FR2659677A1 - Method for producing submerged foundations, particularly for viaduct pillars (columns) - Google Patents
Method for producing submerged foundations, particularly for viaduct pillars (columns) Download PDFInfo
- Publication number
- FR2659677A1 FR2659677A1 FR9003403A FR9003403A FR2659677A1 FR 2659677 A1 FR2659677 A1 FR 2659677A1 FR 9003403 A FR9003403 A FR 9003403A FR 9003403 A FR9003403 A FR 9003403A FR 2659677 A1 FR2659677 A1 FR 2659677A1
- Authority
- FR
- France
- Prior art keywords
- plug
- piles
- concrete
- viaduct
- columns
- 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
Links
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
- E02D27/52—Submerged foundations, i.e. submerged in open water
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
- E02D27/16—Foundations formed of separate piles
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/20—Caisson foundations combined with pile foundations
-
- 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
- E02D27/50—Anchored foundations
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/10—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure
- E02D31/12—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure against upward hydraulic pressure
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Bridges Or Land Bridges (AREA)
- Foundations (AREA)
Abstract
Description
L'invention concerne un procédé de réalisation de fondations immergées, notamment pour piles de viaduc, et plus particulièrement un tel procédé dans lequel on met en place un bouchon en béton au fond d'un terrassement et on réalise des pieux de soutènement sous ledit bouchon. The invention relates to a method for making submerged foundations, in particular for viaduct piles, and more particularly to such a method in which a concrete plug is placed at the bottom of an earthwork and support piles are made under said plug. .
Le bouchon en béton est ensuite utilisé comme assise pour l'édification d'une construction, par exemple pour la semelle d'une pile de viaduc. The concrete plug is then used as a base for the construction of a construction, for example for the sole of a pile of viaducts.
Afin de compenser la pression hydrostatique qui s'exerce de bas en haut sur le bouchon de béton lorsque ce dernier est mis à l'air libre, il est nécessaire dans les procédés connus, d'une part de prévoir un bouchon de masse importante et d'autre part, de disposer sous le bouchon une couche drainante permettant le pompage de l'eau. In order to compensate for the hydrostatic pressure which is exerted from the bottom up on the concrete plug when the latter is put in the open air, it is necessary in the known processes, on the one hand to provide a plug with a large mass and on the other hand, to have a draining layer under the cap allowing the pumping of water.
La présente invention vise à pallier ces inconvénients en fournissant un procédé permettant de diminuer le volume du bouchon en béton et d'éliminer la couche drainante. The present invention aims to overcome these drawbacks by providing a method for reducing the volume of the concrete plug and eliminating the draining layer.
A cet effet, l'invention a pour objet un procédé de réalisation de fondations immergées, notamment pour piles de viaduc, dans lequel on met en place un bouchon en béton au fond d'un terrassement et on réalise des pieux de soutènement sous ledit bouchon, caractérisé par le fait que l'on réalise la tête des pieux dans l'épaisseur du bouchon de béton et que l'on donne auxdites tetes des pieux une forme s'élargissant vers le haut, notamment une forme tronconique. To this end, the subject of the invention is a process for producing submerged foundations, in particular for viaduct piles, in which a concrete plug is put in place at the bottom of an earthwork and support piles are made under said plug. , characterized by the fact that the pile heads are made in the thickness of the concrete plug and that said pile heads are given a shape widening upwards, in particular a frustoconical shape.
Le bouchon en béton est ainsi fermement ancré au terrain sous-jacent par l'intermédiaire des pieux dont les tetes, du fait de leur forme particulière, empechent tout déplacement du bouchon vers le haut, les forces hydrostatiques étant reprises au niveau du corps des pieux. The concrete plug is thus firmly anchored to the underlying ground by means of the piles whose heads, due to their particular shape, prevent any displacement of the plug upwards, the hydrostatic forces being taken up at the pile body .
Il est ainsi possible de prévoir des bouchons en béton de moindre épaisseur et de mettre en place ces bouchons directement à la surface du fond du terrassement sans interposition d'une couche de drainage. It is thus possible to provide concrete plugs of lesser thickness and to place these plugs directly on the bottom surface of the earthwork without the interposition of a drainage layer.
