EP1147264A1 - Cut-off device for concrete structures - Google Patents
Cut-off device for concrete structuresInfo
- Publication number
- EP1147264A1 EP1147264A1 EP99959474A EP99959474A EP1147264A1 EP 1147264 A1 EP1147264 A1 EP 1147264A1 EP 99959474 A EP99959474 A EP 99959474A EP 99959474 A EP99959474 A EP 99959474A EP 1147264 A1 EP1147264 A1 EP 1147264A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- concrete
- part according
- cutting
- bottle
- concrete part
- 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
- 230000001154 acute effect Effects 0.000 claims abstract description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 15
- 230000003111 delayed effect Effects 0.000 claims description 6
- 125000006850 spacer group Chemical group 0.000 claims description 6
- 230000035515 penetration Effects 0.000 claims description 4
- 230000002787 reinforcement Effects 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- 238000005336 cracking Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims description 2
- 230000000284 resting effect Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 4
- 241001124569 Lycaenidae Species 0.000 description 3
- 235000014987 copper Nutrition 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000004604 Blowing Agent Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 235000000396 iron Nutrition 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000979 retarding effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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 invention relates to a device for coppicing or demolishing a concrete part, comprising means for placing at least one coppicing element equipped with an elementary reservoir intended to receive a reactive agent of chemical nature. or mechanical to cause cracking by the expansion effect of the concrete part.
- a copping device has already been proposed using reservation means put in place before the concrete pouring operation, to create a series of channels in the mass of hardened concrete.
- the reactive agent is then introduced into the channels communicating with the various reservoirs.
- the implementation of such a reservation method makes use of a removable cage having a plurality of vertical rigid bars.
- the reaction of the blowing agent causes the concrete mass to burst, which requires dismantling the exploded concrete blocks.
- the object of the invention consists in making a coppicing or demolition device of simple construction, and making it possible to precisely define the rupture zone of the part of a concrete structure to be demolished, without affecting the mechanical strength of the rest of the book.
- each coppicing element is formed by a bottle, made in particular of plastic material, having a flat closed bottom, and a lateral envelope making an acute angle with the bottom, said angle being between 25 ° and 60 ° to generate expansion forces intended to cause a fracture of the piece of concrete along the rupture zone defined by the bottom, and a lifting movement of small amplitude of the concrete block after coppicing.
- the top of the envelope is attached to a support member for the establishment of the bottom at the desired demolition.
- the support member comprises a rigid tube connected to a tubular connection end formed at the top of the envelope, said tube serving as a supply channel for the demolition agent inside the bottle.
- each cutting element can be operated individually, or grouped by means of a positioning frame, before or after the concrete pouring operation.
- the positioning frame is fixed before the concrete pouring operation, to waiting reinforcements by means of spacers angularly spaced between the different tubes of the coppicing elements.
- the spacers advantageously extend in the radial direction towards the inside of the positioning frame to delimit an orifice for the axial passage of the concrete pouring pipe.
- the flat bottom of the bottle of each cutting element is generally arranged horizontally, extending perpendicular to the direction of insertion. This results in a horizontal fracture of the concrete along a plane passing through all the coplanar bottoms of the bottles. Then just lift the sectioned block at the base, and the operation is complete.
- each bottle can be filled with a delayed reactive agent, and is then put in place before or after pouring the concrete, without using filling tubes.
- FIG. 1 is a schematic sectional view of a copping element according to the invention.
- FIG. 2 shows the bottle of the copping element of Figure 1, associated with a guide member facilitating penetration into the concrete;
- FIG. 3 shows an elevational view of the positioning frame equipped with several coppers for placement before pouring concrete
- Figure 4 is a plan view of Figure 3;
- - Figure 5 is a view of a bottle suitable for filling a delayed reactive agent
- - Figure 6 shows a device for fixing a tube on a fitting template
- FIG. 7 represents a variant of FIG. 6.
- a cutting element 10 for a device for demolishing concrete structures comprises a bottle 12, preferably made of plastic, intended to be connected to a support member 14 constituted by a vertical tube 16.
- the bottle 12 is shaped according to a hollow pocket with closed bottom 18 that is substantially flat, connected to a frustoconical lateral envelope 20. It is clear that any other form of revolution can be used to produce the envelope 20.
