EP0855472A1 - Procédé pour installer un écran d'étancheité dans le sol - Google Patents

Procédé pour installer un écran d'étancheité dans le sol Download PDF

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Publication number
EP0855472A1
EP0855472A1 EP98200213A EP98200213A EP0855472A1 EP 0855472 A1 EP0855472 A1 EP 0855472A1 EP 98200213 A EP98200213 A EP 98200213A EP 98200213 A EP98200213 A EP 98200213A EP 0855472 A1 EP0855472 A1 EP 0855472A1
Authority
EP
European Patent Office
Prior art keywords
signal
screen wall
sensor element
conversion
screen
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.)
Withdrawn
Application number
EP98200213A
Other languages
German (de)
English (en)
Inventor
Hendrik Spek
Peter Jan Lobbezoo
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.)
VAN SPLUNDER FUNDERINGSTECHNIEK BV
Original Assignee
VAN SPLUNDER FUNDERINGSTECHNIEK BV
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
Application filed by VAN SPLUNDER FUNDERINGSTECHNIEK BV filed Critical VAN SPLUNDER FUNDERINGSTECHNIEK BV
Publication of EP0855472A1 publication Critical patent/EP0855472A1/fr
Withdrawn legal-status Critical Current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
    • E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
    • E02D13/06—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers for observation while placing

Definitions

  • a screen wall 10 in the floor As shown schematically is shown in the view of Figure 2, for Example of prefabricated screen wall elements in sequence let down into the floor 11, one each following Screen wall element 3 with its longitudinal edge 4 in the longitudinal edge 2 of the previous one, already embedded in the floor, on it subsequent screen wall element 1 engages; first only with its lower end, and with increasing introduction into the ground in the direction of the arrow over an ever larger one Length.
  • a screen wall is, for example, many meters deep and, for example, connects to one with its lower edge waterproof layer, for example a natural one Clay layer.
  • a screen wall element is preferably on both Long sides with profiling for mutual intervention equipped and, for example, resistant to bending, such as one steel sheet piling, or bendable, like one Foil.
  • a screen wall is preferably made of one or more Groups of uniform screen wall elements built, the for example rammed into the ground, shaken or pressed will.
  • a combination wall is made of vertical tubular and sheet metal parts built.
  • the sensor means include Solenoid.
  • That the signal led over a wire to the surface of the earth has a number of disadvantages, such as: protecting the This wire must be fastened to the sheet piling plate Steel pipe are performed, which is insufficient Protection from melting by frictional heat during in particular of the vibrating process, so that the wire is still there has to be packed in, for example, an artificial foam, whereby the wires have to be laid in the workshop. Also through the above disadvantages is the application of a Sensor means relatively expensive, if not impossible.
  • a purpose of the invention is to use sensor means to make it cheaper. Another purpose is that To make application of sensor means more reliable. A Another purpose is to recover sensor media enable or make it more reliable. A another purpose is the need to connect and / or the disassembly of valuable wiring do.
  • the invention realizes at least one of the purposes of the signals of the sensor means wirelessly to the Bring the surface of the earth, for which the signals are preferred first converted into a signal to be transmitted by transmission means will.
  • a wave signal is preferred an ultrasound signal is sent to the earth's surface, although electromagnetic waves, like radar waves, are usable.
  • the signal can be electrical Include current or voltage pulses, for example if the Soil has sufficient galvanic conductivity.
  • the floor can be the screen wall element as a conduction medium be used.
  • the signal to be transmitted wirelessly preferably with a local one, for example with a battery or Battery powered transmitter generated.
  • the transmitter can also be Take energy from the environment, for example when the sensor reacted to a potential field.
  • the sensor like a solenoid, is also preferably powered locally, preferably with the same energy source as that of the transmitter.
  • the Sensor means and the sending means can be an integral part be mounted on the screen wall element.
  • the sensor means can for example be a magnetic switch or comprise a solenoid or one on a potential field based sensor, for example around the longitudinal edge of the a screen wall element a potential field of suitable Averaging is generated while the potential field sensor on the cooperating longitudinal edge of the other screen wall element is fixed and detects deviations in the potential field, which can be an indication that the longitudinal edges are not correctly interlock.
  • Another alternative sensor means is for example a power wire that is broken as in NL-A-7908262, so that a circuit is interrupted whereby the transmitter sends a signal. It goes without saying that the remote receiver on the Transmitter can be tuned.
  • the transmitter can be of the type be in which two types of pulse are emitted; the one Pulse type, which indicates that the profiles interlock well, while the other indicates that the opposite is the case.
  • Figure 1 shows two interlocking edge profiles of Screen wall elements in top view.
  • Element 1 is already there inserted in the ground and has a profile 2; element 3 is introduced and has a profile 4.
  • 5 is a protective strip to 1, which can be omitted if necessary.
  • 6 is a Proximity switch and transmitter about 50 cm from the lower edge of the element 3, and is with threaded connector 9 in the threaded hole 7 is screwed in and has on its underside a shield plate 8.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Geophysics And Detection Of Objects (AREA)
EP98200213A 1997-01-24 1998-01-26 Procédé pour installer un écran d'étancheité dans le sol Withdrawn EP0855472A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1005083 1997-01-24
NL1005083 1997-01-24

Publications (1)

Publication Number Publication Date
EP0855472A1 true EP0855472A1 (fr) 1998-07-29

Family

ID=19764272

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98200213A Withdrawn EP0855472A1 (fr) 1997-01-24 1998-01-26 Procédé pour installer un écran d'étancheité dans le sol

Country Status (1)

Country Link
EP (1) EP0855472A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7908262A (nl) 1979-11-12 1981-06-01 Hollandsche Betongroep Nv Werkwijze voor het in de grond heien van damplanken en het afdichten van de damwand alsmede inrichting voor het toepassen van de werkwijze.
NL8603243A (nl) * 1986-12-19 1988-07-18 Hattum & Blankevoort Bv Werkwijze voor het controleren van de positie van een damwandplank alsmede damwandplank voor het uitvoeren van de werkwijze.
FR2646188A1 (fr) * 1989-04-24 1990-10-26 Soletanche Procede de controle de l'enclenchement de membranes d'etancheite et membranes d'etancheite pour la mise en oeuvre de ce procede
EP0431710A1 (fr) * 1989-12-08 1991-06-12 Hollandsche Beton Groep N.V. Système de signalisation de raccordement

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7908262A (nl) 1979-11-12 1981-06-01 Hollandsche Betongroep Nv Werkwijze voor het in de grond heien van damplanken en het afdichten van de damwand alsmede inrichting voor het toepassen van de werkwijze.
NL8603243A (nl) * 1986-12-19 1988-07-18 Hattum & Blankevoort Bv Werkwijze voor het controleren van de positie van een damwandplank alsmede damwandplank voor het uitvoeren van de werkwijze.
NL191614B (nl) 1986-12-19 1995-07-03 Hattum & Blankevoort Bv Werkwijze voor het controleren van de plaatsing van damplanken bij het in de grond aanbrengen van een damwand en damplank voor het uitvoeren van de werkwijze.
FR2646188A1 (fr) * 1989-04-24 1990-10-26 Soletanche Procede de controle de l'enclenchement de membranes d'etancheite et membranes d'etancheite pour la mise en oeuvre de ce procede
EP0431710A1 (fr) * 1989-12-08 1991-06-12 Hollandsche Beton Groep N.V. Système de signalisation de raccordement

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