EP2098642B1 - Équipement vissé pour creuser afin de construire des diaphragmes - Google Patents

Équipement vissé pour creuser afin de construire des diaphragmes Download PDF

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Publication number
EP2098642B1
EP2098642B1 EP09008797A EP09008797A EP2098642B1 EP 2098642 B1 EP2098642 B1 EP 2098642B1 EP 09008797 A EP09008797 A EP 09008797A EP 09008797 A EP09008797 A EP 09008797A EP 2098642 B1 EP2098642 B1 EP 2098642B1
Authority
EP
European Patent Office
Prior art keywords
tubes
debris
equipment
digging
soil
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.)
Not-in-force
Application number
EP09008797A
Other languages
German (de)
English (en)
Other versions
EP2098642A1 (fr
Inventor
Davide Trevisani
Marco Pedrelli
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.)
Soilmec SpA
Original Assignee
Soilmec SpA
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Filing date
Publication date
Application filed by Soilmec SpA filed Critical Soilmec SpA
Publication of EP2098642A1 publication Critical patent/EP2098642A1/fr
Application granted granted Critical
Publication of EP2098642B1 publication Critical patent/EP2098642B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/13—Foundation slots or slits; Implements for making these slots or slits

Definitions

  • the subject of the invention is a screw equipment and a method for digging to construct diaphragms.
  • Diaphragms are underground vertical walls created for the purpose of impermeabilizing an underground void (e.g., the basement of a building, an underground station, a tank, the area downstream of a dam, etc.) from any lateral infiltration of water or other fluid and for supporting the soil of the walls.
  • an underground void e.g., the basement of a building, an underground station, a tank, the area downstream of a dam, etc.
  • Said diaphragms are made by digging and filling in individually adjacent panels with reinforced concrete.
  • Each panel has a vertical development that can extend for more than fifty metres and can have a cross section having the shape of a rectangle or a rectangle with semicircular shorter sides or ends.
  • the equipment for digging to construct said diaphragms is referred to as clamshell bucket or grab.
  • clamshell buckets are made up of two opposite leaves provided with teeth, which, with a rotation of less than 90 degrees each, remove and gather soil from the bottom of the digging (see Figure 1 ).
  • Set above the leaves is a body with side walls that rest upon the walls of the digging so as to limit any deviation of the digging itself from the vertical direction.
  • clamshell buckets In hard soils, clamshell buckets can work by percussion in order to penetrate better.
  • the soil gathered by the clamshell bucket is then hauled up to the surface by hoisting the entire loaded bucket, using a rope system, and then emptying the bucket by opening the leaves.
  • This operating cycle hence comprises long unproductive steps of lowering, hoisting and unloading.
  • it is of fundamental importance to increase the amount of debris transported during each cycle.
  • Milling wheels may be drums with horizontal axes (see Figure 2 ) or front disks with vertical axes (see Figure 3 ).
  • a purpose of the present invention is to propose a device for digging to construct diaphragms with a digging cycle of the first type, i.e., intermittent, with low costs and without sophisticated systems, characterized by a high loading capacity and absence of vibrations.
  • Another purpose of the invention is to preserve the possibility of making very deep diggings, typical of rope-suspended systems.
