EP2141287B1 - Method of constructing a retaining wall - Google Patents

Method of constructing a retaining wall Download PDF

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Publication number
EP2141287B1
EP2141287B1 EP09007934A EP09007934A EP2141287B1 EP 2141287 B1 EP2141287 B1 EP 2141287B1 EP 09007934 A EP09007934 A EP 09007934A EP 09007934 A EP09007934 A EP 09007934A EP 2141287 B1 EP2141287 B1 EP 2141287B1
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Prior art keywords
wall
bores
load distribution
load
cavities
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German (de)
French (fr)
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EP2141287A1 (en
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Udo Sinner
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Bau-Sanierungstechnik GmbH
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Bau-Sanierungstechnik GmbH
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/02—Retaining or protecting walls
    • E02D29/0225—Retaining or protecting walls comprising retention means in the backfill
    • E02D29/0233—Retaining or protecting walls comprising retention means in the backfill the retention means being anchors

Definitions

  • the invention relates to a method for securing retaining walls, wherein at the back rinsed load distribution cavities and wall bores through the retaining wall into the load distribution cavities are executed and wherein in the load distribution cavities by filling with mortar load distribution body are formed anchored by means of ground anchors anchor rods are inserted into the wall bores, which anchored in the load distribution cavities rod ends are anchored in the load distribution bodies, and that the wall bores are grouted with mortar.
  • the object of the invention is therefore to provide an effective measure with the simplest possible means to rehabilitate such retaining walls that collapse not only by the upcoming earth pressure, but also by their tendency to the air side.
  • the wall bores with high pressure preferably rinsed by high-pressure rotary lances become. It has been found that in the case of wall bores made in this way, the pull-out resistance of the pressed-in anchor rod is at least 50% higher in comparison with an execution of the wall bores without high-pressure cleaning of the borehole.
  • Fig. 1-4 each show in a simplified vertical section successive steps in securing a retaining wall;
  • Fig. 5 shows a front view in the direction of arrow V in Fig. 4 ,
  • the method for securing retaining walls is explained using the example of a retaining wall 1 to be renovated, behind which soil 2 is present. Due to the earth pressure and often in addition due to insufficient foundation training to be rehabilitated retaining wall 1, as in the Fig. 1-4 already shown a considerable inclination to the air side (left in the Fig. 1-4 ). Due to the consequent shift of the center of gravity of the wall increases the risk that the retaining wall 1 falls over to the air side. This danger is exacerbated if no solid wall bond is given, as is often the case, for example, with a natural stone heavyweight wall or a retaining wall made of loose quarry stone masonry.
  • the masonry core is grouted with mortar to reestablish a solid wall bond.
  • this measure does not contribute significantly to eliminate the loss of stability described by shifting the wall of gravity due to increasing inclination.
  • anchor bores 3 are drilled.
  • anchor holes 4 are rinsed or drilled in the soil 2.
  • a ground anchor 5 is used in each case.
  • a load distribution cavity 8 is flushed out by means of a introduced through the anchor hole 3 high-pressure spout 6 on the back wall 7, after in each load distribution cavity 8 through the retaining wall 1 through a flushing hole 9 and a drain hole 10 was executed.
  • each drain hole 10 is sloping outwardly from the load distribution cavity 8 to the outside.
  • each anchorage hole 3 In addition to the flushing holes 9 and the drainage holes 10, on both sides of each anchorage hole 3 further wall bores 11 are made through the retaining wall 1 into the load distribution cavity 8.
  • All wall borings (flushing holes 9, drainage holes 10 and additional wall borings 11) will then be completed by means of high-pressure rotary lances 12 ( Fig. 3 ) rinsed and cleaned. Subsequently, in each wall bores, namely the flushing holes 9, the drain holes 10 and the other wall bores 11, respectively an anchor rod 13 is inserted ( Fig. 4 ). Then all cavities produced, namely the anchor holes 3, the anchor holes 4, the flushing holes 9, the drain holes 10, the additional wall bores 11 and in particular the load distribution cavities 8 are compressed with mortar.
  • the inserted anchor rods 13 extend over most of the length of the wall bores 9, 10 and 11 and the thickness of the load distribution body 14 produced by the grouting with mortar. Preferably, the inserted anchor rods 13 end at a distance of about 5 cm from the rear side of the load distribution body 14 and the front of the retaining wall 1.
  • the anchor rods 13 are preferably made of stainless steel and consist, for example, of threaded rods to ensure effective anchoring in the surrounding mortar material.
  • the pending from the soil 2 earth pressure is supported under arching effect on the load distribution bodies 14 and thereby largely kept away from the rear wall 7.
  • the retaining wall 1 is connected by means of the inserted in the wall bores 9, 10 and 11 anchor rods 12 with the anchored load distribution bodies 14 power transmitting and thereby receives the required stability, which is also statically detectable.
  • the load distribution body 14 connected in the manner described with the retaining wall 1 are expediently distributed uniformly over the wall surface, for example arranged in two superimposed, staggered rows.
  • the position of the ground anchor of each lower row is in the Fig. 2-4 each indicated by a dot-dash line 15.

