WO2007028534A1 - Method and device for consolidating soils and stabilizing foundations - Google Patents

Method and device for consolidating soils and stabilizing foundations Download PDF

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Publication number
WO2007028534A1
WO2007028534A1 PCT/EP2006/008500 EP2006008500W WO2007028534A1 WO 2007028534 A1 WO2007028534 A1 WO 2007028534A1 EP 2006008500 W EP2006008500 W EP 2006008500W WO 2007028534 A1 WO2007028534 A1 WO 2007028534A1
Authority
WO
WIPO (PCT)
Prior art keywords
injection
foundation
characterized
soil
hollow anchor
Prior art date
Application number
PCT/EP2006/008500
Other languages
German (de)
French (fr)
Inventor
Ilario Bridi
Enrico Nardelli
Fabiola Panizza
Original Assignee
Prematek Srl
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to ITBZ20050045 priority Critical patent/ITBZ20050045A1/en
Priority to ITBZ2005A000045 priority
Priority to ITBZ20050065 priority patent/ITBZ20050065A1/en
Priority to ITBZ2005A000065 priority
Application filed by Prematek Srl filed Critical Prematek Srl
Publication of WO2007028534A1 publication Critical patent/WO2007028534A1/en

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Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00Foundations as substructures
    • E02D27/32Foundations for special purposes
    • E02D27/48Foundations inserted underneath existing buildings or constructions

Abstract

Method and device for soil consolidation and for stabilizing building foundations by consolidating and/or compacting the soil in the region essentially under the foundations by means of injecting expanding synthetic resins through pipes which are inserted into boreholes, characterized in that, after injection (C) through hollow anchor rods (5) and measuring the lifting (1 b) of the foundation (1 a) that has taken place and/or the consolidation of the soil (1) that has taken place, the foundation (1 a) and the individual hollow anchor rods (5) are fastened together.

Description

METHOD AND DEVICE FOR FURNING FLOORS AND STABILIZING FOUNDATIONS

DESCRIPTION

Methods and apparatus for solidification, densification and lifting by injection of expanding synthetic resins are known which are intended for soils which are exposed to certain mechanical stresses, e.g. of buildings, load-bearing structures in road and railway construction, civil defense structures and the like. These strengthening processes serve essentially to increase the stability and / or the load-bearing capacity of the soil, to improve its mechanical resistance and possibly to achieve a compaction which causes the lifting of the soil and the structures which are based thereon.

From US 2,627,169 and EP 0264998 methods are known by which a soil consolidation by injecting expanding and hardening agent is achieved.

From Fl 823299 a method is known which allows the lifting of the soil surface, or laid on the ground plates, by injecting two plastic components which result in a foaming polyurethane resin by chemical reaction. In particular, JP 8260500 describes an injection process for a "chemical liquid" in a soil layer under the foundations of a structure to cause the soil compaction lifting the structure, including its foundations, to bring this, for example, from an inclined position in a normal position DE 3332256 describes a process for the solidification of soils by means of two plastic components which foam strongly as a result of chemical reaction (foaming number from 2 to 5). WO 98/24882 proposes that the ground surface, or the level of the structure above the area in which injections of expanding synthetic resins take place, is constantly monitored, that the expansion of the injected mass takes place very rapidly, that the increase in the volume of the expanding mass is at least five times the volume before injection and that the injections are made in different depths.

Practice has shown that the duration of the compaction and consolidation effect achieved by the known methods is closely related to the maintenance of the physical and chemical properties of the injected resins, to the "corrosive effect" and / or to the decomposing effect of those present in the soil Active substances and / or the subsequent changes in the soil structure, which are caused, for example, by infiltrations or by vibrations, so in certain cases the equilibrium holds between the stresses caused by the rehabilitated structure and the reaction forces of, by the injection of expanding synthetic resins, compacted and consolidated soils, not in time, possibly creating conditions in which the subsequent subsidence of the soil is no longer acceptable by the structure and design of the structure.

The invention has as its object to provide a method and the corresponding device of the type mentioned which is suitable for the consolidation of soils and the stabilization of the foundations of structures or components, the floors and foundations, which the ongoing and unforeseen loads of a building such that the stabilization is also ensured due to physical, chemical and / or geological changes which may occur over time, within the injected synthetic resin composition and / or in the consolidated and / or compacted soil mass. To solve this problem, the invention proposes that the inclusion of the above-mentioned ongoing and unforeseen loads of a building, except from, by injecting expanding synthetic resins, consolidated and / or compacted soil, in addition to a metallic reinforcement, on the one hand with the said foundation or connected to the structural elements and on the other hand, in a time-efficient manner, carried by the foot ends of the reinforcing bars and by the shear connection along these reinforcing bars takes place.

