EP2702209A2 - Pieu porteur et procédé pour établir une fondation pour un bâtiment dans l'eau - Google Patents

Pieu porteur et procédé pour établir une fondation pour un bâtiment dans l'eau

Info

Publication number
EP2702209A2
EP2702209A2 EP12715845.9A EP12715845A EP2702209A2 EP 2702209 A2 EP2702209 A2 EP 2702209A2 EP 12715845 A EP12715845 A EP 12715845A EP 2702209 A2 EP2702209 A2 EP 2702209A2
Authority
EP
European Patent Office
Prior art keywords
pile
foundation
outer diameter
water
overcut
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
EP12715845.9A
Other languages
German (de)
English (en)
Other versions
EP2702209B1 (fr
Inventor
Marc Peters
Thorsten Reich
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.)
Herrenknecht AG
Original Assignee
Herrenknecht AG
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 Herrenknecht AG filed Critical Herrenknecht AG
Publication of EP2702209A2 publication Critical patent/EP2702209A2/fr
Application granted granted Critical
Publication of EP2702209B1 publication Critical patent/EP2702209B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • E02D27/42—Foundations for poles, masts or chimneys
    • 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
    • E02D27/42—Foundations for poles, masts or chimneys
    • E02D27/425—Foundations for poles, masts or chimneys specially adapted for wind motors masts

