EP2256251A2 - Pieu et jonction de pieu - Google Patents

Pieu et jonction de pieu Download PDF

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Publication number
EP2256251A2
EP2256251A2 EP10164077A EP10164077A EP2256251A2 EP 2256251 A2 EP2256251 A2 EP 2256251A2 EP 10164077 A EP10164077 A EP 10164077A EP 10164077 A EP10164077 A EP 10164077A EP 2256251 A2 EP2256251 A2 EP 2256251A2
Authority
EP
European Patent Office
Prior art keywords
sleeve
pipe part
pile
plane
counter
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
EP10164077A
Other languages
German (de)
English (en)
Other versions
EP2256251A3 (fr
EP2256251B1 (fr
Inventor
Ilkka Valkonen
Hannu Vesamäki
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.)
Rautaruukki Oyj
Original Assignee
Rautaruukki Oyj
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 Rautaruukki Oyj filed Critical Rautaruukki Oyj
Publication of EP2256251A2 publication Critical patent/EP2256251A2/fr
Publication of EP2256251A3 publication Critical patent/EP2256251A3/fr
Application granted granted Critical
Publication of EP2256251B1 publication Critical patent/EP2256251B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22—Piles
    • E02D5/52—Piles composed of separable parts, e.g. telescopic tubes ; Piles composed of segments
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22—Piles
    • E02D5/52—Piles composed of separable parts, e.g. telescopic tubes ; Piles composed of segments
    • E02D5/523—Piles composed of separable parts, e.g. telescopic tubes ; Piles composed of segments composed of segments
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22—Piles
    • E02D5/24—Prefabricated piles
    • E02D5/28—Prefabricated piles made of steel or other metals

