EP2900876B1 - Procédé de réalisation d'une structure armée dans un sol - Google Patents
Procédé de réalisation d'une structure armée dans un sol Download PDFInfo
- Publication number
- EP2900876B1 EP2900876B1 EP13779320.4A EP13779320A EP2900876B1 EP 2900876 B1 EP2900876 B1 EP 2900876B1 EP 13779320 A EP13779320 A EP 13779320A EP 2900876 B1 EP2900876 B1 EP 2900876B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tube
- boring
- drilling
- boring tube
- fmax
- 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.)
- Active
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 239000011440 grout Substances 0.000 claims description 34
- 238000000034 method Methods 0.000 claims description 33
- 238000007789 sealing Methods 0.000 claims description 20
- 230000006835 compression Effects 0.000 claims description 11
- 238000007906 compression Methods 0.000 claims description 11
- 230000003014 reinforcing effect Effects 0.000 claims description 10
- 239000012530 fluid Substances 0.000 claims description 9
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 238000005553 drilling Methods 0.000 description 107
- 239000004459 forage Substances 0.000 description 20
- 239000002689 soil Substances 0.000 description 7
- 230000002787 reinforcement Effects 0.000 description 6
- 230000036346 tooth eruption Effects 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 210000001015 abdomen Anatomy 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
- E04B1/4157—Longitudinally-externally threaded elements extending from the concrete or masonry, e.g. anchoring bolt with embedded head
-
- 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
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
- E02D5/385—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds with removal of the outer mould-pipes
-
- 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
- E02D7/18—Placing by vibrating
Definitions
- the present invention relates to the field of soil reinforcement.
- the invention relates more precisely to a method of producing a reinforced structure in a soil, such as for example a stake, a micropile or even a reinforced structure for an umbrella vault.
- the manufacture of a pile includes a step of making a borehole, a step of introducing a reinforcing element in the borehole, a step of placing the grout, after which an armed pile-type structure is obtained.
- An object of the present invention is to provide a method of producing a reinforced structure in a soil which is faster than traditional methods.
- the drill pipe is detached and left in the borehole to constitute the reinforcing element of the reinforced structure.
- the drill pipe serves both as a drilling means, as a guide conduit for pumping the grout in the borehole, and as a reinforcing element of the reinforced structure.
- the distal end of the drilling tube has at least one perforation, and the drilling fluid is injected into the drilling tube, so that the drilling tube also serves as a guide conduit for pumping the drilling fluid in drilling.
- the steps of injecting drilling fluid, sealing grout in the drilling, and introduction of the reinforcing element are carried out much more quickly than in the traditional method.
- the drilling tube is also rotated in order to modify the position of the cutting teeth arranged at the distal end of the drilling tube.
- the vibration frequency applied to the drill pipe is between 50 Hz and 200 Hz.
- the diameter of the cutting member is greater than the diameter of the drill pipe, which makes it possible to ensure that the grout seal correctly coats the drill pipe.
- distal end is meant the end of the drill pipe which is distant from the means for rotating the drill pipe. We therefore call the proximal end, the other end which is located near the means for driving the drilling tube in rotation.
- the distal end of the drilling tube has at least one perforation.
- the drilling member comprises an annular periphery provided with cutting teeth, and preferably carries a diametral cutting element.
- cutting teeth is meant drilling tools in general, such as pins, buttons, tungsten carbide pellets, etc.
- the diametral cutting element makes it possible to increase the interaction surface between the cutting element and the ground, so that the cutting element can achieve a drilling on a surface greater than that of the cutting member. Consequently, the efficiency of the process is further improved.
- the diametrical cutting element can be extended so that the cutting tool is a "full face" tool comprising at least one perforation.
- a drilling fluid is injected into the drilling tube during the drilling.
- the grout is used as drilling fluid.
- additional reinforcement equipment is also introduced into the drilling tool, for example a metal bar.
- This additional reinforcement equipment is for example introduced after the drilling step and just before the step of injecting the grout.
