EP0891454A1 - Clampjoint for concrete piles - Google Patents
Clampjoint for concrete pilesInfo
- Publication number
- EP0891454A1 EP0891454A1 EP97901102A EP97901102A EP0891454A1 EP 0891454 A1 EP0891454 A1 EP 0891454A1 EP 97901102 A EP97901102 A EP 97901102A EP 97901102 A EP97901102 A EP 97901102A EP 0891454 A1 EP0891454 A1 EP 0891454A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- joint
- locking
- insert pin
- length
- pile
- 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
Links
- 239000004567 concrete Substances 0.000 title claims abstract description 11
- 206010023230 Joint stiffness Diseases 0.000 claims abstract description 3
- 230000000694 effects Effects 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000007858 starting material Substances 0.000 abstract description 4
- 239000011150 reinforced concrete Substances 0.000 abstract description 2
- 238000005266 casting Methods 0.000 abstract 1
- 238000003466 welding Methods 0.000 description 7
- 210000001503 joint Anatomy 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- 238000003754 machining Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 2
- 206010010254 Concussion Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009514 concussion Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
Definitions
- the object of the invention is a stiff adjoint piece for joining concrete piles, particularly reinforced piles, end to end so that those ends of the concrete piles which are joined together comprise base plates that correspond to the cross-section of the pile, the joining means being attached to the base plate and consisting of: projecting locking bars which comprise broad ends provided with at least one stop face pointing towards the said base plate; of locking blocks on the counterpart, provided with a cavity that receives the locking bar, and with a groove transversal to the length of the locking bars, the groove extending as a toroid around the cavity, and with a hole extending from this groove at least approximately in a tangential direction; and of an insert pin which, when the pile joint is made, is driven into the hole so that it turns around the locking bar in the cavity, guided by the circumferential face of the groove, whereby it is simultaneously locked permanently in place because of plastical deformation.
- clampjoints in these earlier constructions had to be welded to the base plate by using load-bearing seams, whereby it was necessary to use thick base plates because of thermal strain.
- the disengagement or loosening of the joint during driving down again caused all kinds of other problems and, thus, different costs.
- the object of the invention is to provide a simpler, stiff adjoint piece for reinforced piles which does not have the disadvantages of the earlier known, corresponding joints.
- a more detailed object of the invention is to provide a stiff joint with low material costs which can be manufactured with low labour costs.
- Another object of the invention is to provide a pile joint with clamping which will not become loose even after a great number of strikes.
- Another object of the invention is to provide a pile joint solution with clamping means to which reinforcement bars can be attached by threading or welding.
- Another object of the invention is to provide a pile joint solution which simply provides a tight mutual joint for the piles.
- the pile joint according to the invention can be used to obtain numerous advantages. Because of the simple construction, considerable savings are obtained in material and labour costs. A clampjoint is obtained which does not become loose even after a lot of striking because a very large locking deformation is created in the insert pin when it is installed in place. This construction also prevents disadvantages caused by water which freezes in the lock housing on the pile-driving site when the joint is made. In addition, a clampjoint is provided which creates a tight joint between the piles, both in a case where the locking block is attached to the inner face of the end part, and particularly in a case where the locking block forms a stop face or a part of it for the joint.
- Fig. 1 is a general top view of the end of a reinforced concrete pile provided with the joint members according to the invention, taken in direction I of Figs. 2 and 3, and as a partly cut view along plane II-II of Figs. 2 and 3.
- Fig. 2 presents a detailed view of the members providing the joint according to the invention as a longitudinal section of the pile along plane III-III of Fig. 1, as the first embodiment thereof.
- Fig. 3 presents a detailed view of the members providing the joint according to the invention as a longitudinal section of the pile along plane III-III of Fig. 1, as the second embodiment thereof.
- Fig. 4 presents the embodiment according to Fig. 3 as an otherwise similar but smaller view than in Fig. 3 with the ends of the pile apart.
- each joint bisegment comprises the same amount of female joint parts and male joint parts placed symmetrically so that two pile ends provided with similar joint bisegments are placed tightly against one another.
