WO2016128675A1 - Dispositif de pré-découpe d'une colonne pour un sol - Google Patents
Dispositif de pré-découpe d'une colonne pour un sol Download PDFInfo
- Publication number
- WO2016128675A1 WO2016128675A1 PCT/FR2016/050294 FR2016050294W WO2016128675A1 WO 2016128675 A1 WO2016128675 A1 WO 2016128675A1 FR 2016050294 W FR2016050294 W FR 2016050294W WO 2016128675 A1 WO2016128675 A1 WO 2016128675A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cutting device
- column
- cutting
- membrane
- level
- Prior art date
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D9/00—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof
- E02D9/005—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof removing the top of placed piles of sheet piles
Definitions
- the subject of the invention is a device for pre-cutting a column for a soil, an associated system for setting up the pre-cutting device and a method for removing a column for a soil.
- Such a column is made by drilling or discharging a soil that is desired to be consolidated to install a structure on paving or foundations, such as for example a building, a bridge or a wind turbine, or a highway or railway embankment (this is called rigid inclusion), or structuring to insert a direct charge transmission structure.
- the recess is filled with a material, such as concrete or mortar, possibly reinforced by a metal reinforcement immersed in the recess. vertical.
- This level is called level of arase.
- the coppicing step consists of covering the column with a portion that is flush with the ground surface, up to the level of arase.
- the coppicing step clears the column of fill material, concrete or mortar, possibly polluted during the steps of making the column, which is at a level in the upper column at the required level of aress.
- the coppicing step is generally carried out by earthwork of the column head, when the filling material, concrete or mortar, is still fresh, using a hydraulic shovel, possibly equipped with bucket or auger.
- a hydraulic shovel possibly equipped with bucket or auger.
- a first operator removes the filling material with the hydraulic excavator, while a second operator visually controls the gradual decline in the level of filling material in the column until the desired level of screed is reached.
- a first operator removes the concrete or the mortar, while a second operator controls the gradual decline in the level of the filling material in the column.
- a visual control is not sufficiently accurate and use is made of a level measurement and control device, for example of the laser type, a receiver cell is installed on a test pattern.
- the measuring apparatus is manipulated by the second operator who plunges a rod, for example, bearing the test pattern, into the column to the surface of the mortar or fresh concrete. There, the second operator measures the level of the surface of the filling material and determines whether the desired level of coverage is reached or whether to continue the coppicing.
- This embodiment provides a precision of the order of 5 to 10 centimeters. Such precision is sometimes not sufficient, and remains very dependent on the dexterity of the two operators. For a level of arase greater than one meter or even one meter and fifty centimeters, the second operator often fails to distinguish the surface of the filling material, and it is not uncommon for the second operator to plunge the bearing rod. the test pattern in the fresh filling material, which of course largely distorts the level reached by the filling material.
- the coppicing step performed when the filler material is still fresh, can not be applied in all circumstances.
- this is the case for a sandy soil or for a level of arase lower than that of a water table.
- the coppicing step may widen the recess and damage the spike column as well as the adjacent columns.
- the object of the present invention is to at least partially overcome these disadvantages.
- the subject of the invention is a device for pre-cutting a column for a floor, comprising a pre-cutting means configured to be movable between a rest position and a pre-cutting position.
- the pre-cutting device according to the present invention is moved into the rest position of the pre-cutting means, along the column, and then placed in pre-cutting position.
- the pre-cutting device left in position during the hardening of the filling material ensures pre-cutting of the column at the desired level due to the weakness that its presence induces during the hardening of the filling material in the column.
- the pre-cutting position being chosen at the desired level of arase, the level of arase is precisely realized and the method of copying facilitated by the pre-cutting of the column.
- the pre-cutting means comprises at least one membrane capable of being folded in the rest position and to be deployed in the pre-cutting position.
- the membrane has a general shape of a disk or a half-disk in the deployed position.
- the device comprises a rigid structure for deploying the membrane from the folded position to the deployed position.
- the device comprises a deployment control member of the pre-cutting means.
- the device comprises an element configured to join the pre-cutting means to a system of setting up the pre-cutting device.
- the subject of the invention is also a system for placing the pre-cutting device as described above, comprising a portion for guiding a displacement of the pre-cutting device and a holding element for the pre-cutting device. during said displacement.
- the holding element comprises a slot configured to cooperate with the securing element of the pre-cutting means to the positioning system of the pre-cutting device.
- the system comprises a drive means of the device control member.
- the system comprises a frame for supporting the guide portion (33).
