EP1922449B1 - Method for consolidating soils and stabilizing foundations - Google Patents

Method for consolidating soils and stabilizing foundations Download PDF

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Publication number
EP1922449B1
EP1922449B1 EP06777128A EP06777128A EP1922449B1 EP 1922449 B1 EP1922449 B1 EP 1922449B1 EP 06777128 A EP06777128 A EP 06777128A EP 06777128 A EP06777128 A EP 06777128A EP 1922449 B1 EP1922449 B1 EP 1922449B1
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Prior art keywords
foundation
injection
soil
injections
hollow anchor
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EP06777128A
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German (de)
French (fr)
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EP1922449A1 (en
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Ilario Bridi
Enrico Nardelli
Fabiola Panizza
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Prematek Srl
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Prematek Srl
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Priority claimed from ITBZ20050045 external-priority patent/ITBZ20050045A1/en
Priority claimed from ITBZ20050065 external-priority patent/ITBZ20050065A1/en
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Publication of EP1922449A1 publication Critical patent/EP1922449A1/en
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/32—Foundations for special purposes
    • E02D27/48—Foundations inserted underneath existing buildings or constructions

Definitions

  • the 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, the lifting of the structure, including its foundations to bring this, for example, from an inclined position in a normal position.
  • the generic EP 1536069 describes a method for soil stabilization and stabilization of building foundations by compaction of the soil in the area substantially under the foundations by injecting expanding and hardening resins through pipes which are inserted into bores, wherein after injection through these pipes, the lifting of the foundation and took place Solidification of the soil is detected. A use of the remaining pipes in the ground as tie rods, or a determination of the same at the foundation, for the purpose of permanent stabilization, is not provided.
  • the invention has as its object to provide a method of the type mentioned which is suitable for the consolidation of soils and the stabilization of the foundations of structures or components, wherein the floors and foundations, which absorb the ongoing and unforeseen loads of a building so on the Ground that the stabilization also, due to physical, chemical and / or geological changes which over time, within the injected resin composition and / or in the consolidated and / or compacted soil mass, can occur, is ensured.
  • 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.
  • 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, Exclude materials such as fiber-reinforced synthetic resins or carbon.
  • the tie rods are inserted in holes that penetrate the foundation. These rods which are preferably themselves, for the purpose of execution of the holes, provided with drill bit, according to the invention along its longitudinal extent with injection holes provided via which an injection into the ground in different depths is feasible.
  • the length of the rods is dimensioned such that they project with their upper end at least slightly beyond the hole provided in the foundation.
  • the injection of synthetic resins in different depths and at different time 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.
  • 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 sleeves for example made of foam rubber, are each, in the longitudinal extension 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 bore hole inside.
  • 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.
  • 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 to reach the anchor rod on the foundation.
  • 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.
  • 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 mortar, liquid mortar) increased;
  • 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.
  • 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 Fig. 1 is a schematic vertical sectional view through a hole 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, in Fig. 1 represented hole in which a hollow anchor rod is inserted which is equipped in different depths with injection openings and sealing sleeves against the return flow of the resin; the upper end of the anchor rod projects beyond the upper surface of the foundation.
  • the Fig. 3 shows the hole velvet, according to Fig. 2 , Introduced 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 cause the lifting of the soil including the foundation.
  • the 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 established between the upper end portion of the hollow anchor rod and the foundation by pouring an adhesive without attaching cuffs or nuts.
  • Fig. 5 shows schematically, partly in section two areas of the same hollow anchor rod according to the invention during the injection phase.
  • the Fig. 6 shows on an enlarged scale the area between the hollow anchor rod and the foundation according to Fig. 4 in which the determination takes place by pouring.
  • the Fig. 7 shows the side view of a conical seal cuff 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).
  • the Fig. 7b shows the side view of an elastic centering device which is attached to an anchor rod (without external profiling).
  • 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.).
  • 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;
  • 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 forwarding 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.
  • connection between the subterranean 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 means mechanical connection between said upper end portions 5d of the rods 5 and support members fixed to the foundation.
  • 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.
  • 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.
  • 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.
  • the injections in the different depth positions can also be achieved by known 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, or depending on the desired order of injection in the different depth positions, the closing devices can be tared or actuated via "ripcords".
  • the determination 15, 15a between the foundation 1a and the individual anchor rods 5 by injection or "pouring" A specific adhesive resins, Injection grout or grout, between the upper end portion 5d of the rod 5 and the corresponding inner wall of the bore 3b in the foundation 1a or by mechanical connection between the end portion 5d of the rods and the foundation 1a by means of known Befest Trentsiguns institute, without to exclude a combined or double determination by mechanical connection and by "pouring".
  • the determination can be carried out by "pouring" particularly resistant by at that part of the anchor rod which penetrates within the bore 3b, the foundation 1a, a nut or other element is attached which has a larger cross-section than those of the rod 5 and which in embedded material 15 is "embedded".

