EP2746016A1 - Méthode pour la fabrication de panneau préfabriqué pour construction de cuve circulaire et moule correspondant - Google Patents

Méthode pour la fabrication de panneau préfabriqué pour construction de cuve circulaire et moule correspondant Download PDF

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Publication number
EP2746016A1
EP2746016A1 EP13197592.2A EP13197592A EP2746016A1 EP 2746016 A1 EP2746016 A1 EP 2746016A1 EP 13197592 A EP13197592 A EP 13197592A EP 2746016 A1 EP2746016 A1 EP 2746016A1
Authority
EP
European Patent Office
Prior art keywords
mold
finishing
forming
panel
production
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
EP13197592.2A
Other languages
German (de)
English (en)
Inventor
Carolina Parenti
Nicola Parenti
Leonardo Maffi
Giuseppe Parenti
Cesare Pierluigi Montenet
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.)
Paver SpA
Original Assignee
Paver SpA
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 Paver SpA filed Critical Paver SpA
Publication of EP2746016A1 publication Critical patent/EP2746016A1/fr
Ceased legal-status Critical Current

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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
    • B28B7/0029—Moulds or moulding surfaces not covered by B28B7/0058 - B28B7/36 and B28B7/40 - B28B7/465, e.g. moulds assembled from several parts
    • B28B7/0035—Moulds characterised by the way in which the sidewalls of the mould and the moulded article move with respect to each other during demoulding
    • B28B7/0044—Moulds characterised by the way in which the sidewalls of the mould and the moulded article move with respect to each other during demoulding the sidewalls of the mould being only tilted away from the sidewalls of the moulded article, e.g. moulds with hingedly mounted sidewalls
    • 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
    • B28B7/0064—Moulds characterised by special surfaces for producing a desired surface of a moulded article, e.g. profiled or polished moulding surfaces
    • B28B7/0079—Moulds characterised by special surfaces for producing a desired surface of a moulded article, e.g. profiled or polished moulding surfaces with surfaces for moulding interlocking means, e.g. grooves and ribs
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H7/00—Construction or assembling of bulk storage containers employing civil engineering techniques in situ or off the site
    • E04H7/02—Containers for fluids or gases; Supports therefor
    • E04H7/18—Containers for fluids or gases; Supports therefor mainly of concrete, e.g. reinforced concrete, or other stone-like material