  • the invention envisages providing a screw equipment and a method for digging to construct diaphragms as described in claims 1 and 2.
  • Continuous-screw digging equipment is known and its use is very widespread. Said equipment breaks down the soil ahead of it and conveys it to the surface with a screw-conveyor system, which is able to contain a large amount of soil.
  • Such systems which were initially used for soft soils, have undergone a development that renders them suitable and highly productive even in soils that contain stones and soft rocks. The system is substantially quiet and without any vibrations.
  • the device according to the present invention (see Figure 4 ) is made up of a plurality of substantially vertical tubes 1 set alongside one another, each containing a screw 2.
  • the top end of the screw is set in rotation by a motor assembly 3, whilst the bottom end 5 is provided with appropriate tools for breaking down the soil 4.
  • each screw projects from the bottom mouth of the corresponding containment tube 1 and has a diameter larger than that of the tube itself so as to dig a cavity into which the tube 1 can conveniently sink, following the screw 2.
  • the motor drive 3 of the screws can be a single one, with drive systems for the individual screws, or else multiple, with separate motors for each screw.
  • the length of the tubes 1 and of the screws 2 is such as to guarantee a large accumulation volume, which is limited only by the hoisting capacity of the crane which manoeuvres the equipment and by practical limits of encumbrance and transportation. Also the unloading stage is facilitated since it is sufficient to turn the screws in the direction opposite to the loading direction, which is obtained preventing any impact and any environmental disturbance.
  • the cross section of the digging would thus appear as a series of circles 8 set alongside one another or slightly interfering with one another (see top side of Figure 5 ).
  • Said section can readily be transformed into a rectangle with semicircular shorter sides using radiusing blades or additional mills 6 (see bottom side 9 of Figure 5 ). It can also be transformed into a true rectangle, using the aforesaid radiusing blades 6 and other end blades 10 with a sharp edge as additional mills.
  • the equipment according to the invention can be built in two parts of which one, namely the outer one, which has a rectangular layout, can slide on the internal one and is designed for a limited action of percussion around the digging.
  • the internal part comprises the screws and containment tubes. Its function is that of digging, gathering and conveying the debris.
  • the equipment may also be configured as illustrated in Figure 7 , i.e., made up of two separate bodies, the outer one 11 of which can slide, by means of guides 12, on the inner one, which is made up of the aforesaid tubes 1.
  • the internal body which, as has been seen, is made up of screws and tubes, has the task of collecting and accumulating the soil, whilst the external one 11, which can be actuated as a bit in so far as it is provided at the bottom with appropriate tools, can be connected to the rope-hoisting system and has the function of cutting the soil along the boundary of the cross section of digging.
  • the present invention consists of a device having a limited height and is lowered using ropes to greater depths, the only limit being the amount of rope that can be accumulated on the winch.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Earth Drilling (AREA)

