EP3048202B1 - Zylindrischer pfahl und ausweitungselement des zylindrischen pfahls - Google Patents

Zylindrischer pfahl und ausweitungselement des zylindrischen pfahls Download PDF

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Publication number
EP3048202B1
EP3048202B1 EP16150613.4A EP16150613A EP3048202B1 EP 3048202 B1 EP3048202 B1 EP 3048202B1 EP 16150613 A EP16150613 A EP 16150613A EP 3048202 B1 EP3048202 B1 EP 3048202B1
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EP
European Patent Office
Prior art keywords
pile
thread
sleeve
pile element
sleeve element
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.)
Active
Application number
EP16150613.4A
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English (en)
French (fr)
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EP3048202A1 (de
Inventor
Thorulf HAMFORS
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Scandia Steel Forvaltning AB
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Scandia Steel Forvaltning AB
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Publication of EP3048202A1 publication Critical patent/EP3048202A1/de
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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
    • E02D5/24—Prefabricated piles
    • E02D5/28—Prefabricated piles made of steel or other metals
    • E02D5/285—Prefabricated piles made of steel or other metals tubular, e.g. prefabricated from sheet pile elements
    • 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
    • E02D5/52—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
    • E02D5/526—Connection means between pile segments

Definitions

  • the present invention relates to cylindrical construction piles. Specifically, the present invention relates to such piles to be used as reinforcing or supporting construction elements in large and/or heavy structures, such as buildings, bridges and the like. In particular, the present invention relates to threaded such piles, which threads have certain characteristics.
  • piles are for instance used to transfer gravitational forces from the weight of heavy structures down into the ground, to stable bedrock.
  • piles are arranged in bore holes in the ground, which holes may be quite long, such as at least tens of meters.
  • corresponding piles also need to be long, which is typically achieved by providing a number of pile elements that may be attached one to the other to provide a single, long pile.
  • weld joints One conventional way of achieving this is by using weld joints.
  • Another is to use threaded screw joints. Both these methods achieve a connected, long pile, formed by several pile elements arranged one after the other in a permanently stable way. Screw joints allow for a quicker installation than weld joints.
  • a "pin end” is an externally threaded male member, arranged to engage and cooperate with a “box end”, which is an internally threaded, female member.
  • each pile element comprises two opposite pin ends, and individual pile elements are attached one to the other, in their longitudinal direction, using a “sleeve”, to form a connected, long pile.
  • a “sleeve” is a cylindrical part comprising two opposite box ends, each arranged to engage with a corresponding pin end of a respective pile element.
  • the present invention solves this and other problems.
  • it solves the problem by proposing a thread of particular configuration in a cone-shaped thread joint for such pile- and sleeve elements.
  • the invention relates to a cylindrical pile element with a longitudinal axis, which pile element is arranged for use as a reinforcing or supporting construction element, which pile element has a cross-sectional cylinder diameter of at least 70 mm, which pile element is arranged to be lengthwise extendable using a cylindrical sleeve element, using a male pile element thread comprised in a pin end of the said pile element and arranged to engage with a corresponding female sleeve element thread comprised in the said sleeve element at a respective box end of the sleeve element, which pile element thread is generally tapered from a relatively wider part towards a relatively narrower part closer to the said pin end, which pile element is characterised in that the side flank of the pile element thread facing towards the pin end is inclined between 15° and 25° in relation to a plane which is perpendicular to the longitudinal axis of the pile element, and in that the side flank of the pile element thread facing away from the pin end is inclined between 6° and 8° in relation to