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

Es sind Verfahren und entsprechende Vorrichtungen zur Verfestigung, Verdichtung und Anhebung durch Einspritzen expandierender Kunstharze bekannt welche für Böden gedacht sind die gewissen mechanischen Belastungen ausgesetzt sind welche, z.B. von Gebäuden, von tragenden Bauwerken im Straßen- und Bahnbau, von Bauwerken des Zivilschutzes und dergleichen, ausgeübt werden. Diese Verfestigungsverfahren dienen wesentlich dazu, die Stabilität und oder die Tragfähigkeit des Bodens zu erhöhen, dessen mechanische Beständigkeit zu verbessern und eventuell eine Verdichtung zu erreichen welche das Anheben des Bodens und der Bauwerke welche in diesem gründen, bewirkt.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.

Die JP 8260500 beschreibt ein Einspritzverfahren für eine "chemische Flüssigkeit" in eine Bodenschicht unter die Fundamente eines Bauwerkes um durch die Bodenverdichtung das Anheben des Bauwerkes, samt seiner Fundamente zu bewirken, um dieses, z.B. aus einer geneigten Stellung, in eine Normalstellung zu bringen.The 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, the lifting of the structure, including its foundations to bring this, for example, from an inclined position in a normal position.

Die gattungsgemäße EP 1536069 beschreibt ein Verfahren zur Bodenverfestigung und zur Stabilisierung von Bauwerkfundamenten durch Verdichtung des Bodens im Bereich wesentlich unter den Fundamenten mittels Einspritzen expandierender und aushärtender Kunstharze über Rohre welche in Bohrungen eingeführt werden wobei, nach der Einspritzung über diese Rohre, das erfolgte Anheben des Fundaments und die erfolgte Verfestigung des Bodens festgestellt wird. Eine Nutzung der im Boden verbleibenden Rohre als Ankerstäbe, bzw. eine Festlegung der selben am Fundament, zwecks dauerhafter Stabilisierung, ist nicht vorgesehen.The generic EP 1536069 describes a method for soil stabilization and stabilization of building foundations by compaction of the soil in the area substantially under the foundations by injecting expanding and hardening resins through pipes which are inserted into bores, wherein after injection through these pipes, the lifting of the foundation and took place Solidification of the soil is detected. A use of the remaining pipes in the ground as tie rods, or a determination of the same at the foundation, for the purpose of permanent stabilization, is not provided.

Weiters ist aus der US 5,145,291 bekannt die Verankerung eines Bauwerkfundamentes dadurch zu erreichen, dass in Bohrungen welche durch den Sockel des Fundamentes eines Bauwerkes hindurch ausgeführt werden, Betonpfähle eingespritzt werden.Furthermore, is from the US 5,145,291 known to achieve the anchoring of a building foundation in that concrete holes are injected in holes which are performed through the base of the foundation of a building through.

Die Praxis hat gezeigt dass die Dauer des Verdichtungs- und des Konsolidierungseffektes welcher durch die bekannten Verfahren erreicht wird eng an die Beibehaltung der physikalischen und chemischen Eigenschaften der eingespritzten Kunstharze, an die "korrodierende Wirkung" und/oder an die zersetzende Wirkung der im Boden vorhandenen Wirkstoffe und/oder an die nachfolgenden Veränderungen in der Bodenstruktur, welche z.B. durch Einsickerungen oder durch Vibrationen bewirkt werden, gebunden ist. In bestimmten Fällen hält also das Gleichgewicht welches zwischen den, vom sanierten Bauwerkes verursachten, Belastungen und den Reaktionskräften des, durch das Einspritzen von expandierenden Kunstharzen, verdichteten und konsolidierten Bodens, zeitlich nicht an, wobei unter Umständen Bedingungen geschaffen werden bei welchen die folgenden Setzungen des Bodens nicht mehr von der Struktur und der Bestimmung des Bauwerkes tragbar sind.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 ingredients and / or to the subsequent changes in the soil structure, which eg caused by infiltration or by vibration is bound. In certain cases, therefore, the equilibrium which between the, caused by the rehabilitated structure, loads and the reaction forces of, by the injection of expanding resins, compacted and consolidated soil, not in time, whereby under certain circumstances conditions are created in which the following settlements of Soil are no longer bearable by the structure and design of the structure.

