EP2623676B1 - Pieu pour fondation profonde et procédé de fourniture de pieu - Google Patents

Pieu pour fondation profonde et procédé de fourniture de pieu Download PDF

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Publication number
EP2623676B1
EP2623676B1 EP13160418.3A EP13160418A EP2623676B1 EP 2623676 B1 EP2623676 B1 EP 2623676B1 EP 13160418 A EP13160418 A EP 13160418A EP 2623676 B1 EP2623676 B1 EP 2623676B1
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EP
European Patent Office
Prior art keywords
concrete pile
pile section
drive
pile
section
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EP13160418.3A
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German (de)
English (en)
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EP2623676A3 (fr
EP2623676A2 (fr
Inventor
Christian Nilverius
Göran Olsson
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N P Forvaltnings AB
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N P Forvaltnings AB
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Priority to DK13160418.3T priority Critical patent/DK2623676T3/en
Priority to EP13160418.3A priority patent/EP2623676B1/fr
Publication of EP2623676A2 publication Critical patent/EP2623676A2/fr
Publication of EP2623676A3 publication Critical patent/EP2623676A3/fr
Application granted granted Critical
Publication of EP2623676B1 publication Critical patent/EP2623676B1/fr
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    • 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

Definitions

  • the present invention relates to underground foundation reinforcement.
  • the present invention relates to a pile for deep foundation piling, and to a method for providing a pile for deep foundation piling, which pile is arranged to be driven into the ground and comprises at least one concrete section having drive-fit connections members arranged to axial ends of the concrete pile section for joining the concrete pile section with a final upper pile section formed of a tube, such as a steel tube or pipe.
  • the present invention also relates to a concrete section comprising drive-fit connections members arranged to axial ends of the concrete pile section.
  • piles In the field of deep foundation it is known to provide different kinds of piles which are driven into the ground in order to e.g. provide improved load bearing capacity or to support the ground for other reasons.
  • piles may be formed of reinforced concrete, steel, or wood, and are typically driven into the ground using a pile driver. By driving the pile into the ground, the soil is displaced and/or compressed which result in friction between the sides of the pile and the soil which provides increased load-bearing capacity, see for example document GB 2 172 038 A ).
  • a steel pile made of steel pipe sections which are joined together during the driving process is formed and driven into the ground until the intended depth, or an underground support portion, such as a more load bearing stratum or rock, is reached by the lower pile end which may be provided with a pile end shoe.
  • the excess or projecting portion of the final or top steel pile section extending above the ground may be cut off and used as a pile section in an additional steel pile.
  • steel piles are disadvantageous in that they e.g. are expensive to manufacture due to e.g. high energy consumption during manufacturing of the steel pile sections and in that the costs the for the raw material is relatively high.
  • a concrete pile made of prefabricated concrete pile sections which are joined to each other may be driven into the ground with a pile end shoe arranged at a bottom end, wherein the concrete pile sections are joined, or spliced, by joint members integrated with or casted into axial end portions of each concrete pile section.
  • the concrete piling technique is disadvantageous in that the cut off excess portion of the concrete pile generates waste material.
  • the cut off excess portion may not be reused in a different concrete pile since the cut off axial end of the excess portion lacks the required joint member.
  • the length of the prefabricated concrete pile sections may be matched to the intended drive depth of the pile.
  • manufacturing, stock-keeping and transporting a number of different concrete pile sections having different lengths are costly.
  • the final depth of a driven pile may vary unpredictably, also within the same construction site.
  • a general object of the present invention is to provide an improved pile and an improved method for providing a pile, which pile is more cost efficient and allows for higher utilization of the raw material.
  • the present invention relates to a pile for deep foundation piling, which pile is driven or arranged to be driven into the ground, the pile comprising an upper concrete pile section comprising an upper axial end provided with an upper drive-fit connection member arranged for cooperation with a tube member having a predetermined radial dimension, and a final upper pile section formed of a tube having the predetermined radial dimension, wherein a lower axial end of the final upper pile section is attached by drive-fit cooperation with the upper drive-fit connection member of the upper concrete pile section.
  • an improved pile may be realized by providing a pile comprising a combination of concrete pile sections provided with a drive-fit connection member which is relatively cost efficient to manufacture and a final pile section, wherein the final pile section are formed of a tube having a predetermined dimensional shape adapted for drive-fit attachment to the concrete pile section.
  • the pile may advantageously by provided by driving, forcing, and/or pressing the tube-formed final upper pile section into secure attachment with the drive-fit connection member.
  • the concrete pile sections with drive-fit connection member arranged to cooperate with tube members having the predetermined dimensional shape the material utilization level and manufacturing cost may be improved.
  • low cost concrete pile sections may be used to form the main part of the pile, while pipe sections may be used to form the final, or top, pile sections.
  • the final pile section By providing the final pile section, the excess or projecting portion of the final or top pile section extending above the ground may be cut off and re-used in a different pile, for example as the final pile section, as one or more joint members, and/or as a bottom pile section.
  • the pile length may advantageously be adjusted by cutting of the final pile section more efficiently.