- the invention also relates to a method of removing a column for a soil comprising:
- the pre-cutting device is guided in the column by a delivery system as described above.
- FIG. 1 illustrates a perspective view of a precut device in a rest position
- FIG. 2 illustrates a perspective view of the device of FIG. 1 in a pre-cutting position
- FIG. 3 illustrates a perspective view of a system for placing the device of FIG. 1;
- FIG. 4 illustrates a perspective view of the system of FIG. 3 provided with the device of FIG. 1;
- FIG. 5a to 5c illustrate a method of manufacturing a column for a floor.
- a device for pre-cutting a column for a soil comprises a pre-cutting means 2 configured to be movable between a rest position and a pre-cut position.
- the membrane 3 has a general shape of a disc.
- the membrane 3 is made from a flexible material, such as a plastic or textile, synthetic or natural, possibly recycled.
- the membrane 3 has a diameter slightly smaller than the diameter of the column.
- the pre-cutting means 2 also comprises a rigid structure 4 for deploying the membrane 3 from the folded position to the deployed position.
- the rigid structure 4 is a rigid frame comprising a set of bars 5, for example made of metal.
- Each bar 5 forms a diameter on which the membrane 3 solidly rests.
- the pre-cutting means comprises three metal bars delimiting six sectors 6 of the membrane 3, two other sectors 6 being delimited by an angle of the device 1, as will be explained later.
- Each bar 5 is configured to pivot through its center 7 around a center 8 of the rigid structure 4 corresponding to the center of the deployed membrane 3. Because the membrane 3 is secured to the bars 5, the pivoting of the bars 5 causes the deployment or otherwise the folding of the sectors 6, in the manner of a double fan.
- the rest position of the pre-cutting device 1 coincides with the folding position of the membrane 3, in which the metal bars 5 extend rectilinearly over each other.
- the pre-cutting device 1 comprises a control member 9 for deploying the pre-cutting means 3.
- control member 9 is a rod secured at one of its ends 10 to the center 8 of the membrane 3 and to the middle 7 of the metal bars 5.
- the rod 9 advantageously has a square section.
- the rod 9 extends along an axis X substantially orthogonal to a plane P delimited by the metal bars 5.
- the rod 9 is free to rotate about this axis X relative to the bracket 12, and is rotated about the X axis by a gripping device manipulated by an operator, as will be detailed below.
- the metal bars 5 being secured by their means 7 of the rod 9, the rotation of the rod 9 around the axis X controls the rotation of the metal bars 5 around the center 8.
- the pre-cut device 1 also comprises an element 12 configured to secure the pre-cutter means 2 to a system 30 for placing the pre-cutter device 1.
- the element 12 is an angle iron.
- the angle 12 is a metal section comprising two flanges 13 and 14 orthogonally disposed opposite each other, so that the section has an L-shaped section.
- the flange 13 of the bracket 12 is disposed in the plane P in the deployed position.
- the wing 13 is pierced by a recess 15 traversed by the control rod 9, which allows the control rod 9 to reach the media 7 of the metal bars 5.
- the membrane 3 rests integrally on the flange 13 of the bracket 12.
- the wing 14 is intended to cooperate with a slot of the system 30 for placing the pre-cut device 1, as will be detailed below.
- the device 1 comprises two membranes whose form, in the deployed position, is a half-disk, the two membranes then being juxtaposed so as to form a complete disk in the pre-cutting position.
- each half-disc is wound in the rest position on two ends of a pivoting axis around the control rod 9.
- This variant not illustrated has a manufacturing cost and a lower carbon footprint.
- the rigid structure 4 and / or the angle 12 may be metal, but also made of a rigid non-metallic material, such as a plastic for example. Note that the invention is not limited to a deployment of the membrane 3 by the rod 9 but other modes of training are of course applicable.
- the system 30 for setting up the pre-cutting device 1 comprises a guiding portion 31 for a displacement of the pre-cutting device 1 and a holding element 32 for the pre-cutting device. -cutting 1 during his move.
- the guiding portion 31 comprises a hollow outer tube 33 which allows the guiding of the system 30 in the filling material of the column, as will be explained later.
- the hollow outer tube 33 comprises an outer wall 34 provided with three centralizers 35 disposed substantially at 120 ° two to dex.
- the centralizers 35 allow guidance of the system 30 in the column, as will be explained below.
- the hollow outer tube 33 is secured by one of its ends 36, 37 to the holding element 32.
- the outer tube 33 comprises on the wall 34 a receiving cell of a distance measuring device, preferably laser type, not shown, and whose position can be adjusted along the outer tube.
