EP0726383A1 - Injektionsanker für Tunnel und Gräben - Google Patents

Injektionsanker für Tunnel und Gräben Download PDF

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Publication number
EP0726383A1
EP0726383A1 EP96101053A EP96101053A EP0726383A1 EP 0726383 A1 EP0726383 A1 EP 0726383A1 EP 96101053 A EP96101053 A EP 96101053A EP 96101053 A EP96101053 A EP 96101053A EP 0726383 A1 EP0726383 A1 EP 0726383A1
Authority
EP
European Patent Office
Prior art keywords
tube
reinforcing elements
elements
ground
tunnels
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP96101053A
Other languages
English (en)
French (fr)
Other versions
EP0726383B1 (de
EP0726383B2 (de
Inventor
Giuseppe Vago
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sireg SpA Italiana Di Ricerca Elementi Per Geotecnica Soc
Original Assignee
Sireg SpA Italiana Di Ricerca Elementi Per Geotecnica Soc
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=11370485&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0726383(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Sireg SpA Italiana Di Ricerca Elementi Per Geotecnica Soc filed Critical Sireg SpA Italiana Di Ricerca Elementi Per Geotecnica Soc
Publication of EP0726383A1 publication Critical patent/EP0726383A1/de
Publication of EP0726383B1 publication Critical patent/EP0726383B1/de
Application granted granted Critical
Publication of EP0726383B2 publication Critical patent/EP0726383B2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/74—Means for anchoring structural elements or bulkheads
    • E02D5/80—Ground anchors
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D20/00—Setting anchoring-bolts
    • E21D20/02—Setting anchoring-bolts with provisions for grouting
    • E21D20/028—Devices or accesories for injecting a grouting liquid in a bore-hole
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/001—Improving soil or rock, e.g. by freezing; Injections
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
    • E21D9/0642—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining the shield having means for additional processing at the front end
    • E21D9/0671—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining the shield having means for additional processing at the front end with means for consolidating the rock in front of the shield by injection of consolidating substances through boreholes