- the bottom 18 can also be curved to compensate for the pressure generated by the concrete during casting.
- the envelope 20 forms an acute angle with the bottom 18, said angle at the base preferably being between 25 ° and 60 °.
- a tubular end piece 22 is arranged at the top of the envelope 20 to receive the lower end of the tube 16.
- the tube 16 is fixed to the envelope 20 by screwing or by any assembly means.
- the cutting element 10 is introduced vertically into the fresh concrete 24 after the concrete pouring operation.
- the length of the tube 16 is chosen to allow the upper end to protrude, which serves as an access orifice 26 for the installation of a destruction agent, for example of the chemical or mechanical expansive type.
- the depth of penetration of the cutting element 10 into the concrete 24 precisely determines the rupture zone 28.
- an expansion effect occurs inside the plastic bottle 12.
- the resulting reaction forces F are distributed perpendicularly along the wall of the frustoconical envelope 20, and generate radial components F1 extending parallel to the bottom 18, and vertical components F2 perpendicular to the bottom 18. This results in a fracture horizontal concrete in the plane passing through the flat bottom 18 of the bottle 12 which determines the cutting area 28.
- the action of the vertical components F2 causes a slight lifting movement of the concrete block during cutting.
- the introduction of the cutting element 10 in the fresh concrete is facilitated by a guide element 30 fixed to the external face of the flat bottom 18.
- the guide element 30 is formed by a cone, made for example of concrete, the point of which is directed downwards, and the base is in contact with the bottom 18.
- a plurality of coppers 10 are placed in the fresh concrete.
- the introduction of these elements can be carried out individually or grouped on a common positioning frame 32.
- the insertion by means of a positioning frame allows simultaneous and rapid penetration of all the bottles 12 into the fresh concrete.
- the demolition agent is then introduced into the vials 12 through the orifices 26 of the various tubes 16. After the expansion reaction of the demolition agent, the horizontal fracture of the concrete allows coppicing by a simple vertical lifting of the block of fractured concrete.
- the positioning frame 32 equipped with the different cutting elements 10 is put in place before pouring the concrete 24.
- the positioning frame 32 is fixed beforehand to the reinforcements 34 awaiting the pile by spacers 36 angularly spaced between the tubes 16, and resting on a hoop 39 secured to the frames.
- the reinforcements 34 are formed by steel concrete irons coaxially surrounding the tubes 16, and the spacers 36 extend radially inwards from the positioning frame 32 to define the internal orifice 38 for passage of the pouring pipe (not shown) concrete. All the bottoms 18 of the vials 12 are arranged substantially in the same horizontal plane.
- the tubes 16 for supplying the expansive agent remain integrated in the block of concrete recovered after coppicing.
- the flat bottom 18 of the vials 12 makes it possible to obtain a horizontal fracture of the concrete block along the cutting area 28. It is clear that a diagonal fracture can be obtained by means of vials having bottoms inclined at a corresponding predetermined angle at the fracture plane.
- the bottles 12 are not extended by tubes 16, but are filled directly with a delayed expanding agent of chemical or mechanical nature.
- each bottle 112 has for this purpose a bottom 118 constituted by a removable cover, which is closed after filling with the delayed expansive agent.
- the endpiece 122 is closed, and the conical or frustoconical shape of the envelope 120 is similar to that of FIG. 1.
- the bottles 112 filled with the delayed expanding agent are either placed before the concrete is poured by means of a support frame, or introduced into the fresh concrete after the casting by means of a recoverable rod.
- the expansion retarding effect can have a specific duration, preferably greater than 2 days, depending on the size of the structure, the nature of the concrete and the ambient temperature.
- the plastic material of the vials 12, 112 can be replaced by any other equivalent breakable or deformable material, for example glass.
- a device 200 for fixing a tube 16 to a fitting template 202 includes a clamp 203 associated with a support profile 204 in which a tube 16 is threaded.
- the profile 204 has two elastic branches intended at approach or move away depending on the closed or open position of the clamp 203.
- the laying template 202 fitted with a plurality of tubes 16 and bottles 12, is placed on the hoop 39.
