EP0273492A2 - Verfahren zum Herstellen von Systemfussböden - Google Patents

Verfahren zum Herstellen von Systemfussböden Download PDF

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Publication number
EP0273492A2
EP0273492A2 EP87202345A EP87202345A EP0273492A2 EP 0273492 A2 EP0273492 A2 EP 0273492A2 EP 87202345 A EP87202345 A EP 87202345A EP 87202345 A EP87202345 A EP 87202345A EP 0273492 A2 EP0273492 A2 EP 0273492A2
Authority
EP
European Patent Office
Prior art keywords
shuttering
floor
prestressed concrete
beams
sidewalls
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
Application number
EP87202345A
Other languages
English (en)
French (fr)
Other versions
EP0273492A3 (en
EP0273492B1 (de
Inventor
S Betonindustrie B Oudenallen
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
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AT87202345T priority Critical patent/ATE65099T1/de
Publication of EP0273492A2 publication Critical patent/EP0273492A2/de
Publication of EP0273492A3 publication Critical patent/EP0273492A3/en
Application granted granted Critical
Publication of EP0273492B1 publication Critical patent/EP0273492B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
    • B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
    • B28B23/22—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members assembled from preformed parts
    • 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
    • B28B19/00—Machines or methods for applying the material to surfaces to form a permanent layer thereon