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  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Bulkheads Adapted To Foundation Construction (AREA)
  • Piles And Underground Anchors (AREA)
  • Retaining Walls (AREA)
  • Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)

Abstract

The method involves washing a rear side of load distribution-cavities (8), and arranging wall holes (9, 10) in the load distribution-cavities through a retaining wall (1). A load distribution unit is formed in the load distribution-cavities by filling with mortar. The load distribution unit is anchored by a base anchor (5), and anchor rods are inserted into the wall holes. Ends of the anchor rods are anchored to the load distribution unit, where the ends passes into the load distribution-cavities, and the wall holes are injected with the mortar.

Description

Die Erfindung betrifft ein Verfahren zur Sicherung von Stützmauern, wobei an der Rückseite Lastverteilungs-Hohlräume ausgespült und Mauerbohrungen durch die Stützmauer hindurch in die Lastverteilungs-Hohlräume ausgeführt werden und wobei in den Lastverteilungs-Hohlräumen durch Verfüllen mit Mörtel Lastverteilungskörper gebildet werden, die mittels Bodenankern verankert werden, wobei in die Mauerbohrungen Ankerstäbe eingelegt werden, deren in die Lastverteilungs-Hohlräume reichende Stabenden in den Lastverteilungskörpern verankert werden, und dass die Mauerbohrungen mit Mörtel verpresst werden.The invention relates to a method for securing retaining walls, wherein at the back rinsed load distribution cavities and wall bores through the retaining wall into the load distribution cavities are executed and wherein in the load distribution cavities by filling with mortar load distribution body are formed anchored by means of ground anchors anchor rods are inserted into the wall bores, which anchored in the load distribution cavities rod ends are anchored in the load distribution bodies, and that the wall bores are grouted with mortar.

Zur Sanierung alter Stützmauern ist es bekannt, die Stützmauer nach Reinigung der Mauervorderseite neu zu verfugen und den Mauerkern durch Verpressen mit Mörtel zu verfestigen. Dadurch wird ein fester Mauerverbund hergestellt.For the rehabilitation of old retaining walls, it is known to re-grout the retaining wall after cleaning the front wall of the wall and to consolidate the masonry core by pressing with mortar. This creates a solid wall bond.