According to the injection of the expanding synthetic resins is not on the usual, rather thin-walled and smooth copper or plastic tubes but by means of known hollow, preferably strong resilient, steel rods, eg of the type "DYWIDAG", but without the use of other, possibly non-metallic, The rods are introduced into boreholes which penetrate the foundation, which are preferably provided with drill bits themselves for the purposes of boring, are provided with injection bores along their longitudinal extent, via which bores are provided The length of the rods is dimensioned such that they project with their upper end at least slightly beyond the bore provided in the foundation nd at different intervals can be done via known or inventive closure devices, or via calibrated or controlled valves, which are provided on the injection holes of the hollow anchor rods. Practice has shown that in an advantageous manner, the control of the exit of the synthetic resins through the injection holes in the hollow anchor rods in different depths feasible by the injection of the resins via its own injection pipe (preferably made of copper) which is longitudinally displaceable within the said hollow anchor rod , The injection of synthetic resins is done by first these from the Injection holes at the lower end of the anchor rod exit, the following injections take place in a higher depth, on the next higher injection holes provided by the inner tube is progressively pulled each with its lower end up and a higher position to those arranged in a certain depth Injection holes on the anchor rod occupies.

According to the invention, the injection regions in the individual depth positions are limited by sealing collars which seal the annular space between the inner surface of the drill hole and the anchor rod outer surface and prevent a backflow of the injected resin upwards. These cuffs, e.g. made of foam rubber, respectively, in the longitudinal extent of the anchor rod, between the injection holes of the respective depth position, fixedly mounted on the anchor rod and lie down elastically on the inner surface of the hole. The anchor rod can further be provided with elastic spacers so that as possible a coaxial position of the anchor rod is secured within the wellbore. After the solidification and / or compaction of the soil achieved by the injection, foaming and curing of the resin, the fixing of the upper ends of all anchor rods to the foundation by "pouring" specific adhesive plastics, injection mortar or liquid mortar into the space between the upper area of the hollow

Anchor rod and the inner wall of the corresponding hole in the foundation performed. According to the invention can further at the upper end of the anchor rod, which extends through the hole in the foundation, a threaded sleeve or a nut are placed which are dimensioned such that they can take a position within the borehole in the foundation in order by the "pouring" an efficient anchoring The invention does not exclude that the connection achieved by "pouring" is additionally secured by known metallic fasteners, or that the anchoring is achieved exclusively via known fasteners, with or without the use of known adhesives. The number of hollow anchor rods which are firmly connected to the foundation of the building, are able to absorb the ongoing and random loads, at the foot of the tie rods and shear composite along the same anchor rods, the shear bond due to the solidification and / or compression of the Bodens due to the injection and the foaming of synthetic resins is particularly efficient, but above all, due to any changes that take place over time in the resin, or in the soil, is largely sufficient.

According to the invention, at least that part of the anchor rod which traverses the cross section of the foundation is provided with an external thread, with annular external grooves or with a different profiling which provides the grip for the materials poured or injected between the anchor rod and the inner wall of the bore in the foundation ( specific adhesive resins, injection mortars, liquid mortars); Alternatively, this part of the anchor rod may be provided with a cross-section or a shape which is suitable for fixing to support elements which in turn are anchored to the foundation. Advantageously, the entire anchor rod is provided with external thread or with an external profiling which is suitable to increase the contact surface with the solidified soil in order to achieve an increased shear bond along the anchor rod, which receives mainly axially acting loads.

The invention will be explained in more detail with reference to a preferred exemplary embodiment of a method according to the invention and the corresponding apparatus for solidification and / or compaction of the soil schematically illustrated in the attached drawings, for the purpose of stabilizing the floor and the foundations of a structure over a period of time.

Fig. 1 is a schematic vertical sectional view through a bore which in an inclined position the foundation of a building and the penetrates the underlying soil and this is then solidify and compact to achieve a lifting of the foundation.

Fig. 2 shows the same, shown in Fig. 1, bore into which a hollow anchor rod is inserted which in different depths with

Injection ports and gaskets are equipped against the return of the resin; the upper end of the anchor rod projects beyond the upper surface of the foundation.

2 shows the hollow hole, according to FIG. 2, inserted hollow anchor rod, in which an axially sliding injection tube is inserted to perform the injections in the different depths can be formed whereby solidification and compression body which velvet lifting the soil effect the foundation.

