NL2031784B1 - A method for providing a concrete pile and a concrete pile - Google Patents

A method for providing a concrete pile and a concrete pile Download PDF

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Publication number
NL2031784B1
NL2031784B1 NL2031784A NL2031784A NL2031784B1 NL 2031784 B1 NL2031784 B1 NL 2031784B1 NL 2031784 A NL2031784 A NL 2031784A NL 2031784 A NL2031784 A NL 2031784A NL 2031784 B1 NL2031784 B1 NL 2031784B1
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NL
Netherlands
Prior art keywords
pile
concrete
section
head section
hollow
Prior art date
Application number
NL2031784A
Other languages
Dutch (nl)
Inventor
Willem Kool Martien
Maria Veenman Johannes
Original Assignee
Hpschroefpaal Beheer B V
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Publication date
Application filed by Hpschroefpaal Beheer B V filed Critical Hpschroefpaal Beheer B V
Priority to NL2031784A priority Critical patent/NL2031784B1/en
Priority to EP23171385.0A priority patent/EP4273327A1/en
Application granted granted Critical
Publication of NL2031784B1 publication Critical patent/NL2031784B1/en

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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
    • 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
    • E02D5/30—Prefabricated piles made of concrete or reinforced concrete or made of steel and concrete
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/02—Placing by driving

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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)

Abstract

A method for providing a reinforced hollow concrete pile for pile driving, the method comprises the steps of: providing a concrete beam having a hollow core, — removing a portion of concrete from a pile head section and/or a pile bottom section of the concrete beam to expose the hollow core, — placing a reinforcement in the hollow core of the pile head section and/or the pile bottom section, — filling the pile head section and/or the pile bottom section with a concrete mixture, — allowing the concrete to set to yield the reinforced hollow concrete pile for pile driving.