In vielen Fällen sind aber auch in dieser Weise sanierte Stützmauern durch den Erddruck des dahinter anstehenden Erdreichs gefährdet. Um die Stützmauer von dem die Stabilität gefährdenden Erddruck zu entlasten, ist es bei einem Verfahren der eingangs genannten Gattung bekannt ( EP 0 290 941 B1 ), in hinter der Stützmauer ausgespülten Hohlräumen Lastverteilungskörper auszubilden, die jeweils durch einen durch die Stützmauer und den Lastverteilungskörper hindurch in das dahinter anstehende Erdreich ausgeführten Bodenanker zu verankern. Der Erddruck stützt sich dabei unter Gewölbewirkung an den in vorgegebenen Abständen zueinander angeordneten Lastverteilungskörpern ab, so dass die Stützmauer von dem Erddruck entlastet wird.In many cases, however, rehabilitated retaining walls in this way are endangered by the earth pressure of the soil behind it. In order to relieve the retaining wall of the stability endangering earth pressure, it is in a method of the type mentioned above known ( EP 0 290 941 B1 ), in load behind the retaining wall eroded cavities load distribution body, each through a through the retaining wall and the Load distribution body through anchored in the underlying soil ground anchor. The earth pressure is supported by the effect of a vault at the load distribution bodies arranged at predetermined intervals relative to one another, so that the retaining wall is relieved of the earth pressure.

Wenn die zu sanierende Stützmauer aber beispielsweise wegen unzureichender Fundamentierung und/oder der früheren Einwirkung des Erddrucks nach vorn, d.h. zur Luftseite hin geneigt ist, besteht die Gefahr, dass die Stützmauer auch ohne Einwirkung des Erddrucks ihre Standfestigkeit verliert und zur Luftseite hin stürzt.However, if the retaining wall to be rehabilitated, for example, due to insufficient foundation and / or the former exposure of the earth pressure forward, i. tilted to the air side, there is a risk that the retaining wall loses its stability even without the influence of the earth pressure and crashes to the air side.

Da diese Gefahr im Wesentlichen durch die Verlagerung des Mauerschwerpunkts zur Luftseite hin bedingt ist, kann auch die Herstellung eines festen Mauerverbunds durch Verpressen mit Mörtel die Gefahr nicht beseitigen, dass die Mauer zur Luftseite hin umstürzt.Since this danger is essentially due to the shift of the center of gravity of the wall towards the air side, the production of a solid wall composite by grouting with mortar can not eliminate the risk that the wall will overturn towards the air side.

Aufgabe der Erfindung ist es daher, mit möglichst einfachen Mitteln eine wirksame Maßnahme zu schaffen, um auch solche Stützmauern zu sanieren, die nicht nur durch den anstehenden Erddruck, sondern auch durch ihre Neigung zur Luftseite hin einsturzgefährdet sind.The object of the invention is therefore to provide an effective measure with the simplest possible means to rehabilitate such retaining walls that collapse not only by the upcoming earth pressure, but also by their tendency to the air side.

Diese Aufgabe wird bei einem Verfahren der eingangs genannten Gattung erfindungsgemäß dadurch gelöst, dass zur Herstellung der Lastverteilungs-Hohlräume ausgeführte Spül- und Ablaufbohrungen als Mauerbohrungen zur Aufnahme von Ankerstäben verwendet werden und dass zusätzlich zu den Spül- und Ablaufbohrungen weitere Mauerbohrungen vorgenommen werden.This object is achieved in a method of the type mentioned in the present invention that executed to produce the load distribution cavities rinsing and drain holes are used as wall bores for receiving anchor rods and that in addition to the Rinsing and drainage holes further Mauerbohrungen be made.

Durch die in die Mauerbohrungen eingelegten und anschließend sowohl in den Lastverteilungskörpern als auch in den Mauerbohrungen der Stützmauer verankerten Ankerstäbe wird insbesondere auch in horizontaler Richtung eine kraftübertragende Verbindung zwischen den Lastverteilungskörpern und der Stützmauer hergestellt. Da die Lastverteilungskörper in der schon bekannten Weise mittels der Bodenanker im Erdreich verankert sind, können die durch die Schrägstellung der Stützmauer verursachten Horizontalkräfte über die Lastverteilungskörper und die Bodenanker in den hinter der Stützmauer anstehenden Boden eingeleitet werden. Die gesamte Stützmauer wird somit in horizontaler Richtung verankert. Ein Verlust ihrer Standfestigkeit infolge einer Verlagerung des Mauerschwerpunkts zur Luftseite hin wird zuverlässig und in statisch nachprüfbarer Weise verhindert.By anchored in the wall bores and then anchored both in the load distribution bodies and in the wall bores of the retaining wall tie rods, a force-transmitting connection between the load distribution bodies and the retaining wall is made in particular in the horizontal direction. Since the load distribution body are anchored in the well-known manner by means of ground anchors in the ground, caused by the inclination of the retaining wall horizontal forces on the load distribution body and the ground anchors can be introduced into the pending behind the retaining wall bottom. The entire retaining wall is thus anchored in the horizontal direction. A loss of their stability due to a shift of the center of gravity of the wall towards the air side is reliably prevented in a statically verifiable manner.

