EP0097525A2 - Piles - Google Patents

Piles Download PDF

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Publication number
EP0097525A2
EP0097525A2 EP83303569A EP83303569A EP0097525A2 EP 0097525 A2 EP0097525 A2 EP 0097525A2 EP 83303569 A EP83303569 A EP 83303569A EP 83303569 A EP83303569 A EP 83303569A EP 0097525 A2 EP0097525 A2 EP 0097525A2
Authority
EP
European Patent Office
Prior art keywords
pile
sharp
members
piles
ground
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
EP83303569A
Other languages
German (de)
French (fr)
Other versions
EP0097525A3 (en
EP0097525B1 (en
Inventor
Chi-Lung Hsiao
Original Assignee
Wang Su-Jen
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 Wang Su-Jen filed Critical Wang Su-Jen
Priority to AT83303569T priority Critical patent/ATE22332T1/en
Publication of EP0097525A2 publication Critical patent/EP0097525A2/en
Publication of EP0097525A3 publication Critical patent/EP0097525A3/en
Application granted granted Critical
Publication of EP0097525B1 publication Critical patent/EP0097525B1/en
Expired legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22Piles
    • E02D5/54Piles with prefabricated supports or anchoring parts; Anchoring piles

Definitions

  • This invention relates to piles, that is pointed stakes, posts or like longitudinal members drivable into the ground for use as supports or strengthening members.
  • An object of this invention is to-increase the bearing load capacity of piles.
  • a pile comprising a hollow, rigid tubular body having along its length a plurality of apertures and a plurality of sharp members pivotally mounted on the body for outward movement through the apertures upon impact within the tubular member.
  • a non-core pile 1 as shown in Figure 1, includes in its walls a plurality of evenly spaced holes. To the upper edge of each hole a sharp member is pivotally attached.
  • the sharp members are moved through the holes by a hammer E or other heavy tool, which is passed through the pile and they are urged into the ground surrounding the pile, fixing the pile.
  • the hammer E has a smaller outer diameter than the internal diameter of the pile.
  • the sharp members are fin-shaped and comprise an attachment portion including a hole for receiving a bolt 7 via an elongate member having an eye embedded in the edge of the corresponding aperture in the pile. Alternatively, the sharp members may be fixed on the inside wall of the pile.
  • the sharp member further includes an arcuate sharp edge for cutting into the ground with a strenthened pointed portion 6.
  • a hole is made in the ground of slightly greater size than the pile and the pile is inserted into it, using a crib B, with the sharp members retracted.
  • the hammer E is then employed to force the sharp members outwardly and into the surrounding ground.
  • the interior of the pile is filled with liquid concrete C or similar filler material.
  • Piles according to the invention have been tested and found to be very effective. Piles were inserted into the ground and left for three days. A load was applied to each pile and increased eight times at six hourly intervals following settlement of the pile.
  • the maximum load is the load which corresponds to 1.5 cm of movement of the pile.
  • result 2. shows that a pile according to this invention can bear about the same load as a conventional pile of twice its length. 0.5 - 0.56 of the bearing energy of a conventional pile is required for the same maximum load capacity.

Landscapes

  • 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)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

Piles for acting as supports or strengthening members comprise hollow, rigid tubular members including a pointed end and a plurality of holes in which are mounted pivotable sharp members 4. The pile is inserted into a pre-formed hole in the ground with the sharp members 4 retracted and a heavy tool is passed through the pile to force the sharp members 4 outwardly into the ground. The piles have much improved bearing load capacity.