  • the final pile sections allows for an upper pile cut off level which is below the ground level, i.e. at a subsurface level, by cutting the pile section from the inside using e.g. an internal cutting device.
  • a subsurface cut off level reduce the risk of damaging the pile during earth excavating operations following piling operations.
  • the pile according to the present invention is further advantageous in that only one type, or length of, concrete pile section is needed to provide piles of varying lengths by joining a plurality of concrete pile sections. Hence, manufacturing, handling, and stock-keeping of the concrete pile sections is facilitated since the need for concrete piles of different lengths may be avoided or reduced. Also, planning and transportation of a plurality of concrete pile sections having different length, due to unpredictable piling depths, may be avoided.
  • the concrete pile sections may have a square, octagonal, or a round, or any other suitable cross-section.
  • the concrete pile sections may be reinforced e.g. with reinforcing bar, rebar, and may be pre-stressed.
  • the pile may comprise a plurality of intermediate concrete pile sections, each comprising a first and second axial end provided with respective drive-fit connection members, wherein the one or more concrete pile sections may be joined by a joint member in a consecutive manner during an in situ driving process.
  • the tube which is used for forming the final steel pile section and e.g. the joint members may have a square, octagonal, or a round cross-section, or any other suitable cross-section.
  • the upper concrete pile section further comprises a lower axial end provided with a lower drive-fit connection member
  • the pile further comprising one or more lower concrete pile sections, each lower concrete pile section comprising a lower axial end provided with a lower drive-fit connection member and an upper axial end provided with an upper drive-fit connection member, each drive-fit connection members of the upper and lower concrete pile sections being arranged for cooperation with a tube member having a predetermined radial dimension
  • the lower and upper concrete pile sections being joined to axially neighboring concrete pile section by one or more joints, the one or each joint being formed of the respective lower drive-fit connection member and the upper drive-fit connection member of the neighboring concrete pile sections and a joint member being formed of a tube having the predetermined radial dimension, wherein a first axial end portion of the joint member is attached by drive-fit cooperation with the upper drive-fit connection member and a second axial end portion of the joint member is attached by drive-fit cooperation with the lower drive-fit connection member
  • an improved pile may be achieved by providing a pile comprising a combination of concrete pile sections, joint members for joining the concrete pile sections and a final pile section, wherein the joint members and the final pile section are formed of a tube, such as a steel tube or pipe, having a predetermined dimensional shape.
  • the material utilization level and manufacturing cost may be improved.
  • low cost concrete pile sections may be used to form the main part of the pile, while tube pile sections may be used to form the final, or top, pile sections as well as joint member for joining the concrete pile sections.
  • waste material which is cut off from the final pile section in order to provide a pile of suitable length may be reused as joint members in a following pile.
  • the pile further comprises an end shoe member arranged to the bottom end of the pile, which end shoe member comprises a tube, such as a steel tube or pipe, having the predetermined radial dimension, wherein an upper axial end portion of the tube is attached by drive-fit cooperation with the lower drive-fit connection member of a bottom concrete pile section.
  • the bottom and upper concrete pile sections may be the same, wherein the pile only comprises one concrete pile section.
  • the pile may also comprise a plurality of concrete pile sections, wherein the end shoe member is attached to the bottom of the axially lowest concrete pile section.
  • the end shoe is advantageous in that it facilitates the driving, or insertion, of the pile into the ground. Furthermore, the end shoe protects and prevents cracking of the bottom concrete pile section.
  • the end shoe is formed of a casting member, e.g. of iron, shaped to a point and fitted to a steel tube which is fitted to the lower end of the pile.
  • the end shoe comprises a drive-fit connection member being arranged for drive-fit attachment or cooperation with a tube member having the predetermined radial dimension.
  • the end shoe member and associated tube may also be used for penetrating and/or securing the bottom end of the pile into a subsurface load bearing support stratum which is inappropriate for concrete pile sections, such as moraine or boulder clay.
  • the lower drive-fit connection member of each concrete pile section comprises a first axially receiving cavity
  • the upper drive-fit connection member of each concrete pile section comprises a second axially receiving cavity, which axially receiving cavities have decreased, or inwardly decreasing, radial dimensions for drive-fit cooperation with a tube having the predetermined radial dimension.
  • a pile section or a joint member having the predetermined radial outer dimension may be driven into a secured engagement with lower or upper drive-fit connection member of any concrete pile section.
  • the axially receiving cavities forms cavities which are arranged to receive a tube member which is inserted into the cavity in the axial direction in relation to the pile.
  • one or both of the lower and upper drive-fit connection members of each concrete pile section comprises an axial tapered protrusion portion, instead of the receiving cavity, which protrusion portion extends away from the concrete pile section and is arranged to be received in the tube having the predetermined dimension such that drive-fit attachment is provided by plastically and/or elastically expanding the end portion of the tube by the tapered protrusion.
  • the radial dimension of the tapered protrusion decrease in an axial direction away from the concrete pile section.
  • the inner radial dimension of the tube is adapted for drive-fit cooperation with the tapered protrusion.
  • the lower axial end of the final upper pile section is driven into the second axially receiving cavity of the upper drive-fit connection member of the upper concrete pile section.