Ausgehend von einer Sicherung von Stützmauern mittels Lastverteilungskörpern wird die zusätzliche und für die Standsicherheit der Stützmauer wesentliche Sanierung mit verhältnismäßig geringem zusätzlichem Aufwand erzielt, weil zur Herstellung der Lastverteilungs-Hohlräume ausgeführte Spül- und Ablaufbohrungen, die somit ohnehin vorhanden sind, als Mauerbohrungen zur Aufnahme von Ankerstäben verwendet werden können und zusätzlich zu den Spül- und Ablaufbohrungen weitere Mauerbohrungen vorgenommen werden, um eine Verankerung der Stützmauer mittels Ankerstäben an zusätzlichen Stellen vorzunehmen.Based on a backup of retaining walls by means of load distribution bodies, the additional and essential for the stability of the retaining wall renovation is achieved with relatively little additional effort, because for the production of load distribution cavities executed rinsing and drain holes, which are thus already available as a wall bores for receiving Anchor rods can be used and in addition to the flushing and drainage holes further masonry holes are made to anchor the retaining wall by means of anchor rods at additional locations.

In weiterer Ausgestaltung des erfindungsgemäßen Verfahrens ist vorgesehen, dass die Mauerbohrungen mit Hochdruck, vorzugsweise mittels Hochdruckrotationslanzen ausgespült werden. Es hat sich ergeben, dass bei in dieser Weise ausgeführten Mauerbohrungen der Herausziehwiderstand des eingepressten Ankerstabs gegenüber einer Ausführung der Mauerbohrungen ohne Hochdruckreinigung des Bohrlochs um mindestens 50 % höher liegt.In a further embodiment of the method according to the invention it is provided that the wall bores with high pressure, preferably rinsed by high-pressure rotary lances become. It has been found that in the case of wall bores made in this way, the pull-out resistance of the pressed-in anchor rod is at least 50% higher in comparison with an execution of the wall bores without high-pressure cleaning of the borehole.

Weitere vorteilhafte Ausgestaltungen des Erfindungsgedankens sind Gegenstand weiterer Unteransprüche.Further advantageous embodiments of the inventive concept are the subject of further subclaims.

Die Erfindung wird nachfolgend an einem Ausführungsbeispiel näher erläutert, das in der Zeichnung dargestellt ist.The invention will be explained in more detail using an exemplary embodiment, which is shown in the drawing.

Die Fig. 1-4 zeigen jeweils in einem vereinfachten senkrechten Schnitt aufeinanderfolgende Verfahrensschritte bei der Sicherung einer Stützmauer; Fig. 5 zeigt eine Frontansicht in Richtung des Pfeiles V in Fig. 4.The Fig. 1-4 each show in a simplified vertical section successive steps in securing a retaining wall; Fig. 5 shows a front view in the direction of arrow V in Fig. 4 ,