Die Erfindung stellt sich die Aufgabe ein Verfahren der eingangs erwähnten Art zu schaffen welche für die Konsolidierung von Böden und die Stabilisierung der Fundamente von Bauwerken oder Bauelementen geeignet ist, wobei die Böden und Fundamente, welche die andauernden und unvorhergesehenen Belastungen eines Bauwerkes aufnehmen derart an den Boden weiterleiten, dass die Stabilisierung auch, infolge physikalischer, chemischer und/oder geologischer Veränderungen welche im Zeitablauf, innerhalb der eingespritzten Kunstharzmasse und/oder in der konsolidierten und/oder verdichteten Bodenmasse, auftreten können, sichergestellt ist.The invention has as its object to provide a method of the type mentioned which is suitable for the consolidation of soils and the stabilization of the foundations of structures or components, wherein the floors and foundations, which absorb the ongoing and unforeseen loads of a building so on the Ground that the stabilization also, due to physical, chemical and / or geological changes which over time, within the injected resin composition and / or in the consolidated and / or compacted soil mass, can occur, is ensured.

Zur Lösung dieser Aufgabe schlägt die Erfindung vor, dass die Aufnahme der obgenannten andauernden und unvorhergesehenen Belastungen eines Bauwerkes, außer vom, durch Einspritzen von expandierenden Kunstharzen, konsolidierten und/oder verdichteten Boden, zusätzlich von einer metallischen Bewehrung, welche einerseits mit dem besagten Fundament oder mit den Strukturelementen verbunden ist und anderseits, auf zeitlich anhaltende effiziente Weise, von den Fußenden der Bewehrungsstäbe und durch den Scherverbund längs dieser Bewehrungsstäbe getragen wird, erfolgt.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.

Erfindungsgemäß erfolgt die Einspritzung der expandierenden Kunstharze nicht über die üblichen, eher dünnwandigen und glatten Kupfer- oder Kunststoffrohre sondern mittels bekannter hohler, vorzugsweise stark belastbarer, Ankerstäbe aus Stahl, z.B. vom Typ "DYWIDAG", ohne jedoch den Einsatz anderer, eventuell nicht metallischer, Werkstoffe, wie z.B. faserverstärkte Kunstharze oder Karbon, auszuschließen. Die Ankerstäbe werden in Bohrungen welche das Fundament durchdringen, eingeführt. Diese Stäbe welche vorzugsweise selbst, zwecks Ausführung der Bohrlöcher, mit Bohrkrone versehen sind, sind erfindungsgemäß entlang ihrer Längserstreckung mit Einspritzbohrungen versehen über welche eine Einspritzung ins Erdreich in unterschiedlichen Tiefenlagen durchführbar ist. Die Länge der Stäbe ist derart bemessen, dass diese mit ihrem oberen Ende mindestens etwas, über die im Fundament vorgesehene Bohrung vorstehen. Die Einspritzung der Kunstharze in unterschiedlichen Tiefenlagen und in unterschiedlichen Zeitabständen kann über bekannte oder erfindungsgemäße Verschlussvorrichtungen, bzw. über kalibrierte oder gesteuerte Ventile, erfolgen welche an den Einspritzbohrungen der hohlen Ankerstäbe vorgesehen sind. Die Praxis hat gezeigt, dass auf vorteilhafte Weise die Steuerung des Austrittes der Kunstharze durch die Einspritzbohrungen an den hohlen Ankerstäben in unterschiedlichen Tiefenlagen durchführbar ist indem die Einspritzung der Harze über ein eigenes Einspritzrohr (vorzugsweise aus Kupfer) erfolgt welches innerhalb der besagten hohlen Ankerstange längsverschiebbar ist. Die Einspritzung der Kunstharze erfolgt dabei indem diese zuerst aus den Einspritzbohrungen am unteren Ende der Ankerstange austreten, die folgenden Einspritzungen erfolgen in einer höheren Tiefenlage, über die nächst höher vorgesehenen Einspritzbohrungen, indem das innere Rohr jeweils progressiv mit seinem unteren Ende nach oben gezogen wird und jeweils eine höhere Position zu den in einer bestimmten Tiefenlage angeordneten Einspritzbohrungen an der Ankerstange einnimmt.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, Exclude materials such as fiber-reinforced synthetic resins or carbon. The tie rods are inserted in holes that penetrate the foundation. These rods which are preferably themselves, for the purpose of execution of the holes, provided with drill bit, according to the invention along its longitudinal extent with injection holes provided via which an injection into the ground in different depths is feasible. The length of the rods is dimensioned such that they project with their upper end at least slightly beyond the hole provided in the foundation. The injection of synthetic resins in different depths and at different time 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.