  • the first axial end portion of the joint member of the or each joint is driven into the second axially receiving cavity of the upper drive-fit connection member and the second axial end portion of the joint member is driven into the first axially receiving cavity of the lower drive-fit connection member.
  • the axially receiving cavities forms cavities which are arranged on respective ends of the concrete pile section to receive a tube member which is inserted, or driven, by force into the cavity in the axial direction in relation to the pile section.
  • each drive-fit connection member is arranged for drive-fit cooperation with a tube member having a predetermined radial dimension such that the tube is prevented from axial and rotational movements in relation to the drive-fit connection member.
  • each drive-fit cooperation comprises a friction joint formed by plastically and/or elastically deforming the first and second axial end portions of the joint member and the lower axial end of the final upper pile section.
  • the deformation may involve compressing or expanding the first and second axial end portions of the joint member and the lower axial end of the final upper pile section in a transverse direction in relation to the axial direction of the pile.
  • each axially receiving cavity is provided with an inner support portion against which the inserted tube, in its inserted position, is arranged to rest.
  • the inner support portion further improves the durability and reliability of the drive-fit joint by ensuring that the tube is driven into the cavity to a desired predetermined axial depth.
  • the drive-fit cooperation between the drive-fit connector member and the tube may be configured for suitable cracking, buckling, and load bearing properties.
  • the joint member comprises an air release opening arranged for releasing air from the inside of the joint member during joining of two concrete pile sections, such as the upper and lower concrete pile sections, or two lower concrete pile sections.
  • two concrete pile sections such as the upper and lower concrete pile sections, or two lower concrete pile sections.
  • the air release opening comprises a radial through hole arranged at an axially centered position of the joint member.
  • the air release opening is provided on the joint member in a location which is centered in relation to the axial extension of the joint member.
  • the air release opening may be adapted to be positioned in an axially centered position between two connected concrete pile sections.
  • the axial length of the joint member may be adapted in relation to the axial depth of the axially receiving cavity such that the end plate support surfaces of two adjacent and joined concrete pile sections meet or are arranged in contact with each other.
  • the concrete pile sections have an essentially square cross-section, for example having the dimensions 20x20 cm, 23,5x23,5 cm, 25x25 cm, 27,5x27,5 cm, or 30x30 cm, ⁇ 2 or ⁇ 1 cm on any side.
  • the tube of which the joint member and the final upper pile section are formed of e.g. a pipe may have an outer diameter between 5 and 30 cm, or between 8 and 20 cm, or between 10 and 17 cm.
  • the outer dimension of the tube may also, according to different embodiments, be about 11,5 cm, 14 cm, or 17 cm, ⁇ 2 or ⁇ 1 cm, or anything there between.
  • the length of the concrete pile sections may, according to different embodiments, be between 2 and 35 m, or between 4 and 25 m, or between 4 and 10, or about 5, 9, or 13 m, ⁇ 2 or ⁇ 1 m, or anything there between.
  • the present invention relates to a method for providing a pile for deep foundation piling, which pile is arranged to be driven into the ground, the method comprising:
  • an improved method for providing a pile which pile is more cost efficient and allows for higher utilization of the raw material.
  • the method for providing or manufacturing a pile is further advantageous in similar manner as described above in relation to the pile for deep foundation piling.
  • the upper concrete pile section further comprises a lower axial end provided with a lower drive-fit connection member arranged for cooperation with a tube member having a predetermined radial dimension, the method further comprising:
  • piling, or in situ piling, using only one type of similar sized tubes for joint members and for the final upper pile section, and only one type of concrete pile section, is provided. Furthermore, any rest material generated during the manufacturing of a first pile may advantageously be reused during the manufacturing of a second pile.
  • the method further comprises releasing air from the inside of the joint member during joining the upper concrete pile section to the lower concrete pile section via an air release opening of the joint member.
  • air is released in a radial direction through the joint member via the air release opening.
  • each concrete pile section may, according to an exemplifying embodiment, be formed of a first axially receiving cavity
  • the upper drive-fit connection member of each concrete pile section is formed of a second axially receiving cavity, which axial receiving cavities have decreased radial dimensions for drive-fit cooperation with a tube having the predetermined radial dimension.
  • the step of axially joining the final pile section to the upper concrete pile section comprises driving the lower axial end portion of the final pile section into the second axially receiving cavity of the upper drive-fit connection member of the upper concrete pile section.
  • the final pile section may advantageously be axially forced or pressed into the axially receiving cavity such that it is securely attached to concrete pile section.
  • the step of axially joining the upper concrete pile section to the at least one lower concrete pile section comprises driving the first axial end portion of the joint member into the second axially receiving cavity of the lower concrete pile section and driving the second axial end portion of the joint member into the first axially receiving cavity of the upper concrete pile section.
  • the present invention relates to a concrete pile section for a pile for deep foundation piling, during which piling the pile is arranged for being driven into the ground.
