one opening from the cavity of the concrete body formed by it.
  • the outside form is preferably also removed, but it is also conceivable that this remains as lost formwork on the concrete body.
  • a mold core is preferably used in the method, the shaping outer surface of which is partially or completely formed by a layer of compressible material of uniform thickness, preferably with a thickness of between 2 mm and 6 mm.
  • Such mandrels have proven to be particularly suitable.
  • a rigid support structure with a desired contour is partially or completely covered with a film made of a plastic foam material, preferably with a PE foam film.
  • an outer shape is used whose shaping surfaces define the outer surface of an essentially cylindrical body.
  • the outer shape used with its shaping surfaces defines the outer surface of a body that has a cylindrical shaft on which one or more ribs run helically over a portion of its axial extent or over its entire axial extent, thereby forming a single or multiple external thread, preferably with a uniform pitch.
  • concrete screw piles can be produced with the method according to the invention.
  • a cylindrical mold core to use.
  • the advantages of the invention are particularly evident because in this way relatively long cylindrical cavities with a defined contour and surface can be formed in the concrete body, which is not possible with comparable effort with other methods.
  • a cylindrical mold core which has a substantially uniform, non-circular cross section over its axial extent, while simultaneously using an outer mold whose shaping surfaces define the outer surface of a substantially cylindrical body.
  • This mold core is arranged centrally in the outer mould.
  • a cylindrical mold core is preferably used, the outer boundaries of which, viewed in cross section, form a plurality of preferably identical projections extending radially outwards, the lateral boundaries of which are formed at least on one side by a surface extending essentially radially outwards or have such a surface.
  • the mold core used seen in cross-section, has areas at several points distributed evenly over its circumference at its outer limits, in which the distance between the limits from the central longitudinal axis of the cylindrical mold core preferably decreases steplessly in a first circumferential direction of the mold core, there is also the advantage that the method can be used to produce screwed concrete piles with a central opening for driving the same, in which a suitable design of the contour of the screwing tool to be inserted into this allows a radial self-centering of the screwing tool in the central opening of the screwed concrete pile can be achieved when screwing in as intended.
  • the areas in which the distance between the boundaries from a central longitudinal axis of the cylindrical mold core decreases in the first circumferential direction of the mold core are in the areas in which the boundaries form the radially outwardly extending projections.
  • the mold core in embodiments of the method in which a cylindrical mold core is used, it is preferable for the mold core to be guided out of the cavity of the concrete body in the direction of its longitudinal axis after the concrete has hardened. In the case of such methods, the advantages of the invention are particularly evident.
  • the filling of the space formed between the outer mold and the mold core with concrete is preferably carried out with the mold core oriented with its longitudinal axis in the vertical direction. In this way it can be ensured that the space formed between the outer mold and the mold core is completely filled with concrete.
  • a second aspect not part of the invention relates to a concrete screw pile made with the method according to the first aspect of the invention, preferably for creating a foundation, for example for a building or a bridge.
  • Such concrete bodies represent preferred process products.
  • the concrete screw pile has a cylindrical shank made of concrete, through which a central opening extends in the axial direction.
  • the shank On its outer circumference, the shank has one or more ribs, at least over a partial area of its axial extent, which run helically over its outer surface and thereby form a single-start or multiple-start external thread.
  • the pitch of the thread formed by the ribs is preferably uniform.
  • the central opening has a substantially uniform, non-circular cross-section over its entire extent, which enables a rotary form fit with a screwing tool for the purpose of transmitting a torque to the concrete screw pile around its longitudinal axis in an intended screwing-in direction.
  • the delimitations of the central opening have several radially outwardly extending depressions, whose lateral delimitations directed counter to the intended screwing-in direction are each formed by a surface extending essentially radially outwards or have such a surface for introducing a compressive force running essentially perpendicularly to this surface with the screwing-in tool in this area for the transmission of the torque in the direction of screwing in the thread from the screwing tool to the concrete screw pile.
  • These indentations are preferably of identical design and are advantageously distributed evenly over the circumference of the central opening.
  • the delimitations of the central opening viewed in cross section, have areas at several points evenly distributed over its circumference, in which the radial extent of the central opening, viewed from its center, decreases in the screwing-in direction, preferably steplessly and evenly.