Definitions

  • the present invention relates to a device for consolidating and stabilizing ground, to preventing collapse or deformation of the ground during excavation of tunnels or trenches.
  • the boreholes are then filled with cement mortar, which acts as a binding and retaining element.
  • the small area of contact between the tube and the cement mortar and the low adhesion coefficient of the tube surface do not allow the resistance of the reinforcement to be transmitted completely to the ground, thus leaving it partly unused.
  • the aim of the present invention is to overcome all the disadvantages listed above, providing a device for stabilizing the excavation or working face and preventing landslides or deformation of the ground in tunnels or trenches, which ensures that the reinforcement is highly resistant.
  • Another aim of the invention is to allow the high tensile strength of the reinforcement to be transmitted to the injection mixture even over very short lengths.
  • Yet another aim of the invention is to guarantee complete and uniform distribution of the cement mixture inside the borehole by means of a plastic tube, advantageously with valves.
  • Yet another aim of the invention is to guarantee the possibility of inserting reinforcements of any length, even in very small spaces and without transport problems, with no breaks or falls in the strength of the reinforcements along the entire borehole.
  • It comprises a plurality of strong elements, made from glass fibres impregnated with synthetic resins (fibreglass-reinforced plastic) mounted by means of centering spacers around a plastic injection tube, preferably a valved tube.
  • the device is kept perfectly centered in the injection mixture by means of centering spacers; in this way the surfaces of the reinforcement, advantageously consisting of fiberglass-reinforced plastic straps, are completely surrounded by the cement, and a possible surface treatment of the straps with quartz sand allows a complete bond between reinforcement and injected mixture, thus allowing the reinforcement's strengthening capacity to be completely transmitted to the ground.
  • the reinforcement advantageously consisting of fiberglass-reinforced plastic straps
  • the strengthening elements of the device that is the straps, can be rolled for transport, and the device itself can be assembled directly near the borehole, allowing continuous reinforcements to be made, without any break in strength, with a length of the order of a hundred metres.
  • Structural elements 4 are inserted in the ground 3 and in the front 1, in order to consolidate the ground.
  • the structural elements inserted in the excavation front 1 serve as reinforcements for consolidation and stabilization of the ground, so as to prevent landslides or deformation of the ground during excavation of the tunnel.
  • the structural elements 4 for consolidation of the front 1 consist of a device comprising a tube 5 which in the figures is shown as a tube with valves around which a plurality of fiberglass straps 7 (three in the example) are positioned by means of centering spacers 6.
  • the centering spacers 6 are put on the tube 5, whilst the strong fiberglass straps 7 are fitted outside them and fixed to them by means of fastening elements 8 consisting, for example, of a metal band or a binding of fiberglass reinforced adhesive tape.
  • the tube 5 is provided with "manchette" valves 10 (i.e. valves comprising an elastic annular band around a perforated portion of the tube) which, as is known, when subjected to pressure within the tube 5, allow the injection mixture to escape through the holes 11 (see Figure 4), completely surrounding the straps 7 and completely filling the borehole 20 in which the device is inserted.
  • "manchette" valves 10 i.e. valves comprising an elastic annular band around a perforated portion of the tube
  • a quartz sand coating is advantageously applied to the surface of said straps, making it possible to obtain a very high friction coefficient and a good chemical compatibility with the injection mixtures.
  • the device according to the invention also has the peculiarity of being able to be assembled easily near the borehole.
  • the fiberglass straps 7 can be rolled in the desired length with an external diameter of less than 2.30 metres, whilst the tubes 5, manufactured in the desired lengths, have threaded ends 30 and are complete with coupling sleeves 31, threaded on the inside.
  • FIG. 6 shows a possible variant embodiment in which the straps 7 are replaced by round bars 7', which may be held together by outer bands 8.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Structural Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Soil Sciences (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Piles And Underground Anchors (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
  • Joining Of Building Structures In Genera (AREA)
EP96101053A 1995-02-09 1996-01-25 Injektionsanker für Tunnel und Gräben Expired - Lifetime EP0726383B2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI950235 1995-02-09
ITMI950235A IT1275231B (it) 1995-02-09 1995-02-09 Dispositivo per l'armatura il consolidamento e la stabilizzazione del terreno particolarmente atto ad impedire frane o deformazioni del fronte di scavo in gallerie o scavi in trincea

Publications (3)

Publication Number Publication Date
EP0726383A1 true EP0726383A1 (de) 1996-08-14
EP0726383B1 EP0726383B1 (de) 1998-01-21
EP0726383B2 EP0726383B2 (de) 2002-03-20

Family

ID=11370485

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96101053A Expired - Lifetime EP0726383B2 (de) 1995-02-09 1996-01-25 Injektionsanker für Tunnel und Gräben

Country Status (4)

Country Link
EP (1) EP0726383B2 (de)
AT (1) ATE162593T1 (de)
DE (1) DE69600147T3 (de)
IT (1) IT1275231B (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0945553A1 (de) * 1998-03-25 1999-09-29 Wolfgang Habe Vorrichtung zum Stabilisieren eines Wandkörpers
KR100715237B1 (ko) 2003-10-10 2007-05-10 정성필 네일링장치
CN102155234A (zh) * 2011-04-08 2011-08-17 中铁上海设计院集团有限公司 非对称的小间距隧道开挖施工方法
WO2014147623A1 (en) 2013-03-20 2014-09-25 Lipsker & Co. Engineering Services (1975) Ltd. Ground anchor system and method
ITMI20131116A1 (it) * 2013-07-03 2015-01-04 Sireg S P A Tubo valvolato a manchette in bioplastica biodegradabile
JP2015098685A (ja) * 2013-11-18 2015-05-28 株式会社大林組 地山補強材および地山補強構造
CN113047864A (zh) * 2021-01-22 2021-06-29 上海应用技术大学 一种深部厚松软围岩巷道环融支护方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2101916A5 (de) * 1970-08-21 1972-03-31 Dyckerhoff & Widmann Ag
GB2018855A (en) * 1978-04-18 1979-10-24 Sondages Injections Forages Production of anchored tierods
FR2467532A1 (fr) * 1979-10-25 1981-04-30 Tokyo Chika Koji Kk Dispositif injecteur de fluides chimiques pour l'amelioration des sols
EP0196451A1 (de) * 1985-03-05 1986-10-08 Dyckerhoff & Widmann Aktiengesellschaft Zugglied für einen Felsbolzen oder dergleichen
DE3536998C1 (de) * 1985-10-17 1986-11-06 Bergwerksverband Gmbh, 4300 Essen Injektionslanze
DE9004177U1 (de) * 1990-04-11 1990-06-28 Bergwerksverband Gmbh, 4300 Essen Injektionsbohranker
FR2643096A1 (fr) * 1989-02-14 1990-08-17 Soletanche Tirant d'ancrage
AT392501B (de) * 1988-12-06 1991-04-25 Mayreder Kraus & Co Ing Verfahren zur erhoehung der standfestigkeit von plastischem, tonig-schluffigem gebirge