Erfindungsgemäß werden die Einspritzbereiche in den einzelnen Tiefenlagen durch Dichtungs-Manschetten begrenzt welche den Ringraum zwischen der Bohrlochinnenfläche und der Ankerstangenaußenfläche abdichten und einen Rückfluss des eingespritzten Harzes nach oben verhindert. Diese Manschetten, z.B. aus Schaumgummi, sind jeweils, in Längserstreckung des Ankerstabes, zwischen den Einspritzbohrungen der jeweiligen Tiefenlage, fest an der Ankerstange angebracht und legen sich elastisch an der Bohrlochinnenfläche an. Die Ankerstange kann weiters mit elastischen Abstandselementen versehen werden damit möglichst eine koaxiale Position des Ankerstabes innerhalb des Bohrloches gesichert ist. Nach der, durch die Einspritzung, Aufschäumung und Aushärtung des Kunstharzes, erreichten Verfestigung und/oder Verdichtung des Bodens, wird die Festlegung der oberen Enden aller Ankerstäbe am Fundament durch "Eingießen" spezifischer Haft-Kunststoffe, Einspritzmörtel oder Flüssigmörtel in den Freiraum, zwischen dem oberen Bereich der hohlen Ankerstange und der Innenwand des entsprechenden Bohrloches im Fundament, durchgeführt. Erfindungsgemäß kann weiters am oberen Ende der Ankerstange, welche sich durch die Bohrung im Fundament erstreckt, eine Gewindemuffe oder eine Mutter aufgesetzt werden welche derart bemessen sind, dass diese eine Position innerhalb des Bohrloches im Fundament einnehmen können um durch das "Eingießen" eine effiziente Verankerung der Ankerstange am Fundament zu erreichen. Die Erfindung schließt nicht aus, dass die durch "Eingießen" erreichte Verbindung zusätzlich durch bekannte metallische Befestigunselemente gesichert wird, oder dass die Verankerung ausschließlich über bekannte Befestigungsmittel, mit oder ohne den Einsatz bekannter Haftmittel, erreicht wird.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 sleeves, for example made of foam rubber, are each, in the longitudinal extension 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 bore hole inside. 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 densification of the soil achieved by the injection, foaming and curing of the resin, the definition of the upper ends of all anchor rods on the foundation by "pouring" specific adhesive plastics, injection mortar or liquid mortar in the space between the Upper portion 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 to reach the anchor rod on the foundation. 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.

Die Anzahl der hohlen Ankerstäbe welche fest mit dem Fundament des Bauwerkes verbunden sind, sind in der Lage die andauernden und zufälligen Belastungen, am Fuß der Ankerstäbe und durch Scherverbund längs der selben Ankerstäbe, aufzunehmen, wobei der Scherverbund wegen der Verfestigung und/oder Verdichtung des Bodens infolge der Einspritzung und der Aufschäumung der Kunstharze besonders effizient ist, aber vor allem auch noch, infolge eventueller Veränderungen welche im Laufe der Zeit im Kunstharz, bzw. im Boden, stattfinden, weitgehend ausreichend ist.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.

Erfindungsgemäß ist mindestens jener Teil der Ankerstange, welcher den Querschnitt des Fundamentes durchquert, mit einem Außengewinde, mit ringförmigen Außenrillen oder mit einer anderen Profilierung versehen welche die Griffigkeit für die, zwischen der Ankerstange und der Innenwand der Bohrung im Fundament, eingegossenen oder eingespritzten Materialien (spezifische Haft-Kunstharze, Injektionsmörtel, Flüssigmörtel) erhöht; alternativ kann dieser Teil der Ankerstange mit einem Querschnitt oder einer Form versehen sein welche für die Festlegung an Trägerelementen geeignet ist welche ihrerseits am Fundament verankert sind. Vorteilhafterweise ist die gesamte Ankerstange mit Außengewinde oder mit einer Außenprofilierung versehen welche geeignet ist die Kontaktfläche mit dem verfestigten Boden zu erhöhen um einen erhöhten Scherverbund entlang der Ankerstange, welche vor allem axial wirkende Belastungen aufnimmt, zu erreichen.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 mortar, liquid mortar) increased; 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.

Die Erfindung wird anschließend anhand eines, in den beigelegten Zeichnungen schematisch dargestellten, vorzuziehenden Ausführungsbeispieles eines erfindungsgemäßen Verfahrens zur Verfestigung und/oder Verdichtung des Bodens, zwecks einer zeitlich andauernden Stabilisierung des Bodens und der Fundamente eines Bauwerkes, näher erklärt.The invention will be explained in more detail with reference to a preferred exemplary embodiment of a method according to the invention for consolidating and / or compacting the soil, schematically illustrated in the attached drawings, for stabilizing the soil and the foundations of a structure over a period of time.

Die Fig. 1 ist eine schematische vertikale Schnittdarstellung durch eine Bohrung welche in geneigter Position das Fundament eines Bauwerkes und den darunterliegenden Boden durchdringt wobei dieser anschließend zu verfestigen und zu verdichten ist um ein Anheben des Fundamentes zu erreichen.The Fig. 1 is a schematic vertical sectional view through a hole 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.