  • the invention relates to a cylindrical pile sleeve element with a longitudinal axis, which sleeve element is arranged for use as a reinforcing or supporting construction element, which sleeve element has a cross-sectional cylinder diameter of at least 80 mm, which sleeve element is arranged for extending lengthwise a cylindrical pile element according to any one of the preceding claims, using a female sleeve element thread comprised in the sleeve element at a respective box end of the sleeve element, and arranged to engage with the male pile element thread of said pile element, which sleeve element thread is generally tapered from a relatively narrower part towards a relatively wider part closer to the said box end, which sleeve element is characterised in that the side flank of the sleeve element thread facing away from the box end is inclined between 15° and 25° in relation to a plane which is perpendicular to the longitudinal axis of the sleeve element, and in that
  • Some figures comprise a "1” or “2" inside a circle. This denotes a pile element “1” or a sleeve element “2”, respectively.
  • FIG. 9 illustrates the terminology used herein.
  • a simplified and not-to-scale detail section view of the respective wall of a cylindrical pile element 10 and a cylindrical sleeve element 20 are shown. It is understood that the sleeve element 20 is arranged to fit snugly and concentrically around the pile element 10 when engaged in a made-up threaded relationship.
  • the pile element 10 comprises a pin end 11.
  • pin end may refer to either the end itself or to the part of the pile 10 near the end itself, depending on the circumstances. The corresponding is true regarding the term “box end”.
  • the pile element 10 also comprises external threads 12.
  • V denotes a longitudinal direction of the pile element 10 and the sleeve element 20 (the same in figure 10 ).
  • the sleeve element 20 comprises a box end 21, and a second box end 27 (not shown), as well as internal threads 22.
  • threads 12, 22 comprise side flanks 24, 25 separated by crests 23 and roots 26.
  • the present invention relates to a cylindrical pile element with a longitudinal axis, which pile element is arranged for use as a reinforcing or supporting construction element, for instance in the construction of buildings and/or traffic infrastructure.
  • the pile has a cross-sectional cylinder diameter of at least 70 mm.
  • the thread of the pile element is conical in the sense that the pile element thread is generally tapered from a relatively wider part, extending along a longer section, such as covering the majority of the pile element length, towards a relatively narrower part closer to the pin end of the pile element. This implies that the thickness of the cylinder wall of the pile element is also tapered towards a thinner part near the pin end.
  • the cylinder diameter referred to above pertains to the maximum diameter away from the conical section of the pile.
  • the pile element is arranged to be lengthwise extendable using a cylindrical sleeve element, using a male pile element thread comprised in a pin end of the said pile element, which male thread is arranged to engage with a corresponding female sleeve element thread comprised in the said sleeve element at a respective box end of the sleeve element.
  • sleeves 20a, 20b of the type illustrated in a simplified fashion, in figure 9 , several pile elements 10a, 10b, 10c may be joined together to form a single, connected and longer pile 30. This is illustrated in figure 10 , in a simplified and not-to-scale manner.
  • the side flank of the pile element thread facing towards the pin end of the pile element is inclined between 15° and 25°, preferably about 20°, most preferably 20°, in relation to a plane which is perpendicular to the longitudinal axis V of the pile element.
  • this axis V is thus also vertical.
  • the opposite side flank, that is the side flank of the pile element thread facing away from the pin end of the pile element is inclined between 6° and 8°, preferably about 6°, most preferably 6°, in relation to a plane which is perpendicular to the longitudinal axis V of the pile element. This is illustrated in figures 1b (110° and 96° angle to longitudinal direction); 4b (110° and 84° angle to longitudinal direction); and 7b, respectively.
  • the threads are in general conical, preferably at a general angle of 3-4° to the longitudinal direction V - see figures 1b (3°); 4b (3°) and 7a (4°).
  • the combination of generally conical threads and the type of angled side flanks discussed above has been found, by the present inventors, to be superior for the specific application of construction piles. Namely, they offer a very strong joint between pile and sleeve once fastened with appropriate torque, at the same time as their installation can be made fast and in a highly reliable way.