Definitions

  • the invention relates to a continuous pile to be mounted in the ground and/or in rock, and particularly to a pile according to the preamble of claim 1, which pile is formed of two or more metal pipe parts joined to each other successively and comprising an external thread provided at at least one end, the pile further comprising one or more sleeves for joining two successive pipe parts to each other, which sleeve comprises a first end and a second end as well as a first internal thread in the vicinity of the first end and a second internal thread in the vicinity of the second end.
  • the invention further relates to a pile joint and particularly to a pile joint according to the preamble of claim 15 for joining two successive metal pipe parts to each other, the pile joint comprising a first pipe part provided with an external thread at its end or in the vicinity thereof; and a second pipe part provided with an external thread at its end or in the vicinity thereof; as well as a sleeve provided with a first internal thread in the vicinity of a first end for engaging with the external thread of the first pipe part and a second internal thread in the vicinity of a second end for engaging with the external thread of the second pipe part to join the first and the second pipe part to each other.
  • the piles In substructure construction, the piles must withstand the stresses caused by the mounting, i.e. penetration into the ground and/or rock, and meet the requirements of the building regulations, for example, with regard to the compression and tensile strengths, bending stiffness and torque.
  • the piles may be subjected to great vertical and/or horizontal loads during the mounting or after it. Bending is caused to the piles by eccentric load and/or curvature of the piles.
  • the required total extent of the piles is often so great that the piles must be made of two or more pile parts joined to each other successively. In extended piles like this, particularly high requirements are imposed on the strength and stiffness of the joints.
  • piles may, if required, be extended by welding but it is slow to carry out the welding in construction site conditions.
  • threaded sleeves with which piles can be extended There are also threaded sleeves with which piles can be extended.
  • the present known conical threaded sleeves transmit forces reasonably well but in certain cases their bending stiffness does not meet the requirements imposed on the stiffness of a joint, and thus known sleeves cannot be used for extending piles in all conditions.
  • Splice sleeves attached to the inside of a pile pipe prevent removal of the drilling means from the inside of the pile after the mounting, which is an uneconomical solution because drilling means are expensive.
  • An object of the invention is to provide a pile and a pile joint in such a way that the above problems can be solved.
  • the object of the invention is achieved with a pile according to the characterizing part of claim 1, characterized in that the sleeve comprises at its first and second end on the inner surface of the sleeve a plane-like first counter surface, and that the pipe part comprises on its outer surface a second plane-like counter surface, the first and the second plane-like counter surface being arranged to become positioned tightly against each other when the pipe part is in place inside the sleeve.
  • the object of the invention is further achieved with a pile joint according to the characterizing part of claim 15, characterized in that the sleeve comprises at its first and second end on the inner surface of the sleeve a plane-like first counter surface arranged to become positioned tightly against the outer surface of the pipe part when the pipe part is in place inside the sleeve.
  • the present invention is based on providing a pile and a pile joint which comprises a sleeve for receiving and joining to each other two pile pipe parts to be mounted successively.
  • the sleeve comprises a first and a second internal thread provided in the vicinity of the sleeve ends.
  • the pipe parts are provided at their ends or in the vicinity of the ends with external threads matching the internal threads of the sleeve part in such a way that the pipe parts can be joined to each other by means of the sleeve by fastening the pipe parts to the sleeve by means of said threads.
  • the sleeve is further provided on its inner surface with first counter surfaces provided at the ends of the sleeve in such a way that they extend towards the centre of the sleeve in the direction of the sleeve axis.
  • the counter surfaces are arranged to become positioned against the outer surface of the pipe part when the pipe part is in place inside the sleeve.
  • the pipe part may also be provided with second plane-like counter surfaces in such a way that the first counter surfaces of the sleeve part become positioned tightly against the second counter surfaces of the pipe part when the pipe part is in place in the sleeve.
  • Plane-like counter surfaces refer to substantially even and smooth surfaces which do not comprise any threads.
  • the first counter surfaces provided in the sleeve extend as an extension of the internal threads of the sleeve to the inner surface of the sleeve, to the sleeve ends.
  • An advantage of the present invention is that these counter surfaces provided on the inner surface of the sleeve at the sleeve ends and becoming positioned tightly against the outer surface of the pipe part or against special counter surfaces provided on the outer surface of the pipe significantly improve the stiffness, particularly bending stiffness, of the pile joint and thus of the whole pile formed of pipe parts.
  • the pile and pile joint according to the invention withstand the loads directed at the piles and pile joint during the use and the mounting and meet the requirements imposed on the stiffness of a pile joint.
  • the solution according to the invention allows the drilling means to be removed after the mounting of the pile.
  • Figure 1 shows a pile joint according to the prior art.