Die Fig. 2 zeigt die selbe, in Fig. 1 dargestellte, Bohrung in welche eine hohle Ankerstange eingeführt ist welche in unterschiedlichen Tiefenlagen mit Einspritzöffnungen und Dichtungs-Manschetten gegen den Rückfluss des Harzes ausgestattet ist; das obere Ende der Ankerstange steht über die obere Oberfläche des Fundamentes vor.The Fig. 2 shows the same, in Fig. 1 represented hole in which a hollow anchor rod is inserted which is equipped in different depths with injection openings and sealing sleeves against the return flow of the resin; the upper end of the anchor rod projects beyond the upper surface of the foundation.

Die Fig. 3 zeigt die Bohrung samt, gemäß Fig. 2, eingeführter hohler Ankerstange, wobei in diese ein axial gleitendes Einspritzrohr eingeführt ist um die Einspritzungen in den unterschiedlichen Tiefenlagen durchführen zu können wodurch Verfestigungs- und Verdichtungskörper ausgebildet werden welche das Anheben des Bodens samt dem Fundament bewirken.The Fig. 3 shows the hole velvet, according to Fig. 2 , Introduced 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 cause the lifting of the soil including the foundation.

Die Fig. 4 zeigt die hohle Ankerstange ohne gleitendem Einspritzrohr, nach der Einspritzung und.der Verdichtung des Bodens, nach dem maximalen Anheben des Fundamentes und mit der erfolgten Festlegung zwischen dem oberen Endbereich der hohlen Ankerstange und dem Fundament durch Eingießen eines Haftmittels ohne Anbringung von Manschetten oder Muttern.The 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 established between the upper end portion of the hollow anchor rod and the foundation by pouring an adhesive without attaching cuffs or nuts.

Die Fig. 5 zeigt schematisch, teils in Schnittdarstellung zwei Bereiche der selben hohlen erfindungsgemäßen Ankerstange während der Einspritzphase.The Fig. 5 shows schematically, partly in section two areas of the same hollow anchor rod according to the invention during the injection phase.

Die Fig. 6 zeigt in vergrößertem Maßstab den Bereich zwischen der hohlen Ankerstange und dem Fundament gemäß Fig. 4 in welchem die Festlegung durch Eingießen stattfindet.The Fig. 6 shows on an enlarged scale the area between the hollow anchor rod and the foundation according to Fig. 4 in which the determination takes place by pouring.

Die Fig. 7 zeigt die Seitenansicht einer konischen Dichtungs-Manschette welche elastisch an einer Ankerstange (ohne Außenprofilierung) angebracht ist.The Fig. 7 shows the side view of a conical seal cuff which is elastically attached to an anchor rod (without external profiling).

Die Fig. 7a zeigt die Seitenansicht einer Dichtungs-Manschette welche durch eine Schelle an einer Ankerstange (ohne Außenprofilierung) angebracht ist.The Fig. 7a shows the side view of a seal sleeve which is attached by a clamp to an anchor rod (without external profiling).

Die Fig. 7b zeigt die Seitenansicht einer elastischen Zentriervorrichtung welche an einem Ankerstab (ohne Außenprofilierung) angebracht ist.The Fig. 7b shows the side view of an elastic centering device which is attached to an anchor rod (without external profiling).

Das Fundament 1a für eine durchgehende Mauer eines Bauwerkes nimmt die permanenten und zufälligen Belastungen des Bauwerkes auf um diese an den Boden 1 zu übertragen. Wenn dieser Boden wenig kompakt ist oder wenn, im Falle physikalischer und/oder geologischer Veränderungen, die Ausgewogenheit zwischen den Kräften welche auf das Bauwerk wirken und den Reaktionskräften des Bodens 1 nicht gegeben ist, so ist die Setzungen des Bodens nicht von der strukturellen Gegebenheit und von der Bestimmung des Bauwerkes (Neigung des gesamten Bauwerkes, Ausbildung von Rissen, usw.) tragbar. In diesen und in ähnlichen Fällen wird erfindungsgemäß die Sanierung des Bauwerkes durch Verfestigung des Bodens 1 und durch eventuelle Verdichtung zwecks Anhebung des Bauwerkes mittels Einspritzung expandierender Kunstharze, vorzugsweise in unterschiedlichen Tiefenlagen und in unterschiedlichen Zeitabschnitten, empfohlen; die besagte Verfestigung und eventuelle Verdichtung des Bodens werden jedoch erfindungsgemäß zusätzlich durch eine unterirdische Bewehrung gesichert und dadurch im Zeitablauf garantiert, wobei diese aus der Einführung von verstreut angeordneten Ankerstangen 5 geschaffen wird um die auf das Fundament 1a wirkenden Kräfte in die Bodentiefe weiterzuleiten. Diese Weiterleitung der Belastungen erfolgt auf kombinierte Weise durch den Scherverbund zwischen der Längsoberfläche der einzelnen Ankerstangen 5 und dem verfestigten Boden und durch die Tragkraft an den Fußenden der Ankerstangen welche in den Verfestigungskörpem eingegossen sind. Die Verbindung zwischen der unterirdischen Struktur der Ankerstangen 5 welche in den Festkörpern 5a, 5b, 5c im verdichteten Boden eingegossen sind erfolgt erfindungsgemäß mittels "Eingießen" von Haft-Harzen oder Einspritzmörtel ins Bohrloch am oberen Endabschnitt 5d, mittels Gewindemuffen oder Muttern oder/und mittels mechanischer Verbindung zwischen den besagten oberen Endabschnitten 5d der Stangen 5 und Tragelementen welche am Fundament befestigt sind.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 forwarding 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 subterranean 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 means mechanical connection between said upper end portions 5d of the rods 5 and support members fixed to the foundation.