Das Verfahren zur Sicherung von Stützmauern wird am Beispiel einer zu sanierenden Stützmauer 1 erläutert, hinter der Erdreich 2 ansteht. Durch den Erddruck und oftmals zusätzlich infolge unzureichender Fundamentausbildung hat die zu sanierende Stützmauer 1, wie in den Fig. 1-4 gezeigt, bereits eine erhebliche Neigung zur Luftseite hin (nach links in den Fig. 1-4) eingenommen. Durch die dadurch bedingte Verlagerung des Mauerschwerpunkts nimmt die Gefahr zu, dass die Stützmauer 1 zur Luftseite hin umstürzt. Diese Gefahr wird noch verstärkt, wenn kein fester Mauerverbund gegeben ist, wie es beispielsweise bei einer Naturstein-Schwergewichtsmauer oder einer aus losem Bruchsteinmauerwerk ausgeführten Stützmauer häufig der Fall ist. Soweit erforderlich, kann nach Reinigung der Mauervorderseite und neuer Verfugung ein Verpressen des Mauerkerns mit Mörtel erfolgen, um wieder einen festen Mauerverbund herzustellen. Diese Maßnahme trägt jedoch noch nicht wesentlich dazu bei, den beschriebenen Stabilitätsverlust durch Verlagerung des Mauerschwerpunkts infolge zunehmender Neigung zu beseitigen.The method for securing retaining walls is explained using the example of a retaining wall 1 to be renovated, behind which soil 2 is present. Due to the earth pressure and often in addition due to insufficient foundation training to be rehabilitated retaining wall 1, as in the Fig. 1-4 already shown a considerable inclination to the air side (left in the Fig. 1-4 ). Due to the consequent shift of the center of gravity of the wall increases the risk that the retaining wall 1 falls over to the air side. This danger is exacerbated if no solid wall bond is given, as is often the case, for example, with a natural stone heavyweight wall or a retaining wall made of loose quarry stone masonry. If necessary, can after cleaning the front of the wall and new grouting, the masonry core is grouted with mortar to reestablish a solid wall bond. However, this measure does not contribute significantly to eliminate the loss of stability described by shifting the wall of gravity due to increasing inclination.

Durch die Stützmauer 1 werden Ankerbohrungen 3 gebohrt. In Verlängerung der Ankerbohrungen 3 werden Ankerlöcher 4 im Erdreich 2 ausgespült oder gebohrt. In jede Ankerbohrung 3 und das zugeordnete Ankerloch 4 wird jeweils ein Bodenanker 5 eingesetzt. Anschließend wird mittels einer durch die Ankerbohrung 3 eingeführten Hochdruck-Spüllanze 6 an der Mauerrückseite 7 jeweils ein Lastverteilungs-Hohlraum 8 ausgespült, nachdem in jeden Lastverteilungs-Hohlraum 8 durch die Stützmauer 1 hindurch eine Spülbohrung 9 und eine Ablaufbohrung 10 ausgeführt wurde.Through the retaining wall 1 anchor bores 3 are drilled. In extension of the anchor holes 3 anchor holes 4 are rinsed or drilled in the soil 2. In each anchor hole 3 and the associated anchor hole 4, a ground anchor 5 is used in each case. Subsequently, a load distribution cavity 8 is flushed out by means of a introduced through the anchor hole 3 high-pressure spout 6 on the back wall 7, after in each load distribution cavity 8 through the retaining wall 1 through a flushing hole 9 and a drain hole 10 was executed.

Während die Ankerbohrungen 3 und Spülbohrungen 9 von der Luftseite der Stützmauer 2 her zum Lastverteilungs-Hohlraum 8 abfallend verlaufen, verläuft jede Ablaufbohrung 10 entgegengesetzt vom Lastverteilungs-Hohlraum 8 nach außen hin abfallend.While the anchor holes 3 and scavenging bores 9 are descending from the air side of the retaining wall 2 to the load distribution cavity 8, each drain hole 10 is sloping outwardly from the load distribution cavity 8 to the outside.

Zusätzlich zu den Spülbohrungen 9 und den Ablaufbohrungen 10 werden beiderseits jeder Ankerbohrung 3 weitere Mauerbohrungen 11 durch die Stützmauer 1 hindurch in den Lastverteilungs-Hohlraum 8 ausgeführt.In addition to the flushing holes 9 and the drainage holes 10, on both sides of each anchorage hole 3 further wall bores 11 are made through the retaining wall 1 into the load distribution cavity 8.