- Fig. 1 shows one such embodiment comprising female joint parts in two opposite corners and male joint parts in the two other opposite corners. Other arrangements can also be used.
- the end of the pile comprises, in a conventional way per se, base plate 5 with the same cross-sectional shape as the pile, for example square, from which margin collar 7 on the level of the pile outer surface generally projects to the side of the pile, whereby a box-like part is formed, covering the end of the pile, and base plate 5 constituting the end face of the pile. Furthermore, the pile comprises, inside the concrete, at least longitudinal reinforcement bars or starter bars 6.
- Fig. 2 presents an embodiment comprising base plate 5 which is provided with holes 10 through which only locking bars 2 and particularly their wide outer ends 20 can be accommodated.
- Locking blocks 3 are attached, against holes 10, to base plate 5 on its surface 21 which is inside the concrete pile and thus points away from the other joint bisegment coming to the joint.
- Locking block 3 is provided with a hole or cavity 9 through which locking bar 2 can go, and which is aligned with hole 10 of the base plate. In this way, the tensile stress that is caused on the locking blocks by joint 1 is exerted directly to base plate 5, which is an advantage of this embodiment.
- Starter bars 6 in the longitudinal direction of the pile are attached directly to locking blocks 3 by welding or threading.
- locking bars 2 run through the holes in the base plate and are attached directly to starter bars 6 by welding or threading.
- the locking blocks and the locking bars are generally also welded to the base plate, as shown in the figures.
- locking block 3 is provided with groove 8 that surrounds the entire cavity 9 in a toroid-like way on the circumferential face of the cavity, the circumference of the groove being transversal and typically pe ⁇ endicular to the length of the locking bar and thus to the length of the pile.
- this groove comprises annular stop face 24 which points away from end plate 5 of said joint bisegment lb, i.e., towards the interior of the pile.
- the stop face is preferably planar and typically pe ⁇ endicular to length L of the pile.
- Locking bar 2 is preferably provided with groove 1 1 that is transversal to the length of the pin and thus to the length of the pile, the groove comprising annular stop face 21 which points towards the base plate to which locking bar 2 is attached.
- grooves 8 and 1 1 are placed against one another, forming a circumferential channel that surrounds locking bar 2, the cross-sectional shape of the channel corresponding to the cross-sectional shape of insert pin 4.
- the cross-section of the insrt pin and the diameter and location of grooves 8 and 1 1 are dimensioned so that the insert pin is tightly placed, in grooves 8, 1 1, distinctly between stop face 24 of locking block 3 and stop face 21 of locking bar 2.
- insert pin 4 clamps joint bisegments la and lb of the piles to be joined towards one another, forming a tight pile joint 1 without clearance.
- the other surfaces of grooves 8 and 1 1 are only significant in shaping the locking pin when it is driven in place when the joint is made.
- This design provides a tight and accurate guiding for insert pin 4 and, thus, a strong joint between the ends of the piles.
- locking bar 2 it is also possible to only use its head 20 which is wider than its arm and which comprises the said stop face 21 ; this embodiment not being shown in the figures, whereby the insert pin penetrates into the circumferential channel formed by groove 8 of the locking block and stop face 21 , as described above.
- this structure is not quite as reliable as the one formed by aligned grooves 8, 1 1.
- each locking block 3 comprises hole 12 which extends from groove 8 essentially in the tangential direction to the outer face of the pile or to the outer face formed by sheet casing 7.
- This hole is preferably lined, for example, with metal tube 13 with respect to the concrete.
- Insert pins 4 according to the invention are long or bar-like parts which are straight before installing in place.
- the length of the insert pin is at least as high as depth H of the hole and the essential part of the circumferential length of the locking block groove 8 together; typically, the length of the insert pin is as high as the depth of the hole and half of the said circumferential length together.
- the length of the insert pin is preferably as close as possible to the sum of the hole depth and the said circumferential length.
- the cross- sectional shape of insert pin 4 remains, at least with respect to the essential part of its length, unchanging or integral, starting from initial end 22 of the insert pin which is pushed ahead through hole 12 to groove 8.