  • the concrete pile section comprises a first and second end joint arranged at opposite axial ends of the concrete pile section, each end joint comprising an end plate comprising a support surface facing away from the concrete pile section, and a drive-fit connection member arranged in a radially center position in relation to the end plate, which drive-fit connection member has an axially tapered shape arranged for drive-fit cooperation with a tube member, such as a steel tube or pipe, having a predetermined radial dimension.
  • the end joint and drive-fit connection member is arranged for connection of a tube, such as a steel tube or pipe, forming part of the load bearing structure of pile.
  • FIG.1 and Fig. 2 two different schematic perspective views of a pile 1 for deep foundation piling according to an embodiment of the present invention are illustrated.
  • the pile is manufactured on site while it is driven into the ground 2 towards a subsurface load bearing support stratum 2'.
  • the pile has reach its intended position wherein a bottom end of the pile 1 has reach the support stratum 2'.
  • the pile 1 extends in a main axial direction.
  • Pile 1 comprises a plurality of concrete pile sections, 3, 4, 5, or more, which are consecutively joined after each other in the axial direction at joints 11a, 11b, or more, to form the a main portion of the pile 1.
  • Each pile section extends in the axial direction and has an upper and a lower end arranged in axially opposite configuration to each other in the axial direction.
  • pile 1 comprise lower pile sections 3, 4 which form the axially bottom end concrete pile sections of the pile, and an upper concrete pile section 5 which is attached to and arranged above the lower concrete pile section 3, 4.
  • All concrete pile sections 3, 4, 5 are substantially identical and may be manufactured according to one manufacturing process.
  • each concrete pile section 3, 4, 5 comprises a respective lower axial end 6, 6', 6" each provided with a respective lower drive-fit connection member 7, 7', 7" and a respective upper axial end 8, 8', 8" each provided with a respective upper drive-fit connection member 9, 9', 9", wherein each drive-fit connection member is arranged for drive-fit cooperation and attachment with a tube member having a predetermined radial dimension D.
  • Each concrete pile section is further symmetric in relation to an axially centre plane having a normal direction coinciding with a main axial direction of the concrete pile section.
  • each joint 11a, 11b comprises a joint member 12 formed of a tube, such as a steel tube or pipe, having a predetermined outer radial dimension D, wherein attachment between the joined concrete pile sections are achieved by drive-fit cooperation between the respective drive-fit connection members of the concrete pile sections and the joint member 12 which is arranged between the concrete pile sections.
  • a first axial end portion 13 of the joint member 12 is driven into drive-fit cooperation with the upper drive-fit connection member and a second axial end portion 14 of the joint member 12 is driven into drive-fit cooperation with the lower drive-fit connection member of respective joint.
  • the pile 1 is being manufactured on site wherein the pile 1 is being driven into the ground while, in an alternating process, additional concrete pile sections, such as upper concrete pile section 5, are jointed at the upper end of the pile 1.
  • the pile 1 may be manufactured by providing the lower axial end 6 of the first, or lower, concrete pile section 3 with an end shoe member 16, which end shoe member comprises a tube having the predetermined radial dimension D.
  • the lower concrete pile section 3 and associated end shoe member is driven into the ground 2 by a pile driver (not shown) until the lower concrete pile section is essentially fully inserted into the ground.
  • a further lower concrete pile section 4, which forms and intermediate pile section, is joined to the upper axial end 8 of the lower concrete pile section 3 at a joint 11a by pressing, or forcing, in an axial direction, the lower 3 and 4 concrete pile sections into drive-fit cooperation with an intermediately arranged joint member 12.
  • the pile 1 may be driven further into the ground by the pile driver, after which further concrete pile sections or a final upper pile section 10, as shown in Fig. 2 , is attached to the upper axial end of the upper concrete pile section.
  • a further concrete pile section 5, which forms the upper concrete pile section is attached by drive-fit attachment at joint 11b in a similar manner as described with reference to joint 11a, after which the pile 1 may be further driven into the ground 2.
  • the pile has been driven into the ground to its intended depth and a final pile section 10 formed of a e.g. steel tube having the predetermined outer radial dimension D adapted for drive-fit cooperation with the concrete pile sections' drive-fit connection members.
  • a lower axial end 15 of the final upper pile section 10 is attached by drive-fit cooperation to the upper drive-fit connection member 8" of the upper intermediate concrete pile section 5.
  • the pile may be formed with only one or a plurality of concrete pile sections, Hence, the pile 1 may be arranged into different lengths depending on the number of lower concrete pile sections which are provided.
  • the final, or top, pile section 10 comprises an excess, or projecting, portion 10a extending above the ground 2 which may be cut off at a suitable level, such as level 38, depending on the intended use and function of the pile 1.
  • the final pile section 10 may be cut off using cutting wheel or similar device, or an internal cutting device for cutting the final pile section from the inside at the intended level.
  • the final pile section's cut off level may be below the surface of the ground which may be advantageous in some situations.
  • each axial end of the concrete pile sections 3, 4, 5 is arranged to cooperate via drive-fit attachment with the final pile section 10 to form the upper portion of the pile 1, and with the joint member 12 to provide secure attachment of the concrete pile sections to each other via joints 11a, 11b wherein the final pile section 10 and the joint member 12 and may be formed of the same type of pipe having the predetermined outer radial dimension D.
  • the final pile section 10 and the joint member 12 may be formed of the same type of pipe having the predetermined outer radial dimension D.
  • a pile driver may advantageously be used for driving the sections into drive-fit cooperation with each other on site which facilitate and improves the manufacturing process.
  • FIG. 3 a schematic perspective view of an upper and/or lower concrete pile section 3, a joint member 12 and an end shoe member 16 is illustrated.