Das erfindungsgemäße Verfahren umfasst die folgenden Phasen:

  • Ausführung einer Reihe von Bohrungen 3 im Boden 1 welche unterschiedliche Neigung 3i, 3v aufweisen, das Fundament 1a durchdringen 3b oder in dessen unmittelbarer Nähe ausgeführt sind; vorteilhafterweise werden diese Bohrungen mittels hohler mit Bohrkrone versehener Stangen 5 oder mittels spezifischer Bohrstangen durchgeführt;
  • Einführen der entsprechenden hohlen Ankerstangen 5 ohne Bohrkrone welche zwischen den Einspritzbohrungen 5e mit Dichtungs-Manschetten 6 und eventuell mit elastischen Zentriervorrichtungen 9 ausgestattet sind;
  • Einspritzen C des expandierenden Kunstharzes in unterschiedlichen Tiefenlagen über ein gleitendes P, S Einspritzrohr 16 welches vorher in die Ankerstange eingeführt worden ist - alternativ kann die Einspritzung direkt über den Hohlraum der Ankerstange erfolgen wenn die einzelnen Einspritzbohrungen 5e mit bekannten oder mit erfindungsgemäßen kalibrierten oder steuerbaren Verschlussvorrichtungen (10, 11, 13; 12, 14), bzw. mit bekannten Ventilen oder Verschlüssen, versehen ist;
  • Messung der Ausdehnung und/oder des Grades der Verfestigung (z.B. durch Penetrometer) und/oder Messung des Anhebens 1 b des Fundamentes 1 a;
  • eventuelle weitere Einspritzungen von expandierenden Kunstharzen bis die erwünschte Anhebung, bzw. Verfestigung erreicht ist;
  • Festlegung der oberen Endbereiche 5d der hohlen Ankerstangen 5 am Fundament 1a mittels "Eingießen" von Haftharzen oder Injektionsmörtel und/oder durch mechanische Verbindung.
The process according to the invention comprises the following phases:
  • Execution of a series of holes 3 in the bottom 1 which have different inclination 3i, 3v, the foundation 1a penetrate 3b or executed in the immediate vicinity; 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 synthetic 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 calibrated or controllable closure devices according to the invention (10, 11, 13, 12, 14), or provided with known valves or closures;
  • Measurement of the extent and / or degree of solidification (eg by penetrometer) and / or measurement of the lifting 1 b of the foundation 1 a;
  • any further injections of expanding synthetic resins until the desired increase or solidification is achieved;
  • Fixing 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.