Fig. 4 shows the hollow anchor rod without sliding injection tube, after the injection and the compaction of the soil, after the maximum lifting of the foundation and with the successful determination between the upper end portion of the hollow anchor rod and the foundation by pouring an adhesive without attaching cuffs or nuts.

5 shows schematically, partly in section, two regions of the same hollow anchor rod according to the invention during the injection phase.

Fig. 6 shows on an enlarged scale the area between the hollow

Anchor rod and the foundation of FIG. 4 in which the determination takes place by pouring.

Fig. 7 shows the side view of a conical seal sleeve which is elastically attached to an anchor rod (without external profiling). Fig. 7a shows the side view of a seal sleeve which is attached by a clamp to an anchor rod (without external profiling).

Fig. 7b shows the side view of an elastic centering device which is attached to an anchor rod (without external profiling).

Fig. 7c shows in longitudinal section a portion of an anchor rod (without external profiling) with an injection hole which is closed from the outside by a plug.

Fig. 8 shows, partially in section, the side view of a plug with elastic suspension tongue which has a predetermined breaking point.

Fig. 9 shows, partially in section, the side view of a plug with injection bore which is provided with an ejectable or breakable closure membrane.

Fig. 10 shows the side view of a portion of an anchor rod (without external profiling) with an injection hole which is closed by a perforable self-adhesive membrane clamp.

Fig. 11 shows in longitudinal section a portion of an anchor rod (without external profiling) with injection bore which is closed by a perforable, tearable or displaceable membrane and is held by an elastic clamp.

The foundation 1a for a continuous wall of a building absorbs the permanent and random loads on the structure in order to transfer them to the ground 1. If this soil is not very compact, or if, in the case of physical and / or geological changes, the balance between the forces acting on the structure and the reaction forces of the soil 1 is not present, then the subsidence of the soil is not structural condition and the design of the structure (inclination of the entire structure, formation of cracks, etc.). In these and similar cases, the renovation of the building by solidification of the soil 1 and by any compression for the purpose of raising the structure by injection of expanding resins, preferably in different depths and in different time periods is recommended according to the invention; However, the said solidification and possible compaction of the soil are additionally secured according to the invention by an underground reinforcement and thereby guaranteed over time, this is created from the introduction of scattered anchor rods 5 to forward the forces acting on the foundation 1a forces in the soil depth. This transfer of the loads takes place in a combined manner by the shear connection between the longitudinal surface of the individual anchor rods 5 and the solidified soil and by the carrying capacity at the foot ends of the anchor rods which are cast in the solidification bodies. The

Connection between the underground structure of the anchor rods 5 which are poured into the compacted soil in the solids 5a, 5b, 5c according to the invention by "pouring" of adhesive resins or injection mortar into the well at the upper end portion 5d, by means of threaded sleeves or nuts and / or by mechanical Connection between the said upper end portions 5d of the rods 5 and support elements which are fixed to the foundation.

The method according to the invention comprises the following phases: execution of a series of bores 3 in the bottom 1 which have different inclinations 3i, 3v, penetrate the foundation 1a 3b or are made in the immediate vicinity thereof; Advantageously, these holes are made by means of hollow provided with drill bit rods 5 or by means of specific boring bars; - Inserting the corresponding hollow anchor rods 5 without drill bit which are provided between the injection holes 5e with sealing sleeves 6 and possibly with elastic centering devices 9; - Injecting C of the expanding resin in different depths via a sliding P, S injection tube 16 which has been previously introduced into the anchor rod - alternatively, the injection can be made directly through the cavity of the anchor rod if the individual injection holes 5e with known or with calibrated or controllable according to the invention Closing devices (10, 11, 13, 12, 14), or provided with known valves or closures;

Measurement of the extent and / or degree of solidification (e.g., by penetrometer) and / or measurement of lifting 1b of the foundation 1a;

- Any further injections of expanding resins until the desired increase or solidification is achieved;

- Determining the upper end portions 5d of the hollow anchor rods 5 on the foundation 1a by "pouring" of adhesive resins or injection mortar and / or by mechanical connection.