Alle Mauerbohrungen (Spülbohrungen 9, Ablaufbohrungen 10 und zusätzliche Mauerbohrungen 11) werden anschließend mittels Hochdruck-Rotationslanzen 12 (Fig. 3) ausgespült und gereinigt. Anschließend wird in alle Mauerbohrungen, nämlich die Spülbohrungen 9, die Ablaufbohrungen 10 und die weiteren Mauerbohrungen 11, jeweils ein Ankerstab 13 eingelegt (Fig. 4). Sodann werden alle hergestellten Hohlräume, nämlich die Ankerbohrungen 3, die Ankerlöcher 4, die Spülbohrungen 9, die Ablaufbohrungen 10, die zusätzlichen Mauerbohrungen 11 und insbesondere die Lastverteilungs-Hohlräume 8 mit Mörtel verpresst.All wall borings (flushing holes 9, drainage holes 10 and additional wall borings 11) will then be completed by means of high-pressure rotary lances 12 ( Fig. 3 ) rinsed and cleaned. Subsequently, in each wall bores, namely the flushing holes 9, the drain holes 10 and the other wall bores 11, respectively an anchor rod 13 is inserted ( Fig. 4 ). Then all cavities produced, namely the anchor holes 3, the anchor holes 4, the flushing holes 9, the drain holes 10, the additional wall bores 11 and in particular the load distribution cavities 8 are compressed with mortar.

Die eingelegten Ankerstäbe 13 erstrecken sich über den größten Teil der Länge der Mauerbohrungen 9, 10 und 11 und der Dicke der durch das Verpressen mit Mörtel hergestellten Lastverteilungskörper 14. Vorzugsweise enden die eingelegten Ankerstäbe 13 im Abstand von jeweils etwa 5 cm vor der Rückseite des Lastverteilungskörpers 14 und der Vorderseite der Stützmauer 1. Die Ankerstäbe 13 sind vorzugsweise aus Edelstahl hergestellt und bestehen beispielsweise aus Gewindestäben, um eine wirkungsvolle Verankerung in dem umgebenden Mörtelmaterial zu gewährleisten.The inserted anchor rods 13 extend over most of the length of the wall bores 9, 10 and 11 and the thickness of the load distribution body 14 produced by the grouting with mortar. Preferably, the inserted anchor rods 13 end at a distance of about 5 cm from the rear side of the load distribution body 14 and the front of the retaining wall 1. The anchor rods 13 are preferably made of stainless steel and consist, for example, of threaded rods to ensure effective anchoring in the surrounding mortar material.

Die in die Ankerlöcher 4 eingelegten und mit Mörtel verpressten Bodenanker 5 bilden eine Erdvernagelung der Lastverteilungskörper 14. Der aus dem Erdreich 2 anstehende Erddruck wird unter Gewölbewirkung an den Lastverteilungskörpern 14 abgestützt und dadurch weitgehend von der Mauerrückseite 7 ferngehalten. Die Stützmauer 1 ist mittels der in den Mauerbohrungen 9, 10 und 11 eingelegten Ankerstäbe 12 mit den verankerten Lastverteilungskörpern 14 kraftübertragend verbunden und erhält dadurch die erforderliche Standsicherheit, die auch statisch nachweisbar ist.The ground anchors inserted into the anchor holes 4 and pressed with mortar form a Erdnorkung the load distribution body 14. The pending from the soil 2 earth pressure is supported under arching effect on the load distribution bodies 14 and thereby largely kept away from the rear wall 7. The retaining wall 1 is connected by means of the inserted in the wall bores 9, 10 and 11 anchor rods 12 with the anchored load distribution bodies 14 power transmitting and thereby receives the required stability, which is also statically detectable.