Die Durchführung der Bohrungen 3, von denen vorzugsweise ein Teil mit geneigter Achse 3i und ein Teil mit vertikaler Achse 3v oder mit einem anderen Neigungswinkel erstellt wird, erfolgt vorteilhafterweise mittels bekannter hohler Stangen 5 von der Art welche mit Bohrkrone und mit einem Außengewinde versehen ist und mittels Gewindemuffen verbindbar sind. Diese Stangen 5 sind erfindungsgemäß entlang ihrer Längserstreckung mit, unter sich beabstandeten, Einspritzbohrungen 5e versehen welche unterschiedlichen Tiefenlagen entsprechen. Die Bohrungen 3 können ausschließlich mit gleichzeitiger Durchbohrung 3b des Fundamentes, oder können teilweise oder alle in der unmittelbaren Nähe des Fundamentes oder an diesem anliegend, erstellt werden. Die hohle Ankerstange 5 mit Bohrkrone wird, nach Ausziehen aus der Bohrung 3, von der Bohrkrone entledigt und zwischen den einzelnen Tiefenlagen welche durch die Einspritzbohrungen 5e bestimmt sind mitDichtungs- Manschetten 6 zur Verhinderung des Rückflusses des Harzes und eventuell mit Zentriervorrichtungen 9, ausgestattet und anschließend wieder in die Bohrung 3 eingeführt wobei sichergestellt wird, dass das untere Ende der Stange 5 am Boden 3a des Bohrloches 3 aufliegt während das obere Ende 5d der Stange 5 um ein Stück vom Fundament vorsteht welches etwas länger ist als die eventuelle Anhebung 1 b des Fundamentes durch Verdichtung des Bodens 1 ausmacht. In die hohle Stange 5 welche in der Bohrung 3 eingeführt ist wird anschließend ein gleitendes P, R Einspritzrohr 16 eingeführt welches eine entsprechende Länge aufweist so dass die tiefsten Einspritzbohrungen 5e am Endbereich der Sange 5 nicht verschlossen werden; mit dem Einspritzrohr 16 in dieser Position erfolgt die Einspritzung C des expandierenden Harzes wodurch der untere Verfestigungskörper 5a ausgebildet wird. Anschließend können die folgenden Einspritzungen, entsprechend den unterschiedlichen Tiefenlagen, durch Herausziehen R des Einspritzrohres 16 und Ausbildung der Verfestigungskörper 5b, 5c, durch das expandierende Kunstharz, über eine oder mehrere Serien von hohlen Ankerstangen 5 erfolgen von welchen jede Serie eine unterschiedliche Anzahl von Einspritzbohrungen 5e aufweist welche entsprechend unterschiedlicher Tiefenlagen angeordnet sind. Die hohlen Ankerstäbe 5 einer dieser Serien können erfindungsgemäß ausschließlich am unteren Endbereich mit Einspritzbohrungen versehen sein, in diesem Fall wird natürlich die Einspritzung C des Kunstharzes ohne Einspritzrohr 16, direkt über den Hohlraum der Ankerstange 5 durchgeführt.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 region of the Sange 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.

Die Einspritzungen in den unterschiedlichen Tiefenlagen können auch durch bekannte Verschlussvorrichtungen erreicht werden welche an den einzelnen Einspritzbohrungen 5e der Ankerstangen 5 vorgesehen sind. Diese Verschlussvorrichtungen geben den Durchfluss der Einspritzmasse frei sobald ein bestimmter Druck innen im Hohlraum der Ankerstange 5 erreicht ist; die Verschlussvorrichtungen sind je nach Tiefenlage, bzw. je nach gewünschter Reihenfolge der Einspritzung in den unterschiedlichen Tiefenlagen, tariert oder über "Reißleinen" betätigbar.The injections in the different depth positions can also be achieved by known 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, or depending on the desired order of injection in the different depth positions, the closing devices can be tared or actuated via "ripcords".

Die Messung der Verdichtung des Bodens mit Anhebung 1 b des Fundamentes und/oder die eventuelle Messung des Verfestigungsgrades und/oder der Ausdehnung der Verfestigung des Bodens während der Einspritzung und der Expansion des Kunstharzes und/oder nach Abschluss der Einspritzungen, ist Teil des erfindungsgemäßen Verfahrens.The measurement of the compaction of the soil with elevation 1b of the foundation and / or the possible measurement of the degree of solidification and / or the expansion of the solidification of the soil during the injection and the expansion of the synthetic resin and / or after completion of the injection is part of the method according to the invention ,

Nach Anhebung 1b des Fundamentes 1a um das erforderliche Maß und/oder nach Erreichung der erforderlichen Verfestigung des Bodens 1, erfolgt erfindungsgemäß die Festlegung 15, 15a zwischen dem Fundament 1a und den einzelnen Ankerstäben 5 durch Einspritzen oder "Eingießen" A spezifischer Haft-Kunstharze, Einspritzmörtel oder Gießmörtel, zwischen dem oberen Endbereich 5d der Stange 5 und der entsprechenden Innenwand der Bohrung 3b im Fundament 1a oder durch mechanische Verbindung zwischen dem Endbereich 5d der Stäbe und dem Fundament 1a mittels bekannter Befestigunselemente, ohne eine kombinierte oder doppelte Festlegung durch mechanische Verbindung und durch "Eingießen" auszuschließen. Erfindungsgemäß kann die Festlegung durch "Eingießen" besonders widerstandsfähig ausgeführt werden indem an jenem Teil der Ankerstange welcher, innerhalb der Bohrung 3b, das Fundament 1a durchdringt, eine Mutter oder ein anderes Element angebracht wird welches größeren Querschnitt als jenen der Stange 5 aufweist und welches im eingegossenen Material 15 "eingebettet" wird.After raising 1b of the foundation 1a to the required extent and / or after achieving the required solidification of the bottom 1, according to the invention, the determination 15, 15a between the foundation 1a and the individual anchor rods 5 by injection or "pouring" A specific adhesive resins, Injection grout or grout, between the upper end portion 5d of the rod 5 and the corresponding inner wall of the bore 3b in the foundation 1a or by mechanical connection between the end portion 5d of the rods and the foundation 1a by means of known Befestigungsigunselemente, without to exclude a combined or double determination by mechanical connection and by "pouring". According to the invention, the determination can be carried out by "pouring" particularly resistant by at that part of the anchor rod which penetrates within the bore 3b, the foundation 1a, a nut or other element is attached which has a larger cross-section than those of the rod 5 and which in embedded material 15 is "embedded".