Claims (6)

  1. Procédé de creusement destiné à la construction de cloisons dans le sol avec une pluralité de cycles de creusement intermittents au moyen d'un équipement constitué d'une pluralité de tubes sensiblement verticaux disposés les uns le long des autres (1), chacun contenant une vis continue (2), l'extrémité supérieure de chaque vis étant mise en rotation au moyen d'un ensemble moteur (3) alors que l'extrémité inférieure (5) est munie d'outils appropriés pour la désagrégation du sol (4), l'équipement étant périodiquement relevé hors de l'excavation grâce à un système de câbles grâce à un va-et-vient à des profondeurs supérieures à une longueur des tubes verticaux ; chaque cycle de travail incluant les étapes de chargement, de stockage temporaire et de déchargement des déblais du sol en cours d'excavation ;
    le chargement des déblais dans les tubes étant obtenu en faisant tourner les vis (2) dans le sens de l'excavation ;
    le stockage temporaire des déblais consistant en l'intégralité du volume interne des tubes (1) ;
    le procédé étant caractérisé en ce que le déchargement des déblais hors des tubes est obtenu en faisant tourner les vis (2) dans le sens opposé au sens du chargement.
  2. Equipement de creusement destiné à la construction de cloisons dans le sol avec une pluralité de cycles de creusement intermittents au moyen d'un équipement constitué d'une pluralité de tubes sensiblement verticaux disposés les uns le long des autres (1), chacun contenant une vis continue (2), l'extrémité supérieure de chaque vis étant mise en rotation dans le sens de l'excavation au moyen d'un ensemble moteur (3) alors que l'extrémité inférieure (5) est munie d'outils appropriés pour la désagrégation du sol (4) ; l'équipement étant périodiquement relevé hors de l'excavation grâce à un système de câbles grâce à un va-et-vient à des profondeurs supérieures à une longueur des tubes verticaux ; la mise en rotation des vis (2) dans le sens de l'excavation provoquant le chargement des déblais dans les tubes, dont l'intégralité du volume interne (1) représente le stockage temporaire des déblais ;
    caractérisé en ce que les vis (2) peuvent également tourner dans le sens contraire au sens de l'excavation, ce qui provoque le déchargement des déblais à l'extérieur des tubes.
  3. Equipement selon la revendication 2, dans lequel l'intégralité du volume interne desdits tubes (1) représente le stockage temporaire des déblais chargés dans les tubes en faisant tourner les vis (2) dans le sens de l'excavation, caractérisé en ce que le volume desdits tubes est limité par une capacité de levage d'une machine de levage manoeuvrant ledit équipement.
  4. Equipement selon la revendication 1, caractérisé en ce qu'un corps extérieur (11) et un corps intérieur se trouvent emboités sur les tubes (1) ; ledit corps extérieur (11) coulissant sur des guides (12) ; ledit corps intérieur étant composé desdits tubes (1).
  5. Equipement selon la revendication 1, caractérisé en ce que les vis individuelles (2) tournent par paire dans des sens contraires.
  6. Equipement selon la revendication 1, caractérisé en ce qu'il est suspendu à des câbles.
EP09008797A 2004-07-06 2005-07-06 Équipement vissé pour creuser afin de construire des diaphragmes Not-in-force EP2098642B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO20040458 ITTO20040458A1 (it) 2004-07-06 2004-07-06 Attrezzatura ad eliche per lo scavo di diaframmi
EP05014615A EP1614813A1 (fr) 2004-07-06 2005-07-06 Outil de forage pour réalisation de parois de tranchées

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP05014615.8 Division 2005-07-06
EP05014615A Division EP1614813A1 (fr) 2004-07-06 2005-07-06 Outil de forage pour réalisation de parois de tranchées

Publications (2)

Publication Number Publication Date
EP2098642A1 EP2098642A1 (fr) 2009-09-09
EP2098642B1 true EP2098642B1 (fr) 2012-06-13

Family

ID=35197932

Family Applications (2)

Application Number Title Priority Date Filing Date
EP05014615A Withdrawn EP1614813A1 (fr) 2004-07-06 2005-07-06 Outil de forage pour réalisation de parois de tranchées
EP09008797A Not-in-force EP2098642B1 (fr) 2004-07-06 2005-07-06 Équipement vissé pour creuser afin de construire des diaphragmes

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP05014615A Withdrawn EP1614813A1 (fr) 2004-07-06 2005-07-06 Outil de forage pour réalisation de parois de tranchées

Country Status (3)

Country Link
EP (2) EP1614813A1 (fr)
ES (1) ES2389677T3 (fr)
IT (1) ITTO20040458A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2477792B (en) * 2010-02-15 2012-02-15 Hesco Bastion Ltd Auger and method
ITMI20131529A1 (it) 2013-09-17 2015-03-18 Soilmec Spa Dispositivo per lo scavo di diaframmi
CN112252302A (zh) * 2020-10-10 2021-01-22 无锡市市政设施建设工程有限公司 基于bim实现地下连续墙异形幅钢筋笼分体吊装成槽的方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2965956D1 (en) * 1978-11-21 1983-08-25 Takenaka Komuten Co Earth auger
US5007770A (en) 1989-12-04 1991-04-16 Simmons Robert J Method and apparatus for constructing a subsurface retaining wall
GB2270329B (en) * 1992-08-10 1995-10-11 Cementation Piling & Found Formation of holes in the ground

Also Published As

Publication number Publication date
ES2389677T3 (es) 2012-10-30
EP1614813A1 (fr) 2006-01-11
EP2098642A1 (fr) 2009-09-09
ITTO20040458A1 (it) 2004-10-06

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