EP0910710B1 - Procede pour realiser un ecran de palplanches sous un mur porteur ou une cloison porteuse existants - Google Patents

Procede pour realiser un ecran de palplanches sous un mur porteur ou une cloison porteuse existants Download PDF

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Publication number
EP0910710B1
EP0910710B1 EP98914718A EP98914718A EP0910710B1 EP 0910710 B1 EP0910710 B1 EP 0910710B1 EP 98914718 A EP98914718 A EP 98914718A EP 98914718 A EP98914718 A EP 98914718A EP 0910710 B1 EP0910710 B1 EP 0910710B1
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EP
European Patent Office
Prior art keywords
shaped
encasement
case
parts
underneath
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Expired - Lifetime
Application number
EP98914718A
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German (de)
English (en)
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EP0910710A1 (fr
Inventor
Etienne Heirwegh
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Individual
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/32—Foundations for special purposes
    • E02D27/48—Foundations inserted underneath existing buildings or constructions
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00—Working measures on existing buildings
    • E04G23/06—Separating, lifting, removing of buildings; Making a new sub-structure

Definitions

  • This invention relates to a process for carrying out a sheet piling underneath an existing bearing wall or partition, whereby a series of columns is formed in the ground, underneath the wall or partition to be supported, using a case-shaped element having three sides and one open side, which is directed towards the bearing wall or partition.
  • each of the columns is built up according to a sequence, in which a column with the same or similar dimensions is formed between two already finished columns, and for that purpose, the lost encasement sheets of the U-shaped encasement parts belonging to two neighbouring columns are used as lateral encasement parts, and at the back side of the column to be formed, vertical sheets with a width somewhat larger than the width of the column to be formed, and a height equal to that of the U-shaped encasement parts, are put up and manually slided with their outer edges behind the already formed U-shaped encasement part, upon which the created encasement space is finished in the same way as described in claim 1, with sheets which are secured with their edges to the neighbouring U-shaped encasement parts.
  • Figures 1-3 show three subsequent steps of the process according to the invention.
  • Figure 4 shows the final situation, after the positioning one on top of the other of five case-shaped elements.
  • Figure 5 schematically shows the positioning of a series of U-shaped encasement parts with respect to two case-shaped elements.
  • Figure 6 is a top view of a case-shaped element connected with a U-shaped encasement part in a particular embodiment, in which a platform is represented in dotted lines, from which the U-shaped encasement parts are mounted constructively underneath the foundation and to the cases.
  • Figure 7 schematically shows, also from a top view, two finished columns with an encasement under construction between those columns.
  • Figure 8 schematically shows, on another scale, two U-shaped parts according to a horizontal cross section.
  • FIGS 9 and 10 relate to details of the process according to the invention.
  • a case-shaped element 3 is put up.
  • the first case-shaped element 3 is resting on the ground, although according to figure 1, this case-shaped element has already sunk, up to a certain depth into the excavated soil, and this to a depth allowing to dig up the ground underneath the foundation footing, from the case-shaped element.
  • such an element is preferably 2.50 m long, having a width of 1.20 m and a height of almost 2 m. These dimensions are not binding, and are only given here as an example.
  • a first U-shaped encasement part 4 is shoved into the created space.
  • the encasement part 4 consists of two wings 4' and a wall 4" which extends between the wings 4'. In practice, this wall 4" may be considered as the back wall.
  • FIGS 7 and 8 show more details of these U-shaped parts.
  • All U-shaped encasement parts 4 are provided with flanges 5 transversely welded on, for the connection by bolts with flanges 6 belonging to the side sheets of each case-shaped element 3.
  • flanges 5 transversely welded on, for the connection by bolts with flanges 6 belonging to the side sheets of each case-shaped element 3.
  • lost encasement sheets 10 are placed on the inside of the U-shaped encasement parts 4, against the flanges 5. These sheets have about the same height as the U-shaped encasement parts, and are for example kept in place by a small angle iron 12 (visible in figure 8). This is only required until the moment the concrete 22 is cast. At this moment, also the bolts between the flanges 5 and 6 of the elements 3 and 4 are removed.
  • the space 8 was excavated by using as an encasement the side walls 7 of neighbouring case-shaped elements 3, already put into place, and their backfilled encasement 4.
  • the back i.e. at the side opposite the wall 1
  • sheets 9 were slided manually or mechanically behind two neighbouring walls 7'.
  • the lost encasement sheets 17 are put into place, and this from top to bottom, while gradually digging deeper.
  • the sheets 17 are secured, for example by tack-welding, to the back wall 4".
  • the encasement sheets 10 are put into place from bottom to top, as described above.
  • a foundation slab 15 is laid or pressed underneath the foundation to be formed.
  • This slab 15 can be a steel plate or be made of concrete.
  • a concrete slab may be provided with vertical short reinforcing rods 16 for anchoring the foundation slab 15 to the concrete mass of the sheet piling.
  • common reinforcing bars may be present in each column.
  • the platforms 19 are recovered. These necessary parts are used to enable the operations during the excavation and the putting into place of the encasement to be carried out. Their supports along the side walls 7 of the case-shaped elements are clearly indicated by reference 20 (figures 5 and 6).
  • the U-shaped encasement parts 4 can be manufactured from widely differing materials, such as steel or recycled synthetics.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Chemical & Material Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • General Engineering & Computer Science (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • Bulkheads Adapted To Foundation Construction (AREA)
  • Foundations (AREA)

Claims (7)