Description

A method for providing a concrete pile and a concrete pile
The present invention relates to a method for providing a reinforced hollow concrete pile for pile driving.
Concrete piles are used as part of a foundation in order to be able to build a building on ground that is for example soft or wet.
The foundation provides support for the building on the ground and transfers loads of the building to the ground.
It is known to use piles comprising a hollow middle section as opposed to piles of solid concrete.
However, a disadvantage of these sections is that they are not suitable for introduction into the ground by pile driving since they are not able to withstand an impact of a hammer head.
It is an object of the present invention to provide a concrete pile that is suitable for pile driving and which is relatively cheap to produce and/or easy to handle.
To this end, a method according to the preamble is characterized in that the method comprises the steps of: providing a concrete beam having a hollow core, =~ removing a portion of concrete from a pile head section and/or a pile bottom section of the concrete bean, - placing a reinforcement in the pile head section and/or the pile bottom section, ~ filling the pile head section and/or the pile bottom section with a concrete mixture, — allowing the concrete to set to yield the reinforced hollow concrete pile for pile driving.
In this way a pile is provided which is cheaper to produce while being suitable for pile driving. A volume of the hollow core is for example 20 or 30% of a total volume of the pile, thus saving concrete, weight and costs.
The concrete mixture comprises water, sand and cement in such proportions that the hollow concrete pile does not collapse.
Removing a portion of concrete from a pile head section and/or 3% the pile bottom section can be removing concrete from a side of the beam in the pile head section and/or bottom head section, thereby exposing the hollow core of the beam. It can also be removing all concrete from the pile head section and/or pile bottom section of the beam.
According to an embodiment, the concrete pile having a hollow core is provided by a wet casting method, a slip forming method or an extrusion method.
According to an embodiment, the concrete pile having a hollow core is provided by an extrusion method.
GB 994578 describes such an extrusion method for providing reinforced hollow concrete sections.
According to an embodiment, the concrete pile having a hollow core comprises rebars or tendon wires extending in a longitudinal direction of the pile.
The rebars or tendon wires provide the concrete pile with additional strength, so the piler may better withstand the impact of a hammer head during pile driving. When rebars or tendon wires are present, the reinforcement can be placed such that the rebars or tendon wires are located within a circumference of the reinforcement, or such that the rebars or tendon wires are located outside the circumference of the reinforcement.
According to an embodiment, the second concrete mixture is compacted after filling the pile head section and/or the pile bottom section with a second concrete mixture.
Compacting the second concrete mixture results in a stronger piler head and/or bottom, so the piler may better withstand the impact of a hammer head during pile driving. Compacting may for example be performed by shaking or vibration.
According to an embodiment, setting of the first concrete mixture and the second concrete mixture is facilitated by heating.
Heating the first and second concrete mixtures assists in accelerating setting of the concrete mixtures, so the piler may be produced faster. The heating is for example provided by a heating conduit extending along the setting piler.
According to an embodiment, the reinforcement comprises a metal helix.
A helix is easily introduced in the hollow core or wrapped around tendion wires, and a pitch of the helix may be adapted to a desired number to provide the required reinforcement. The helix of the pile head section may for example comprise 3-12 windings having a pitch of 1-10 cm. Preferably, the helix comprises 5-9 windings having a pitch of 4-5 cm.
According to an embodiment, after the step of allowing the first concrete mixture and the second concrete mixture to set, the reinforced hollow concrete beam is cut transversally at the level of the pile head section and/or pile bottom section.
In this way multiple reinforced hollow concrete piles may be produced in a single run.
According to an embodiment, the reinforced concrete pile is cut transversely at the level of the pile head section and/or pile bottom section such that mutiple reinforced hollow concrete piles are obtained from one concrete bean.
Finally, the present invention relates to a reinforced hollow concrete pile for pile driving,, wherein the pile extends in a first direction and comprises — a pile head section, — a pile bottom section, and ~ a hollow core extending in the first direction between the pile head section and the pile bottom section, wherein the pile head section and/or the pile bottom section comprises a reinforcement embedded in a concrete mixture.
According to an embodiment, the concrete pile having a hollow core comprises rebars or tendon wires extending in a longitudinal direction of the pile.