  • a next pile element can simply be put, tipped or tilted down into the hole of the sleeve, which is mounted on the previous pile element (which is then arranged in a bore hole in the ground), and rotated into threaded engagement with the sleeve, with a low risk of the threads becoming intertangled due to rotational or angular mismatch between pile element and sleeve element. This is the case even when used in uncontrolled, heavily dirty environments, such as at a construction site with presence of moist, dirt, sand, gravel and so forth.
  • flank angles have proven to be advantageous in the case shown in the figures, in which the crest of the pile element thread comprises a flat surface which is substantially parallel to the longitudinal axis V of the pile element along substantially the whole length of the male thread.
  • the respective flat surfaces of consecutive crests are parallel displaced one the next, so that all such surfaces are essentially parallel to the longitudinal direction V of the pile element.
  • the pile element thread has a constant pitch, preferably throughout the whole or substantially the whole length of the pile element thread. The corresponding is preferably also true regarding the present sleeve element.
  • inner and outer corners of the threaded parts are in general rounded.
  • all external and internal corners of the pile element thread are rounded using a respective curvature radius of between 0.1 and 0.5 mm.
  • the corresponding is preferably also true regarding the present sleeve element.
  • the pile element and also correspondingly the sleeve element, is made of steel material as one integrated material body.
  • the steel material is a high strength structural steel such as S460 or comparable qualities.
  • Each pile element is preferably at least about 1 meter long, in a more preferred embodiment and primarily intended for heavy installations at least about 3 meters long, from pin end to pin end.
  • the pile element comprises two opposed pin ends, each comprising a respectively substantially identical male pile element thread according to the above.
  • the present invention further relates to a cylindrical pile sleeve element according to the above and as shown in the figures.
  • a sleeve element is, like the pile element, arranged for use as a reinforcing or supporting construction element, and has a cross-sectional cylinder diameter of at least 80 mm.
  • the sleeve element is arranged for extending lengthwise a cylindrical pile element of the above described type, using a female sleeve element thread comprised in the sleeve element at a respective box end of the sleeve element, and is arranged to engage with the male pile element thread of the said pile element.
  • the sleeve element thread is generally tapered from a relatively narrower part towards a relatively wider part closer to the said box end.
  • the side flank of the sleeve element thread facing away from the box end is inclined between 15° and 25° in relation to a plane which is perpendicular to the longitudinal axis V of the sleeve element, and in that the side flank of the sleeve element thread facing towards the box end is inclined between 6° and 8° in relation to a plane which is perpendicular to the longitudinal axis V of the sleeve element.
  • the sleeve element thread corresponds or at least substantially corresponds to the pile element thread in terms of side flank-, crest- and root angles and dimensions.
  • the sleeve element comprises an additional female thread arranged at an additional box end of the sleeve element, which additional female thread is substantially identical to the said sleeve element thread.
  • each sleeve element is arranged to interconnect two pile elements, one at each side of the sleeve element, forming a pile aggregate according to the present invention.
  • each respective pile element thread is preferably screwed fully into the corresponding sleeve element thread so that a fully made-up thread engagement is achieved between the pile element and the sleeve element.
  • the respective sleeve element threads are preferably arranged on the sleeve element so that the distance between the first and second pile elements is between 3 and 15 mm. This is illustrated in figures 3b (9.5 mm) and 6b (5 mm).
  • the shape of the sleeve element is preferably such that, in fully made-up engagement with the pile element, there is a play of at least 0.3 mm (see figure 6c ) between the inner surface of the sleeve element and the outer surface of the pile element along a distance of at least 3 mm from the box end of the sleeve element.