- sealing grout is meant any sealing product based on cement, slag, or any other binder.
- centering means are fixed to the drill pipe in order to ensure that the reinforcement element is substantially centered in the borehole during the injection of the grout, to guarantee the proper coating of the reinforcement element by the grout.
- the direction of drilling is inclined relative to a vertical direction.
- the method notably allows horizontal drilling.
- the direction of drilling is inclined relative to the vertical direction by an angle strictly greater than 90 °.
- One advantage is to be able to build up armed structures.
- a target vibration frequency is calculated, and the drilling tube is made to vibrate at said target vibration frequency when drilling is carried out.
- This target vibration frequency which is applied to the drill pipe, is optimally chosen to facilitate the drilling operation, especially in particularly hard soils.
- the calculation is carried out starting from a modeling of the phenomena of perforation.
- the calculation uses the length of the drill pipe.
- the target vibration frequency is a function of the length of the drill pipe, while being limited by a predetermined maximum frequency value, which preferably corresponds to the maximum frequency that the means for vibrating the drill pipe can develop.
- This predetermined maximum frequency value is preferably between 100 and 160 Hz. More preferably, the calculation uses a constant value corresponding to the speed of propagation of the compression waves in the drill pipe, this speed depending on the material of the pipe drilling.
- This calculation is carried out by a computer comprising appropriate calculation means.
- tube portions are used which are fixed end to end during drilling in order to increase the length of the drilling. Therefore, in the sense of the invention is understood to mean a drill pipe as well a single drill pipe, as a plurality of tubular elements fixed end to end, for example by screwing.
- the target vibration frequency is recalculated each time the length of the drill pipe is increased.
- One advantage is to ensure drilling with optimal efficiency over the entire depth of the drilling.
- the method according to the invention is implemented to produce a micropile.
- the method according to the invention is implemented to produce an umbrella vault.
- a drilling tool 10 which comprises a drilling tube 12 made up of a plurality tubular elements 12a, 12b, 12c, .... These tubular elements are fixed to each other end to end so as to constitute the drilling tube 12.
- the length L of the drilling tube 12 varies during the drilling. More precisely, during the drilling, a new tubular element is added to those already introduced into the ground as the drilling tool penetrates the ground, in order to increase the length L of the tube. drilling 12.
- the drill pipe 12 comprises a distal end 14 In the example of the figure 1A , the direction of drilling is vertical downwards, so that the distal end here corresponds to the lower end of the drill pipe.
- the distal end carries a cutting member 16.
- the diameter D of the cutting member is preferably greater than the diameter d of the drilling tube 12.
- the cutting member 16 is an insert which is mounted at the distal end 14 of the drilling tube 12.
- the drill pipe 12 also has a proximal end 17 which is connected in this example to means 18 for rotating the drill pipe 12 and to means 20 for vibrating the drill pipe 12.
- the means 18 for rotating the drilling tube 12 comprise a hydraulic motor.
- the means 20 for vibrating the drilling tube in this case a vibration generator 20, make it possible to generate compression waves which are transmitted along the drilling tube 12 from the proximal end 17 towards the distal end 14 .
- L the length of the drilling tube 12. This length in fact corresponds to the distance between the means 20 for vibrating the drilling tube 12 and the distal end 14 of the drilling tube 12, which essentially corresponds to the distance between the distal and proximal ends of the drill pipe.
- drilling F is carried out in the soil S using the drilling tool 10 by rotating the drilling tube around the vertical axis A by means of the rotational drive 18, and by making it vibrate by means 20 for vibrating the drill pipe 12.
- the cutting member 16 comprises perforations 26 through which the drilling fluid flows out of the drilling tube before rising to the surface while flowing between the drilling tube and the wall of the drilling F.
- a grout C is injected into the drill pipe.
- This is a cement grout.
- the fact that the diameter D of the cutting member 16 is greater than the diameter d of the drill pipe makes it possible to substantially center the drill pipe at its distal end 16.
- the drilling tube 12 is provided with centering means 30 which are fixed along the drilling tube 12.