The implementation of the holes 3, of which preferably a part with inclined axis 3i and a part with vertical axis 3v or created with a different angle of inclination is advantageously carried out by means of known hollow rods 5 of the type which is provided with drill bit and with an external thread and can be connected by means of threaded sleeves. According to the invention, these rods 5 are provided along their longitudinal extension with injection bores 5e which are spaced apart from each other and which correspond to different depth positions. The bores 3 can be made exclusively with simultaneous boring 3b of the foundation, or can be created partially or all in the immediate vicinity of the foundation or on this. The hollow anchor rod 5 with drill bit is, after being removed from the bore 3, discharged from the drill bit and between the individual depth positions which are determined by the injection holes 5e with sealing cuffs 6 to prevent the backflow of the resin and possibly with centering devices 9, and then again inserted into the bore 3, ensuring that the lower end of the rod 5 at the bottom of the 3a Drill hole 3 rests while the upper end 5d of the rod 5 protrudes by a distance from the foundation which is slightly longer than the possible increase 1b of the foundation by compaction of the bottom 1 makes. In the hollow rod 5 which is inserted in the bore 3, a sliding P, R injection tube 16 is then introduced which has a corresponding length so that the deepest injection holes 5e are not closed at the end portion of the Sänge 5; With the injection pipe 16 in this position, the injection C of the expanding resin is performed, whereby the lower solidification body 5a is formed. Subsequently, the following injections, corresponding to the different depth positions, can be made by pulling out the injection tube 16 and forming the solidification bodies 5b, 5c by the expanding resin over one or more series of hollow anchor rods 5, each series of which has a different number of injection holes 5e which are arranged according to different depth positions. According to the invention, hollow anchor rods 5 of one of these series can be provided with injection bores exclusively at the lower end region, in which case, of course, injection C of the synthetic resin without injection tube 16 is performed directly over the cavity of anchor rod 5. According to the invention, the injections in the different depth positions can also be achieved by closure devices which are provided on the individual injection bores 5e of the anchor rods 5. These closure devices release the flow of the injection mass as soon as a certain pressure is reached inside the cavity of the anchor rod 5; Depending on the depth position, or depending on the desired sequence of injection in the different depth positions, the closure devices can be tared or actuated by means of "ripcords." According to the invention, these are

Plugs 10 which are inserted from the outside into the injection holes 5e, while the plug head 10d is on the outside of the rod surface while inside a resilient 10b retaining tongue 10a with predetermined breaking point 10c holds the plug 10 in the closed position until a certain pressure is reached. Another closure device according to the invention consists of a plug 13 which with the head 13b rests on the outside of the rod 5 while a protruding edge 13a holds the plug on the inside of the rod, the plug 13 has a continuous axial bore 13c within which a membrane 13d is provided which is broken upon reaching a certain pressure or from his Seat is pushed outward. According to the invention, the closure devices can also consist of a membrane clamp 11 which, for example, consists of a self-adhesive plastic band and closes the injection bore until a specific injection pressure is reached; the adaptation to different pressure values can be achieved by possible double or multiple cover of injection hole 5e. Another closure device according to the invention consists of a membrane 14 which covers the injection hole 5e and is held in place by an elastic sleeve 12 with bore 12a. According to the invention, it is possible to control the opening of all or some of the plug-shaped closure devices 10, 13 or the membrane closure devices 11, 14 via "ripcords" which are attached to the plug, or to the membranes.

The measurement of the compaction of the soil with elevation 1 b of the foundation and / or the possible measurement of the degree of solidification and / or the

Expansion of the solidification of the soil during injection and expansion of the synthetic resin and / or after completion of injections is part of the process of the invention.

After raising 1 b of the foundation 1 a to the required extent and / or after achieving the required solidification of the soil 1, according to the invention the determination 15, 15 a between the foundation 1 a and the individual anchor rods 5 by injection or "pouring" A specific adhesive Synthetic resins, injection mortar or grout, between the upper end portion 5d of the rod 5 and the corresponding inner wall of the bore 3b in FIG

Foundation 1a or by mechanical connection between the end portion 5d of the bars and the foundation 1a by means of known Befestigunselemente, without According to the invention, the definition by "pouring" can be made particularly resistant by having a nut or other at that part of the anchor rod which, within the bore 3b, penetrates the foundation 1a Element is attached which has a larger cross section than that of the rod 5 and which is "embedded" in the cast material 15.

The invention does not exclude that under certain circumstances, the compression and / or solidification method with injection at different depths and at different time intervals by known methods with injection of expanding resins is replaced, but the injections are always done via rods which anchoring in the ground allow and which are defined on the foundation 1a.