Definitions

  • the invention relates to a foundation pile for producing a foundation for a structure in the water, preferably offshore, and a method for producing a foundation for a structure in the water, especially offshore.
  • foundation piles are introduced into the soil.
  • the opening into which the pile is lowered in particular by the use of drilling technology created (DE 10 2009 023 466 A1). It is necessary that the bore has a larger diameter than the foundation pile. This difference is called an overcut. This is done to reduce the Absinkwiderstand when introducing the foundation pile in the opening.
  • the overcut is filled during drilling with a suspension to support the borehole wall surrounding the bore with a suspension of, for example, bentonite.
  • CONFIRMATION COPY arising from wind and water currents as well as waves. This results in a moment load acting on the foundation pile. This moment load is taken into account in the design of the wall thickness of the pile. The largest wall thickness is provided at the location of the largest bending moment load. In the prior art, this is taken into account such that piles are produced, which have a constant outer diameter and variable inner diameter.
  • the object of the invention is to provide a foundation pile, with which it is possible to avoid that the overlying suspension does not escape into the water.
  • the foundation pile is to be optimized for the use of drilling technology within the pile.
  • the object is achieved in that a foundation pile is provided with a section located in the ground, in which the outer diameter increases towards the bottom of the water, and the outer diameter is designed as a function of the bending moment profile acting on the pile.
  • the inner diameter is constant or conically tapering towards the bottom of the water. This is advantageous in terms of the drilling technique which is lowered into the foundation pile, since the prevailing projections of the inside diameter are avoided depending on the wall thickness resulting from the bending moment curve, which results in a simpler use of the drilling technique.
  • the outer diameter is> 3 m.
  • a single foundation can be provided, for example, for a tower of a wind turbine by a pile.
  • the Diameter can be adjusted so that the pipe sections of the tower of the wind turbine can be placed directly on the pipe sections of the foundation pile.
  • the pile consists of pipe sections, preferably made of concrete or steel.
  • the maximum outer diameter depending on the bending moment curve of the foundation pile already 3 m to 8 m, preferably 5 m, below the water bottom is achieved.
  • the annular gap on the seabed is closed by the widening of the outer diameter and the adjacent soil is already compacted. This gives the pile an immediate stabilization and the vertical alignment is maintained even with the already existing horizontal load attack by currents.
  • the overcut is sealed in this way, so that nothing can escape into the open water during pressing and hardening with cement from the overcut.
  • a further teaching of the invention provides that a tube shot is arranged in the region of the water bottom, which closes an overcut formed during drilling of the opening / bore into which the pile is lowered, the tube shot preferably having a conically increasing outside diameter.
  • the object of the invention is achieved by a tower with a foundation of a previously described foundation pile, wherein the tower is made of pipe sections, which have an outer diameter depending on the bending moment pattern acting on the respective tube shot.
  • the object of the invention is achieved by a method for producing a foundation for a structure in the water, especially offshore, in which a pile into the ground in an opening is lowered, wherein the opening is made in the soil by means of drilling technology, an overcut is produced during drilling, so that the opening is larger than the pile and the overcut is filled with a suspension, wherein the pile is introduced with an increasing outer diameter in the opening and the outer diameter increases towards the bottom of the water.
  • the overcut is sealed in the upper area, so that when pressing and with cement and when curing the cement no suspension can escape in the overcut into the open water.
  • Another teaching of the invention provides that the outer diameter increases until the diameter of the overcut is reached.
  • drilling takes place in full section or partial section, wherein this is preferably carried out unmanned.
  • Fig. 3 shows a first embodiment of a foundation pile according to the invention
  • FIG. 4 shows a second embodiment of a foundation pile according to the invention.
  • FIG. 1 shows a schematic foundation pile 10, which is introduced into a waterbed 11.
  • the foundation pile 10 consists of an in-ground section 12, one located in the water 13 Section 14, and an airborne section 15.
  • a bending moment curve 16 is shown resulting from the loads from the flow 17 and the wind 18 on the pile 10.
  • Fig. 2 shows a foundation pile 10 according to the prior art. This has a constant outer diameter 19 and a variable inner diameter 20.
  • the bore 21 has an overcut 22 which is arranged between outer wall 23 of the foundation pile 10 and borehole wall 24. In the region of the outlet region 25 in the region of the body of the water 26, as shown in Fig. 2, the overcut 22 is open to the water 13.
  • the foundation pile 10 is composed of pipe sections 27.
  • the outer diameter 19 of the pipe sections 27 is constant.
  • the wall thickness 28 is adapted to the bending moment curve 16. This results in a changing inner diameter 20.
  • FIG. 3 shows a first embodiment of a foundation pile 10 according to the invention.
  • the foundation pile 10 is likewise constructed from pipe sections 27 which have a constant inner diameter 20.
  • the wall thickness 28 is also adapted to the bending moment curve 16, but in such a way that the outer diameter 19 is carried out differently. The changes in the outer diameter 19 can be done in steps or continuously.
  • the foundation pile is inserted into the bore 21. Between outer wall 23 and borehole wall 24 is also an overcut 22 which is filled with suspension. In the transition region 29, the outer diameter 19 of the tube section 27 is designed so that the outer diameter 19 is greater than the overcut 22.
  • the overcut 22 is sealed and displaced the suspension in the interior 30 of the foundation pile 10 into it.
  • the waterbed 11 is compressed in this area and the foundation pile 10 is vertically stabilized.
  • FIG. 4 shows a second embodiment according to the invention of a foundation pile 10.
  • This differs from the first embodiment in that in the transition area 29 the overcut 22 is wider, For example, by the soil condition of the water bottom 11, so that the overcut 22 there is greater than the expected after bending moment curve outer diameter 19 of the pipe section located there 27. For this reason, the outer diameter of the pipe section is additionally increased in this area, so that a trespassing sealing portion 31 is present , This sealing portion 31 causes the closure of the overcut 22 in the transition region.
  • the sealing portion 31 can be effected either by an increase in the wall thickness 28 of this tube section 27 or by providing an additional sealing component that is placed on the outer wall 23 of the tube section 27.