Definitions

  • the present invention relates to a method and a mold for the production of prefabricated panels to create circular tanks, such as above ground tanks or the like.
  • the invention relates to a method and a mold for the production of prefabricated panels in reinforced concrete, shaped so as to be placed side by side to form a basin of substantially circular form.
  • the invention also relates to a prefabricated panel obtained by means of the aforesaid production method.
  • tanks in particular above ground tanks, that can be constructed using prefabricated elements to limit costs and reduce production times.
  • tanks of this kind is particularly widespread, for example, in the agricultural sector to store sewage or excrement or in the industrial sector to create purification plants or the like.
  • These tanks are generally made by assembling a plurality of panels, which are arranged on a concrete base, placed side by side corresponding to the side edges and clamped by means of steel cables placed around the perimeter of the tank.
  • Tanks with this configuration and related panels suitable for their creation are, for example, described in EP 0425537 and EP 0514583 .
  • said panels are generally provided with side edges, shaped respectively with a male profile and a female profile so as to define a sort of dovetail that allows them to be joined when arranged side by side corresponding to the perimeter of the tank.
  • This method provides for a first forming step in which a reinforcement is positioned in a mold, concrete is cast and vibrated and, after it has hardened, the panel obtained is removed from the mold.
  • the mold is generally shaped so as to give the side edges of the panel the respective male and female profiles, in addition to ribs and passages for housing the cables.
  • an imperfect parallelism between the surfaces of two male and female profiles to be joined can lead to the formation of cracks and/or breakage after installation and tensioning of the steel cables that surround the panels.
  • the noteworthy clamping force transmitted by the cables to the panels means that in the areas not in contact between the side edges of two adjacent panels bending stresses (therefore with a component of tractive force) that cannot be sustained by the concrete are produced.
  • abrasive tools are used to carry out this finishing process (milling), which are in turn subject to a certain degree of wear after a certain period of time.
  • this wear leads to a gradual variation in the dimension of the tool, this latter must be replaced with relative frequency, or the purpose of the finishing operation would be gradually nullified as the difference in dimension between a panel machined with a new tool and with a worn tool (which could be installed side by side in the same tank) would be too great.
  • the object of the present invention is to provide a method and a mold for the production of prefabricated panels for creating circular tanks that solve the aforesaid problems of the prior art.
  • an object of the present invention is to provide a method and a mold for the production of prefabricated panels that makes it possible to simplify the steps to produce these panels.
  • an object of the present invention is to provide a method for the production of panels suitable to create circular tanks that can be assembled "dry", which makes it possible to reduce production times and costs.
  • a further object of the present invention is to provide a method for the production of prefabricated panels that makes it possible to reduce the number of tools or machines involved in the production process.
  • Another object of the present invention is to provide a mold for the production of prefabricated panels that makes it possible to obtain components with very low dimensional tolerances and which guarantee repeatability of said tolerances on a high number of examples produced.
  • a method for the production of a prefabricated panel with two opposing side edges shaped respectively with a male profile and a female profile that can be joined together, comprising at least:
  • Said single forming and finishing step allows a considerable reduction in production times and costs.
  • said forming operation and said finishing operation are carried out in a mold comprising at least one pair of side boards corresponding to said opposing side edges, each side board comprising a full beam on which at least one substantially non-deformable forming and finishing surface is obtained.
  • Said forming and finishing surfaces of the mold make it possible to produce panels with profiles of the side edges with very low tolerances that allow dry assembly of said panels without further machining operations.
  • the method of the present invention relates to the production of a reinforced concrete panel 10 used for the construction of circular tanks and in particular of above ground circular tanks.
  • Said panel 10 comprises a plate 11 of substantially quadrangular form with at least two opposing side edges shaped respectively with a male and female profile and configured to be joined when several panels are placed side by side to form the side edge of a tank.
  • the panel 10 is provided with at least a first side edge 12 shaped so as to define a male profile 13 and at least a second side edge 14 shaped so as to define a female profile 15.
  • said profiles 13 and 15 of the side edges are configured to be joined together and for this purpose have a substantially complementary form that makes it possible to create a joining surface when two panels are placed side by side.
  • said male profile 13 comprises a projection 13a with a substantially curvilinear section
  • the female profile 15 comprises a groove 15a, also with a substantially curvilinear section.
  • the radius of the groove 15a of the female profile 15 is greater with respect to that of the projection 13a male profile 13 so that the joining surface is constituted only of a portion of the surface of the side edges of the panel. This makes it possible to vary the angular position between two adjacent panels, to allow the creation of tanks of different diameter by varying the position of the joining surface on the side edge.
  • the method relates to the production of panels that can be assembled dry, i.e. without further pouring of concrete in the joining area between adjacent panels, before the step of tightening the steel cables that surround the tank.
  • these panels must be provided with male and female profiles of the side edges characterized by dimensional tolerances that allow the panels to be placed side by side without interposing concrete or other materials, but preventing the formation of cracks or fractures during tightening of the cables, hydraulic seal between one panel and the next.
  • the production method of panels 10 thus configured comprises a first forming operation, to give at least the first side edge 12 the male profile 13 and to give at least the second opposing side edge 14 the female profile 15, and a second finishing operation of said side edges to give them the aforesaid dimensional tolerances.
  • a characteristic of the production method according to the invention is that of carrying out said forming operation and said finishing operation in a single step of the production process.
  • said forming and finishing operations can be performed simultaneously in the same mold.
  • said forming operation and said finishing operation are carried out in a mold 20 that comprises at least one pair of side boards 21, 22 corresponding to said side edges 12, 14 of the panel 10.
  • said side boards 21, 22 in turn include beams 23, 24 obtained from a monolithic block of material, on each of which at least one forming and finishing surface 23a, 24a is shaped.
  • said forming and finishing surfaces 23a, 24a are substantially non-deformable, as the monolithic block, preferably made of steel, is capable of withstanding the hydrostatic thrusts of the concrete in liquid state poured into the mold, or other stresses caused by concrete residues, by differentiated tightening or the like, without deforming.
  • said beams 23, 24 can be made of steel or of other metal materials with the same mechanical strength.
  • the beams 23, 24 can have a substantially quadrilateral section with a face shaped to obtain the forming and finishing surfaces 23a, 24a.
  • the thickness of the beam is preferably variable between 20 millimeters and 60 millimeters to produce panels up to 8 meters and more in height and 20 - 40 centimeters thick.
  • the forming and finishing surfaces 23a, 24a thus make it possible to obtain a male profile 13 and a female profile 15 of the side edges with very limited tolerances, typically less than 2 tenths of millimeter, i.e. compatible with dry assembly of the tanks, without the need for further finishing operations on specific equipment, with all the ensuing disadvantages of cost and time.
  • said forming and finishing surfaces on each beam are obtained by removal of material, and in particular by milling.
  • this operation ensures precision of the forming surfaces with tolerances of less than one tenth of millimeter which in turn make it possible to limit the dimensional and form tolerances of the male and female profiles 13, 15 of the side edges within the predetermined values.
  • said side boards 21 and 22 can comprise a box element 27 on which the beams 23, 24 are connected. Said box element allows the lower surface of the side boards to be increased to facilitate connection of joint means 28 that allow movement of the side boards.
  • said box element 27 can comprise a metal sheet 8 millimeters thick, welded on the opposite part of the beam 23, 24 with respect to the part on which the forming surface is obtained.
  • the production method of the panel provides that the forming step also comprises the shaping of at least one face 16 of the panel 10 carried out by means of a base plate 25 of the mold specifically structured to produce a series of ribs or the like.
  • said base plate 25 can be provided with at least two rebates 26 corresponding to two opposing sides on which the side boards 21, 22 sit when said mold is in the closed position ( Figs. 3b, 3c ) for forming and finishing of the panel.
  • the forming surfaces 23a, 24a of the beams 23, 24 rest against said rebates 26 when the side boards are taken from the mold open position ( Fig. 3a ) to the mold closed position ( Fig. 3b ), before subsequent filling of the mold with the concrete to form the panel ( fig. 3c ).
  • the surface of said rebates 26 is preferably obtained by the removal of material, for example by milling.
  • the panel thus obtained can be installed dry to create circular tanks, i.e. without interposing other material between one panel and an adjacent panel, as the perfect planarity of the surfaces ensures adequate distribution of compression forces.
  • the production process is much faster, does not require a further step consisting of finishing of the male and female profiles of the panel by means of milling or similar machining operations.
  • the method of the invention also makes it possible to further reduce the costs of the production plant, as it does not require ad hoc equipment to carry out the milling step and replacement of the various tools.
  • a further advantage of the present invention is that of providing a method and a mold that allow the production of panels with very limited and practically constant dimensional tolerances, even in very large production batches.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Moulds, Cores, Or Mandrels (AREA)
  • Connection Of Plates (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
EP13197592.2A 2012-12-18 2013-12-17 Méthode pour la fabrication de panneau préfabriqué pour construction de cuve circulaire et moule correspondant Ceased EP2746016A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000031A ITPC20120031A1 (it) 2012-12-18 2012-12-18 Metodo per la produzione di pannelli prefabbricati per la realizzazione di vasche circolari e relativo stampo

