oSIST prEN 1997-3:2022

Eurocode 7 - Geotechnical design - Part 3: Geotechnical structures

1.1   Scope of prEN 1997-3
(1)   This document provides specific rules to be applied for design and verification of geotechnical structures.
1.2   Assumptions
(1)   This document is intended to be used in conjunction with prEN 1990:2021, which establishes principles and requirements for the safety, serviceability, robustness, and durability of structures, including geotechnical structures, and other construction works.
(2)   This document is intended to be used in conjunction with prEN 1997-1:2022, which provides general rules for design and verification of geotechnical structures.
(3)   This document is intended to be used in conjunction with prEN 1997-2:2022, which gives provisions rules for determining ground properties from ground investigation.
(4)   This document is intended to be used in conjunction with the other Eurocodes for the design of geotechnical structures, including temporary geotechnical structures.

Eurocode 7 - Entwurf, Berechnung und Bemessung in der Geotechnik - Teil 3: Geotechnische Bauwerke

No scope available

Eurocode 7 - Calcul géotechnique - Partie 3 : Constructions géotechniques

1.1   Domaine d’application du document prEN 1997-3
(1)   Le présent document fournit des règles spécifiques à appliquer pour le calcul et la vérification des constructions géotechniques.
1.2   Hypothèses
(1)   Ce document est destiné à être utilisé conjointement avec le document prEN 1990:2021, qui définit les principes et les exigences en matière de sécurité, d'aptitude au service, de robustesse et de durabilité des constructions, y compris les constructions géotechniques et autres ouvrages de construction.
(2)   Ce document est destiné à être utilisé conjointement avec le document prEN 1997-1:2022, qui fournit des règles générales à appliquer pour le calcul et la vérification des constructions géotechniques.
(3)   Ce document est destiné à être utilisé conjointement avec le document prEN 1997-2:2022, qui fournit des dispositions réglementaires à appliquer pour déterminer les propriétés du sol à partir de reconnaissances de terrains.
(4)   Ce document est destiné à être utilisé conjointement avec les autres Eurocodes pour le calcul de constructions géotechniques, y compris temporaires.

Evrokod 7 - Geotehnično projektiranje - 3. del: Geotehnične konstrukcije

General Information

• Status: Not Published
• Public Enquiry End Date: 18-Dec-2022
• ICS: 91.010.30 - Technical aspects
• ICS: 93.020 - Earthworks. Excavations. Foundation construction. Underground works
• Technical Committee: KON - Structures
• Current Stage: 4020 - Public enquire (PE) (Adopted Project)
• Start Date: 23-Sep-2022
• Due Date: 10-Feb-2023
• Completion Date: 19-Dec-2022
• Mandate: M/515 - Mandate for amending existing Eurocodes and extending the scope of structural Eurocodes
• Ref Project: prEN 1997-3 - Eurocode 7: Geotechnical design - Part 3: Design assisted by field testing

Relations

• Revised: SIST EN 1997-1:2005 - Eurocode 7: Geotechnical design - Part 1: General rules
• Effective Date: 18-May-2022
• Revised: SIST EN 1997-1:2005 - Eurocode 7: Geotechnical design - Part 1: General rules
• Effective Date: 18-Jan-2023
• Merged Into: SIST EN 1997-2:2007 - Eurocode 7 - Geotechnical design - Part 2: Ground investigation and testing
• Effective Date: 08-Mar-2023
• Revised: SIST EN 1997-1:2005 - Eurocode 7: Geotechnical design - Part 1: General rules
• Effective Date: 19-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN 1997-3:2022
01-december-2022
Evrokod 7 - Geotehnično projektiranje - 3. del: Geotehnične konstrukcije
Eurocode 7 - Geotechnical design - Part 3: Geotechnical structures
Eurocode 7 - Entwurf, Berechnung und Bemessung in der Geotechnik - Teil 3:
Geotechnische Bauwerke
Eurocode 7 - Calcul géotechnique - Partie 3 : Constructions géotechniques
Ta slovenski standard je istoveten z: prEN 1997-3
ICS:
91.010.30 Tehnični vidiki Technical aspects
93.020 Zemeljska dela. Izkopavanja. Earthworks. Excavations.
Gradnja temeljev. Dela pod Foundation construction.
zemljo Underground works
oSIST prEN 1997-3:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 1997-3:2022

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oSIST prEN 1997-3:2022


DRAFT
EUROPEAN STANDARD
prEN 1997-3
NORME EUROPÉENNE

EUROPÄISCHE NORM

September 2022
ICS 91.010.30; 93.020 Will supersede EN 1997-1:2004
English Version

Eurocode 7 - Geotechnical design - Part 3: Geotechnical
structures
Eurocode 7 - Calcul géotechnique - Partie 3 : Eurocode 7 - Entwurf, Berechnung und Bemessung in
Constructions géotechniques der Geotechnik - Teil 3: Geotechnische Bauwerke
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 250.