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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)

Claims (13)

  1. Zylindrisches Dielenkammerelement (10) mit einer Längsachse (V), das Dielenkammerelement (10) für die Verwendung als verstärkendes oder unterstützendes Bauelement, das Dielenkammerelement (10) hat einen Querschnittszylinderdurchmesser von mindestens 70 mm, das Dielenkammerelement (10) ist angeordnet, um längsweise ausfahrbar zu sein unter Verwendung eines zylindrischen Hülsenelements (20), unter Verwendung eines männlichen Dielenkammerelementgewindes, bestehend aus einem Zapfenende (11) des besagten Dielenkammerelements (10) und so angeordnet, um in ein korrespondierendes weibliches Hülsenelementgewinde einzugreifen, der aus besagtem Hülsenelement (20) besteht an einem jeweiligen Steckende (21) des Hülsenelements (20), das Dielenkammerelementgewinde wird generell verjüngt von einem relativ breiteren Teil zu einem relativ schmäleren Teil näher am besagten Zapfenende (11), dadurch gekennzeichnet, dass die Seitenflanke des Dielenkammerelementgewindes , welche in Richtung des Zapfenendes (11) zeigt, zwischen 15° und 25° abgeschrägt ist in Bezug auf eine Ebene, die senkrecht zur Längsachse (V) des Dielenkammerelements (10) ist, und dadurch dass die Seitenflanke des Dielenkammerelementgewindes, welche vom Zapfenende (11) weg zeigt, zwischen 6° und 8° abgeschrägt ist in Bezug auf eine Ebene, die senkrecht zur Längsachse (V) des Dielenkammerelements (10) ist.
  2. Zylindrisches Dielenkammerelement (10) gemäß Anspruch 1, dadurch gekennzeichnet, dass die Seitenflanke des Dielenkammerelements, welche in Richtung des Zapfenendes (11) zeigt, 20° in Bezug auf eine Ebene abgeschrägt ist, die senkrecht zur Längsachse (V) des Dielenkammerelements (10) entlang weitgehend der gesamten Länge des männlichen Gewindes ist.
  3. Zylindrisches Dielenkammerelement (10) gemäß Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Seitenflanke des Dielenkammerelementgewindes, welche vom Zapfenende (11) weg zeigt 6° abgeschrägt ist in Bezug auf eine Ebene, die senkrecht zur Längsachse (V) des Dielenkammerelements (10) entlang weitgehend der gesamten Länge des männlichen Gewindes ist.
  4. Zylindrisches Dielenkammerelement (10) gemäß einer beliebigen der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Gewindespitze des Dielenkammerelementgewindes eine ebene Fläche umfasst, die weitgehend parallel zur Längsachse (V) des Dielenkammerelements (10) ist entlang weitgehend der gesamten Länge des männlichen Gewindes.
  5. Zylindrisches Dielenkammerelement (10) gemäß einer beliebigen der vorangehenden Ansprüche, dadurch gekennzeichnet, dass das Dielenkammerelementgewinde eine konstante Steigung aufweist.
  6. Zylindrisches Dielenkammerelement (10) gemäß einer beliebigen der vorangehenden Ansprüche, dadurch gekennzeichnet, dass alle externen und internen Ecken des Dielenkammerelementgewindes abgerundet sind unter Verwendung eines jeweiligen Wölbungsradius von zwischen 0,1 und 0,5 mm.
  7. Zylindrisches Dielenkammerelement (10) gemäß einer beliebigen der vorangehenden Ansprüche, dadurch gekennzeichnet, dass das Dielenkammerelement (10) aus Stahlmaterial als ein integrierter Materialkörper hergestellt ist.
  8. Zylindrisches Dielenkammerelement (10) gemäß einer beliebigen der vorangehenden Ansprüche, dadurch gekennzeichnet, dass das Dielenkammerelement (10) mindestens 1 Meter lang ist.
  9. Zylindrisches Dielenkammerelement (10) gemäß einer beliebigen der vorangehenden Ansprüche, dadurch gekennzeichnet, dass das Dielenkammerelement (10) ein zusätzliches männliches Gewinde umfasst, das an einem zweiten, gegenüberliegenden Zapfenende des Dielenkammerelements (10) angeordnet ist, dieses zusätzliche männliche Gewinde ist weitgehend identisch mit dem besagten Dielenkammerelementgewinde.
