EP0973984A1 - Procede de demolition d'un immeuble et equipement pour la mise en oeuvre de ce procede - Google Patents
Procede de demolition d'un immeuble et equipement pour la mise en oeuvre de ce procedeInfo
- Publication number
- EP0973984A1 EP0973984A1 EP98920576A EP98920576A EP0973984A1 EP 0973984 A1 EP0973984 A1 EP 0973984A1 EP 98920576 A EP98920576 A EP 98920576A EP 98920576 A EP98920576 A EP 98920576A EP 0973984 A1 EP0973984 A1 EP 0973984A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- load
- slab
- jack
- equipment according
- bearing walls
- 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
- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000008569 process Effects 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 9
- 239000000565 sealant Substances 0.000 claims description 4
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 3
- 239000011496 polyurethane foam Substances 0.000 claims description 3
- 238000007596 consolidation process Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 239000002360 explosive Substances 0.000 description 6
- 239000011324 bead Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 229910000760 Hardened steel Inorganic materials 0.000 description 1
- 206010044565 Tremor Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000003307 slaughter Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/08—Wrecking of buildings
Definitions
- the present invention relates to a method of demolishing a multi-storey building consisting of a set of load-bearing walls which are substantially parallel to one another, commonly called sails, and a set of slabs forming the floors, the slabs being substantially parallel to one another and substantially perpendicular to said load-bearing walls, this process consisting in demolishing the building from top to bottom in sections of at least two floors.
- the invention also relates to equipment for implementing this method.
- the explosive caving solution which consists of placing the explosive charges at predetermined locations to cause the overall building to collapse.
- This last quick and effective solution is also very expensive since it is necessary to add to the own cost of the explosives and their installation, an external cost for the location and clearing of a security perimeter around the building. , for example within a radius of 300 meters.
- This external cost includes all the administrative procedures and the deployment of security forces to evacuate homes, interrupt land and air traffic, etc.
- This explosive caving solution only becomes profitable from a 16-storey building about.
- the purpose of the present invention is to remedy this lack by proposing a demolition process and equipment adapted to this height of buildings, without resorting to explosives, which allow the demolition of the building by slice of upper floors downward, not exceeding the footprint of the building on the ground, the cost of implementation of which is lower than that of the caving since it is not necessary to provide for the evacuation of a perimeter of security, or interruption of traffic, and whose completion time is less than that represented by a conventional or ball solution, or even by the manual dismantling of the building.
- this process is safe for operators since it is not necessary to weaken the entire structure of the building, by removing the bracing.
- the present invention relates to a demolition process characterized in that it comprises the following stages:
- the cylinder is pressurized to push the load-bearing walls forward and at least trigger the collapse of the slabs and load-bearing walls of the upper floors. So that the jack can rest on a uniformly flat area, a sealant is injected into the rear support area of the jack to fill the existing cavities.
- An additional step can be provided which consists in creating rupture zones in the load-bearing walls by notching them parallel to the slab, in particular in the case of walls reinforced with metal reinforcements.
- the pushing and consolidation equipment is preferably recovered and the said steps are repeated.
- the present invention also relates to equipment arranged for the implementation of this method characterized in that it comprises at least one thrust cylinder mounted in an opening formed in a slab by means of a chassis.
- the chassis comprises at least one retaining plate positioned in front of the edge of the sectioned slab and fixed on two transverse profiles provided on either side of this slab.
- the chassis may include longitudinal members arranged substantially perpendicular to the transverse profiles and fixed to the slab to rigify it.
- a sealant is injected between the retaining plate and the edge of the slab to fill all the cavities and form a uniform support plane for the jack.
- the chassis comprises a support plate mounted parallel to the retaining plate by means of a hinge provided at the base of these plates, this support plate comprising a barrel intended to receive the body of the actuator. push, which can be sealed in the barrel by means of at least one injected polyurethane foam.
- the free end of the rod of the thrust cylinder advantageously comprises a partially spherical support head provided for pressing on the opposite edge of the cut slab and reinforced by at least one support profile fixed integrally.
- the equipment comprises at least one forestay positioned in the diagonal of at least one part of the building disposed at the rear of the thrust cylinder to form a bracing.
- This forestay may comprise at least two tubes sliding one inside the other, their free end being housed in an angle of said piece reinforced by a metal angle.
- ⁇ is advantageously energized by at least one jack arranged between at least two brackets provided on said tubes and then fixed in position by a weld bead at the junction of the two tubes.