The rebars or tendon wires provide the concrete pile with additional strength, so the piler may better withstand the impact of a hammer head during pile driving. When rebars or tendon wires are present, the reinforcement can be placed such that the rebars or tendon wires are located within a circumference of the reinforcement, or such that the rebars or tendon wires are located cutside the circumference of the reinforcement.
According to an embodiment, the reinforcement is in the form of a metal spiral.
A spiral is easily introduced in the hollow core or wrapped around tendon wires, and a pitch of the spiral may be adapted to a desired number to provide the required reinforcement. The helix of the pile head section may for example comprise 3-12 windings having a pitch of 1-10 cm. Preferably, the helix comprises 5-9 windings having a pitch of 4-5 cm.
According to an embodiment, the pile head section extends over a length of 30-100 cm, preferably over a length of 40-70 cm, such as 60 cm.
According to an embodiment, the pile bottom section extends over a length of 10-50 cm, preferably over a length of 20-40 cm, such as 30 cm.
According to an embodiment, a diameter of the hollow core is 40-70% of a width of the reinforced hollow concrete pile, preferably 50-60%.
The present invention will now be illustrated with reference to the drawing where
Fig. 1A-1D show a process of providing a reinforced hollow pile according to an embodiment of the invention;
Fig. 2A shows a longitudinal cross section of a reinforced hollow pile;
Fig. 2B shows a cross section B-B of the reinforced hollow pile at a level of a middle section; and
Fig. 2C shows a cross section C-C of the reinforced hollow pile at a level of a middle section.
Fig. 1A shows a cross sectional view of a multitude of tendon wires 100 that extend in a longitudinal direction. The tendon wires 100 are provided above a supporting surface 110, under which heating conduits 120 extend. In this embodiment, the tendon wires 100 are arranged in sets of four tendon wires 100, such that of each set a first and a second tendon wire 100 are provided in a first plane substantially parallel to the supporting surface, and a third and a fourth tendon wire 100 are provided in a second plane substantially parallel to the supporting surface 110. Of each set of tendon wires 100 the first and the third tendon wire 100 are provided in a third plane substantially perpendicular to the supporting surface 110, and the second and the fourth tendon wire 100 in a fourth plane substantially perpendicular to the supporting surface 110.
Fig. 1B shows a cross section of the bottom part of a device 130 for providing a first concrete mixture 153. In this embodiment, the device 130 is an concrete extruder 130 provided with wheels 131 which enable the extruder 130 to drive in the longitudinal direction over the support surface 110 while extruding concrete. In this embodiment the extruder 130 comprises four screws 132. The extruder 130 is aligned such that each screw 132 is positioned substantially centered with respect to the four tendon wires 100 of each set of tendon wires 100. The first concrete mixture 153 is extruded by means of four sets of dies and mandrels which are shaped to produce the required cross 5 section as shown in Fig. 1C. The four tendon wires 100 of a set of tendon wires 100 are embedded in the first concrete mixture. The extruder is furthermore provided with guiding surfaces 140 which are aligned with the upright side walls of the dies, that guide the first concrete mixture being extruded and assist in shaping a concrete profiled hollow beam 150 having a hollow core 151 as shown in Fig. 1C.
Fig. 1D shows a cross section of the concrete hollow beam 150 having a hollow core 151 at the level of a pile head and bottom section 152. A portion of concrete in the upper wall of the beam is removed from one or more pile head/bottom sections, such that the hollow core 151 of the concrete hollow beam 150 is exposed. One or more reinforcements 200 are then placed in the hollow core 151, and the hollow core 151 and the space of the removed wall part of the pile head/bottom section 152 is filled with a second concrete mixture 154, as shown in Figs. 2A and 2C. The concrete beam 150 is then heated by means of the heating conduits 120 and allowed to set to yield the reinforced hollow concrete beam 150. The beam 150 is then cut through at the locations of the reinforcement 200 in the pile head/bottom section(s), whereby multiple hollow reinforced piles are obtained having a reinforced head and a reinforced bottom.
Fig. ZA shows a longitudinal cross section of an end part of the finished reinforced hollow concrete pile 250 for pile driving.
Fig. 2B shows a cross section A-A of the reinforced hollow concrete pile 250 for pile driving at the level of a middle section between the pile head section 152 and a pile bottom section.
Fig. 2C shows a cross section C-C of the reinforced hollow concrete pile 250 for pile driving at the level of the pile head.
The pile head section 152 comprises the reinforcement 200 which extends in the longitudinal direction of the concrete pile 250 and which in this embodiment is in the form of a reinforcing metal helical wire 201 which is fixed in shape by means of wires 202 extending in the axial direction of the helix, and which are fixed to the helical wire 201. The hollow core 151 is filled with the second concrete mixture 154, resulting in the reinforcing metal helix 200 being embedded in the concrete mixture.
The middle section comprises the hollow core 151 extending between the pile head section 152 and the rile bottom section 152.