  10. Zylindrisches Dielenkammerhülsenelement (20) mit einer Längsachse (V), dieses Hülsenelement (20) ist angeordnet zur Verwendung als verstärkendes oder unterstützendes Bauelement, das Hülsenelement (20) hat einen Querschnittszylinderdurchmesser von mindestens 80 mm, das Hülsenelement (20) ist angeordnet, um längsweise ein zylindrisches Dielenkammerelement (10) auszustrecken gemäß eines beliebigen der vorangehenden Ansprüche, unter Verwendung eines weiblichen Hülsenelementgewindes, das aus einem Hülsenelement (20) an einem jeweiligen Steckende (21) des Hülsenelements (20) besteht und angeordnet ist, um in das männliche Dielenkammerelementgewinde des besagten Dielenkammerelements (10) eingreifen, dieses Dielenkammerelementgewinde wird generell verjüngt von einem relativ schmäleren Teil zu einem relativ breiteren Teil näher an besagtem Steckende (21), dadurch gekennzeichnet, dass die Seitenflanke (25) des Hülsenelementgewindes, das vom Steckende (21) weg zeigt, zwischen 15° und 25° abgeschrägt ist in Bezug auf eine Ebene, die senkrecht zur Längsachse (V) des Hülsenelements (20) ist, und dadurch, dass die Seitenflanke (24) des Hülsenelementgewindes, welche in Richtung des Steckendes (21) zeigt, zwischen 6° und 8° abgeschrägt ist in Bezug auf eine Ebene, die senkrecht zur Längsachse (V) des Hülsenelements (20) ist.
  11. Zylindrisches Dielenkammerhülsenelement (20) gemäß Anspruch 10, dadurch gekennzeichnet, dass das Hülsenelement (20) ein zusätzliches weibliches Gewinde umfasst, welches an einem zusätzlichen Steckende des Hülsenelements (20) angeordnet ist, dieses zusätzliche weibliche Gewinde ist weitgehend identisch mit dem besagten Hülsenelementgewinde.
  12. Dielenkammeraggregat (30) umfassend ein zylindrisches Dielenkammerelement (10) gemäß einem beliebigen der Ansprüche 1-9 und ein zylindrisches Dielenkammerhülsenelement (20) gemäß Anspruch 10 oder 11, wobei das Dielenkammerelementgewinde vollständig in das Hülsenelementgewinde eingeschraubt ist, so dass ein fingierter Gewindeeingriff zwischen dem Dielenkammerelement (10) und dem Hülsenelement (20) erzielt wird.
  13. Dielenkammeraggregat (30) umfassend erste und zweite zylindrische Dielenkammerelement (10a, 10b, 10c) gemäß Anspruch 9 und ein zylindrisches Dielenkammerhülsenelement (20a, 20b) gemäß Anspruch 11, wobei das Dielenkammerelementgewinde des ersten Dielenkammerelements (10a) vollständig in das Hülsenelementgewinde eingeschraubt ist, so dass der fingierte Gewindeeingriff zwischen dem ersten Dielenkammerelement (10a) und dem Hülsenelement (20a) erzielt wird, wobei das zusätzliche Dielenkammerelementgewinde des zweiten Dielenkammerelements (10b) vollständig in das zusätzliche Hülsenelementgewinde eingeschraubt ist, so dass ein fingierter Gewindeeingriff zwischen dem zweiten Dielenkammerelement (10b) und dem Hülsenelement (20a) erzielt wird, dadurch gekennzeichnet, dass die jeweiligen Hülsenelementgewinde auf dem Hülsenelement (20a) angeordnet sind, so dass der Abstand zwischen den ersten und zweiten Dielenkammerelementen (10a, 10b) zwischen 3 und 15 mm beträgt.
EP16150613.4A 2015-01-23 2016-01-08 Zylindrischer pfahl und ausweitungselement des zylindrischen pfahls Active EP3048202B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE1550072A SE538465C2 (en) 2015-01-23 2015-01-23 Cylindrical pile and cylindrical pile extension element

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EP3048202A1 EP3048202A1 (de) 2016-07-27
EP3048202B1 true EP3048202B1 (de) 2017-08-16

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Publication number Priority date Publication date Assignee Title
JP2018003431A (ja) * 2016-07-01 2018-01-11 Ｊｆｅスチール株式会社 逆回転防止機構を備えたネジ継手

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Publication number Priority date Publication date Assignee Title
US4444421A (en) 1980-11-12 1984-04-24 Varco International, Inc. Driveable pile connections
SE523782C2 (sv) 1997-10-29 2004-05-18 Hardab Ab Grundförstärkningspelare bestående av ett antal delelement
FI3931U1 (fi) 1998-12-18 1999-04-22 Rautaruukki Oyj Porapaalun jatkoliitos
FI125990B (fi) 2009-05-29 2016-05-13 Rautaruukki Oyj Paalu

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SE1550072A1 (sv) 2016-07-12
SE538465C2 (en) 2016-07-12

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