- FIG. 1 schematically represents a building to be demolished with the positioning of the demolition equipment according to the invention
- FIG. 2 is a view of the mounting of the jack in a slab in the thrust position
- FIG. 3 is a perspective view of the mounting of the jack of FIG. 2 after the thrust
- Figure 4 is a view of the mounting of a stall
- the building 1 to be demolished consists of a set of load-bearing walls 2 commonly called sails and a set of slabs 3 defining the floors numbered in Figure 1 from the ground floor to 8th.
- the load-bearing walls 2 and the slabs 3 schematically form a grid of rooms 4.
- the demolition process according to the invention consists in demolishing this building from top to bottom in sections of at least two floors, and in the example three floors , by exerting on a selected floor and on one side of the building a horizontal thrust in a slab in a direction substantially perpendicular to the load-bearing walls, having the effect of moving and laying these load-bearing walls forward in the direction of thrust xepxentered pax the arrow P, causing the flow of the other load-bearing walls and the slabs of the upper floors which collapse on each other.
- This slaughter operation is started three or four floors down, and so on. For an eight-story building, only two operations are necessary, the remaining parts being demolished with a hydraulic shovel.
- This demolition process involves the following stages: 1. the slab 3 of the determined floor is cut, for example the slab of the 7th, at the same time as the load-bearing mu 2 and in an area located beyond the second load-bearing mux from the exterior mux,
- a hydraulic thrust cylinder 10 is installed in the opening thus created, parallel to the slab 3 and perpendicular to the load-bearing walls 2, by a frame 20 which makes it possible to stiffen the rear support zone of the cylinder,
- props 30 are put in place in the parts located at the rear of the jack and on the lower floors to make braces,
- the hydraulic pressurization of the jack 10 is controlled to push the load-bearing walls forward and trigger the collapse of the slabs and load-bearing walls of the upper floors and the load-bearing walls of the lower floor as explained above.
- a step can be added to the above process in which rupture zones are created by forming notches 5 in the load-bearing walls 2 parallel to the slabs 3 and at determined locations for shearing by example, the metal reinforcements which are in the form of lattices incorporated into the walls or tie rods provided at the ends of these walls.
- the material used for the first section is recovered beforehand, namely the jacks 10, the frames 20 and the stays 30 to replace them, for example, three floors below.
- the demohtion equipment allowing the implementation of the method described above comprises at least one thrust cylinder 10 of several tonnes (max. 100 tonnes), preferably hydraulic, a chassis of mounting 20 of the jack and braces 30 of bracing.
- the chassis 20 for mounting the jack comprises a metalhque retaining plate 21, positioned in front of the edge 3a of the slab 3 which is cut off and fixed on two U-shaped metal profiles 22, transverse and provided on either side of this slab .
- U-shaped metal beams 23 are provided perpendicular to the transverse profiles 22, fixed on the slab 3 to stiffen it so that it resists the thrust of the jack 10.
- a sealing product such as rapid cement grout, is injected between the retaining plate 21 and the edge 3a of the slab to fill any cavities that may exist and form a uniform support plane for the jack 10.
- This chassis 20 also includes a metalhque support plate 24, mounted parallel to the holding plate 21 by means of a hinge 25 provided at the base of these plates.
- This support plate 24 comprises a metal 26 barrel intended to receive the body 11 of the thrust cylinder 10. The latter is positioned in the barrel 26 by needle screws 27 and then sealed by means of an injected polyurethane foam or any other appropriate system. An orifice 28 is arranged in the barrel 26 to receive the fittings 12 of the supply pipes of the jack 10, these fittings also intervening in the mechanical holding of the jack.
- the free end of the rod 13 of the thrust cylinder 10 comprises a partially spherical support head 14 made for example of hardened steel and intended to press on the opposite edge 3b of the sectioned slab. This section 3b is also reinforced by a support profile 29 fixedly attached to it by means of two transverse U-shaped profiles 22.
- the presence of the support head 14 at the end of the rod of the jack 10 enables it to provide support whatever the thrust angle which is not always precisely at 90 °.
- the stays 30 are provided to consolidate the existing parts 4 located at the rear and on the lower floors relative to the jack 10 by forming braces.
- Each forestay comprises two metal tubes 31, 32, preferably of square section and sliding one inside the other, provided at their free end with a round drawn profile 33 intended to be housed in a corner of the part 4 reinforced by a metal angle 34.
- Each stay is placed in the diagonal of the part 4, tensioned by a jack 35 disposed between two brackets 36 provided on said tubes 31, 32 and fixed in position stretched by a weld bead at the junction 37 of the two tubes. After welding, the tensioning jack 35 is removed.