Landscapes

  • 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)
  • Foundations (AREA)
  • Wind Motors (AREA)
  • Piles And Underground Anchors (AREA)

Abstract

L'invention porte sur un pieu porteur pour l'établissement d'une fondation pour un bâtiment dans l'eau, en particulier en mer, comprenant un tronçon (12) qui se trouve dans le sol(4), et pour lequel le diamètre extérieur (19) croît en direction du fond de la nappe d'eau (26) et le diamètre extérieur (19) est calculé en fonction du profil du moment de flexion (16) qui agit sur le pieu (10). L'invention porte également sur un procédé d'établissement d'une fondation pour un bâtiment dans l'eau, de préférence en mer, dans lequel un pieu (10) planté dans le sol (11) est enfoncé dans une ouverture (21), l'ouverture (21) formée dans le sol (11) étant creusée par une technique de forage, un excédent de coupe (22) est créé lors du forage de sorte que l'ouverture (21) est plus grande que le pieu (10), et l'excédent de coupe (22) est rempli d'une suspension, le pieu (10) qui présente un diamètre extérieur croissant (19) étant enfoncé dans l'ouverture (21) et le diamètre extérieur (19) s'accroissant en direction du fond de la nappe d'eau (26).
EP12715845.9A 2011-04-26 2012-04-16 Pieu de fondation Not-in-force EP2702209B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202011005583U DE202011005583U1 (de) 2011-04-26 2011-04-26 Gründungspfahl zum Herstellen einer Gründung für ein Bauwerk im Wasser
PCT/EP2012/001636 WO2012146350A2 (fr) 2011-04-26 2012-04-16 Pieu porteur et procédé pour établir une fondation pour un bâtiment dans l'eau

Publications (2)

Publication Number Publication Date
EP2702209A2 true EP2702209A2 (fr) 2014-03-05
EP2702209B1 EP2702209B1 (fr) 2015-09-09

Family

ID=45998232

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12715845.9A Not-in-force EP2702209B1 (fr) 2011-04-26 2012-04-16 Pieu de fondation

Country Status (3)

Country Link
EP (1) EP2702209B1 (fr)
DE (1) DE202011005583U1 (fr)
WO (1) WO2012146350A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4105386A1 (fr) * 2021-06-17 2022-12-21 General Technologies Corp. Système de support ayant des fondations de pieux/ancrages façonnées et son procédé de formation

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012014832A1 (de) * 2012-07-27 2014-01-30 Rwe Power Aktiengesellschaft Gründungspfahl für Offshore-Bauwerke sowie Verfahren zur Hestellung eines Gründungspfahls für Offshore-Bauwerke
EP2930275B1 (fr) * 2014-04-08 2017-12-20 Herrenknecht AG Système et procédé de fabrication d'une fondation pour un ouvrage situé dans l'eau
DE102019133132A1 (de) * 2019-12-05 2021-06-10 Rwe Renewables Gmbh Windkraftanlagengründungsstruktur sowie Verfahren zur Herstellung einer Windkraftanlagengründungsstruktur
EP4273326A1 (fr) 2022-05-06 2023-11-08 Optum Computational Engineering ApS Fondation d'une superstructure, en particulier d'une éolienne, éolienne dotée de la fondation, procédé de formation d'une fondation d'éolienne

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008008760A1 (de) * 2008-02-12 2009-08-13 Schopf, Walter, Dipl.-Ing. Einrichtung zur Verminderung der Strömungsbelastung an Türmen von Offshore-Windenergieanlagen
DE102009020517B3 (de) * 2009-05-08 2010-10-21 Herrenknecht Ag Verfahren zum Errichten eines unterirdischen Bauwerks
DE102009023466B4 (de) 2009-06-02 2012-09-13 Herrenknecht Ag Verfahren und Vorrichtung zum Erstellen eines Unterwasserfundaments eines Bauwerks

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2012146350A2 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4105386A1 (fr) * 2021-06-17 2022-12-21 General Technologies Corp. Système de support ayant des fondations de pieux/ancrages façonnées et son procédé de formation
EP4345214A3 (fr) * 2021-06-17 2024-05-01 Sharp Pulse Corp. Système de support ayant des fondations d'ancrage de pieu mises en forme et son procédé de formation

Also Published As

Publication number Publication date
EP2702209B1 (fr) 2015-09-09
DE202011005583U1 (de) 2013-09-30
WO2012146350A3 (fr) 2012-12-20
WO2012146350A2 (fr) 2012-11-01

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