  • the concrete pile section 3 is a reinforced precasted concrete pile section which comprises reinforcing bars 24 which are casted, or integrated, into the concrete body 25 of the concrete pile section 3.
  • the reinforcing bars 24 are arranged essentially parallel to each other and extend axially along a main axial direction of the concrete pile section 3.
  • Additional spiral reinforcing bar 26 are arranged, or wound, around the reinforcing bars 24 in a spiral, or helix, configuration extending in the axial direction. The wounding of the spiral reinforcing bar 26 is closer at the axial lower and upper portions of the concrete pile section 3.
  • the concrete pile section 3 is further provided with a first end joint 21 arranged at the lower axial end 6 and a second end joint 22 arranged at the upper axial ends 8 of the concrete pile section 3.
  • Each end joint 21 and 22 comprises a respective end plate 23 comprising a support surface facing away from the concrete pile section 3 in the axial direction.
  • Each end joint 21, 22 is further provided with respective drive-fit connection members 7 and 9 which are arranged in a radially center position in relation to the respective end plates 23.
  • the drive-fit connection members are formed of respective axial receiving cavities 18 and 19 which have an axially tapered shape arranged for drive-fit cooperation with a tube member having the predetermined radial dimension D.
  • a lower axial end of a final upper pile section, or a first axial end portion 13 of a joint member 12 is arranged to be inserted and driven into the second axially receiving cavity 19, wherein a second axial end portion 14 of the joint member 12 is arranged to be inserted and driven into a first axially receiving cavity of a further concrete pile section (not shown) in order to form a joint between two concrete pile sections.
  • the joint member 12 comprises a through hole which forms an air release opening 20 for releasing air from the inside of the joint member 12 during joining of two neighboring concrete pile sections.
  • the air release opening is provided at an axially center position which may be defined as a center location on the joint member in relation to its extension in the axial direction and extends through the pipe wall of the joint member 12. Thereby the air release opening 20 will be positioned at the joint between two joined concrete pile sections.
  • an upper axial end portion 17a of a tube 17 of end shoe member 16 is arranged to be inserted and driven into the first axially receiving cavity 18, which tube 17 has the predetermined outer radial dimension D.
  • the end shoe may be secured by and at least partly formed of a similar type tube material as the joint member 12 and final pile section 10.
  • the tube 17 may also comprise a through hole which forms an air release opening for releasing air from the inside of the tube 17 during joining of the end shoe member 16 to the lowest concrete pile section of the pile, arranged in similar manners as described with reference to air release opening 20. If the pile only comprises one concrete pile section, the upper concrete pile section also forms the lower concrete pile section which forms the bottom end of the pile to which the end shoe member 16 may be attached.
  • End joints 21 and 22 further comprise a respective set of side walls 27 which extend from the respective end plate in a direction towards the axial center of the concrete pile section 3.
  • at least one side wall 27 comprises inspection holes 28 for ensuring concrete filling level during the casting process of the concrete pile section and end joints 21 and 22.
  • the inspection holes indicates that the concrete, prior to hardening, sufficiently fills the intended space inside the side walls without leaving e.g. air pockets, or corresponding implications.
  • Each end joint 21 and 22 further comprises fixing bars 34 for fixing and securing the end joint to the concrete pile section 3, which fixing bars bar may be casted, or integrated, into the casted concrete body 25 during a precast manufacturing process of the concrete pile section.
  • FIG. 4 and 5 schematic cross-sectional views of an axial end of a concrete pile section 3 according to two different embodiments of the present invention are illustrated. Also, joint members 12 are illustrated.
  • the concrete pile section 3 may be used as the upper concrete pile section and/or as lower concrete pile sections of a pile. Although only the upper axial end of the concrete pile section is illustrated and described, the lower axial end of the concrete pile section 3 may be arranged in a corresponding manner.
  • the end joint 22 comprises a drive-fit connection member 9 formed of a receiving cavity 19, an end plate 23 with a support surface facing away from the concrete pile section 3 in the axial direction, and side walls 27 which extend from the end plate along the outer sides of the concrete body 25.
  • the concrete body extends into the space between the receiving cavity 19 and the side walls 27.
  • the side walls 27 protect the axial end of the concrete pile section during handling, transportation, pile manufacturing, and piling process.
  • the receiving cavity 19 is formed by an axially inwardly extending cavity having an opening through end plate 23, which opening is arranged in a radial centered position in relation to the concrete pile section 3.
  • the receiving cavity 19 has a radial dimension D' which is adapted to receive a tube having the predetermined radial dimension D, such as the lower axial end of the final pile section 10 depicted in Fig. 2 , or the illustrated lower axial end 13 of joint member 12.
  • Inner walls 35 of the cavity extend in an inwardly tapered configuration from the opening towards a support portion 29 arranged to support and transfer axial loads from the tube, such as the final pile section, the joint member, or end shoe member, when it is fully driven into cavity 19.
  • the support portion 29 also ensures that the tube is driven into the cavity to a predetermined depth such that further insertion is prevented.
  • the inner radial dimension of the receiving cavity is D", which is smaller than D'.
  • a suitable drive-fit connection between receiving cavity 19 and the tube wherein the tube is at least partially plastically and/or elastically compressed into secure drive-fit attachment in the receiving cavity 19.
  • the drive-fit connection member may at least be partially plastically and/or elastically expanded.
  • the difference d between D" and D' may for example be between 0 and 15 %, or between 0 and 10 %, or between 0,1 and 5 % of the radial dimension D.