If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.


EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 1997-3:2022 E
worldwide for CEN national Members.

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oSIST prEN 1997-3:2022
prEN 1997-3:2022 (E)
Contents Page
European foreword . 6
0 Introduction . 7
1 Scope .10
1.1 Scope of prEN 1997-3 .10
1.2 Assumptions .10
2 Normative references .10
3 Terms, definitions, and symbols .11
3.1 Terms and definitions .11
3.2 Symbols and abbreviations .24
4 Slopes, cuttings, and embankments .39
4.1 Scope and field of application .39
4.2 Basis of design .39
4.3 Materials .42
4.4 Groundwater .42
4.5 Geotechnical analysis .43
4.6 Ultimate limit states .46
4.7 Serviceability limit states .47
4.8 Implementation of design .48
4.9 Testing .49
4.10 Reporting .49
5 Spread foundations .49
5.1 Scope and field of application .49
5.2 Basis of design .50
5.3 Materials .54
5.4 Groundwater .54
5.5 Geotechnical analysis .55
5.6 Ultimate limit states .63
5.7 Serviceability limit states .69
5.8 Implementation of design .70
5.9 Testing .70
5.10 Reporting .71
6 Piled foundations .71
6.1 Scope and field of application .71
6.2 Basis of design .71
6.3 Materials .75
6.4 Groundwater .77
6.5 Geotechnical analysis .77
6.6 Ultimate limit states .87
6.7 Serviceability limit states .96
6.8 Implementation of design .97
6.9 Testing .99
6.10 Reporting . 102
7 Retaining structures . 102
7.1 Scope and field of application . 102
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prEN 1997-3:2022 (E)
7.2 Basis of design . 102
7.3 Materials . 105
7.4 Groundwater . 106
7.5 Geotechnical analysis . 106
7.6 Ultimate limit states . 111
7.7 Serviceability limit states . 116
7.8 Implementation of design. 117
7.9 Testing . 118
7.10 Reporting . 119
8 Anchors . 119
8.1 Scope and field of application . 119
8.2 Basis of design . 120
8.3 Materials . 122
8.4 Groundwater . 123
8.5 Geotechnical analysis . 123
8.6 Ultimate limit states . 123
8.7 Serviceability limit states . 126
8.8 Implementation of design. 128
8.9 Testing . 129
8.10 Reporting . 131
9 Reinforced fill structures . 131
9.1 Scope and field of application . 131
9.2 Basis of design . 132
9.3 Materials . 135
9.4 Groundwater . 141
9.5 Geotechnical analysis . 141
9.6 Ultimate limit states . 148
9.7 Serviceability limit states . 152
9.8 Implementation of design. 152
9.9 Testing . 153
9.10 Reporting . 153
10 Ground reinforcing elements . 154
10.1 Scope and field of application . 154
10.2 Basis of design . 154
10.3 Materials . 156
10.4 Groundwater . 158
10.5 Rock bolts and rock anchors . 158
10.6 Soil Nails . 162
10.7 Wire mesh . 167
10.8 Sprayed concrete . 170
10.9 Facing element . 171
10.10 Reporting . 173
11 Ground improvement. 173
11.1 Scope and field of application . 173
11.2 Basis of design . 174
11.3 Materials . 179
11.4 Groundwater . 182
11.5 Geotechnical analysis . 182
11.6 Ultimate limit states . 186
11.7 Serviceability limit states . 188
11.8 Implementation of design. 188
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oSIST prEN 1997-3:2022
prEN 1997-3:2022 (E)
11.9 Testing . 189
11.10 Reporting . 190
12 Groundwater control . 191
12.1 Scope and field of application . 191
12.2 Basis of design . 192
12.3 Material . 194
12.4 Groundwater . 194
12.5 Reduction of hydraulic conductivity . 194
12.6 Dewatering and infiltration. 196
12.7 Impermeable barriers . 198
12.8 Implementation of design . 199
12.9 Testing . 202
12.10 Reporting . 202
Annex A (informative) Slopes, cuttings, and embankments . 203
A.1 Use of this Informative Annex . 203
A.2 Scope and field of application . 203
A.3 Calculation models for analysing the stability of soil and fill . 203
A.4 Calculation models for analysing the stability of rock mass . 205
Annex B (informative) Spread foundations . 207
B.1 Use of this Informative Annex . 207
B.2 Scope and field of application . 207
B.3 Checklists . 207
B.4 Calculation model for bearing resistance using soil parameters . 208
B.5 Calculation model for bearing resistance on ground underlain by a weaker layer 210