- the clamp 203 is actuated towards the loosened position, and each tube 16 is lowered individually towards the bottom. At the end of the stroke, the clamp 203 is closed to block the tube 36.
- the fastening device 300 of the tube 16 is formed by a clip 302 of substantially circular section, and elastically deformed.
Landscapes
- 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)
- Working Measures On Existing Buildindgs (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
- Shovels (AREA)
- Sewage (AREA)
- Disintegrating Or Milling (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Turning (AREA)
- Artificial Fish Reefs (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Revetment (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9815848 | 1998-12-11 | ||
FR9815848A FR2787131B1 (en) | 1998-12-11 | 1998-12-11 | RECEPTION DEVICE FOR CONCRETE STRUCTURES |
PCT/FR1999/003088 WO2000036228A1 (en) | 1998-12-11 | 1999-12-10 | Cut-off device for concrete structures |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1147264A1 true EP1147264A1 (en) | 2001-10-24 |
EP1147264B1 EP1147264B1 (en) | 2003-04-23 |
Family
ID=9534010
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99959474A Expired - Lifetime EP1147264B1 (en) | 1998-12-11 | 1999-12-10 | Cut-off device for concrete structures |
Country Status (21)
Country | Link |
---|---|
US (1) | US6623212B1 (en) |
EP (1) | EP1147264B1 (en) |
JP (1) | JP4118517B2 (en) |
KR (1) | KR100707109B1 (en) |
CN (1) | CN1332098C (en) |
AT (1) | ATE238458T1 (en) |
AU (1) | AU1663500A (en) |
BR (1) | BR9916100A (en) |
CA (1) | CA2353967A1 (en) |
CZ (1) | CZ299514B6 (en) |
DE (1) | DE69907273T2 (en) |
ES (1) | ES2198159T3 (en) |
FR (1) | FR2787131B1 (en) |
HK (1) | HK1039972B (en) |
HU (1) | HUP0104597A3 (en) |
IL (1) | IL143497A (en) |
MX (1) | MXPA01005715A (en) |
PL (1) | PL203381B1 (en) |
PT (1) | PT1147264E (en) |
TR (1) | TR200101694T2 (en) |
WO (1) | WO2000036228A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7621097B2 (en) * | 2006-11-07 | 2009-11-24 | Weston Wilhour | System and method for casting column bases for a post frame structure |
FR2913034B1 (en) * | 2007-02-23 | 2009-05-22 | Recepieux Soc Par Actions Simp | INSPECTION DEVICE WITH CONTROLLED TRIGGERING |
CN110130674B (en) * | 2019-06-28 | 2021-07-02 | 绍兴文理学院 | Super-large pre-buried crushing hole device for static crushing and using method thereof |
JP7165461B1 (en) * | 2022-07-05 | 2022-11-04 | 千代田ソイルテック株式会社 | Removal method of crushing device and columnar improvement pile |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3432977A (en) * | 1967-03-08 | 1969-03-18 | Us Navy | Application of shaped charge to earth anchor |
US3496729A (en) * | 1968-05-24 | 1970-02-24 | Bernd Pleuger | Protective tube for concrete pile |
US4165198A (en) * | 1976-09-07 | 1979-08-21 | Farmer Foundation Company | Method for forming pier foundation columns |
JPS5670324A (en) * | 1979-11-12 | 1981-06-12 | Shogo Matsugishi | Concrete crushing body and crushing method of concrete structure |
JPS5985023A (en) * | 1982-11-05 | 1984-05-16 | Shotaro Shimura | On-site pile driving work |
JPS5991214A (en) * | 1982-11-18 | 1984-05-25 | Sumitomo Cement Co Ltd | Head treatment work of on-site pile |
JPS6059223A (en) * | 1983-09-08 | 1985-04-05 | Hazama Gumi Ltd | Treatment of head of cast-in-place pile |