- the cross-section of the insert pin is preferably unchanging along the portion of its length that corresponds to the length that bends in accordance with groove 8. For example, if the insert pin is so long that it bends and fills the entire circumferential length of groove 8, the cross-section of the pin is mainly unchanging along the length which is as long as the circumferential length.
- the cross-sectional shape and/or the cross-sectional area of the insert pin can vaiy to the extent of hole 12, i.e., starting from the other ram end; the pin is preferably thicker along this length.
- insert pin 4 better withstands the push exerted on the ram end which is used to place the pin in the channel.
- the cross-section of insert pin 4 is round, angular, or oval.
- the cross- section of insert pin 4 is preferably rectangular, whereby it comprises parallel, opposite surfaces 28a and 28b which are placed against said stop faces 21 and 24.
- the invention does not prevent the insert pin from being slightly sphenoid in the longitudinal direction, whereby the pin penetrates easier into its place and clamps the pile ends towards one another. In this case also, the cross-section remains unchanged.
- this wedge-sized property is arranged to be formed between opposite surfaces 28a and 28b of the insert pin, whereby the wedge-sized property is placed between stop face 24 of the locking block and stop face 21 of the insert pin.
- the wedge-sized property extends approximately evenly along the entire length of the insert pin which is bent into a toroid and is small in quantity, for example, the angle of wedge between surfaces 28a and 28b is about 10° at the most, generally even smaller, such as less than 5° , possibly only 3° - 4° or 1° - 2°.
- insert pins 4 there is no wedge-sized property in insert pins 4 in the direction of the toroid diameter formed by grooves 8, 1 1, and thus of the plane of base plate 5, but the insert pins have even widths on the above- mentioned length, because the wedge-sized property is not advantageous here.
- the wedge-sized property is thus not the same as rounding or bevelling of the end of insert pin 4, which guide and facilitate the penetration of the insert pin into the grooves and which aie presented in Fig. 1. In this way, the insert pin can be used to provide the joint described below.
- Piles are extended by pushing the piles provided with the above-mentioned joining parts together end to end, whereby locking bars 2 penetrate from locking blocks 9.
- base plates 5 of pile joints 1 squeezing tightly together and, in the embodiments of Figs. 3 and 4, front surfaces 26 of locking blocks 3 squeezing tightly against outer surface 27a of base plate 5 of the opposite joint bisegment la, the joint is clamped by driving insert pins 4 according to the invention into each clampjoint which is comprised of a locking bar and locking blocks.
- the locking bar 1 it is shaped according to the channel formed by grooves 8 and 1 1 , particularly guided by the circumferential face of groove 8 in the locking block, into an annular strap around locking bar 2, as shown by the line of dots and dashes in the upper right hand corner in Fig. 1.
- the locking bar should fill an essential part of the circumferential length surrounding locking bar 2, whereby half of the circumferential length can be considered minimum.
- insert pin 4 locks joint bisegments la and lb together at said stop faces 21 and 24 in a phenoidal way, and, because of the large plastical deformation, it is locked into the joint without becoming loose, whereby the joint stays good even after numerous strokes.
- Figs. 3 and 4 present a particularly preferred embodiment of the invention. It comprises holes 25 made for locking blocks 3 in base plate 5, the diameter of the holes being so dimensioned that the locking block fits through the base plate at least at the end part which points outwards from this joint bisegment lb.
- the locking block is welded to the base plate at a spot where front surface 26 of the locking block is flushed with outer surface 27b of the base plate.
- it is not necessary to use a machined plate as the base plate of either joint bisegment la and/or lb but, generally, a piece cut from a plate can be used as such.
- the thickness of the base plate has no significance because distance T2 between stop face 24 of locking block 3 and front surface 26, and distance T 1 between stop face 21 of the locking bar and shoulder 29 define the position of the stop faces in joint 1 , no matter what the thickness of base plate 5 is. Consequently, it is necessary to accurately machine only locking blocks 3 and locking bars 2 in this structure.
- the good clamping accuracy of joint 1 mentioned earlier can be provided by this structure in a simple and advantageous manner.