  • This design of the central opening also makes it possible to achieve radial self-centering of the screwing tool in the central opening of the concrete screw pile when screwing in as intended by suitably designing the contour of the screwing tool to be inserted into it.
  • the areas in which the radial extent of the central opening decreases in the thread turning direction are in the radially outwardly extending depressions, which is preferred, it is possible to achieve the self-centering of the driving tool using the same contours of the driving tool that also serve to transmit the driving force, so that simple driving tool geometries that can be produced cost-effectively become possible.
  • FIG. 1 shows a longitudinal section through a mold filled with concrete 7 during the manufacture of a concrete screw pile 1 using the method according to the invention.
  • the mold consists of a two-part outer mold 13a, 13b for forming the outer surface 2, 4 of the concrete screw pile 1, a one-piece mold core 14 for forming the central opening 3 of the concrete screw pile 1 and a head plate 17 with a filling opening and a base plate 18.
  • the mold core 14 is arranged in the center of the outer mold 13a, 13b and is held there by the top plate 17 and the base plate 18 and centered.
  • the space formed between the outer mold 13a, 13b, the mold core 14, the base plate 18 and the top plate 17 was filled with concrete 7, which after hardening and the subsequent removal of the mold parts 13a, 13b, 14, 17, 18 forms the concrete screw pile 1 according to the invention.
  • the mold core 14 consists of a rigid support structure 16, the outside of which is covered with a PE foam sheet 15 with an uncompressed thickness of 4 mm.
  • the shaping outer surface of the mandrel 14 is formed by a uniformly thick layer 15 of a compressible material, which facilitates the subsequent removal of the mandrel 14 in the axial direction from the central opening 3 of the finished screwed concrete pile 1 formed by it, or is made possible at all in the case of long screwed concrete piles 1.
  • the essentially cylindrical mold core 14 has an essentially uniform, non-circular cross-section over its axial extent, the outer boundaries of which form two identical projections 19 extending radially outwards, the lateral boundaries of which are each formed by a surface 20 extending essentially radially outwards.
  • the outer boundaries in the area of these projections 19 form a region 21 adjacent to one of the essentially radially outwardly extending surfaces 20, in which the distance S3, S4 of the boundaries from the central longitudinal axis of the mold core 14 decreases continuously in a first circumferential direction R of the mold core 14 (the distance S3 from the central longitudinal axis of the mold core 14 is greater than the distance S4, which follows S3 in the first circumferential direction R).
  • the concrete screw pile 1 shows the concrete screw pile 1 produced in this way after the removal of the molded parts 13a, 13b, 14, 17, 18.
  • the concrete screw pile 1 has a length of 8 m and a diameter of 55 cm.
  • the concrete screw pile 1 has a cylindrical shank 2 made of concrete, through which a central opening 3 passes in the axial direction.
  • a rib 4 is arranged on the outer circumference of the shank 2 essentially over the entire axial extent of the concrete screw pile 1, which rib runs helically around the shank 2 and forms a single-start external thread with a uniform pitch. In the figures 5 and 6 this rib 4 is not shown in section to simplify the illustration.
  • the boundaries of the central opening 3 form a circular through hole, seen in cross section, from which is distributed evenly over its circumference, ie offset by 180° on the circumference.
  • two recesses 6 extend radially outwards.
  • the depressions 6 each have an axis of symmetry Z running in the radial direction and their lateral boundaries are each formed by a surface 9 extending essentially radially outwards.
  • the drive linkage 5 has a cylindrical shaft 10 which, on its outer surface over its entire length and evenly distributed over its circumference, i.e. offset by 180° on the circumference, carries two projections 11 running in the axial direction and extending outwards in the radial direction, which engage in the recesses 6 extending radially outwards in the boundaries of the central opening 3.
  • the projections 11 of the drive linkage 5 are each essentially trapezoidal in cross-section, with the oblique sides of the trapezoidal shape extending along radial lines running through the center of the drive linkage 5 .
  • the drive linkage 5 If the drive linkage 5 is then rotated in order to drive the concrete screw post 1 as intended, it rotates in the central opening 3 until the rotational play is eliminated by the projections 11 striking the radially outwardly extending surfaces 9 of the lateral limitations of the depressions 6, which are directed counter to the screwing-in direction R of the thread (see Fig 8 ). Then the transmission of the drive torque from the drive linkage 5 takes place the concrete screw pile 1 by introducing compressive forces F running essentially perpendicularly to this surface 9 with the projections 11 of the drive linkage 5 into these surfaces 9.
  • the boundaries of the central opening 3, viewed in cross-section, form in the depressions 6 adjoining the respective lateral boundaries of the respective depression 6 areas 8 in which the radial extent S1, S2 of the central opening 3 decreases uniformly and steplessly in the direction R of the thread (the radial extent S1 is greater than the radial extent S2, which follows S1 in the direction of the thread R).