  • the pile is formed of two or more metal pipe parts 30, 32 joined to each other successively and by means of an external sleeve 34.
  • the ends of the pipe parts 30, 32 are provided with external threads, the sleeve being provided with internal threads matching them.
  • the pipe parts are screwed on the sleeve by its opposite ends in such a way that the face areas of the ends of the pipe parts become positioned against each other.
  • Figure 2 shows an external sleeve 34 according to the prior art for a pile joint, the sleeve comprising a first and a second thread or threaded portion 36, 38 which extend, in the direction of the centre line or axis 39 of the sleeve 34, substantially from the centre of the sleeve 34 or from the vicinity thereof to the ends 33, 35 of the sleeve.
  • both the threads 36, 38 of the sleeve 34 and the threads of the pipe parts 30, 32 are provided as taper threads.
  • the diameter of the taper thread of the pipe parts 30, 32 decreases towards the end of the pipe part 30, 32 and, correspondingly, the diameter of the threads of the sleeve 34 increases towards the ends 33, 35 of the sleeve 34.
  • FIG 3 shows schematically a pile 2 according to the present invention, in which successive pipe parts 4a, 4b, 4c, 4d and 4d are joined to each other by means of a pile joint or a splice joint 1.
  • the pile 2 is mounted in the ground M and/or in rock K in such a way that the successive pipe parts 4a, 4b, 4c, 4d, 4e of the pile 2, such as of a bored pile, which are typically and preferably made of steel, are joined to each other with a pile joint 1.
  • the pipe parts 4a, 4b, 4c, 4d, 4e are preferably pipes, whereby drilling can be carried out through them, but the pipe parts 4a, 4b, 4c, 4d, 4e may also be other types of pile parts.
  • the pile joint 1 primarily comprises a straight sleeve 3 made of metal, typically and preferably of steel, on the inside of which there are the ends of two successive pipe parts 4a, 4b, 4c, 4d, 4e serving as extensions for each other.
  • the bored pile 2 may be formed of at least two successive metal pipe parts 4a, 4b, 4c, 4d, 4e with threaded ends, the ends being positioned in the sleeve 3.
  • Figure 4 shows the pile joint 1 according to the invention in greater detail while Figure 5 shows the sleeve 3 and the end of the pipe part 4b in greater detail.
  • the first and the second pipe part 4a and 4b are mounted on the sleeve 3 in such a way that the face areas 17 and 18 of the ends 15 and 16 of the pipe parts 4a and 4b are against each other in accordance with Figure 4 , whereby the compression forces in the pipe parts 4a, 4b, 4c, 4d, 4e are transmitted via the face areas 17 and 18.
  • the sleeve 3 according to the invention has two sets of female threads 5a and 5b, provided as internal threads or threaded portions on the inner surface of the sleeve 3.
  • the threads 5a and 5b are taper threads which widen, i.e. the diameter of the threaded portion increases, towards ends 7a, 7b of the sleeve 3.
  • the taper threads 5a, 5b start from the ends 7a, 7b of the sleeve and taper towards the centre of the sleeve, as shown in Figure 5 .
  • the taper threads 5a, 5b allow the greatest wall thickness of the pipe part 4a, 4b, 4c, 4e to be positioned at the end 7a, 7b of the sleeve 3, at which a great load is directed.
  • the pipe parts 4a, 4b are further provided, in the vicinity of the ends 15, 16 thereof, with an external thread 6.
  • An external thread 6 is preferably a taper thread tapering towards the end 15, 16 of the pipe part 4a, 4b. In other words, the diameter of the threaded portion provided by the external thread 6 is reduced towards the end 15, 16 of the pipe part 4a, 4b.
  • the sleeve 3 is provided with first counter surfaces X1 positioned on the inner surface of the sleeve 3 at the first and the second end 7a, 7b of the sleeve.
  • the counter surfaces X1 are substantially plane-like or smooth surfaces having neither machined features that would deviate from the surface plane nor any threads.
  • the first plane-like counter surfaces X1 are provided to extend, on the inner surface of the sleeve 3, from the first and the second end 7a, 7b of the sleeve 3 towards the centre of the sleeve 3 in the direction of an axis 9 of the sleeve 3.
  • first and the second internal thread 5a, 5b are provided to extend, on the inner surface of the sleeve 3, from the first plane-like counter surfaces X1 towards the centre of the sleeve 3 in the direction of the axis of the sleeve 3, i.e. as an extension of the counter surfaces X1 towards the end 7a, 7b of the sleeve 3.
  • the outer surface of the pipe part 4a, 4b is provided with a second counter surface X2 in such a way that the first plane-like counter surface of the sleeve 3 and the second plane-like counter-surface X1, X2 of the pipe part 4a, 4b are arranged to become positioned tightly against each other when the pipe part 4a, 4b is in place inside the sleeve 3, at the position according to Figure 4 .
  • the second plane-like counter surface X2 is provided to extend, on the outer surface of the pipe part 4a, 4b, in the direction of the axis 9 of the pipe part 4a, 4b.
  • the external thread 6 of the pipe part 4a, 4b is provided to extend, on the outer surface of the pipe part 4a, 4b, from the second plane-like counter surface X2 in the direction of the axis of the pipe part 4a, 4b towards the end 15, 16 of the pipe part; in other words, the external thread 6 extends as an extension of the second counter surface X2 to the outer surface of the pipe part 4a, 4b towards the end 15, 16 of the pipe part 4a, 4b.
  • the support surfaces X1 and X2 may be support surfaces that have been machined specially and accurately.
  • the first counter surface X1 of the sleeve 3 may be provided to become positioned against the outer surface of the pipe part 4a, 4b without the outer surface of the pipe part 4a, 4b comprising any other counter surface made by separate machining. In such a case, the outer surface of the pipe part 4a, 4b forms the second counter surface X2.