- a shoulder which is not presented in the figures can be provided on the outer circumference of the locking block, pressing against the above-mentioned inner surface 21 of the base plate.
- front surface 26 of the locking block can be arranged at such a distance from this shoulder that it is always placed at least level with outer surface 27b of the base plate or so that it slightly projects therefrom.
- base plate 5 and a slightly too long locking block 3 attached thereto can be machined from the outside, after the weldings, to form an integral surface 26, 27b, whereby the spot of welding is controlled from stop face 24. This requires machining but less than in prior art solutions, and the accuracy is very good because welding can no longer influence the accuracy.
- the insert pin can be a self-locking, annular spring.
- the grooves of the locking means can have a rectangular cross-section, they can be shaped like parts of a polygon or they can be round or V-shaped and their longitudinal section can be straight or V-shaped.
- the insert pins have the same or slightly modified cross- section and/or longitudinal section so that a desired clamping and plastical deformation aie achieved.
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
- Joining Of Building Structures In Genera (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI961552 | 1996-04-09 | ||
FI961552A FI961552A0 (en) | 1996-04-09 | 1996-04-09 | Laosfog Foer betongpaolar |
PCT/FI1997/000029 WO1997038173A1 (en) | 1996-04-09 | 1997-01-23 | Clampjoint for concrete piles |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0891454A1 true EP0891454A1 (en) | 1999-01-20 |
EP0891454B1 EP0891454B1 (en) | 2003-04-09 |
Family
ID=8545803
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97901102A Expired - Lifetime EP0891454B1 (en) | 1996-04-09 | 1997-01-23 | Clampjoint for concrete piles |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0891454B1 (en) |
AT (1) | ATE237036T1 (en) |
AU (1) | AU1446697A (en) |
DE (1) | DE69720708D1 (en) |
FI (1) | FI961552A0 (en) |
NO (1) | NO307842B1 (en) |
SE (1) | SE508943C2 (en) |
WO (1) | WO1997038173A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010072772A1 (en) | 2008-12-23 | 2010-07-01 | Centrum Paele A/S | Pile extension |
US9739024B2 (en) | 2013-08-21 | 2017-08-22 | Chin Chai Ong | End plate for concrete piles |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AUPQ785600A0 (en) * | 2000-05-29 | 2000-06-22 | Chad, Walter Edward | Jointed pre-cast concrete piles |
CN2443997Y (en) * | 2000-10-11 | 2001-08-22 | 钟肇鸿 | Speed joint for pile of steel reinforced concrete |
CN2495685Y (en) * | 2001-08-01 | 2002-06-19 | 钟肇鸿 | Quick-action joint for prestressed concrete piles |
FI116474B (en) * | 2001-08-28 | 2005-11-30 | Emeca Oy | Connection of pieces such as reinforced concrete piles |
CN100348803C (en) * | 2004-11-16 | 2007-11-14 | 周兆弟 | Pile connecting buckle and its prefabricated unit |
CN100408762C (en) * | 2005-05-17 | 2008-08-06 | 周兆弟 | Elastic meshing body pile connecting fastener and prefab |
CN100408760C (en) * | 2005-05-17 | 2008-08-06 | 周兆弟 | Double-end inserting elastic meshing body pile connecting end plate and prefab |
CN100424276C (en) * | 2005-05-17 | 2008-10-08 | 周兆弟 | Double-end inserting expansion meshing body pile connecting fastener and prefab |
CN100424274C (en) * | 2005-05-17 | 2008-10-08 | 周兆弟 | Double-end inserting expansion meshing body pile connecting end plate and prefab |