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
  • Piles And Underground Anchors (AREA)
EP15735617.1A 2014-08-26 2015-06-24 Verfahren zur herstellung eines betonkörpers Active EP3186049B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH01282/14A CH710019A2 (de) 2014-08-26 2014-08-26 Verfahren zur Herstellung eines Betonkörpers sowie Betonschraubpfahl, hergestellt mit diesem Verfahren.
PCT/CH2015/000093 WO2016029325A1 (de) 2014-08-26 2015-06-24 Verfahren zur herstellung eines betonkörpers sowie betonschraubpfahl hergestellt mit diesem verfahren

Publications (3)

Publication Number Publication Date
EP3186049A1 EP3186049A1 (de) 2017-07-05
EP3186049C0 EP3186049C0 (de) 2023-07-26
EP3186049B1 true EP3186049B1 (de) 2023-07-26

Family

ID=53525031

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15735617.1A Active EP3186049B1 (de) 2014-08-26 2015-06-24 Verfahren zur herstellung eines betonkörpers

Country Status (4)

Country Link
EP (1) EP3186049B1 (pl)
CH (1) CH710019A2 (pl)
PL (1) PL3186049T3 (pl)
WO (1) WO2016029325A1 (pl)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108407075A (zh) * 2018-01-02 2018-08-17 上海华培动力科技股份有限公司 一种用于真空吸铸的升液管制备方法
CN110978253A (zh) * 2019-11-18 2020-04-10 福建大力新型建材科技有限公司 一种复合成型预制混凝土钢管桩的制作方法及装置
CN111618984A (zh) * 2020-05-15 2020-09-04 河南交院工程技术有限公司 一种混凝土螺旋孔道成型模具及成型方法
CH717618A1 (de) 2020-07-07 2022-01-14 Kibag Bauleistungen Ag Betonpfahlelement sowie Verfahren zum Zusammenkuppeln zweier Betonpfahlelemente.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3317182A1 (de) * 1983-05-11 1984-11-15 Veit Dennert KG Baustoffbetriebe, 8602 Schlüsselfeld Verfahren zur herstellung von betonfertigelementen
EP0127221A1 (en) * 1983-05-03 1984-12-05 Pieter Faber Concrete foundation pile and device for driving the same into the ground
DE4127326A1 (de) * 1991-08-20 1993-02-25 Huether Gmbh & Co Kg Wiederverwendbare giessform zur herstellung von bauteilen mit hinterschneidungen

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5056413A (pl) * 1973-09-21 1975-05-17
NL8204563A (nl) * 1982-11-24 1984-06-18 Troost Bouwelementen B V Werkwijze voor het vervaardigen van bouwelementen.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0127221A1 (en) * 1983-05-03 1984-12-05 Pieter Faber Concrete foundation pile and device for driving the same into the ground
DE3317182A1 (de) * 1983-05-11 1984-11-15 Veit Dennert KG Baustoffbetriebe, 8602 Schlüsselfeld Verfahren zur herstellung von betonfertigelementen
DE4127326A1 (de) * 1991-08-20 1993-02-25 Huether Gmbh & Co Kg Wiederverwendbare giessform zur herstellung von bauteilen mit hinterschneidungen

Also Published As

Publication number Publication date
EP3186049A1 (de) 2017-07-05
WO2016029325A1 (de) 2016-03-03
CH710019A2 (de) 2016-02-29
PL3186049T3 (pl) 2023-11-27
EP3186049C0 (de) 2023-07-26

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