Claims

1. A method for soil stabilization and stabilization of building foundations by solidification and / or compaction of the soil in the area substantially under the foundations by injection of expanding and hardening resins via pipes which are inserted into bores, characterized in that the pipes are hollow anchor rods (5) and that, after the injection (C) via the hollow anchor rods (5) and after determining the successful lifting (1 b) of the foundation (1a) and / or the solidification of the soil (1), the
Fixing between the foundation (1a) and the individual hollow anchor rods (5) takes place.
2. The method according to claim 1, characterized in that the injection (C) of the expanding synthetic resins in different
Depths and at different intervals is performed.
3. Process according to claims 1 and 2, characterized in that a first series of injections (C) of expanding synthetic resins is carried out in a first period in a less deep position, that in a subsequent period at least one series of injections in at least one deeper Position is carried out and that, in the case of injections in lower positions, those injections which, are performed on the same hollow anchor rods (5), in the higher position, to be performed substantially in the same depth position of the first series of injections.
4. The method according to claim 1, characterized in that as a result of the finding of the required lifting required (1 b) of the foundation (1 a), or the required solidification of the soil (1), the determination between the foundation (1 a) and the individual Hollow anchor rods (5) by "pouring" (A) or injecting specific adhesive synthetic resins, injection mortars or liquid mortar between the upper regions of the tie rods (5) and the inner walls of the corresponding holes (3b) from which the upper ends of said anchor rods ( 5), takes place.
5. The method according to claim 1, characterized in that after the determination of the required lifting required (1 b) of the foundation (1 a), or the required solidification of the soil, the determination between the foundation (1 a) and the individual hollow anchor rods ( 5) by mechanical attachment directly, by means of known
Fastening elements, or indirectly, by means of metallic brackets, which are fixed by means of known fastening means.
A device for achieving stabilization according to the method set forth in claim 1, characterized in that the hollow
Anchor rods (5) of self-drilling type or of previously performed by specific drill rods holes (3), insertable type and in that these hollow anchor rods (5) have at least one injection hole (5e) for the injected directly through the cavity of the rod resin.
7. The device according to claim 6, characterized in that in the case of a hollow anchor rod (5) which has a plurality of injection holes (5e), these to each other, according to the longitudinal axis of the rod, are spaced and with valves, closures (10, 13) or seals (11, 14) are provided with controllable or predetermined opening, wherein the injection (C) of the synthetic resin takes place directly through the cavity of the anchor rod (5).
8. Device according to claims 6 and 7, characterized in that the injection of the resin indirectly via a, axially in the interior of the cavity of the rod (5) displaceable (P, R) injection tube (16), wherein by the progressive pulling out ( R) of the tube (16), the opening of the injection holes (5e) is progressively from the lowest depth to the highest depth position.
9. Device according to claims 6 and 7, characterized in that the injection of the resin directly over the cavity of the hollow anchor rod (5) and that the individual injection holes (5e) are at least partially closed with plugs (10) which, upon reaching a specific injection pressure within the anchor rod (5) or upon actuation of a rip cord attached to the stopper, by action of a predetermined breaking point (10c) on a
Retaining member (10a), pushed outwards or pulled, to release the injection hole (5e).
10. Device according to claims 6 and 7, characterized in that the injection of the synthetic resin directly over the cavity of the hollow anchor rod (5) and that the individual injection holes (5e) are at least partially closed with sealing plug (13) which a coaxial bore (13c) in which a membrane is provided which, upon reaching a certain injection pressure within the anchor rod (5) or upon actuation of a membrane
(13d) attached ripcord pressed outwards or pulled, is to release the flow for the resin.
11. The device according to claims 6 and 7, characterized in that the injection of the resin directly over the cavity of the hollow anchor rod (5) and that the individual injection holes (5e) at least partially by membrane sleeves (11) or closure membrane (14) which be broken when reaching a certain pressure or broken by pulling, attached to the membranes, ripcords or removed.
PCT/EP2006/008500 2005-09-06 2006-08-31 Method and device for consolidating soils and stabilizing foundations WO2007028534A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
ITBZ20050045 ITBZ20050045A1 (en) 2005-09-06 2005-09-06 Procedure and equipment for the consolidation and stabilization of soils with expanding resins
ITBZ2005A000045 2005-09-06
ITBZ20050065 ITBZ20050065A1 (en) 2005-12-02 2005-12-02 Procedure and equipment for the consolidation of soils and stabilization of foundations
ITBZ2005A000065 2005-12-02

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP20060777128 EP1922449B1 (en) 2005-09-06 2006-08-31 Method for consolidating soils and stabilizing foundations
AT06777128T AT552385T (en) 2005-09-06 2006-08-31 Method for the furniture of floors and the stabilization of foundations