Claims (6)

  1. Method for soil consolidation and for stabilizing building foundations by consolidating and/or compacting the soil in the region essentially below the foundations by means of injecting expanding and curing synthetic resins via pipes which are inserted into boreholes, characterized in that the pipes are hollow anchor bars (5), and in that, after the injection (C) via the hollow anchor bars (5) and after determining the lifting (1b) of the foundation (1a) that has taken place and/or the consolidation of the soil (1) that has taken place, the foundation (1a) and the individual hollow anchor bars (5) are fastened together.
  2. Method according to Claim 1, characterized in that the injection (C) of the expanding synthetic resins is carried out at different depth positions and at different time intervals.
  3. Method 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 time period at a less deep position, in that in a following time period at least one series of injections is carried out at at least one deeper position, and in that, in the case of injections at deeper positions, those injections which are carried out in the higher position via the same hollow anchor bars (5) are carried out substantially at the same depth position of the first series of injections.
  4. Method according to Claim 1, characterized in that, as a result of determining the required lifting (1b) of the foundation (1a) that has taken place, or the required consolidation of the soil (1), the foundation (1a) and the individual hollow anchor rods (5) are fastened together by "pouring in" (A) or injecting specific adhesive synthetic resins, injection mortar or liquid mortar between the upper regions of the anchor bars (5) and the inner walls of the corresponding boreholes (3b), from which the upper ends of said anchor rods (5) project.
  5. Method according to Claim 1, characterized in that, after determining the required lifting (1b) of the foundation (1a) that has taken place, or the required consolidation of the soil, the foundation (1a) and the individual hollow anchor rods (5) are fastened together by mechanical fastening directly, by means of known fastening elements, or indirectly, by means of metal holders which are fixed using known fastening means.
  6. Method according to Claim 1, characterized in that the synthetic resin is injected via an injection tube (16) which can be displaced (P, R) axially inside the hollow space of the rod (5), wherein the progressive extraction (R) of the tube (16) causes the injection holes (5e) to open progressively from the lowermost depth position to the highermost depth position.
EP06777128A 2005-09-06 2006-08-31 Method for consolidating soils and stabilizing foundations Active EP1922449B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ITBZ20050045 ITBZ20050045A1 (en) 2005-09-06 2005-09-06 PROCEDURE AND EQUIPMENT FOR CONSOLIDATION AND STABILIZATION OF LAND WITH EXPANDING RESINS
ITBZ20050065 ITBZ20050065A1 (en) 2005-12-02 2005-12-02 PROCEDURE AND EQUIPMENT FOR THE CONSOLIDATION OF LAND AND THE STABILIZATION OF FOUNDATIONS
PCT/EP2006/008500 WO2007028534A1 (en) 2005-09-06 2006-08-31 Method and device for consolidating soils and stabilizing foundations

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EP1922449B1 true EP1922449B1 (en) 2012-04-04

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DE102008056261B4 (en) * 2008-11-06 2011-06-16 Bauer Spezialtiefbau Gmbh Ventilzentrierung
ES2343055B1 (en) * 2009-01-20 2011-06-06 Alberto Gonzalo Carracedo PROCEDURE FOR THE REPAIR OF FOUNDATIONS OF AEROGENERATORS.
ITBZ20130034A1 (en) * 2013-07-17 2015-01-18 Prematek Srl PROCEDURE AND EQUIPMENT FOR CONSOLIDATION AND STABILIZATION OF LAND.
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 PROCEDURE FOR INJECTION OF EXPANDING RESINS IN SOILS TO BE CONSOLIDATED.

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FR986619A (en) * 1943-11-25 1951-08-02 Sondages Etanchements Tubing device for equipping injection holes and boreholes
US5145291A (en) * 1990-08-13 1992-09-08 Roger Bullivant Of Texas, Inc. Method for forming a piling beneath a structure
WO1993001363A1 (en) * 1991-07-02 1993-01-21 Gd-Anker Gmbh Injection pipe and process for setting a rock anchor
US6821056B1 (en) * 2003-03-21 2004-11-23 Patricia J. Mansour Grout injecting/structure anchoring system
DE60302904D1 (en) * 2003-11-25 2006-01-26 Uretek Srl Method for stabilizing a subsoil
US7226247B2 (en) * 2003-12-18 2007-06-05 Barrett Robert K Method and apparatus for creating soil or rock subsurface support

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