CN100424275C (en) * | 2005-05-17 | 2008-10-08 | 周兆弟 | Double-end inserting elastic meshing body pile connecting fastener and prefab |
CN100408763C (en) * | 2005-05-17 | 2008-08-06 | 周兆弟 | Double-end expansion pile connecting end plate and prefab |
CN100408765C (en) * | 2005-05-17 | 2008-08-06 | 周兆弟 | Inserting pile-connecting end plate fastener and prefab |
CN100424277C (en) * | 2005-05-17 | 2008-10-08 | 周兆弟 | Double-end expansion hanging pile-connecting end plate fastener and prefab |
CN100424273C (en) * | 2005-05-17 | 2008-10-08 | 周兆弟 | Double-end expansion meshing body pile-connecting end plate and prefab |
CN100408764C (en) * | 2005-05-17 | 2008-08-06 | 周兆弟 | Inserting pile connecting fastener and prefab |
CN101519877B (en) * | 2008-03-17 | 2011-06-08 | 周兆弟 | Multi-headed fast tearing butt coupler and fabricated part |
FI8230U1 (en) * | 2008-11-17 | 2009-03-23 | Leimet Oy | Barring fuse structure |
CN102562029B (en) * | 2011-12-11 | 2015-09-09 | 贵州航天凯山石油仪器有限公司 | Ultrasonic transducer is avoided to rotate method and the ultrasonic transducer fastening structure of installation |
CN103386709B (en) * | 2013-07-25 | 2015-07-29 | 明业建设集团有限公司 | A kind of shockproof resistance to plucking bending resistance prefabricated pile and prefabricated pile manufacture craft |
CN108612098A (en) * | 2018-05-24 | 2018-10-02 | 江苏千汇轻量化技术研究院有限公司 | A kind of novel high-strength pipe pile joint device |
CN114482030B (en) * | 2021-10-28 | 2024-04-12 | 广州市建筑集团有限公司 | Mechanical tooth rapid pile extension device and pile extension method for PHC pipe pile |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE224114C1 (en) * | 1968-12-10 | |||
SE302929B (en) * | 1964-11-05 | 1968-08-05 | K Sjoestroem | |
US3422630A (en) * | 1967-12-21 | 1969-01-21 | Gaston Marier | Concrete pile construction |
FI852020L (en) * | 1985-05-21 | 1986-11-22 | Kari Kalevi Koivunen | SKARV FOER BETONGPAOLAR. |
FI76169C (en) * | 1986-10-27 | 1988-09-09 | Lohja Ab Oy | ANALYSIS OF THE PROCEDURE. |
-
1996
- 1996-04-09 FI FI961552A patent/FI961552A0/en not_active Application Discontinuation
- 1996-12-23 NO NO965558A patent/NO307842B1/en not_active IP Right Cessation
- 1996-12-23 SE SE9604758A patent/SE508943C2/en not_active IP Right Cessation
-
1997
- 1997-01-23 DE DE69720708T patent/DE69720708D1/en not_active Expired - Lifetime
- 1997-01-23 AU AU14466/97A patent/AU1446697A/en not_active Abandoned
- 1997-01-23 WO PCT/FI1997/000029 patent/WO1997038173A1/en active IP Right Grant
- 1997-01-23 AT AT97901102T patent/ATE237036T1/en not_active IP Right Cessation
- 1997-01-23 EP EP97901102A patent/EP0891454B1/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9738173A1 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010072772A1 (en) | 2008-12-23 | 2010-07-01 | Centrum Paele A/S | Pile extension |
EP2204498A1 (en) | 2008-12-23 | 2010-07-07 | Centrum Pæle A/S | Pile extension |
US9739024B2 (en) | 2013-08-21 | 2017-08-22 | Chin Chai Ong | End plate for concrete piles |
Also Published As
Publication number | Publication date |
---|---|
DE69720708D1 (en) | 2003-05-15 |
ATE237036T1 (en) | 2003-04-15 |
NO307842B1 (en) | 2000-06-05 |
SE9604758L (en) | 1997-10-10 |
AU1446697A (en) | 1997-10-29 |
NO965558D0 (en) | 1996-12-23 |
SE9604758D0 (en) | 1996-12-23 |
EP0891454B1 (en) | 2003-04-09 |
WO1997038173A1 (en) | 1997-10-16 |
SE508943C2 (en) | 1998-11-16 |
FI961552A0 (en) | 1996-04-09 |
NO965558L (en) | 1997-10-10 |
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