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CEN

EN 15237:2007

(Main)

Execution of special geotechnical works - Vertical drainage

Execution of special geotechnical works - Vertical drainage

This European Standard establishes general principles for the execution, testing, supervision and monitoring of vertical drain projects.
This European Standard includes the application of prefabricated vertical drains and sand drains and deals with requirements to be placed on design, drain material and installation methods. This European Standard applies to the improvement of low-permeability, highly compressible soils by vertical drainage and preloading. Information regarding loading (embankment, vacuum or ground water lowering) and preloading is given in informative Annexes A and B.
Vertical drainage is used both in on land and in marine constructions for the following purposes:
   (pre-)consolidation and reduction of post-construction settlements;
   speeding up the consolidation process by decreasing the path lengths for pore water dissipation;
   increase of stability (by increasing effective stresses in the soil);
   groundwater lowering;
   mitigation of liquefaction effects.
In each case there is an overall treatment of the soil (the volume of the drains is small in relation to the soil volume treated).
This European Standard does not include soil improvement by means of wells, gravel and stone columns, large-diameter geotextile enclosed columns or reinforcing elements.
Vertical drainage can also be combined with other foundation or ground improvement methods, e.g. electro osmosis, piles and compacted sand piles, dynamic compaction and deep mixing.
Guidance on practical aspects of vertical drainage, such as investigation of drain properties, execution procedures and equipment, is given in Annex A. Investigation of soil characteristics and assessment of design parameters, which are affected by drain properties and execution, are presented in Annex B.

Ausführung von besonderen geotechnischen Arbeiten (Spezialtiefbau) - Vertikaldräns

Diese Europäische Norm legt die allgemeinen Grundsätze für die Ausführung, Prüfung, Bauaufsicht und Überwachung von Projekten für Vertikaldräns fest.
Diese Europäische Norm umfasst die Anwendung vorgefertigter Vertikaldräns und Sanddräns und behandelt Anforderungen an Bemessung, Dränmaterialien sowie an Einbauverfahren. Diese Europäische Norm ist auf die Verbesserung schwach durchlässiger, stark komprimierbarer Böden durch Vertikaldränung und Vorbe¬lastung anwendbar. Informationen bezüglich der Belastung (Damm, Vakuum oder Grundwasserabsenkung) und der Vorbelastung sind in den informativen Anhängen A und B angegeben.
Die Vertikaldränung wird sowohl bei Bauwerken an Land als auch bei Meeres- bzw. Seebauwerken angewendet, wobei folgende Zwecke verfolgt werden:
   (Vor )Konsolidierung und Verringerung von Setzungen nach dem Errichten des Bauwerkes;
   Beschleunigen des Konsolidationsprozesses durch Verringerung der Pfadlängen für den Porenwasser¬abfluss;
   Erhöhung der Standsicherheit/Stabilität (durch Erhöhung der wirksamen Spannungen im Boden);
   Grundwasserabsenkung;
   Abschwächen von Verflüssigungswirkungen.
                In jedem Fall findet eine Gesamtbehandlung des Bodens statt (das Volumen der Dräns ist im Verhältnis zum behandelten Bodenvolumen gering).
Diese Europäische Norm behandelt nicht die Verbesserung des Bodens mit Hilfe von Brunnen, Kies  und Steinsäulen, geotextilumschlossenen Säulen mit großem Durchmesser oder Bewehrungselementen.
Die Vertikaldränung kann auch mit weiteren Gründungs  oder Bodenverbesserungsverfahren, wie z. B. Elektro Osmose, Pfähle und verdichtete Sandpfähle, Fallplattenverdichtung und tiefreichende Bodenstabili¬sierung, kombiniert werden.

Exécution des travaux géotechniques spéciaux - Drains verticaux

La présente Norme européenne établit les principes généraux pour l'exécution, les essais de contrôle, la surveillance et le suivi des travaux de réseaux de drains verticaux.
Cette Norme européenne couvre aussi bien les travaux réalisés avec des drains préfabriqués que ceux réalisés avec des drains de sable et elle traite des exigences pour la conception des travaux, les matériaux constitutifs des drains, et les méthodes de mise en place. La présente norme s’applique aux travaux d’amélioration des sols de faible perméabilité et fortement compressibles, par pré-chargement du terrain associé à un réseau de drains verticaux. Des indications relatives au chargement d’un terrain (avec un remblai, par consolidation atmosphérique ou par rabattement de la nappe) sont données dans les Annexes informatives A et B.
Les techniques d’amélioration des massifs de sol avec des réseaux de drains verticaux sont utilisées aussi bien pour les projets en site terrestre que pour les projets en conditions maritimes dans les buts suivants :
   (pré-)consolider un massif au droit d’un futur ouvrage pour réduire les tassements après sa construction ;
   accélérer le processus de consolidation d'un massif, c’est à dire le processus de dissipation des pressions interstitielles à l’intérieur de celui-ci, en réduisant le trajet d’écoulement des eaux ;
   améliorer la résistance d'un massif (en augmentant les contraintes effectives dans celui-ci) ;
   rabattre le niveau d'une nappe ;
   réduire le potentiel de liquéfaction d'un massif.
Pour toutes ces applications, un traitement d’ensemble du massif est réalisé (le volume des drains est faible par rapport au volume de sol traité).
La présente Norme européenne ne couvre pas l'amélioration des massifs de sol au moyen de puits, de colonnes ballastées, de colonnes de sable de grand diamètre dans une gaine géotextile ou d’inclusions rigides.

Izvedba posebnih geotehničnih del - Navpično odvodnjavanje

General Information

Status
Published
Publication Date
27-Feb-2007
Withdrawal Date
30-Aug-2007
ICS
93.020 - Earthworks. Excavations. Foundation construction. Underground works
Technical Committee
CEN/TC 288 - Execution of special geotechnical works
Drafting Committee
CEN/TC 288/WG 11 - Vertical drains
Current Stage
9093 - Decision to confirm - Review Enquiry
Completion Date
11-Mar-2024
Ref Project
SIST EN 15237:2007 - Execution of special geotechnical works - Vertical drainage

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Execution of special geotechnical works - Vertical drainageExécution des travaux géotechniques spéciaux - Drains verticauxAusführung von besonderen geotechnischen Arbeiten (Spezialtiefbau) - VertikaldränsTa slovenski standard je istoveten z:EN 15237:2007SIST EN 15237:2007en;fr;de93.020Zemeljska dela. Izkopavanja. Gradnja temeljev. Dela pod zemljoEarthworks. Excavations. Foundation construction. Underground worksICS:SLOVENSKI
STANDARDSIST EN 15237:200701-julij-2007

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 15237February 2007ICS 93.020 English VersionExecution of special geotechnical works - Vertical drainageExécution des travaux géotechniques spéciaux - DrainsverticauxAusführung von besonderen geotechnischen Arbeiten(Spezialtiefbau) - VertikaldränsThis European Standard was approved by CEN on 7 January 2007.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2007 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 15237:2007: E

Practical aspects of vertical drainage.20 Annex B (informative)
Aspects of design.41 Annex C (informative)
Degree of obligation of the specifications.52 Bibliography.54

1) The terms “wick drains” and “prefabricated vertical drains” (PVD) are also used.
...

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