Publications (1)

Publication Number Publication Date
EP2746016A1 true EP2746016A1 (fr) 2014-06-25

Family

ID=47722348

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13197592.2A Ceased EP2746016A1 (fr) 2012-12-18 2013-12-17 Méthode pour la fabrication de panneau préfabriqué pour construction de cuve circulaire et moule correspondant

Country Status (4)

Country Link
EP (1) EP2746016A1 (fr)
ES (1) ES1267939Y (fr)
IT (1) ITPC20120031A1 (fr)
MX (1) MX357501B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020208561A1 (fr) * 2019-04-10 2020-10-15 Speedfloor Limited Panneau de construction

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113246271B (zh) * 2021-06-03 2022-09-27 安徽智恒机械设备有限公司 预制构件加工成型装置及其工作方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5218037A (en) * 1975-08-01 1977-02-10 Tsuzuki Junichi Composite segment and its preparation method
EP0425537A1 (fr) 1988-06-13 1991-05-08 Centocor Inc Procede d'estimation de risque d'infarctus du myocarde.
EP0514583A1 (fr) 1991-05-23 1992-11-25 Giuseppe Parenti bassins circulaires au dessus du sol
EP0707121A1 (fr) 1994-10-14 1996-04-17 Giuseppe Parenti Panneaux pour la construction de réservoirs circulaires au-dessus du sol, moule et procédé de construction
IT1306407B1 (it) 1998-10-12 2001-06-06 Giuseppe Parenti Pannelli fresati in particolare per la realizzazione di vaschecircolari e relativo metodo di produzione.
CN101486228A (zh) * 2009-02-10 2009-07-22 江苏工业学院 隧道混凝土管片钢模液压驱动平移开合装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5218037A (en) * 1975-08-01 1977-02-10 Tsuzuki Junichi Composite segment and its preparation method
EP0425537A1 (fr) 1988-06-13 1991-05-08 Centocor Inc Procede d'estimation de risque d'infarctus du myocarde.
EP0514583A1 (fr) 1991-05-23 1992-11-25 Giuseppe Parenti bassins circulaires au dessus du sol
EP0707121A1 (fr) 1994-10-14 1996-04-17 Giuseppe Parenti Panneaux pour la construction de réservoirs circulaires au-dessus du sol, moule et procédé de construction
IT1306407B1 (it) 1998-10-12 2001-06-06 Giuseppe Parenti Pannelli fresati in particolare per la realizzazione di vaschecircolari e relativo metodo di produzione.
CN101486228A (zh) * 2009-02-10 2009-07-22 江苏工业学院 隧道混凝土管片钢模液压驱动平移开合装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020208561A1 (fr) * 2019-04-10 2020-10-15 Speedfloor Limited Panneau de construction
GB2596949A (en) * 2019-04-10 2022-01-12 Speedfloor Ltd Building panel

Also Published As

Publication number Publication date
ES1267939U (es) 2021-05-19
MX357501B (es) 2018-07-12
ITPC20120031A1 (it) 2014-06-19
ES1267939Y (es) 2021-09-13
MX2013014102A (es) 2014-06-20

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