  1. Procédé pour réaliser un soutènement sous un mur porteur ou cloison existant(e), par quoi une série de colonnes est formée, dans le sol, sous le mur ou cloison (1) à soutenir, à l'aide d'un élément en forme de caisse comportant trois côtés et un côté ouvert qui est dirigé vers le mur porteur ou cloison, caractérisé en ce que le procédé comporte les étapes suivantes:
    a) de la terre est retirée de l'intérieur de l'élément en forme de caisse (3), et simultanément de la terre est retirée sur une surface qui correspond aux soutènement à introduire, et ce, sur une hauteur qui correspond à une fraction modulaire de la hauteur de l'élément en forme de caisse (3);
    b) dans l'espace créé sous le mur porteur ou cloison (1), une partie caisson en U (4) est introduite, le côté ouvert étant tourné vers l'élément en forme de caisse (3);
    c) les opérations a) à b) sont répétées jusqu'à obtention de la profondeur désirée; chacune des parties caissons en U (4) empilées les unes sur les autres est temporairement fixée aux bords verticaux de deux côtés dudit élément en forme de caisse (3);
    d) une dalle de fondation agrandie (15) est posée sur le sol ou glissée sous la partie caisson en U inférieure (4);
    e) des tôles caissons perdues (10) sont fixées au côté avant ouvert de chacune des parties caissons en U (4), et les boulons (11) entre les parties caissons en U et les éléments en forme de caisse sont enlevés;
    f) le béton est coulé dans le caisson ainsi créé.
  2. Procédé selon la revendication 1, caractérisé en ce que chacune des colonnes est construite selon une séquence, selon laquelle une colonne avec les mêmes dimensions ou avec des dimensions semblables est formée entre deux colonnes déjà finies, et en ce que, pour ce faire, les murs des parties caissons en U (4) servant de caisson perdu et appartenant à deux colonnes voisines, sont utilisés comme parties caissons latérales, et en ce que des tôles verticales (17) avec une largeur un peu plus grande que la largeur de la colonne à former, et une hauteur égale à celle des parties caissons en U (4), sont posées à l'arrière de la colonne à former, et sont manuellement poussées avec leurs bords extérieurs derrière la partie caisson en U déjà formée, sur quoi l'espace caisson créé est fini de la même façon que décrit à la revendication 1, avec des tôles (10) qui sont fixées aux bords des parties caissons en U voisines.
  3. Procédé selon l'une des revendications 1 et 2, caractérisé en ce que des barres de renfort (13) sont mises à travers les parois latérales verticales des parties caissons en U susmentionnées (4), avant la coulée du béton, afin de créer une structure monolithique.
  4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que des poutres d'étayement transversales internes (21) sont mises dans les éléments en forme de caisse susmentionnés (3) contre le fléchissement vers l'intérieur des parois des éléments en forme de caisse (3).
  5. Procédé selon l'une des revendications 1 à 4, caractérisé en ce que les parties caissons en U susmentionnées (4), qui peuvent être en acier, en béton ou en matière plastique, présentent une hauteur de presque 0,30 m à une longueur de presque 1,20 m.
  6. Procédé selon l'une des revendications 4 à 5, caractérisé en ce que les parois opposées desdits éléments en forme de caisse (3) sont dotées de supports pour recevoir les extrémités des poutres d'étayement (21).
  7. Procédé selon l'une des revendications 1 à 6, caractérisé en ce que la dalle de fondation est en acier ou en béton préfabriqué, afin de former une base de fondation agrandie.
EP98914718A 1997-04-15 1998-04-14 Procede pour realiser un ecran de palplanches sous un mur porteur ou une cloison porteuse existants Expired - Lifetime EP0910710B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
BE9700346 1997-04-15
BE9700346A BE1011109A3 (nl) 1997-04-15 1997-04-15 Werkwijze voor het uitvoeren van een onderschoeiing onder een bestaande draagmuur of wand en de daarbij gebruikte inrichting.
PCT/BE1998/000053 WO1998046834A1 (fr) 1997-04-15 1998-04-14 Procede et dispositif pour realiser un ecran de palplanches sous un mur porteur ou une cloison porteuse existants

Publications (2)

Publication Number Publication Date
EP0910710A1 EP0910710A1 (fr) 1999-04-28
EP0910710B1 true EP0910710B1 (fr) 2001-07-11

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP98914718A Expired - Lifetime EP0910710B1 (fr) 1997-04-15 1998-04-14 Procede pour realiser un ecran de palplanches sous un mur porteur ou une cloison porteuse existants

Country Status (5)

Country Link
EP (1) EP0910710B1 (fr)
AU (1) AU6912598A (fr)
BE (1) BE1011109A3 (fr)
DE (1) DE69801084T2 (fr)
WO (1) WO1998046834A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1011905A3 (nl) 1998-05-11 2000-02-01 Heirwegh Etienne Werkwijze voor het uitvoeren van een onderschoeiing onder een bestaande muur en hierbij gebruikt kistvormig element.
BE1017277A3 (nl) * 2006-10-11 2008-05-06 Philippe Ketels Werkwijze en inrichting voor het aanbrengen van een onderschoeiing onder een bestaande constructie.
BE1020706A3 (nl) 2012-04-20 2014-04-01 Rooy Carl Van Werkwijze voor het uitvoeren van een onderschoeiing onder een bestaande muur en bijhorende inrichting.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3091938A (en) * 1960-07-27 1963-06-04 Jr Harry Schnabel Method and structure for underpinning
BE1008084A3 (nl) * 1994-10-25 1996-01-09 Bekaert Sa Nv Werkwijze voor het vervaardigen van een onderschoeiingsmuur.

Also Published As

Publication number Publication date
BE1011109A3 (nl) 1999-04-06
WO1998046834A1 (fr) 1998-10-22
DE69801084D1 (de) 2001-08-16
DE69801084T2 (de) 2002-03-14
EP0910710A1 (fr) 1999-04-28
AU6912598A (en) 1998-11-11

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