- centering means 30 are in particular to ensure the centering of the drilling tube 12 at the foot of the drilling F during the injection of the sealing grout, in order to ensure the coating of the drilling tube with the sealing grout.
- the centering means 30 are therefore arranged to prevent the wall of the drilling tube from coming into contact with the ground.
- the centering means 30 take the form of fins which are fixed to the outer wall of the drilling tube 12. The sealing grout C flows through the perforations 26 so that the drilling tube 12 is found embedded in the grout C.
- the drilling tube 12 is vibrated without driving it in rotation, which makes it possible to promote the flow of the sealing grout in the drilling F.
- the drill pipe After the injection of sealing grout, the drill pipe is adjusted to its final position, generally slightly higher than the depth drilled, it is maintained in this position, and the drill pipe 12 is detached from the tool. drilling 10. In other words, the drilling tube 12 is left in the drilling filled with grout.
- fixing equipment 40 for example a short metal bar, to the upper end of borehole F, at the end of which we obtain the reinforced structure in the form of a micropile M, comprising a reinforcing element which is constituted by the drilling tool 12.
- an armed structure 100 which is obtained by the implementation of the method according to the invention, in which the direction of drilling F ' is inclined relative to the vertical direction by an angle strictly greater than 90 °.
- an umbrella vault V is made up of a plurality of rising armed structures 100.
- a target vibration frequency is calculated which is applied by the vibration generator to the drill pipe 12.
- the drilling tube 12 is therefore made to vibrate at the target vibration frequency during the production of the various boreholes F, F ′. It is therefore understood that this target vibration frequency is a vibration frequency which is applied to the drill pipe.
- these vibrations are compression waves which are transmitted along the drilling tube defining bellies and nodes. These vibration waves bring the drilling tube 12 into resonance, or at least at a frequency close to its resonant frequency, which produces maximum energy on the cutting member 16, with the effect of significantly increasing the efficiency of drilling, and therefore the overall efficiency of the method according to the invention.
- the calculation of the target vibration frequency firstly comprises a step S100 during which the length L of the drill pipe 12 is entered manually or automatically determined. It is therefore assumed here that the drill pipe is put in vibration over its entire length.
- the target vibration frequency is calculated during a step S102 from the length L of the drill pipe, from the speed of propagation of the compression wave in the drill pipe 12, in this example is made of steel.
- the calculation uses a constant value corresponding to the speed of propagation of the compression waves in the drill pipe, this speed depending on the material of the drill pipe.
- the target frequency of vibrations is recalculated at each increasing the length of the drill pipe. This keeps an optimal vibration frequency for the duration of the drilling.
- the target vibration frequency thus calculated is then displayed as a suggestion to the operator. In another embodiment, it can also be sent as a setpoint to the vibration generator 20 during a step S104.
- V is equal to 5000 m / s
- Fmax is equal to 130 Hz.
- L the length of the borehole
- the tubular elements have the same unit length, namely a length of 3 meters.