  • the radial dimension D" and D' may be essentially the same but less than the radial dimension D such that drive-fit cooperation between the tube having the radial dimension D and the receiving cavity is realized.
  • the drive-fit attachment does not require welding and may be water tight/resistant.
  • the receiving cavity 19 is formed of a tubular member 30 which also comprises an opposite tapered inner portion 31 into which a stop member 32 is secured via drive-fit attachment.
  • the tapered configuration of the inner portion 31 is arranged such that the radial dimension decreases in a direction from an inner axial end of the tubular member 30 towards an axially centered portion of the tubular member 30 at which the support portion 29 is arranged.
  • the stop member 32 is driven into the opposite tapered inner portion 31 such that an outer axial end of the stop member 32 forms the support portion 29.
  • the stop member 32 is sealed by an inner bottom plate 33 which prevent concrete from entering into the receiving cavity during the casting process of the concrete pile section.
  • the end joint 22 further comprises fixing bars 34 secured to the tubular member 30, which fixing bars extend axially into the concrete body 25 and provides secure attachment of the end joint 22 to the concrete pile section 3.
  • the tubular member 30 may further be provided with deformation layer, or zone, 38 arranged radially outside the side wall of the tubular member for absorbing expanding deformations in e.g. the radial direction, of the tubular member 30 when a tube is driven into drive-fit attachment in the tubular member 30, such that the risk of cracking of the concrete body 25 which is adjacent radially outside the tubular member 30 may be reduced or avoided.
  • deformation layer, or zone, 38 arranged radially outside the side wall of the tubular member for absorbing expanding deformations in e.g. the radial direction, of the tubular member 30 when a tube is driven into drive-fit attachment in the tubular member 30, such that the risk of cracking of the concrete body 25 which is adjacent radially outside the tubular member 30 may be reduced or avoided.
  • the end joint 22 is arranged in a similar manner as described in relation to Fig. 4 , unless stated otherwise.
  • the tubular member 30 does not comprise an opposite tapered inner portion. Instead, the tubular portion is provided with a bottom plate 33 which forms the support portion 29 which stops the inserted tube at the intended depth during a drive-fit attachment procedure.
  • the end joint 22 depicted in e.g. Fig. 4 and 5 may also be used in combination with a wood joint member for axially joining a concrete pile section, or a portion of a concrete pile section, with a wood pile section.
  • the wood joint member comprises a tube comprising an end portion arranged to driven to drive-fit cooperation with the drive-fit connection member of the end joint, and an opposite end portion of the wood joint member which comprises attachment members for attachment to a wood pile section, such as hock members, or barbed hock members provided with barbs to be partially inserted in the end portion of the wood pile section.
  • FIG. 6 and 7 two schematic perspective views of an end joint 22 comprising a drive-fit connection member 9 are illustrated, which end joint 22 is arranged for being integrated, or casted into, an axial end of a concrete pile section.
  • the end joint 22 comprises an end plate 23 including a support surface facing in an axial direction, and a drive-fit connection member 9 arranged in a radially center position in relation to the end plate 23, which drive-fit connection member has an axially tapered shape arranged for drive-fit cooperation with a tube member having a predetermined radial dimension D.
  • the axially tapered shape is formed of a receiving cavity 19 for receiving and securing a tube by drive-fit cooperation.
  • the end joint 22 is further arranged as described in relation to Fig. 4 .
  • FIG. 8 a schematic cross-sectional view of an alternative embodiment of the axial end 8 of a concrete pile section 3, and associated joint member 22, is illustrated.
  • the joint member 22 comprises a drive-fit connection member 9 arranged for cooperation with a tube member having a predetermined radial dimension D.
  • the drive-fit connection member 9 is formed of a protrusion portion extending axially away from the end joint 22 from end plate 23, and is adapted for drive-fit cooperation with an inner radial dimension of a tube by insertion into an axial end of the tube.
  • the protrusion portion is cone shaped, or tapered, and comprises tilted side walls 35, such that the radial dimension of the protrusion portions decrease in the axial direction away from the end plate 23.
  • the end joint 22 is arranged in a similar manner as described in relation to Fig. 4 , unless stated otherwise.
  • the inner radial dimensions D" of the tubular member 30 are essentially the same along the main part of the axially receiving cavity such that a tube member having dimension D may be driven into secure drive-fit attachment.
  • the tube members i.e. the pile sections formed of a tube and joint members, may be formed of steel and/or corresponding high strength material which may be cut into desired length and used in combination with the drive-fit connection members of the concrete pile sections for forming a pile, wherein the tube members form part of the load bearing structure of the pile.
  • the concrete pile sections may be formed of a corresponding material which enables cost efficient manufacturing using casting techniques, involving e.g. integrating reinforcing bars, wherein the end joints according to the present invention are attached to the axial ends of the pile section.
  • drive-fit connection members and drive-fit attachment and cooperation between different members of the pile may also be referred to as press-fit or force-fit connection members and press-fit or force-fit attachment, respectively.
  • pile portions or members may be defined in relation to ground in a standard situation when a pile according to the present invention is or has been driven into the ground, which references are only used for denoting and identifying different structural portions and members of a pile.
  • the pile may be driven into the ground at an angle, or in an essentially horizontal direction, or any angle therebetween.
  • the pile may also be manufactured off site and transported to the piling site in an assembled, or partly assembled, configuration.