On décrira maintenant à titre d'exemple non limitatif un mode de réalisation particulier de l'invention en référence aux dessins schématiques annexés dans lesquels les figures l à 6 représentent les différentes phases de la mise en oeuvre d'un procédé selon l'invention appliqué à la construction d'une pile de viaduc. A particular embodiment of the invention will now be described by way of nonlimiting example with reference to the appended schematic drawings in which FIGS. 1 to 6 represent the different phases of the implementation of a method according to the invention applied building a viaduct pile.
La figure l représente un batardeau réalisé de façon connue en battant des palplanches 1 dans le fond 2 d'une étendue d'eau 3, puis en creusant par tout moyen convenable entre ces palplanches pour former un terrassement 4 jusqu'à la cote désirée 5. t
Comme montré à la figure 2, on met ensuite en place sur le fond 5 du terrassement 4 des gaines coniques 6 évasées vers le haut à l'emplacement des pieux qui seront réalisés ultérieurement.FIG. 1 represents a cofferdam produced in a known manner by beating sheet piles 1 in the bottom 2 of a body of water 3, then by digging by any suitable means between these sheet piles to form an earthworks 4 to the desired level 5 . t
As shown in Figure 2, is then placed on the bottom 5 of the earthworks 4 conical sheaths 6 flared upwards at the location of the piles which will be made later.
On met également en place dans le batardeau un gabarit de forage représenté ici par de simples tubes 7 débouchant à leur partie inférieure dans les gaines coniques 6. A drilling jig also shown in the cofferdam is represented here by simple tubes 7 opening at their lower part in the conical sheaths 6.
On réalise alors comme montré à la figure 3 un bouchon en béton 8 directement sur le fond du terrassement, ce bouchon ayant une épaisseur sensiblement égale à la hauteur des gaines coniques 6 qui forment ainsi des réservations de forme correspondante dans le bouchon 8. A concrete plug 8 is then produced as shown in FIG. 3 directly on the bottom of the earthwork, this plug having a thickness substantially equal to the height of the conical sheaths 6 which thus form correspondingly shaped reservations in the plug 8.
Les figures 4 et 5 représentent respectivement le forage et le bétonnage des pieux sous le bouchon de béton 8. FIGS. 4 and 5 respectively represent the drilling and concreting of the piles under the concrete plug 8.
Les forages 9 s'effectuent à l'aide de tout moyen adapté à la nature du terrain en utilisant les tubes 7, comme gabarit, et par conséquent à travers les réservations formées à l'aide des gaines coniques 6. The drilling 9 is carried out using any means adapted to the nature of the ground using the tubes 7, as a template, and therefore through the reservations formed using the conical sheaths 6.
La figure 5 montre les pieux bétonbnés 10 dont les têtes il s'étendent par conséquent dans l'épaisseur du bouchon de béton 8, ces tetes ayant les formes définies par les réservations décrites ci-dessus et s'élargissant par conséquent vers le haut. Le bouchon de béton 8 se trouve ainsi en quelque sorte "cloué" au fond du terrassement, ce qui lui permet de résister aux forces hydrostatiques sans qu'il soit pour autant d'un volume excessif et sans qu'il soit prévu de drainage en-dessous de ce bouchon. FIG. 5 shows the concrete piles 10 whose heads therefore extend in the thickness of the concrete plug 8, these heads having the shapes defined by the reservations described above and consequently widening upwards. The concrete plug 8 is thus in a way "nailed" to the bottom of the earthworks, which allows it to withstand hydrostatic forces without being excessively large and without being provided with drainage. - below this cap.
On peut alors retirer les tubes 7 et épuiser le batardeau, c'est-à-dire le vider de l'eau qu'il contient. We can then remove the tubes 7 and exhaust the cofferdam, that is to say, empty the water it contains.