Definitions

  • the invention relates to a method of manufacturing system floors comprising of at least one prefabricated floor element and which floor element or floor elements are thereafter mounted on site.
  • At least one prestressed concrete beam is provided with reinforcing media extending from its upper surface and which beam at least during or after completely hardening out is mounted upside down in flat lying shuttering and at a distance from the bottom thereof equal to or smaller than the required thickness of the floor slab, which shuttering is provided with a flat, smooth and seamless bottom and sidewalls preferably of steel plate and after which this shuttering, into which a reinforcement has been introduced parallel to the bottom in the form of a mat of contructional steel for example, is or will be poured with a concrete layer of the required thickness of the floor slab which can then be vibrated and after sufficient hardening the floor element so obtained can be removed from the shuttering.
  • positioning means can be applied to the end surfaces of the beams and which can co-operate with positioning means of a clamping arrangement on the outer side of the shuttering between which the beams of prestressed concrete are clamped fast in immovable positions during pouring of the floor slab.
  • predetermined fixed positions of the prestressed concrete beams with respect to the shuttering is achieved and which positions do not change during compacting of the poured concrete and through which adhesion of the floor slab concrete to the beams remains undisturbed.
  • the lengths of the prestressed concrete beams are chosen to be, at their longest, equal to the length of the floor elements minus the sum of the widths of the mounting edges, whilst the height of the the shuttering at least in the positions of the mounting edges is at least equal to the required thickness of the floor slab and to which there may be fixed at this location a removable element preferably of steel plate with a smooth underside and which is present during pouring and compacting of the concrete layer.
  • the bottom of the shuttering comprises preferably a flat, smooth steel plate which is provided on its underside with strengthening ribs and on which at least three upstanding sidewalls are arranged and of which at least one is removable, and wherein these sidewalls are joined in pairs.
  • the bottom can be of a smooth material on the condition that it is resistant to wet, freshly poured concrete although in practice a steel plate is preferred.
  • the number of upstanding sidewalls depends on the form taken by the floor element. If it is triangular in form, then naturally three sidewalls are sufficient. At least one of these sidewalls is removable and through which, after hardening out, the floor element can be easily removed from the mould. Should the sidewalls not come free when required to, then the edges of the floor element will be damaged so that even then another finishing operation must be carried out on floor element when it is mounted in place.
  • the fixing herefor can be by any currently used method, such as by bolting or welding and suchlike etc. example.
  • the prestressed concrete beams can be laid on the bottom of the shuttering with the interposition of distance-pieces therebetween and after which the concrete layer for the floor is poured and then vibrated for compacting by a vibrating appliance.
  • a two-part clamping device is fitted on the outside of the shuttering for each prestressed concrete beam and the two parts of which clamping device are arranged on different sides of the shuttering.
  • the facing sides of the device are each provided with positioning means for positioning the prestressed concrete beam or beams.
  • the prestressed concrete beams are always maintained in the same position relative to the bottom of the shuttering which can then be vibrated as a whole without the prestressed concrete beams losing their mutually-correct positions.
  • the height of the adjacently arranged sidewalls, and if required the height of the connecting sidewall at the place where a mounting edge of a floor element is to be formed must be equal to that of the desired thickness of the mounting edge and on which if required there may be mounted the removable element of preferably steel plate with a smooth underside and with a width which is at least equal to the mounting edge.
  • the sidewalls of the longitudinally running prestressed concrete beam or beams are provided with complementary sections running in the longitudinal direction and parallel to the bottom and at like distances therefrom.
  • a floor element is built up of at least one prestressed concrete beam on the top of which there is arranged a reinforced concrete floor slab with flat and smooth top and side surfaces and which forms a single entity with the prestressed beam or beams which can be provided with positioning means and a have a length which is at the most equal to the length of the floor slab.
  • At least two smooth, flat mounting edges of like overall thickness are provided and that the prestressed concrete beams or beams have a length which is at the most equal to the length of the floor element minus the sum of of the widhts of the mounting edges.
  • the longitudinally running sidewalls of the prestressed concrete beam or beams are provided with complementary sections in the longitudinal direction and parallel therewith.
  • Fig. 1 shows a shuttering according to the invention and comprising a steel plate bottom to which strengthening ribs 2 are welded to the underside thereof, further strengthening ribs (not shown) are are welded vertically with respect thereto so that the bottom 1 is rigid in all directions.
  • Sidewalls 3 of angle-iron are fixed to the bottom 1. This fixing can be achieved in various manners by the use of bolts, clamps or by welding. The same is applicable to the sidewalls 4 which in this case are also made of angle-iron. If sidewalls 3 and 4 are welded then the floor element can only be removed in the vertical direction and its edges can easily be damaged. This can be avoided by making at least two adjacent sidewalls removable so that the floor element can first be removed from the other sidewalls before hoisting out.
  • Fig, 2 is a front view of the arrangement of fig. 1 without the sidewalls 4. It can be clearly seen how a clamping device comprising two parts 5 and 6 can clamp the prestressed concrete beam 7 in the desired position so that the whole of the shuttering can be vibrated without the position of the prestressed concretebeam 7 relative to shuttering does not change neither can it come loose from the poured floor slab. If it is required to position the prestressed concrete beam 7 without the aid of the parts of the clamping device 5 and 6, then this can be done with supporting blocks of cement or concrete as shown by the dotted line 8. In this case, it is impossible to vibrate the shuttering as a whole and the use of a vibrating appliance is indicated here.
  • both the prestressed concrete beam 7 and the clamping device 5 and 6 are provided with complementary positioning means.
  • a trio of possible types of such positioning means are illustrated in fig. 3.
  • the positioning device is in the form of four pins 9 introduced into the end of the prestressed concrete beam 7 to co-operate with the complementary positioning means in the clamping device 5 and 6 which are in the form of four holes.
  • Fig.3b. shows positioning means in the form of recesses 10 of rectangular cross-section and into which a complementary extension of the clamping device 5 and 6 fits.
  • Fig. 3b shows a positioning means in the form of a groove 11 of rectangular cross-section and which for example may extend over a distance of ten centimeters in the longitudinal direction in the side of the prestressed concrete beam 7 and co-operates with a complementary strip of rectangular cross-section fixed to the clamping device 5 and 6.
  • the positioning means in the prestressed concrete beam 7 may also be used if required in combination with a hoisting-gear to lift the floor elements out of the shuttering and to turn them over after they have hardened out.
  • Fig.4. shows how to obtain smooth mounting edges of unform thickness.
  • the sidewalls 4 are milled off to a height 'd' equal to the required thickness of the mounting edges and to which steel elements 12 in the form of angle-irons with smooth undersides are fixed. It is also possible to allow these steel elements 12 to extend over the sidewalls and, if the latter are removable, to weld the steel elements fast thereto.
  • Fig,5 shows a floor element in accordance with the invention in which the prestressed concrete beam 7 extends over the whole of the length of the floor slab 13 whilst fig. 6. shows a floor element the length of the prestressed concrete beam 7 of which is equal to the length of the floor element minus the sum of the widths of the mounting edges 14. It will be clear that the floor elements shown here are as they come out of the shuttering, thus upsidedown.
  • Fig.7 shows a floor element of which the sidewalls extending in the longitudinal direction of the prestressed concrete beams 7 are provided with complementary sections 15 and 16 running parallel therewith and at equal distances from the upper surfaces at equal distances therefrom. If two adjacent floor elements are pushed against one another, then these complementary sections slide into one another and remain fixed relative to one another when a load is imposed on the floor elements between the mounting edges.
  • the prestressed concrete beams may be poured into a shuttering provided with a lining of insulating material with a more or less porous surface. After hardening out of the concrete mass, the insulating material is bonded fast to it. After pouring the floor slab, the insulating material is applied to that part of the floor slab exposed clear of the prestressed concrete beams with the exception of the mounting edges thereof.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
EP87202345A 1986-12-01 1987-11-26 Verfahren zum Herstellen von Systemfussböden Expired - Lifetime EP0273492B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87202345T ATE65099T1 (de) 1986-12-01 1987-11-26 Verfahren zum herstellen von systemfussboeden.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8603068 1986-12-01
NL8603068A NL8603068A (nl) 1986-12-01 1986-12-01 Een werkwijze voor het vervaardigen van systeemvloeren.