  • the sleeve 3 may comprise, on its inner surface, at least one third plane-like counter surface Y1 in the direction of the axis of the sleeve 3, at the sleeve centre or in the vicinity of the centre.
  • the third plane-like counter surfaces Y1 are provided to extend, on the inner surface of the sleeve 3, in the direction of the axis of the sleeve 3 from the first and the second internal thread 5a, 5b towards the centre of the sleeve 3, i.e. as an extension of the internal threads 5a and 5b towards the centre of the sleeve 3.
  • the pipe part 4a, 4b may comprise, on its outer surface, a fourth plane-like counter surface Y2, whereby the third and the fourth plane-like counter surface Y1, Y2 are arranged to be positioned tightly against each other when the pipe part 4a, 4b is in place inside the sleeve 3.
  • This fourth plane-like counter surface Y2 is provided to extend, on the outer surface of the pipe part 4a, 4b, in the direction of the pipe part 4a, 4b from its end 15, 16 towards the centre of the pipe part 4a, 4b, i.e. as an extension of the external thread 6 towards the end of the pipe part 4a, 4b.
  • the fourth plane-like counter surface Y2 is provided to extend, on the outer surface of the pipe part 4a, 4b, from the external thread 6 to the end 15, 16 of the pipe part 4a, 4b.
  • Figure 5 shows a sleeve 3 and a pipe part 4b formed in accordance with the basic idea of the invention, where the starting and final ends of the threaded portions 5a, 5b of the sleeve 3 are provided with counter surfaces X1 and X2 which have no threads.
  • the pipe part 4b is provided with counter surfaces X2, Y2 matching the counter surfaces X1, Y1 and being preferably of the substantially same size.
  • a slot between the counter surfaces deteriorates the bending stiffness of the joint, so the counter surfaces need to be machined very accurately to match each other.
  • the counter surfaces formed in the pipe part 4b and the sleeve 3 are tightly against each other but in practice the slot must conform to the tolerance requirements of normal machining methods.
  • all counter surfaces X1, X2, Y1, Y2 or some of them may be at an angle relative to the centre line 9 of the pipe part 4a, 4b, 4c, 4d, 4e but in such a case the possible longitudinal movement allowed by the clearance of the threads or position deviation of the pipe parts 4a, 4b, 4c, 4d, 4e in the longitudinal direction of the sleeve 3 causes a slot between the counter surfaces X1, Y1, X2, Y2, whereby the bending stiffness of the joint deteriorates. Therefore, the counter surfaces X1, X2, Y1, Y2 are preferably parallel to the centre line or axis 9 of the pipe part 4a, 4b, 4c, 4d, 4e.
  • one or more pairs of counter surfaces are needed between the pipe part 4a, 4b, 4c, 4d, 4e and the sleeve 3. This is primarily implemented with the first counter surfaces X1 at the beginning of the threaded portion of the sleeve 3 of the pile joint 1 and with the second counter surfaces X2 that serve as an extension of the thread 6 of the pipe part 4a, 4b, 4c, 4d, 4e, seen from the end of the pipe part 4a, 4b. Further, if required, the pile joint is also provided with a second pair of counter surfaces Y1, Y2, as explained above.
  • the pile joint according to the invention has at least the counter surfaces X1 and X2 at the ends 7a, 7b of the sleeve 3.
  • the joint has also counter surfaces Y1 and Y2 at the centre of the sleeve of the pile joint 1.
  • the centre of the sleeve 3 is provided with a recessed bevel 11 which contributes to the accurate manufacture of the counter surfaces Y1 of the sleeve structure.
  • the sleeve comprises one or more plane-like counter surfaces in the middle of the threads 5a and 5b
  • the pipe part comprises one or more counter surfaces in the middle of the external thread 6, which counter surfaces provided in the middle of the threads 5a, 5b and 6 are arranged to become positioned against each other when the pipe part 4a, 4b, 4c, 4d, 4e is in place inside the sleeve 3.
  • the length of the counter surfaces X1, X2, Y1, Y2 in the direction of the centre line 9 of the pipe part 4a, 4b, 4c, 4d, 4e is selected on the basis of the required stiffness.
  • the length of the counter surfaces X1 at the ends of the sleeve 3 is 8 to 50 mm and preferably 10 to 30 mm.
  • the length of the counter surface Y1 at the centre of the sleeve is approximately half of the lengths of the counter surfaces X1 at the ends of the sleeve.
  • the length of the counter surfaces X1, X2 is thus greater than that of the counter surfaces Y1, Y2.
  • Diameters D3, D4 of the counter surfaces X1, X2 are, in the solution according to the invention, greater than or equal to the greatest diameters of the internal threads 5a, 5b of the sleeve 3 and, correspondingly, diameters D1, D2 of the possible counter surfaces Y1, Y2 are smaller than or equal to the smallest diameters of the threads 5a, 5b.
  • the pipe parts 4a, 4b, 4c, 4d, 4e are what are called small piles which have diameters D5 ranging from 50 to 300 mm and lengths ranging from 4 to 10 m.
  • the pile joint 1 allows the piling, i.e. pile installation 2, to be made up to dozens of metres deep by using sleeves 3.
  • the diameter D2 of the fourth counter surface Y2 of the pipe part 4a, 4b, 4c, 4d, 4e is smaller than or equal to the diameter D1 of the third counter surface Y1 of the sleeve 3, and/or the diameter D4 of the second counter surface X2 of the pipe part 4a, 4b, 4c, 4d, 4e is smaller than or equal to the diameter D3 of the first counter surface X1 of the sleeve 3.
  • the diameters D1, D2 of the third and the fourth counter surface Y1, Y2 are smaller than the diameters D3, D4 of the first and the second counter surface X1, X2.
  • M 90 kNm
  • I 1 400 mm
  • ⁇ 22 mm.
  • the bending stiffness of the pile joint provided by the first and second counter surfaces X1, X2 is five-fold compared with pile joints of the prior art.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (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)
  • Piles And Underground Anchors (AREA)
EP10164077.9A 2009-05-29 2010-05-27 Pieu et jonction de pieu Active EP2256251B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20090216A FI125990B (fi) 2009-05-29 2009-05-29 Paalu