- the jack 10 is held in the opening of the dahe 3 between the two sections 3a and 3b. As soon as the load-bearing walls 2 fall, the edge 3b of the slab moves away, the jack 10 is no longer held and retracts automatically under the remaining slab, according to arrow A shown in FIGS. 1 and 3, thanks to the hinge coupling the support 21 and holding plates 24. For this purpose, the near bearing wall 2 is cut to provide an opening intended to receive the jack in the rest position. The jack 10 is thus protected from falling rubble and can be reused. Similarly, the struts 30 are also recoverable after removing the weld bead which keeps them under tension.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9704573 | 1997-04-09 | ||
FR9704573A FR2762032B1 (fr) | 1997-04-09 | 1997-04-09 | Procede de demolition d'un immeuble et equipement pour la mise en oeuvre de ce procede |
PCT/FR1998/000696 WO1998045551A1 (fr) | 1997-04-09 | 1998-04-07 | Procede de demolition d'un immeuble et equipement pour la mise en oeuvre de ce procede |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0973984A1 true EP0973984A1 (fr) | 2000-01-26 |
EP0973984B1 EP0973984B1 (fr) | 2002-01-09 |
Family
ID=9505884
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98920576A Expired - Lifetime EP0973984B1 (fr) | 1997-04-09 | 1998-04-07 | Procede de demolition d'un immeuble et equipement pour la mise en oeuvre de ce procede |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0973984B1 (fr) |
AU (1) | AU7339098A (fr) |
DE (1) | DE69803446T2 (fr) |
ES (1) | ES2171295T3 (fr) |
FR (1) | FR2762032B1 (fr) |
PT (1) | PT973984E (fr) |
WO (1) | WO1998045551A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013124545A1 (fr) | 2012-02-23 | 2013-08-29 | Colas | Procédé de démolition par vérinage, châssis de vérin(s) et appareils de poussée et de contreventement |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2813627B1 (fr) | 2000-03-31 | 2003-10-31 | Jean Claude Philip | Dispositif actionneur par detente de gaz pour demolition de batiment |
NL1020143C2 (nl) * | 2002-03-11 | 2003-09-12 | A Van Der Wal Sloopwerken B V | Systeem en werkwijze voor het slopen van gebouwen. |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR917320A (fr) * | 1945-06-21 | 1947-01-03 | Marseillaise Des Entpr S Chauf | Moyen rapide de démolition d'ouvrages importants en maçonnerie, en béton ou en autres matériaux de construction, caractérisés par des murs épais ou de grande longueur ou de grande hauteur |
JPS535463B2 (fr) * | 1972-09-08 | 1978-02-27 | ||
DE29502966U1 (de) * | 1995-02-22 | 1995-06-14 | LOG Hydraulik GmbH, 84051 Essenbach | Vorrichtung zum Durchbrechen von Wänden o.dgl. |
-
1997
- 1997-04-09 FR FR9704573A patent/FR2762032B1/fr not_active Expired - Fee Related
-
1998
- 1998-04-07 ES ES98920576T patent/ES2171295T3/es not_active Expired - Lifetime
- 1998-04-07 DE DE69803446T patent/DE69803446T2/de not_active Expired - Lifetime
- 1998-04-07 AU AU73390/98A patent/AU7339098A/en not_active Abandoned
- 1998-04-07 WO PCT/FR1998/000696 patent/WO1998045551A1/fr active IP Right Grant
- 1998-04-07 EP EP98920576A patent/EP0973984B1/fr not_active Expired - Lifetime
- 1998-04-07 PT PT98920576T patent/PT973984E/pt unknown
Non-Patent Citations (1)
Title |
---|
See references of WO9845551A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013124545A1 (fr) | 2012-02-23 | 2013-08-29 | Colas | Procédé de démolition par vérinage, châssis de vérin(s) et appareils de poussée et de contreventement |
Also Published As
Publication number | Publication date |
---|---|
DE69803446T2 (de) | 2002-09-12 |
FR2762032B1 (fr) | 1999-06-18 |
WO1998045551A1 (fr) | 1998-10-15 |
DE69803446D1 (de) | 2002-02-28 |
ES2171295T3 (es) | 2002-09-01 |
PT973984E (pt) | 2002-07-31 |
FR2762032A1 (fr) | 1998-10-16 |
EP0973984B1 (fr) | 2002-01-09 |
AU7339098A (en) | 1998-10-30 |
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