Publications (3)

Publication Number Publication Date
EP0273492A2 true EP0273492A2 (de) 1988-07-06
EP0273492A3 EP0273492A3 (en) 1988-07-27
EP0273492B1 EP0273492B1 (de) 1991-07-10

Family

ID=19848932

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87202345A Expired - Lifetime EP0273492B1 (de) 1986-12-01 1987-11-26 Verfahren zum Herstellen von Systemfussböden

Country Status (4)

Country Link
EP (1) EP0273492B1 (de)
AT (1) ATE65099T1 (de)
DE (1) DE3771317D1 (de)
NL (1) NL8603068A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9487950B2 (en) 2006-11-14 2016-11-08 Srb Construction Technologies Pty. Ltd. False formwork for moulding concrete panels
CN107190905A (zh) * 2017-07-14 2017-09-22 北京善筑科技股份有限公司 冷弯薄壁型钢一体化梁板及其制作方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2510810A (en) * 1948-02-04 1950-06-06 Paul L Furst Siding form
GB675394A (en) * 1950-02-21 1952-07-09 Edward Alexander Benton Improvements in or relating to adjustable moulds for making flagstones and the like
US3072993A (en) * 1960-04-13 1963-01-15 Harbison Walker Refractories Brick molding apparatus for incorporating metal inserts in refractory bricks
GB1240628A (en) * 1969-08-26 1971-07-28 Jan-Olaf Bohlin Load bearing floor
ES230060Y (es) * 1977-07-21 1978-03-16 Elemento modular para formacion de tableros en cubiertas.
US4493177A (en) * 1981-11-25 1985-01-15 Grossman Stanley J Composite, pre-stressed structural member and method of forming same
FR2578276B1 (fr) * 1985-03-01 1988-06-03 Rech Etudes Tech Element de construction en beton, notamment element de plancher, et procede pour sa fabrication

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9487950B2 (en) 2006-11-14 2016-11-08 Srb Construction Technologies Pty. Ltd. False formwork for moulding concrete panels
CN107190905A (zh) * 2017-07-14 2017-09-22 北京善筑科技股份有限公司 冷弯薄壁型钢一体化梁板及其制作方法

Also Published As

Publication number Publication date
ATE65099T1 (de) 1991-07-15
EP0273492A3 (en) 1988-07-27
DE3771317D1 (de) 1991-08-14
NL8603068A (nl) 1988-07-01
EP0273492B1 (de) 1991-07-10

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