Description

  • This invention relates to piles, that is pointed stakes, posts or like longitudinal members drivable into the ground for use as supports or strengthening members.
  • An object of this invention is to-increase the bearing load capacity of piles.
  • According to the invention, I propose a pile comprising a hollow, rigid tubular body having along its length a plurality of apertures and a plurality of sharp members pivotally mounted on the body for outward movement through the apertures upon impact within the tubular member.
  • Tests have shown that these piles have improved bearing load capacity.
  • Embodiments of this invention are described by way of example, with reference to the drawings, in which:
    • Figure 1 is a sectional view through a pile according to this invention;
    • Figure 2 is a front view of the device shown in Figure 1;
    • Figure 3 is a side view of the device shown in Figure 2;
    • Figure 4 is an exploded view of a sharp member used. in the device shown in Figure 1;
    • Figure 5 shows a hole into which a pile according to this invention may be driven;
    • Figures 6 to 8 show a cast-in-situ pile according to this invention; and
    • Figure 9 is a perspective view of the pile shown in Figure 1 according to this invention.
  • A non-core pile 1, as shown in Figure 1, includes in its walls a plurality of evenly spaced holes. To the upper edge of each hole a sharp member is pivotally attached.
  • The sharp members are moved through the holes by a hammer E or other heavy tool, which is passed through the pile and they are urged into the ground surrounding the pile, fixing the pile. The hammer E has a smaller outer diameter than the internal diameter of the pile.
  • The sharp members are fin-shaped and comprise an attachment portion including a hole for receiving a bolt 7 via an elongate member having an eye embedded in the edge of the corresponding aperture in the pile. Alternatively, the sharp members may be fixed on the inside wall of the pile. The sharp member further includes an arcuate sharp edge for cutting into the ground with a strenthened pointed portion 6.
  • In use, a hole is made in the ground of slightly greater size than the pile and the pile is inserted into it, using a crib B, with the sharp members retracted. The hammer E is then employed to force the sharp members outwardly and into the surrounding ground. Next, the interior of the pile is filled with liquid concrete C or similar filler material.
  • Piles according to the invention have been tested and found to be very effective. Piles were inserted into the ground and left for three days. A load was applied to each pile and increased eight times at six hourly intervals following settlement of the pile.
  • 1. Conventional pre-reinforced non-core pile:
    • Pile diameter lm
    • Pile length 12 m
    • Maximum load 220 ton.
    2. Pile according to this invention:
    • Pile diameter 1m
    • Pile length 6 m
    • Maximum load 223 ton
    3. Conventional pre-reinforced non-core pile:
    • Pile diameter 1m
    • Pile length 3m
    • Maximum load 43 ton.
    4. Pile according to this invention:
    • Pile diameter 1m
    • Pile length 3m
    • Maximum load 89 ton.
  • The maximum load is the load which corresponds to 1.5 cm of movement of the pile. Thus, result 2. shows that a pile according to this invention can bear about the same load as a conventional pile of twice its length. 0.5 - 0.56 of the bearing energy of a conventional pile is required for the same maximum load capacity.
  • Thus, approximately half the filling material is needed, half the pile material and 50 - 65% of the number of sharp members. Less work is also needed in preparing the hole for the pile and in transporting the pile. The slender-ratio (kl ) of the pile is lower r and so control is easier.

Claims (4)

1. A pile comprising a hollow, rigd tubular body having along its length a plurality of apertures and a plurality of sharp members pivotally mounted on the body for outward movement through the apertures upon impact within the tubular member.
2. A pile according to claim 1, wherein the outermost portion of the sharp member has curved sides and a pointed end.
3. A pile according to claim 1 or 2, wherein the interior of the pile is adapted to be occupied by concrete or other similar filler material.
4. A pile according to claim 1, 2 or 3, wherein the sharp members are adapted to be forced outwardly upon passage of a heavy tool through the interior of the tubular body.
EP83303569A 1982-06-21 1983-06-21 Piles Expired EP0097525B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83303569T ATE22332T1 (en) 1982-06-21 1983-06-21 PILES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US39019982A 1982-06-21 1982-06-21
US390199 1982-06-21

Publications (3)

Publication Number Publication Date
EP0097525A2 true EP0097525A2 (en) 1984-01-04
EP0097525A3 EP0097525A3 (en) 1984-02-08
EP0097525B1 EP0097525B1 (en) 1986-09-17

Family

ID=23541513

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83303569A Expired EP0097525B1 (en) 1982-06-21 1983-06-21 Piles