Claims (15)

ConclusiesConclusions 1. Werkwijze voor het verschaffen van een versterkte holle betonnen paal voor heien, waarbij de werkwijze de volgende stappen omvat: het verschaffen van een betonnen balk met een holle kern, - het verwijderen van een gedeelte beton uit een paalkopsectie en/of een paalvoetsectie van de betonnen balk, - het plaatsen van een versterking in de paalkopsectie en/of de paalvoetsectie, - het vullen van de paalkopsectie en/of de paalvoetsectie met een betonmengsel, - het aan het beton toestaan uit te harden om de versterkte holle betonnen paal voor heien op te leveren.1. Method for providing a reinforced hollow concrete pile for driving, the method comprising the following steps: providing a concrete beam with a hollow core, - removing a portion of concrete from a pile head section and/or a pile base section of the concrete beam, - placing a reinforcement in the pile head section and/or the pile base section, - filling the pile head section and/or the pile base section with a concrete mixture, - allowing the concrete to harden to form the reinforced hollow concrete pile for to deliver piling. 2. Werkwijze volgens conclusie 1, waarbij de betonnen paal met een holle kern verschaft wordt middels een natte gietwerkwijze, een glijbekistingswerkwijze of een extrusiewerkwijze.Method according to claim 1, wherein the concrete pile with a hollow core is provided by means of a wet casting method, a sliding formwork method or an extrusion method. 3. Werkwijze volgens conclusie 2, waarbij de betonnen paal met een holle kern verschaft wordt middels een extrusiewerkwijze.Method according to claim 2, wherein the concrete pile with a hollow core is provided by means of an extrusion method. 4. Werkwijze volgens een van de voorgaande conclusies, waarbij de betonnen paal met een holle kern wapeningsstaven of spankabels omvat die zich in een longitudinale richting van de paal uitstrekken.Method according to any of the preceding claims, wherein the concrete pile with a hollow core comprises reinforcing bars or tension cables that extend in a longitudinal direction of the pile. 5. Werkwijze volgens een van de voorgaande conclusies, waarbij het tweede betonmengsel gecomprimeerd wordt na het vullen van de paalkopsectie en/of de paalvoetsectie met een tweede betonmengsel.5. Method according to any of the preceding claims, wherein the second concrete mixture is compressed after filling the pile head section and/or the pile base section with a second concrete mixture. 6. Werkwijze volgens een van de voorgaande conclusies, waarbij het uitharden van het eerste betonmengsel en het tweede betonmengsel bevorderd wordt middels verwarming.6. Method according to any of the preceding claims, wherein the hardening of the first concrete mixture and the second concrete mixture is promoted by heating. 7. Werkwijze volgens een van de voorgaande conclusies, waarbij de versterking een metalen helix omvat.7. Method according to any of the preceding claims, wherein the reinforcement comprises a metal helix. 8. Werkwijze volgens een van de voorgaande conclusies, waarbij na de stap van het aan het eerste betonmengsel en het tweede betonmengsel toestaan uit te harden, de versterkte holle betonnen balk transversaal ter hoogte van de paalkopsectie en/of paalvoetsectie gesneden wordt.A method according to any one of the preceding claims, wherein, after the step of allowing the first concrete mixture and the second concrete mixture to harden, the reinforced hollow concrete beam is cut transversely at the pile head section and/or pile base section. 9. Werkwijze volgens conclusie 8, waarbij de versterkte betonnen paal zodanig transversaal ter hoogte van de paalkopsectie en/of paalvoetsectie gesneden wordt dat meerdere versterkte holle betonnen palen uit één betonnen balk verkregen worden.9. Method according to claim 8, wherein the reinforced concrete pile is cut transversely at the pile head section and/or pile base section in such a way that multiple reinforced hollow concrete piles are obtained from one concrete beam. 10. Versterkte holle betonnen paal voor heien, waarbij de paal zich in een eerste richting uitstrekt en het volgende omvat: - een paalkopsectie, - een paalvoetsectie, en - een holle kern die zich in de eerste richting tussen de paalkopsectie en de paalvoetsectie uitstrekt, waarbij de paalkopsectie en/of de paalvoetsectie een versterking omvat die in een betonmengsel ingebed is.10. Reinforced hollow concrete pile for driving, wherein the pile extends in a first direction and comprises: - a pile head section, - a pile base section, and - a hollow core extending in the first direction between the pile head section and the pile base section, wherein the pile head section and/or the pile base section comprises a reinforcement that is embedded in a concrete mixture. 11. Betonnen paal volgens conclusie 10, waarbij de betonnen paal met een holle kern wapeningsstaven of spandraden omvat die zich in een longitudinale richting van de paal uitstrekken.11. Concrete pile according to claim 10, wherein the concrete pile with a hollow core comprises reinforcing bars or tension wires extending in a longitudinal direction of the pile. 12. Betonnen paal volgens een van de conclusies 10 of 11, waarbij de versterking in de vorm van een metalen spiraal is.12. Concrete pile according to one of claims 10 or 11, wherein the reinforcement is in the form of a metal spiral. 13. Betonnen paal volgens een van de conclusies 10-12, waarbij de paalkopsectie zich over een lengte van 30-100 cm, bij voorkeur over een lengte van 40-70 cm, zoals 60 cm uitstrekt.13. Concrete pile according to any one of claims 10-12, wherein the pile head section extends over a length of 30-100 cm, preferably over a length of 40-70 cm, such as 60 cm. 14. Betonnen paal volgens een van de conclusies 10-13, waarbij de paalvoetsectie zich over een lengte van 10-50 cm, bij voorkeur over een lengte van 20-40 cm, zoals 30 cm uitstrekt.14. Concrete pile according to any one of claims 10-13, wherein the pile base section extends over a length of 10-50 cm, preferably over a length of 20-40 cm, such as 30 cm. 15. Betonnen paal volgens een van de conclusies 10-14, waarbij een diameter van de holle kern 40-70% van een breedte van de versterkte holle betonnen paal, bij voorkeur 50-60% 1s.15. Concrete pile according to any one of claims 10-14, wherein a diameter of the hollow core is 40-70% of a width of the reinforced hollow concrete pile, preferably 50-60% 1s.
NL2031784A 2022-05-05 2022-05-05 A method for providing a concrete pile and a concrete pile NL2031784B1 (en)