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2101916A5 (de) * 1970-08-21 1972-03-31 Dyckerhoff & Widmann Ag
GB2018855A (en) * 1978-04-18 1979-10-24 Sondages Injections Forages Production of anchored tierods
FR2467532A1 (fr) * 1979-10-25 1981-04-30 Tokyo Chika Koji Kk Dispositif injecteur de fluides chimiques pour l'amelioration des sols
EP0196451A1 (de) * 1985-03-05 1986-10-08 Dyckerhoff & Widmann Aktiengesellschaft Zugglied für einen Felsbolzen oder dergleichen
DE3536998C1 (de) * 1985-10-17 1986-11-06 Bergwerksverband Gmbh, 4300 Essen Injektionslanze
AT392501B (de) * 1988-12-06 1991-04-25 Mayreder Kraus & Co Ing Verfahren zur erhoehung der standfestigkeit von plastischem, tonig-schluffigem gebirge
FR2643096A1 (fr) * 1989-02-14 1990-08-17 Soletanche Tirant d'ancrage
DE9004177U1 (de) * 1990-04-11 1990-06-28 Bergwerksverband Gmbh, 4300 Essen Injektionsbohranker

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0945553A1 (de) * 1998-03-25 1999-09-29 Wolfgang Habe Vorrichtung zum Stabilisieren eines Wandkörpers
KR100715237B1 (ko) 2003-10-10 2007-05-10 정성필 네일링장치
CN102155234A (zh) * 2011-04-08 2011-08-17 中铁上海设计院集团有限公司 非对称的小间距隧道开挖施工方法
CN102155234B (zh) * 2011-04-08 2012-12-26 中铁上海设计院集团有限公司 非对称的小间距隧道开挖施工方法
WO2014147623A1 (en) 2013-03-20 2014-09-25 Lipsker & Co. Engineering Services (1975) Ltd. Ground anchor system and method
EP2976466A4 (de) * 2013-03-20 2016-03-16 Lipsker Eng Bodenankersystem und -verfahren
US9617703B2 (en) 2013-03-20 2017-04-11 Lipsker & Co. Engineering Services (1975) Ltd. Ground anchor system and method
US9976274B2 (en) 2013-03-20 2018-05-22 Lipsker & Co. Engineering Services (1975) Ltd. Ground anchor system and method
ITMI20131116A1 (it) * 2013-07-03 2015-01-04 Sireg S P A Tubo valvolato a manchette in bioplastica biodegradabile
EP2821554A1 (de) 2013-07-03 2015-01-07 Sireg S.P.A. Muffenventilmontiertes Rohr aus biologisch abbaubarem Biokunststoff
JP2015098685A (ja) * 2013-11-18 2015-05-28 株式会社大林組 地山補強材および地山補強構造
CN113047864A (zh) * 2021-01-22 2021-06-29 上海应用技术大学 一种深部厚松软围岩巷道环融支护方法

Also Published As

Publication number Publication date
DE69600147T2 (de) 1998-07-02
ITMI950235A1 (it) 1996-08-09
EP0726383B1 (de) 1998-01-21
DE69600147D1 (de) 1998-02-26
ITMI950235A0 (it) 1995-02-09
EP0726383B2 (de) 2002-03-20
DE69600147T3 (de) 2003-02-06
ATE162593T1 (de) 1998-02-15
IT1275231B (it) 1997-07-31

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