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Paleontology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- General Engineering & Computer Science (AREA)
- Architecture (AREA)
- Electromagnetism (AREA)
- Physics & Mathematics (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Earth Drilling (AREA)
- Geophysics And Detection Of Objects (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1259136A FR2995918B1 (fr) | 2012-09-27 | 2012-09-27 | Procede de realisation d'une structure armee dans un sol |
PCT/FR2013/052276 WO2014049278A1 (fr) | 2012-09-27 | 2013-09-26 | Procede de realisation d'une structure armee dans un sol |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2900876A1 EP2900876A1 (fr) | 2015-08-05 |
EP2900876B1 true EP2900876B1 (fr) | 2020-04-22 |
Family
ID=47594913
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13779320.4A Active EP2900876B1 (fr) | 2012-09-27 | 2013-09-26 | Procédé de réalisation d'une structure armée dans un sol |
Country Status (11)
Country | Link |
---|---|
US (1) | US10106976B2 (es) |
EP (1) | EP2900876B1 (es) |
CA (1) | CA2885700C (es) |
CL (1) | CL2015000769A1 (es) |
CO (1) | CO7400889A2 (es) |
ES (1) | ES2806086T3 (es) |
FR (1) | FR2995918B1 (es) |
HK (1) | HK1212403A1 (es) |
MX (1) | MX2015003796A (es) |
PE (1) | PE20150871A1 (es) |
WO (1) | WO2014049278A1 (es) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2995918B1 (fr) * | 2012-09-27 | 2014-10-17 | Soletanche Freyssinet | Procede de realisation d'une structure armee dans un sol |
NL2014075B1 (en) | 2014-12-30 | 2016-10-12 | High Five Solutions B V | Method for anchoring and/or founding an object to the ground. |
DE102017103758A1 (de) | 2017-02-23 | 2018-08-23 | Bilfinger Marine & Offshore Systems Gmbh | Verfahren zum Einbringen eines Rohrs in einen Untergrund und Anordnung eines Rohrs im Untergrund |
CN107130980A (zh) * | 2017-06-28 | 2017-09-05 | 中国水利水电第十四工程局有限公司 | 一种隧洞不良地质段灌浆加固的施工方法 |
NL2020551B1 (en) * | 2018-03-08 | 2019-09-13 | Van Der Straaten Aannemingsmaatschappij B V | Method of forming a column in a ground |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2403643A (en) * | 1944-02-25 | 1946-07-09 | George L Dresser | Method of and apparatus for introducing grout into subsoil |
DE3612437A1 (de) * | 1986-04-12 | 1987-10-15 | Preussag Ag Bauwesen | Verfahren zur herstellung von betonsaeulen im boden und vorrichtung zur durchfuehrung des verfahrens |
DE102007000328A1 (de) * | 2007-06-14 | 2008-12-18 | Ed. Züblin Ag | Korrosionsgeschützte Ortbetongründungspfahlkonstruktion zum Tragen eines auf Pfählen in Gewässern errichteten Bauwerkes, sowie Verfahren und Vorrichtung zur Erstellung |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3557875A (en) * | 1969-04-10 | 1971-01-26 | B & W Inc | Method and apparatus for vibrating and cementing a well casing |
FR2502208A1 (fr) * | 1981-03-19 | 1982-09-24 | Louis Claude | Procede, dispositif et element d'ancrage ou de renforcement des sols |
FR2560285B1 (fr) * | 1984-02-23 | 1987-12-04 | Louis Claude | Procede pour enfoncer et sceller une armature dans le sol, dispositif et armature pour la mise en oeuvre de ce procede |
KR930012067B1 (ko) * | 1984-12-07 | 1993-12-23 | 미쉘 크람브 | 토질처리 및 복수장비의 연속설치방법과 그 장치 |
WO2001083933A1 (en) * | 2000-05-03 | 2001-11-08 | Cybersonics, Inc. | Smart-ultrasonic/sonic driller/corer |
US7226246B2 (en) * | 2000-06-15 | 2007-06-05 | Geotechnical Reinforcement, Inc. | Apparatus and method for building support piers from one or successive lifts formed in a soil matrix |
AU2002365145C1 (en) * | 2001-10-24 | 2008-11-13 | Shell Internationale Research Maatschappij B.V. | Remediation of mercury contaminated soil |