Publications (1)

Publication Number Publication Date
WO2007028534A1 true WO2007028534A1 (en) 2007-03-15

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Application Number Title Priority Date Filing Date
PCT/EP2006/008500 WO2007028534A1 (en) 2005-09-06 2006-08-31 Method and device for consolidating soils and stabilizing foundations

Country Status (3)

Country Link
EP (1) EP1922449B1 (en)
AT (1) AT552385T (en)
WO (1) WO2007028534A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008056261A1 (en) * 2008-11-06 2010-05-20 Bauer Spezialtiefbau Gmbh Device for generation of injection bodies in floor, has centering element achieving centering of valve through its shaping and effecting separating surface in shell body during injection, where separating surface lies transverse to axis
ES2343055A1 (en) * 2009-01-20 2010-07-21 Alberto Gonzalo Carracedo Method for repairing wind-turbine foundations
CN103774674A (en) * 2014-01-15 2014-05-07 西安建筑科技大学 Support structure for steel tube underpinned pile and anchor rod deep pit and construction method thereof
ITBZ20130034A1 (en) * 2013-07-17 2015-01-18 Prematek Srl Procedure and equipment for the consolidation and stabilization of soils.
IT201800007020A1 (en) * 2018-07-09 2020-01-09 System and method for the injection of expanding resins in land to be consolidated.

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US5145291A (en) * 1990-08-13 1992-09-08 Roger Bullivant Of Texas, Inc. Method for forming a piling beneath a structure
US5653557A (en) * 1991-07-02 1997-08-05 Gd-Anker Gmbh Injection tube and method for placing a ground anchor
US6821056B1 (en) * 2003-03-21 2004-11-23 Patricia J. Mansour Grout injecting/structure anchoring system
EP1536069A1 (en) * 2003-11-25 2005-06-01 Uretek S.r.l. A method of consolidating soil for foundation
US20050135882A1 (en) * 2003-12-18 2005-06-23 Barrett Robert K. Method and apparatus for creating soil or rock subsurface support

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR986619A (en) * 1943-11-25 1951-08-02 Sondages Etanchements A casing for the equipment of the injection holes and drilling
US5145291A (en) * 1990-08-13 1992-09-08 Roger Bullivant Of Texas, Inc. Method for forming a piling beneath a structure
US5653557A (en) * 1991-07-02 1997-08-05 Gd-Anker Gmbh Injection tube and method for placing a ground anchor
US6821056B1 (en) * 2003-03-21 2004-11-23 Patricia J. Mansour Grout injecting/structure anchoring system
EP1536069A1 (en) * 2003-11-25 2005-06-01 Uretek S.r.l. A method of consolidating soil for foundation
US20050135882A1 (en) * 2003-12-18 2005-06-23 Barrett Robert K. Method and apparatus for creating soil or rock subsurface support

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008056261A1 (en) * 2008-11-06 2010-05-20 Bauer Spezialtiefbau Gmbh Device for generation of injection bodies in floor, has centering element achieving centering of valve through its shaping and effecting separating surface in shell body during injection, where separating surface lies transverse to axis
DE102008056261B4 (en) * 2008-11-06 2011-06-16 Bauer Spezialtiefbau Gmbh Ventilzentrierung
ES2343055A1 (en) * 2009-01-20 2010-07-21 Alberto Gonzalo Carracedo Method for repairing wind-turbine foundations
WO2010084210A1 (en) * 2009-01-20 2010-07-29 Alberto Gonzalo Carracedo Method for repairing wind-turbine foundations
ITBZ20130034A1 (en) * 2013-07-17 2015-01-18 Prematek Srl Procedure and equipment for the consolidation and stabilization of soils.
CN103774674A (en) * 2014-01-15 2014-05-07 西安建筑科技大学 Support structure for steel tube underpinned pile and anchor rod deep pit and construction method thereof
CN103774674B (en) * 2014-01-15 2016-04-13 西安建筑科技大学 A kind of steel pipe underpinned pile and anchor pole deep foundation pit supporting structure and construction method thereof
IT201800007020A1 (en) * 2018-07-09 2020-01-09 System and method for the injection of expanding resins in land to be consolidated.
WO2020011414A1 (en) * 2018-07-09 2020-01-16 Thur S.R.L. System and method for injecting expanding resins into soils to be consolidated

Also Published As

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EP1922449A1 (en) 2008-05-21
AT552385T (en) 2012-04-15
EP1922449B1 (en) 2012-04-04

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