US4673157A (en) * | 1985-11-13 | 1987-06-16 | Wells Gordon T | Footing form |
US4767241A (en) * | 1985-11-13 | 1988-08-30 | Wells Gordon T | Method for simultaneous forming of concrete footings and piers |
US5622453A (en) * | 1995-04-27 | 1997-04-22 | The United States Of America As Represented By The United States Department Of Energy | Method and apparatus for in-densification of geomaterials for sealing applications |
FR2767346A1 (en) * | 1997-08-12 | 1999-02-19 | Dominique Fonfrede | RECEPTION METHOD AND DEVICE FOR CONCRETE WORKPIECES |
-
1998
- 1998-12-11 FR FR9815848A patent/FR2787131B1/en not_active Expired - Fee Related
-
1999
- 1999-12-10 WO PCT/FR1999/003088 patent/WO2000036228A1/en active IP Right Grant
- 1999-12-10 JP JP2000588462A patent/JP4118517B2/en not_active Expired - Fee Related
- 1999-12-10 KR KR1020017007240A patent/KR100707109B1/en not_active IP Right Cessation
- 1999-12-10 CZ CZ20012047A patent/CZ299514B6/en not_active IP Right Cessation
- 1999-12-10 PL PL348183A patent/PL203381B1/en not_active IP Right Cessation
- 1999-12-10 AU AU16635/00A patent/AU1663500A/en not_active Abandoned
- 1999-12-10 AT AT99959474T patent/ATE238458T1/en active
- 1999-12-10 PT PT99959474T patent/PT1147264E/en unknown
- 1999-12-10 HU HU0104597A patent/HUP0104597A3/en unknown
- 1999-12-10 TR TR2001/01694T patent/TR200101694T2/en unknown
- 1999-12-10 CN CNB998142832A patent/CN1332098C/en not_active Expired - Fee Related
- 1999-12-10 CA CA002353967A patent/CA2353967A1/en not_active Abandoned
- 1999-12-10 IL IL14349799A patent/IL143497A/en not_active IP Right Cessation
- 1999-12-10 MX MXPA01005715A patent/MXPA01005715A/en not_active IP Right Cessation
- 1999-12-10 US US09/857,019 patent/US6623212B1/en not_active Expired - Fee Related
- 1999-12-10 DE DE69907273T patent/DE69907273T2/en not_active Expired - Lifetime
- 1999-12-10 EP EP99959474A patent/EP1147264B1/en not_active Expired - Lifetime
- 1999-12-10 ES ES99959474T patent/ES2198159T3/en not_active Expired - Lifetime
- 1999-12-10 BR BR9916100-1A patent/BR9916100A/en not_active IP Right Cessation
-
2002
- 2002-02-28 HK HK02101542.9A patent/HK1039972B/en not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO0036228A1 * |
Also Published As
Publication number | Publication date |
---|---|
KR100707109B1 (en) | 2007-04-13 |
MXPA01005715A (en) | 2003-07-14 |
PL203381B1 (en) | 2009-09-30 |
CA2353967A1 (en) | 2000-06-22 |
PT1147264E (en) | 2003-11-28 |
HUP0104597A3 (en) | 2002-04-29 |
CN1329690A (en) | 2002-01-02 |
HUP0104597A2 (en) | 2002-03-28 |
AU1663500A (en) | 2000-07-03 |
PL348183A1 (en) | 2002-05-06 |
IL143497A (en) | 2005-06-19 |
BR9916100A (en) | 2001-09-04 |
WO2000036228A1 (en) | 2000-06-22 |
FR2787131B1 (en) | 2001-03-16 |
JP4118517B2 (en) | 2008-07-16 |
CZ20012047A3 (en) | 2002-06-12 |
CN1332098C (en) | 2007-08-15 |
FR2787131A1 (en) | 2000-06-16 |
IL143497A0 (en) | 2002-04-21 |
ES2198159T3 (en) | 2004-01-16 |
EP1147264B1 (en) | 2003-04-23 |
JP2002532642A (en) | 2002-10-02 |
TR200101694T2 (en) | 2002-01-21 |
HK1039972A1 (en) | 2002-05-17 |
DE69907273T2 (en) | 2004-05-06 |
DE69907273D1 (en) | 2003-05-28 |
US6623212B1 (en) | 2003-09-23 |
ATE238458T1 (en) | 2003-05-15 |
HK1039972B (en) | 2007-11-09 |
KR20010093153A (en) | 2001-10-27 |
CZ299514B6 (en) | 2008-08-20 |
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