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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 (14)

  1. Section de pieu en béton (3, 4, 5) pour un pieu (1) destiné à l'enfoncement de pieu de fondation profonde, le pieu (1) étant agencé pour être enfoncé dans le sol au cours du battage de pieu, dans laquelle la section de pieu en béton (3, 4, 5) comprend un premier raccord d'extrémité (21) et un deuxième raccord d'extrémité (22) agencés à des extrémités axiales opposées de la section de pieu en béton (3, 4, 5), chaque raccord d'extrémité (21, 22) comprenant une plaque d'extrémité (23) comprenant une surface de soutien faisant face à l'écart de la section de pieu en béton (3, 4, 5), et un organe de liaison à ajustement par enfoncement (7, 7', 7" ; 9, 9', 9") agencé à une position centrale radialement par rapport à la plaque d'extrémité (23), caractérisée en ce que l'organe de liaison à ajustement par enfoncement (7, 7', 7" ; 9, 9', 9") a une forme effilée axialement agencée pour une coopération à ajustement par enfoncement avec un organe de tube, présentant une dimension radiale prédéterminée (D).
  2. Section de pieu en béton selon la revendication 1, dans laquelle les sections de pieu en béton (3, 4, 5) sont aptes à être raccordées d'une extrémité à l'autre par l'intermédiaire de raccords (11 a, 11 b) qui sont chacun constitués d'un organe de liaison à ajustement par enfoncement inférieur (7, 7', 7") et d'un organe de liaison à ajustement par enfoncement supérieur (9, 9', 9") de deux sections de pieu en béton adjacentes, dans laquelle les sections de pieu en béton (3, 4, 5) peuvent être raccordées par coopération à ajustement par enfoncement entre les organes de liaison à ajustement par enfoncement (7, 7', 7" ; 9, 9', 9") respectifs des sections de pieu en béton (3, 4, 5) et un organe de raccord (12) qui peut être agencé entre les sections de pieu en béton (3, 4, 5).
  3. Section de pieu en béton (3, 4, 5) selon la revendication 1, dans laquelle le raccord extrémité (21, 22) et l'organe de liaison à ajustement par enfoncement (7, 7', 7" ; 9, 9', 9") sont agencés pour relier un organe de tube faisant partie de la structure porteuse de charge du pieu (1).
  4. Section de pieu en béton (3, 4, 5) selon l'une quelconque des revendications précédentes, dans laquelle un organe de sabot d'extrémité (16) est agencé à l'extrémité inférieure du pieu (1), l'organe de sabot d'extrémité (16) comprend un organe de tube présentant la dimension radiale prédéterminée (D), et dans laquelle une portion d'extrémité axiale supérieure (17a) du tube (17) est attachée en coopération à ajustement par enfoncement avec l'organe de liaison à ajustement par enfoncement inférieur d'une section de pieu en béton inférieure.
  5. Section de pieu en béton (3, 4, 5) selon l'une quelconque des revendications précédentes, dans laquelle l'organe de liaison à ajustement par enfoncement inférieur (7, 7', 7") de chaque section de pieu en béton (3, 4, 5) comprend une première cavité de réception axiale (18), et l'organe de liaison à ajustement par enfoncement supérieur (9, 9', 9") de chaque section de pieu en béton (3, 4, 5) comprend une deuxième cavité de réception axiale (19), les cavités de réception axiale (18, 19) présentant des dimensions radiales réduites ou décroissant vers l'intérieur (D', D") pour une coopération à ajustement par enfoncement avec ledit organe de tube présentant la dimension radiale prédéterminée (D).
  6. Section de pieu en béton (3, 4, 5) selon la revendication 5, dans laquelle les parois intérieures (35) de la cavité (18, 19) s'étendent dans une configuration effilée vers l'intérieur depuis l'ouverture vers une portion de soutien (29) agencée pour soutenir et transférer des charges axiales à partir du tube, dans laquelle, à son ouverture, la cavité de réception (18, 19) présente une dimension radiale D' et, à la portion de soutien (29), la dimension radiale intérieure de la cavité de réception est D" qui est inférieure à D'.
  7. Section de pieu en béton (3, 4, 5) selon la revendication 6, dans laquelle une différence (d) entre (D") et (D') est entre 0 et 15 %, ou entre 0 et 10 %, ou entre 0,1 et 5 % de la dimension radiale (D) de l'organe de tube.
  8. Section de pieu en béton (3, 4, 5) selon l'une quelconque des revendications 5 - 7, dans laquelle la cavité de réception (18, 19) est constituée d'un organe tubulaire (30) qui comprend également une portion intérieure effilée opposée (31) dans laquelle un organe de butée (32) est fixé par l'intermédiaire d'un attachement à ajustement par enfoncement.
  9. Section de pieu en béton (3, 4, 5) selon la revendication 8, dans laquelle des barres de fixation (34) sont fixées à l'organe tubulaire (30), les barres de fixation s'étendant axialement dans un corps de béton (25) et assurant un attachement sécurisé du raccord d'extrémité (21, 22) à la section de pieu en béton (3, 4, 5).
  10. Section de pieu en béton (3, 4, 5) selon la revendication 8 ou 9, dans laquelle l'organe tubulaire (30) peut en outre être pourvu d'une couche ou zone de déformation (38) agencée radialement à l'extérieur de la paroi latérale de l'organe tubulaire pour absorber des déformations en expansion par exemple dans le sens radial de l'organe tubulaire (30) lorsqu'un tube est enfoncé dans l'attachement à ajustement par enfoncement dans l'organe tubulaire (30).
  11. Section de pieu en béton (3, 4, 5) selon l'une quelconque des revendications précédentes, dans laquelle les organes de tube peuvent être constitués d'acier et/ou d'un matériau de grande résistance correspondant.
  12. Section de pieu en béton (3, 4, 5) selon l'une quelconque des revendications précédentes, dans laquelle ledit raccord d'extrémité (21, 22) comprend en outre un ensemble respectif de parois latérales (27) qui s'étendent de la plaque d'extrémité respective (23) dans un sens vers le centre axial de la section de pieu en béton (3, 4, 5).
  13. Section de pieu en béton (3, 4, 5) selon la revendication 12, dans laquelle au moins l'une desdites parois latérales (27) comprend des trous d'inspection (28) pour s'assurer du niveau de remplissage de béton au cours du processus de coulage de la section de pieu en béton (3, 4, 5) et des raccords d'extrémité (21, 22).
  14. Section de pieu en béton (3, 4, 5) selon l'une quelconque des revendications précédentes, dans laquelle ledit raccord extrémité (21, 22) est intégré ou moulé dans une extrémité axiale de ladite section de pieu en béton (3, 4, 5).
EP13160418.3A 2011-09-21 2011-09-21 Pieu pour fondation profonde et procédé de fourniture de pieu Active EP2623676B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DK13160418.3T DK2623676T3 (en) 2011-09-21 2011-09-21 Pile for piling of deep foundation and a method for providing a pole
EP13160418.3A EP2623676B1 (fr) 2011-09-21 2011-09-21 Pieu pour fondation profonde et procédé de fourniture de pieu