- a distance measuring device preferably laser type, not shown
- the holding element 32 is a parallelepiped 40 provided with a slot 39, and secured by one of its sides to the end 36 of the outer tube 33.
- the slot 39 is configured to cooperate with the angle 12 of the pre-cutting device 1.
- the slot 39 has a depth greater than a width of the flange 14 of the bracket 12 and a spacing greater than a thickness of the flange 14 of the angle 12.
- the pre-cutting device 1 is held in the rest position by the system 30, the wing 14 being inserted into the slot 39, the wing 13, the rigid structure 4 and the membrane 3, in the folded position, overlooking the slot 39.
- the holding element 32 holds the pre-cutting device 1 in all directions except for a direction making it possible to release the pre-cutting device 1.
- bracket 12 is held simply by friction, as will be explained further later.
- the delivery system 30 also includes a concentric inner tube 41 of the outer tube 33.
- the inner tube 41 forms a drive means of the device control member.
- the inner tube 41 extends in the outer tube 33 being held by an unillustrated stop which limits any rotation of the inner tube 41 relative to the outer tube 33 to 180 °.
- the inner tube 41 comprises two ends 42, 43 respectively arranged facing the end 37, 36 of the outer tube 33.
- the end 42 intended to remain above the surface of the ground, is equipped with a gripping device 44, such as a crank.
- the crank makes it possible to print a rotational movement of the inner tube 41 and thus a rotational movement of the control rod 9 with respect to the outer tube 33 and consequently to the holding member 32 and to the bracket 12.
- the end 43 is a housing whose section is of the same shape as the section of the rod 9, advantageously of square shape, so that the end 43 receives the control rod 9 of the pre-cutting device.
- the weight of the system 30 can advantageously be adapted to the desired level of arase, and in particular increased for a descent of the pre-cutting device 1 at high depths.
- the outer tube prefferably be grooved to form a rack, thereby controlling the descent of the system 30 including at high depths.
- the rack is activated manually or using an electric or hydraulic motor, preferably mounted on a ball joint to adjust the verticality.
- the entire system of implementation of the device 1 and the rack is mounted on a frame, and installed for example on a mobile equipment type mini excavator or forklift.
- the holding element with a locking mechanism, provided for example with a trigger, and configured to hold the bracket 12 in the slot 39 in the rest position and to release the membrane once the device 1 set up at the desired depth.
- a locking mechanism provided for example with a trigger
- the invention also relates to a method of removing a column for a floor.
- the column 50 comprises a recess 51 made for example by drilling or discharge in a soil S and filled with a filling material, such as concrete or mortar, possibly reinforced by a metal reinforcement immersed in the recess 51.
- a filling material such as concrete or mortar
- the invention may in particular be applied to a rigid inclusion type column which allows the reinforcement of the soil S, or to a column of load transmission, possibly armed.
- the process of copying comprises a step of moving the pre-cutter device 1 in the column 50 in which the filler material is at least partly in pasty form, the pre-cutting device being kept in the rest position.
- pasty form it is meant that the filling material, such as concrete or mortar, has not yet acquired its final hardness, so that the device 1 and the system 3 can be moved in the filling material.
- the pre-cutting device 1 is moved by insertion of the delivery system 30 in the column 50, the pre-cutout device 1 being held by the bracket 12 in the slot 39.
- the delivery system 30 is dipped, preferably vertically, in the column 50.
- the centerers 35 ensure that the delivery system 30 goes vertically into the column 50.
- the friction exerted on the pre-cutting device 1 is sufficient to maintain the flange 34 of the angle 12 in the slot 39.
- the method comprises, illustrated in FIG. 5b, a step of placing the pre-cutting device 1 in the pre-cutting position at a given depth of the column 50.
- the depth reached is indicated by the distance measuring apparatus, in a manner known to those skilled in the art.
- the position of the pre-cutting device 1 at the desired depth in the column is verified by the laser level and the pattern disposed on the outer tube. This depth corresponds to a desired level of arase, as will be explained.
- the method comprises a subsequent step of raising the delivery system 30, while the pre-cutting device 1 remains stationary due to the pressure exerted by the filling material on the deployed membrane 3.
- the filler material is allowed to solidify.
- the method also comprises, once the filling material has solidified, a step of copying a portion of the column 50 extending to the pre-cutting device 1 .
- an operator manipulates a shovel, for example, to cover the portion 52 of the column 50 which is flush with the surface of the ground, to the pre-cutting device 1, otherwise called a column head.
- the membrane 3 in the deployed position ensures the pre-cutting of the column during the hardening of the filling material in the column 50.