Country Status (4)

Country Link
EP (1) EP0097525B1 (en)
AT (1) ATE22332T1 (en)
DE (1) DE3366260D1 (en)
GB (1) GB2123067B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4637757A (en) * 1984-10-12 1987-01-20 Chevron Research Company Barbed anchor pile
US4733994A (en) * 1984-04-06 1988-03-29 Simanjuntak Johan H Driven pile with transverse broadening in situ
US4889451A (en) * 1984-04-06 1989-12-26 Simanjuntak Johan H Driven pile with transverse broadening in situ
GB2414032A (en) * 2004-05-11 2005-11-16 Shire Structures Ltd Pile with adjustable level of friction / bearing
WO2022055358A1 (en) * 2020-09-14 2022-03-17 Nader Hassavari Anchor assembly
LU502585B1 (en) * 2022-02-10 2023-08-10 Univ Jiangsu Open Prefabricated pipe pile suitable for soft soil stratum to effectively enhance bearing capacity and construction method thereof

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL76557A0 (en) * 1985-10-03 1986-02-28 Lipsker Eng Method relating to pile arrangement
CN104110027B (en) * 2013-12-02 2016-01-13 华北水利水电大学 Tool-type uplift pile

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1982687A (en) * 1931-05-29 1934-12-04 James J O'brien Pile
FR1153746A (en) * 1955-06-06 1958-03-20 Braithwaite & Company Engineer Flare base for foundations, especially for the establishment of piles
GB861816A (en) * 1957-06-04 1961-03-01 Nicolas Kondratsky Improvements in or relating to foundation piles and the like
US3763655A (en) * 1972-05-02 1973-10-09 Lois Edwards Piling with extendable anchor legs
DE2436093A1 (en) * 1974-07-24 1976-02-12 Mannesmann Roehren Werke Ag BUMP POST WITH ADAPTABLE SPREADERS

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1982687A (en) * 1931-05-29 1934-12-04 James J O'brien Pile
FR1153746A (en) * 1955-06-06 1958-03-20 Braithwaite & Company Engineer Flare base for foundations, especially for the establishment of piles
GB861816A (en) * 1957-06-04 1961-03-01 Nicolas Kondratsky Improvements in or relating to foundation piles and the like
US3763655A (en) * 1972-05-02 1973-10-09 Lois Edwards Piling with extendable anchor legs
DE2436093A1 (en) * 1974-07-24 1976-02-12 Mannesmann Roehren Werke Ag BUMP POST WITH ADAPTABLE SPREADERS

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4733994A (en) * 1984-04-06 1988-03-29 Simanjuntak Johan H Driven pile with transverse broadening in situ
US4813816A (en) * 1984-04-06 1989-03-21 Simanjuntak Johan H Driven pile with transverse broadening in situ
US4889451A (en) * 1984-04-06 1989-12-26 Simanjuntak Johan H Driven pile with transverse broadening in situ
US4637757A (en) * 1984-10-12 1987-01-20 Chevron Research Company Barbed anchor pile
GB2414032A (en) * 2004-05-11 2005-11-16 Shire Structures Ltd Pile with adjustable level of friction / bearing
GB2414032B (en) * 2004-05-11 2008-12-10 Shire Structures Ltd Improvements in or relating to piles
WO2022055358A1 (en) * 2020-09-14 2022-03-17 Nader Hassavari Anchor assembly
LU502585B1 (en) * 2022-02-10 2023-08-10 Univ Jiangsu Open Prefabricated pipe pile suitable for soft soil stratum to effectively enhance bearing capacity and construction method thereof

Also Published As

Publication number Publication date
GB2123067A (en) 1984-01-25
GB8316822D0 (en) 1983-07-27
EP0097525A3 (en) 1984-02-08
GB2123067B (en) 1986-01-02
ATE22332T1 (en) 1986-10-15
EP0097525B1 (en) 1986-09-17
DE3366260D1 (en) 1986-10-23

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