Wie in Fig. 5 gezeigt, werden die in der beschriebenen Weise mit der Stützmauer 1 verbundenen Lastverteilungskörper 14 zweckmäßigerweise gleichmäßig über die Mauerfläche verteilt angeordnet, beispielsweise in zwei übereinander angeordneten, gegeneinander versetzten Reihen. Die Lage der Erdanker der jeweils unteren Reihe ist in den Fig. 2-4 jeweils durch eine strichpunktierte Linie 15 angedeutet.As in Fig. 5 shown, the load distribution body 14 connected in the manner described with the retaining wall 1 are expediently distributed uniformly over the wall surface, for example arranged in two superimposed, staggered rows. The position of the ground anchor of each lower row is in the Fig. 2-4 each indicated by a dot-dash line 15.

Claims (6)

  1. Method for securing retaining walls (1), wherein load-distribution cavities (8) are flushed out on the rear side (7) and wall bores (9, 10) are made through the retaining wall into the load-distribution cavities, and wherein load-distribution bodies (14), which are anchored by means of ground anchors, are formed in the load-distribution cavities by filling with mortar, wherein anchor rods (13) are inserted into the wall bores (9, 10, 11), the ends of which rods, which extend into the load-distribution cavities (8), being anchored in the load-distribution bodies (14), and wherein the wall bores (9, 10, 11) are injected with mortar, characterized in that flushing and drainage bores (9, 10), which are made in order to produce the load-distribution cavities (8), are used as wall bores for receiving anchor rods (13), and in that, in addition to the flushing and drainage bores (9, 10), further wall bores (11) are formed.
  2. Method according to Claim 1, characterized in that the wall bores (9, 10, 11) are flushed out at high pressure.
  3. Method according to Claim 2, characterized in that the wall bores (9, 10, 11) are flushed out by means of high-pressure rotary lances (12).
  4. Method according to one of the preceding claims, characterized in that the inserted anchor rods (13) extend over most of the length of the wall bores (9, 10, 11) and over the thickness of the load-distribution bodies (14).
  5. Method according to Claim 4, characterized in that the inserted anchor rods (13) terminate at a distance of each in case approximately 5 cm before the rear side of the load-distribution body (14) and before the front side of the retaining wall (1).
  6. Method according to one of the preceding claims, characterized in that the anchor rods (13) consist of threaded rods.
EP09007934A 2008-07-01 2009-06-17 Method of constructing a retaining wall Active EP2141287B1 (en)

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DE102008030671A DE102008030671A1 (en) 2008-07-01 2008-07-01 Method for securing retaining walls

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EP2141287A1 EP2141287A1 (en) 2010-01-06
EP2141287B1 true EP2141287B1 (en) 2011-11-09

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EP (1) EP2141287B1 (en)
AT (1) ATE532910T1 (en)
DE (1) DE102008030671A1 (en)
ES (1) ES2376964T3 (en)
HR (1) HRP20120125T1 (en)
PL (1) PL2141287T3 (en)
PT (1) PT2141287E (en)
SI (1) SI2141287T1 (en)

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CN112411570A (en) * 2020-11-11 2021-02-26 贵州建工集团第一建筑工程有限责任公司 Emergency support method for foundation pit soil collapse
CN114703895B (en) * 2022-03-04 2023-11-17 中铁第五勘察设计院集团有限公司 Reinforcing structure for downward penetrating construction of open cut tunnel with small included angle and construction method

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DE3408461A1 (en) * 1984-03-08 1985-09-19 Kurt G. Dipl.-Ing. 6100 Darmstadt Ross METHOD FOR RENOVATING SUPPORT WALLS
DE3716100A1 (en) 1987-05-14 1988-12-01 Ross Kurt G METHOD FOR SECURING SUPPORT WALLS
DE102008018382A1 (en) * 2008-04-11 2009-10-15 Bau-Sanierungstechnik Gmbh Method for securing retaining walls

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PL2141287T3 (en) 2012-03-30
EP2141287A1 (en) 2010-01-06
DE102008030671A1 (en) 2010-01-07
SI2141287T1 (en) 2012-03-30
ES2376964T3 (en) 2012-03-21
ATE532910T1 (en) 2011-11-15
HRP20120125T1 (en) 2012-02-29
PT2141287E (en) 2012-02-03

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