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP13160418.3A EP2623676B1 (fr) 2011-09-21 2011-09-21 Pieu pour fondation profonde et procédé de fourniture de pieu
EP20110182227 EP2573274B1 (fr) 2011-09-21 2011-09-21 Pieu pour fondation profonde et procédé de fourniture de pieu

Related Parent Applications (3)

Application Number Title Priority Date Filing Date
EP11182227.6 Division 2011-09-21
EP20110182227 Division EP2573274B1 (fr) 2011-09-21 2011-09-21 Pieu pour fondation profonde et procédé de fourniture de pieu
EP20110182227 Division-Into EP2573274B1 (fr) 2011-09-21 2011-09-21 Pieu pour fondation profonde et procédé de fourniture de pieu

Publications (3)

Publication Number Publication Date
EP2623676A2 EP2623676A2 (fr) 2013-08-07
EP2623676A3 EP2623676A3 (fr) 2014-07-30
EP2623676B1 true EP2623676B1 (fr) 2015-12-09

Family

ID=44651491

Family Applications (2)

Application Number Title Priority Date Filing Date
EP20110182227 Active EP2573274B1 (fr) 2011-09-21 2011-09-21 Pieu pour fondation profonde et procédé de fourniture de pieu
EP13160418.3A Active EP2623676B1 (fr) 2011-09-21 2011-09-21 Pieu pour fondation profonde et procédé de fourniture de pieu

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP20110182227 Active EP2573274B1 (fr) 2011-09-21 2011-09-21 Pieu pour fondation profonde et procédé de fourniture de pieu

Country Status (2)

Country Link
EP (2) EP2573274B1 (fr)
DK (2) DK2623676T3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI127619B (fi) * 2017-02-01 2018-10-31 Jorma Leino Paalukärki ja menetelmä paalukärjen valmistamiseksi

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1009856A (en) * 1974-12-02 1977-05-10 West's Piling And Construction Company Limited Pile connecting device
JPS61117322A (ja) * 1984-11-13 1986-06-04 Chubu Electric Power Co Inc 補強くい
GB2172038B (en) * 1985-03-06 1989-01-18 Roxbury Ltd Improvements in pile sections
GB9315813D0 (en) * 1993-07-30 1993-09-15 Roxbury Ltd Improvements in or relating to pile joints
GB2363150A (en) * 2000-05-20 2001-12-12 Roxbury Ltd Spigot and socket pile section connection

Also Published As

Publication number Publication date
EP2623676A3 (fr) 2014-07-30
EP2573274A1 (fr) 2013-03-27
DK2623676T3 (en) 2016-03-14
DK2573274T3 (da) 2015-03-23
EP2623676A2 (fr) 2013-08-07
EP2573274B1 (fr) 2015-01-07

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