On réalise ensuite de façon connue comme montré à la figure 6, la semelle 12 sur le bouchon de béton 8 et la pile 13 du viaduc. Then carried out in a known manner as shown in Figure 6, the sole 12 on the concrete plug 8 and the pier 13 of the viaduct.
On peut enfin sectionner les palplanches 1 au niveau de la face supérieure de la semelle 12. Finally, the sheet piles 1 can be sectioned at the upper face of the flange 12.
Diverses variantes et modifications peuvent bien entendu etre apportées à la description qui précède sans sortir pour autant ni du cadre ni de l'esprit de l'invention. Various variants and modifications can of course be made to the above description without departing from the scope or the spirit of the invention.
C'est ainsi en particulier que les têtes des pieux pourraient avoir une autre forme autre que conique, l'essentiel étant leur évasement vers le haut de manière à maintenir le bouchon de béton. Thus, in particular, the pile heads could have another shape other than conical, the main thing being their widening upwards so as to maintain the concrete plug.
De même, l'invention pourrait etre appliquée à la réalisation d'autres constructions que des piles de viaduc. Similarly, the invention could be applied to the production of other constructions than viaduct piles.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9003403A FR2659677B1 (en) | 1990-03-16 | 1990-03-16 | PROCESS FOR MAKING SUBMERSIBLE FOUNDATIONS, ESPECIALLY FOR VIADUC PILES. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9003403A FR2659677B1 (en) | 1990-03-16 | 1990-03-16 | PROCESS FOR MAKING SUBMERSIBLE FOUNDATIONS, ESPECIALLY FOR VIADUC PILES. |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2659677A1 true FR2659677A1 (en) | 1991-09-20 |
FR2659677B1 FR2659677B1 (en) | 1992-07-10 |
Family
ID=9394829
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR9003403A Expired - Fee Related FR2659677B1 (en) | 1990-03-16 | 1990-03-16 | PROCESS FOR MAKING SUBMERSIBLE FOUNDATIONS, ESPECIALLY FOR VIADUC PILES. |
Country Status (1)
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FR (1) | FR2659677B1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL1026056C2 (en) * | 2004-04-27 | 2005-10-31 | Franki Grondtechnieken B V | Anchoring underwater concrete floor. |
NL2006974C2 (en) * | 2011-06-21 | 2012-12-28 | Univ Delft Tech | Underwater floor connector. |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104790410B (en) * | 2015-05-12 | 2016-05-25 | 河南科技大学 | A kind of Support of Foundation Pit Excavation method that is applicable to shallow water mud river course |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR992257A (en) * | 1944-06-06 | 1951-10-16 | Travaux Souterrains | Process for making concrete slabs and rafts subjected to hydrostatic pressure |
FR1316341A (en) * | 1962-02-28 | 1963-01-25 | Process intended for the construction of the foundations of structures below the level of the liquid table in a dry excavation | |
DE2354172A1 (en) * | 1973-10-30 | 1975-05-15 | Brueckner Grundbau Gmbh | Anchoring for preventing buoyancy lift of structures - uses temporary tensioning members operated above ground water level |
-
1990
- 1990-03-16 FR FR9003403A patent/FR2659677B1/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR992257A (en) * | 1944-06-06 | 1951-10-16 | Travaux Souterrains | Process for making concrete slabs and rafts subjected to hydrostatic pressure |
FR1316341A (en) * | 1962-02-28 | 1963-01-25 | Process intended for the construction of the foundations of structures below the level of the liquid table in a dry excavation | |
DE2354172A1 (en) * | 1973-10-30 | 1975-05-15 | Brueckner Grundbau Gmbh | Anchoring for preventing buoyancy lift of structures - uses temporary tensioning members operated above ground water level |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL1026056C2 (en) * | 2004-04-27 | 2005-10-31 | Franki Grondtechnieken B V | Anchoring underwater concrete floor. |
NL2006974C2 (en) * | 2011-06-21 | 2012-12-28 | Univ Delft Tech | Underwater floor connector. |
Also Published As
Publication number | Publication date |
---|---|
FR2659677B1 (en) | 1992-07-10 |
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TP | Transmission of property | ||
ST | Notification of lapse |