- the shovel applies a shock at the head of the column, which has the effect of breaking the head 52 of column clearly at the level of the pre-cutting device 1.
- the present invention has many advantages.
- the level of arase marked by the device 1 and obtained by the coppicing method according to the present invention is precise and is in particular in adequacy with the execution tolerances imposed by the ASIRI recommendations.
- the precision obtained is of the order of one centimeter.
- the overall cost of the work is reduced because of the precision of the indication of the level of arase, which avoids any resumption of the arases after the construction.
- the material means simply require a device 1, disposable, simple to manufacture and put in position in the column, and a system 30, mobile, reusable immediately for each column of the site, possibly removable to allow easy rinsing.
- one of the major advantages of the pre-cutting device 1 is to allow the realization of precise arases at depths greater than 1 meter, or even 1.5 meters, impossible to achieve for rigid inclusion type columns with known state of the art, as already explained.
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- Engineering & Computer Science (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)
- Structural Engineering (AREA)
- Treatment Of Fiber Materials (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2975344A CA2975344C (fr) | 2015-02-13 | 2016-02-09 | Dispositif de pre-decoupe d'une colonne pour un sol |
AU2016217693A AU2016217693B2 (en) | 2015-02-13 | 2016-02-09 | Device for precutting a column for a floor |
EP16707187.7A EP3256647A1 (fr) | 2015-02-13 | 2016-02-09 | Dispositif de pré-découpe d'une colonne pour un sol |
US15/545,926 US20180010315A1 (en) | 2015-02-13 | 2016-02-09 | Device for precutting a column for a floor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1551194A FR3032730B1 (fr) | 2015-02-13 | 2015-02-13 | Dispositif de pre-decoupe d'une colonne pour un sol |
FR1551194 | 2015-02-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016128675A1 true WO2016128675A1 (fr) | 2016-08-18 |
Family
ID=53200111
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2016/050294 WO2016128675A1 (fr) | 2015-02-13 | 2016-02-09 | Dispositif de pré-découpe d'une colonne pour un sol |
Country Status (6)
Country | Link |
---|---|
US (1) | US20180010315A1 (fr) |
EP (1) | EP3256647A1 (fr) |
AU (1) | AU2016217693B2 (fr) |
CA (1) | CA2975344C (fr) |
FR (1) | FR3032730B1 (fr) |
WO (1) | WO2016128675A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3086956B1 (fr) | 2018-10-09 | 2022-06-10 | Soletanche Freyssinet | Dispositif d'arasement d'une colonne |
US11865738B2 (en) | 2019-10-04 | 2024-01-09 | Keller North America, Inc. | Method and apparatus for creating a preferential breakage plane within cured columns |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61169522A (ja) * | 1985-01-21 | 1986-07-31 | Toshihiko Fujii | 地盤改良ソイルセメント杭の杭頭金具 |
CN104234038A (zh) * | 2014-03-03 | 2014-12-24 | 王磊 | 一种灌注桩免破碎桩头施工工艺 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3343961A1 (de) * | 1983-12-06 | 1985-06-20 | Gkn Keller Gmbh, 6050 Offenbach | Verfahren zum herstellen von pfaehlen oder pfahlartigen koerpern |
-
2015
- 2015-02-13 FR FR1551194A patent/FR3032730B1/fr active Active
-
2016
- 2016-02-09 WO PCT/FR2016/050294 patent/WO2016128675A1/fr active Application Filing
- 2016-02-09 CA CA2975344A patent/CA2975344C/fr active Active
- 2016-02-09 EP EP16707187.7A patent/EP3256647A1/fr active Pending
- 2016-02-09 AU AU2016217693A patent/AU2016217693B2/en active Active
- 2016-02-09 US US15/545,926 patent/US20180010315A1/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61169522A (ja) * | 1985-01-21 | 1986-07-31 | Toshihiko Fujii | 地盤改良ソイルセメント杭の杭頭金具 |
CN104234038A (zh) * | 2014-03-03 | 2014-12-24 | 王磊 | 一种灌注桩免破碎桩头施工工艺 |
Also Published As
Publication number | Publication date |
---|---|
AU2016217693A1 (en) | 2017-08-10 |
FR3032730B1 (fr) | 2018-11-02 |
US20180010315A1 (en) | 2018-01-11 |
CA2975344A1 (fr) | 2016-08-18 |
EP3256647A1 (fr) | 2017-12-20 |
FR3032730A1 (fr) | 2016-08-19 |
AU2016217693B2 (en) | 2019-04-11 |
CA2975344C (fr) | 2023-08-15 |
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