B.6 Calculation model for bearing resistance from pressuremeter test results . 211
B.7 Calculation model for settlement evaluation based on adjusted elasticity method 214
B.8 Calculation model for settlement evaluation based on stress-strain method . 215
B.9 Calculation model for settlements without drainage . 215
B.10 Calculation model for settlements caused by consolidation . 215
B.11 Calculation model for time-settlement behaviour . 215
B.12 Calculation model for settlement evaluation using pressuremeter test results. 215
B.13 Calculation model for settlement evaluation using cone penetration test results . 217
B.14 Relative stiffness of a spread foundation and subgrade modulus. 218
B.15 Linear elastic spring stiffnesses of surface foundation . 219
Annex C (informative) Piled foundations . 221
C.1 Use of this Informative Annex . 221
C.2 Scope and field of application . 221
C.3 Examples of pile types . 221
C.4 Pile shaft resistance based on ground parameters. . 223
C.5 Pile base resistance based on ground parameters . 224
C.6 Axial pile resistance based on CPT profiles . 225
C.7 Axial pile resistance from PMT profiles . 229
C.8 Axial pile resistance based on empirical tables . 232
C.9 Downdrag due to vertical ground movements . 234
C.10 Pile groups subject to axial tension . 237
C.11 Calculation model for single pile settlement using load transfer functions . 238
C.12 Calculation model for single pile lateral displacement using load transfer functions
. 238
C.13 Buckling and second order effects . 243
C.14 Cyclic effects . 248
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Annex D (informative) Retaining structures . 250
D.1 Use of this Informative Annex . 250
D.2 Scope and field of application . 250
D.3 Calculation model to determine limit values of earth pressures on vertical walls . 250
D.4 Calculation model to determine at-rest values of earth pressure . 254
D.5 Earth pressures due to compaction . 255
D.6 Earth pressures caused by cyclic thermal movement for integral bridges . 257
D.7 Basal heave . 257
D.8 Limit equilibrium models . 260
D.9 Beam-on-spring models . 260
D.10 Calculation model to determine intermediate values of earth pressure . 261
D.11 Numerical continuum models . 262
D.12 Vertical wall stability . 263
D.13 Determination of the anchor length to prevent interaction between anchors and
retaining structures . 264
Annex E (informative) Anchors . 266
E.1 Use of this Informative Annex . 266
E.2 Scope and field of application . 266
E.3 Example for anchor design models . 266
E.4 Layout of anchors . 266
Annex F (informative) Reinforced fill structures . 270
F.1 Use of this Informative Annex . 270
F.2 Scope and field of application . 270
F.3 Calculation models for reinforced fill structures . 270
F.4 Calculation models for reinforced embankment bases . 274
F.5 Calculation models for load transfer platform over rigid inclusions . 276
F.6 Calculation models for embankments over voids . 278
F.7 Veneer reinforcement . 280
F.8 Durability, reduction factor for tensile strength. 281
F.9 Typical grades of steel used for soil reinforcement elements . 282
Annex G (informative) Ground improvement . 284
G.1 Use of this Informative Annex . 284
G.2 Scope and field of application . 284
G.3 Examples of ground improvement techniques . 284
G.4 Use of stress envelope to determine acceptable limit states . 288
Bibliography . 290

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oSIST prEN 1997-3:2022
prEN 1997-3:2022 (E)
European foreword
This document (prEN 1997-3:2022) has been prepared by Technical Committee CEN/TC 250 “Structural
Eurocodes”, the secretariat of which is held by BSI. CEN/TC 250 is responsible for all Structural
Eurocodes and has been assigned responsibility for structural and geotechnical design matters by CEN.
This document is currently submitted to the CEN Enquiry.
This document will partially supersede EN 1997-1:2004.
The first generation of EN Eurocodes was published between 2002 and 2
...