Publications (3)

Publication Number Publication Date
EP2256251A2 true EP2256251A2 (fr) 2010-12-01
EP2256251A3 EP2256251A3 (fr) 2013-02-20
EP2256251B1 EP2256251B1 (fr) 2018-08-01

Family

ID=40680683

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10164077.9A Active EP2256251B1 (fr) 2009-05-29 2010-05-27 Pieu et jonction de pieu

Country Status (2)

Country Link
EP (1) EP2256251B1 (fr)
FI (1) FI125990B (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2983496A1 (fr) * 2011-12-06 2013-06-07 Sarl Happax Plot de fondation a visser pour constructions exterieures legeres
WO2015114218A1 (fr) * 2014-01-31 2015-08-06 Rautaruukki Oyj Élément de fondation tubulaire
EP3048202A1 (fr) 2015-01-23 2016-07-27 Scandia Steel Förvaltning AB Pieu cylindrique et un élément d'extension de pieu cylindrique
JP2020073769A (ja) * 2020-01-14 2020-05-14 日本製鉄株式会社 鋼製部材の接合構造
CN115450206A (zh) * 2022-09-01 2022-12-09 中铁四局集团有限公司南京分公司 预应力管桩连接快速定位装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1155945B (de) * 1955-05-12 1963-10-17 Dalmine Spa Rohrverschraubung fuer unter Druck stehende Fluessigkeiten oder Gase
IT1176371B (it) * 1984-06-29 1987-08-18 Innocenti Santeustacchio Spa Giunto per il collegamento testa a testa di tubi metallici,in particolare per palificazioni marine
FI3931U1 (fi) * 1998-12-18 1999-04-22 Rautaruukki Oyj Porapaalun jatkoliitos
GB9902027D0 (en) * 1999-01-29 1999-03-17 Specialised Petroleum Serv Ltd Torque limiting tool
US7404444B2 (en) * 2002-09-20 2008-07-29 Enventure Global Technology Protective sleeve for expandable tubulars

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2983496A1 (fr) * 2011-12-06 2013-06-07 Sarl Happax Plot de fondation a visser pour constructions exterieures legeres
EP2602405A1 (fr) * 2011-12-06 2013-06-12 Sarl Happax Ensemble de plot de fondation à visser pour constructions extérieures légères
WO2015114218A1 (fr) * 2014-01-31 2015-08-06 Rautaruukki Oyj Élément de fondation tubulaire
EP3048202A1 (fr) 2015-01-23 2016-07-27 Scandia Steel Förvaltning AB Pieu cylindrique et un élément d'extension de pieu cylindrique
JP2020073769A (ja) * 2020-01-14 2020-05-14 日本製鉄株式会社 鋼製部材の接合構造
CN115450206A (zh) * 2022-09-01 2022-12-09 中铁四局集团有限公司南京分公司 预应力管桩连接快速定位装置
CN115450206B (zh) * 2022-09-01 2023-10-13 中铁四局集团有限公司南京分公司 预应力管桩连接快速定位装置

Also Published As

Publication number Publication date
EP2256251A3 (fr) 2013-02-20
FI125990B (fi) 2016-05-13
EP2256251B1 (fr) 2018-08-01
FI20090216A0 (fi) 2009-05-29
FI20090216A (fi) 2010-11-30

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