US20030221870A1 (en) * | 2002-06-01 | 2003-12-04 | Johnson Howard E. | Earth loop heat exchange methods and systems |
AU2003298000A1 (en) * | 2002-12-06 | 2004-06-30 | Geotechnical Reinforcement, Inc. | Method for construction of piers in soil and a pier construction |
US6955219B2 (en) * | 2003-07-03 | 2005-10-18 | Enlink Geoenergy Services, Inc. | Earth loop installation with sonic drilling |
ITMI20032154A1 (it) * | 2003-11-07 | 2005-05-08 | Uretek Srl | Procedimento per incrementare la resistenza di un volume |
US8136611B2 (en) * | 2005-02-28 | 2012-03-20 | Roussy Raymond | Method and system for installing micropiles with a sonic drill |
US20070286687A1 (en) * | 2006-06-12 | 2007-12-13 | Cesare Melegari | Method and equipment for constructing micropiles in soil |
EP2246482B1 (de) * | 2010-04-22 | 2012-06-20 | Bauer Spezialtiefbau GmbH | Verfahren und Vorrichtung zum Erstellen eines bereichsweise reibungsarmen Gründungselements |
EP2753765B1 (de) * | 2012-02-03 | 2015-11-18 | Vallourec Deutschland GmbH | Geräuscharm zu installierende gründungskonstruktion einer offshore-anlage, insbesondere einer offshore-windenergieanlage und montageverfahren hierfür |
FR2995917B1 (fr) * | 2012-09-27 | 2014-10-17 | Soletanche Freyssinet | Procede de realisation d'un ancrage dans un sol |
FR2995918B1 (fr) * | 2012-09-27 | 2014-10-17 | Soletanche Freyssinet | Procede de realisation d'une structure armee dans un sol |
US10145077B2 (en) * | 2014-07-09 | 2018-12-04 | R&B Leasing, Llc | Coupler for soil nail and method of emplacing same |
KR101489387B1 (ko) * | 2014-07-15 | 2015-02-04 | 주식회사 대성방재기술 | 지반 보강과 부력 방지용 마이크로 파일 및 이 시공 방법 |
-
2012
- 2012-09-27 FR FR1259136A patent/FR2995918B1/fr active Active
-
2013
- 2013-09-26 PE PE2015000424A patent/PE20150871A1/es active IP Right Grant
- 2013-09-26 MX MX2015003796A patent/MX2015003796A/es active IP Right Grant
- 2013-09-26 ES ES13779320T patent/ES2806086T3/es active Active
- 2013-09-26 CA CA2885700A patent/CA2885700C/en active Active
- 2013-09-26 US US14/430,611 patent/US10106976B2/en active Active
- 2013-09-26 EP EP13779320.4A patent/EP2900876B1/fr active Active
- 2013-09-26 WO PCT/FR2013/052276 patent/WO2014049278A1/fr active Application Filing
-
2015
- 2015-03-26 CL CL2015000769A patent/CL2015000769A1/es unknown
- 2015-04-20 CO CO15087248A patent/CO7400889A2/es unknown
-
2016
- 2016-01-12 HK HK16100306.1A patent/HK1212403A1/xx unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2403643A (en) * | 1944-02-25 | 1946-07-09 | George L Dresser | Method of and apparatus for introducing grout into subsoil |
DE3612437A1 (de) * | 1986-04-12 | 1987-10-15 | Preussag Ag Bauwesen | Verfahren zur herstellung von betonsaeulen im boden und vorrichtung zur durchfuehrung des verfahrens |
DE102007000328A1 (de) * | 2007-06-14 | 2008-12-18 | Ed. Züblin Ag | Korrosionsgeschützte Ortbetongründungspfahlkonstruktion zum Tragen eines auf Pfählen in Gewässern errichteten Bauwerkes, sowie Verfahren und Vorrichtung zur Erstellung |
Also Published As
Publication number | Publication date |
---|---|
ES2806086T3 (es) | 2021-02-16 |
CA2885700C (en) | 2021-02-16 |
WO2014049278A1 (fr) | 2014-04-03 |
CL2015000769A1 (es) | 2015-10-23 |
PE20150871A1 (es) | 2015-06-04 |
HK1212403A1 (en) | 2016-06-10 |
EP2900876A1 (fr) | 2015-08-05 |
FR2995918A1 (fr) | 2014-03-28 |
US20150225941A1 (en) | 2015-08-13 |
CO7400889A2 (es) | 2015-09-30 |
MX2015003796A (es) | 2015-10-05 |
US10106976B2 (en) | 2018-10-23 |
CA2885700A1 (en) | 2014-04-03 |
FR2995918B1 (fr) | 2014-10-17 |
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