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NL2031784A NL2031784B1 (en) 2022-05-05 2022-05-05 A method for providing a concrete pile and a concrete pile
EP23171385.0A EP4273327A1 (en) 2022-05-05 2023-05-03 A method for providing a concrete pile and a concrete pile

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB994578A (en) 1963-01-25 1965-06-10 Spiroll Corp Ltd A machine for extruding a hollow cored concrete product
NL1031876C2 (en) * 2005-05-25 2007-01-04 Betonson B V Securing reinforcing band around concrete pile, comprises securing band around set pile and then tightening or pressing it into place
WO2010147306A2 (en) * 2009-06-19 2010-12-23 (주)하경엔지니어링 Synthetic phc pile, production method of synthetic phc pile and construction process of synthetic phc pile
KR101777760B1 (en) * 2016-11-03 2017-09-26 한국도로공사 PHC Pile comprising Sprial Hoop
CN111472352A (en) * 2020-05-18 2020-07-31 天津大学建筑设计研究院 Separated reinforcement pipe pile and reinforcement method and construction method thereof
CN211898332U (en) * 2020-02-28 2020-11-10 许顺良 Prefabricated building structure
CN114045822A (en) * 2021-11-19 2022-02-15 无锡市大筑岩土技术有限公司 Anti-pulling hollow pile and construction method thereof

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB994578A (en) 1963-01-25 1965-06-10 Spiroll Corp Ltd A machine for extruding a hollow cored concrete product
NL1031876C2 (en) * 2005-05-25 2007-01-04 Betonson B V Securing reinforcing band around concrete pile, comprises securing band around set pile and then tightening or pressing it into place
WO2010147306A2 (en) * 2009-06-19 2010-12-23 (주)하경엔지니어링 Synthetic phc pile, production method of synthetic phc pile and construction process of synthetic phc pile
KR101777760B1 (en) * 2016-11-03 2017-09-26 한국도로공사 PHC Pile comprising Sprial Hoop
CN211898332U (en) * 2020-02-28 2020-11-10 许顺良 Prefabricated building structure
CN111472352A (en) * 2020-05-18 2020-07-31 天津大学建筑设计研究院 Separated reinforcement pipe pile and reinforcement method and construction method thereof
CN114045822A (en) * 2021-11-19 2022-02-15 无锡市大筑岩土技术有限公司 Anti-pulling hollow pile and construction method thereof

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