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COMPTES RENDUS DU DIXIEME CONFERENCE EUROPEENNE DE MECANIQUE DES SOLS ET DES TRAVAUX DE FONDATIONS l FLORENCE l 26-30 MAI1991
DEFORMATION DU SOL ET DEPLACEMENTS DES STRUCTURES
XCEMSTF
Rédacteur
ASSOCIAZIONE GEOTECNICA ITALIANA
VOLUME4 Séance d'ouverture l Rapport généra/ l Conférences sur invitation l Discussions l Séance
de cloture l Contributions italiennes l SIMSF Vice President pour I'Europe: Rapport 1991 l Divers
A.A. BALKEMA l ROTTERDAM l BROOKFIELD l 1994
.M-12Zo
PROCEEDINGS OFTHE TENTH EUROPEAN CONFERENCE ON SOl L MECHANICS ANO FOUNDATION ENGINEERING l FLORENCE l 26-30 MAY 1991
DEFORMATION OF SOILS ANO DISPLACEMENTS OF STRUCTURES
XECSMFE
Editor
ASSOCIAZIONE GEOTECNICA ITALIANA
VOLUME4 Opening session l Generai report l lnvited lectures l Discussions l Closing session l ltalian contributions l
JSSMFE Vice President for Europe: Report 1991 l Miscellaneous
A.A. BALKEMA l ROTTERDAM l BROOKFI ELD l 1994
1
2 R.Frank
3 K. H. Andersen K. H0eg
B. D'Elia
R. Dobry
G.T. Houlsby
Preface Préface
Contents Table des matières
Organization of the conference Organisation de la conférence
Sponsorships Parrainage
Geotechnical engineering exhibition L'exposition de l'inginiérie géotechnique
Conference programma Programme de la conférence
Photographic report Rapport photographique
Opening session Séance d'ouverture
Opening session Séance d'ouverture
Generai report Rapport général
Some recent developments on the behaviour of shallow foundations Quelques developpements récents sur le comportement des fondations superficielles
lnvited lectures Conférences sur invltation
Deformations of soils and displacements of structures subjected to combined static and cyclic loads Déformations des sols et déplacements des structures sujets aux chargements combinés statiques et cycliques
Deformation problems in the ltalian structurally complex clay soils
Soil properties and earthquake ground response Propriétés géotechniques et réponse des sols aux tremblements de terre
How the dilatancy of soils affects their behaviour De la manière doni la dilatance des sols influence leur comportement
v
Xlii
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XIX
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XXXI
1107
1115
1147
1159
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1189
VII
4 Discussions Discussions
Session l Séance 1 Experimental determination of soil properties (stress-strain-time) Détermination expérimentale des paramètres caractéristiques du sol ( contraintes-déformations-temps)
G. Baldi
Y. Tanaka
T. Edil
R.J. Jardine
K. Charif P.Y. Hicher
F. Tatsuoka
A. Pecker
D. Lo Presti
B.Simpson
J. S. Steenfelt
L. Trauner
L. Trauner
V. N. Ghionna M. Jamiolkowski
M. Manassero
R. Frank
R.J. Jardine
P. Carrubba M. Maugeri
1 a Laboratory testing Epreuves de laboratoire
Developments in laboratory testing
Deformation control and acoustic emission
Local measurements of interface strains
Local strain measuring techniques and their practical applications
lnfluence de l'anisotropie sur les propriétés élastiques d'un sable
Discussion on measurement of static deformation moduli in dynamic tests
Comparaison entre module statique et module dynamique sur un sable
Behaviour of sand at small strain
lnterpretation of test results to evaluate design parameters
Evaluation of test results for design
lnformation about quick process guided tests
A way of implementation of probability calculus in soil mechanics
1 b ln-situ testing Epreuves sur piace
lnfluence of ti me on the behaviour of granular soils
Assessment of the earth pressure at rest coefficient (K0 ) in sand deposits
Modules pressiométriques pour calculer les déplacements des fondations profondes
Non-linear interpretations of in-situ stiffness measurements
ln-situ and laboratory evaluation of initial shear modulus fora clay
Session l Séance 2 Modelling stress-strain-time behaviour of natural soils
J. Logar
J. Mecsi
H. M. Jacobsen
R. Dobry
D. Lo Presti
K. Yasohara
VIli
Relations contraintes-déformations-temps pour les sols naturels
2a Monotonic loading Charges monotoniques
Use of strain isotaches in the consolidation analysis
Stresses, displacements, volume changes around the expansion cyclinder in the soil- A condensed version with some additions to the lecture
2b Cyclic loading Charges cycliques
Behaviour of sand during earthquake or wave loading
Pore pressure development during cyclic shear loading
Threshold strain in soils
Drainage effect importance in cyclic behaviour of clay
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M. P. Luong
A.O. Uriel
K. Axelsson
C. Carrubba M. Maugeri
Energy dissipating capacity of soils 1289
Behaviour of a physical and conceptual model based on an extension of Masing's 1293 modelto2-D
Determination of constitutive parameters for soils based on optimization
Threshold strain limits of two natural clays
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1299
Session l Séance 3 Displacements and soil-structure interaction: Shallow and deep foundations Déplacements et interaction sol-structure: Fondations superficielles et profondes
3a Shallow foundations 1303 Fondations superficielles
S. Nordal A multy story building and its foundation mat 1307
1311
1316
G. Bouckovalas
D.Luger
L. Trauner
S. Amar
R.J. Jardine
V. Caputo
C. N. Baker, Jr.
E. Falk
M. Maugeri F. Castelli E. Motta
Ekofisk tank: Performance prediction during the storm of Nov. 6, 1973
Soil-water-structure interaction
About shallow hinge-tied foundation 1324
3b Deep foundations 1325 Fondations profondes
Prévision des déplacements verticaux et horizontaux des pieux à partir de l'essai 1325 pressiométrique Ménard
The effects of soil non-linearity and effective stress states on the 1334 load-displacement behaviour of piles and pile groups
Equivalent elastic analysis of settlement for piled foundations 1346
Discussion on piled rafts
Lifting of structures using soilfrac: Application of an active foundation method
Non-linear single pile settlements
1348
1349
1351
Sesslon l Séance 4 Displacements and soil-structure interaction: Earth retaining structures and deep excavations
G.Sembenelli
K. Kiein
K.C. Brady
M. Bastick
W Steiner
Déplacements et interaction sol-structure: Structures de soutènement et excavations profondes
4a Earth retaining structures Structures de soutien
Deformations and factor of safety in high reinforced soil structures
4b Underground retaining structures and deep excavations Fouilles et structures en souterrain
Horizontal deformations at 47 m deep bentonite-cement slurry diaphragm wall
Serviceability limit states for reinforced soil structures
Stresses and strains in a reinforced earth experimental abutment
Use of monitoring
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1383
IX
Session l Séance 5 Displacements and soil-structure interaction: Special problems (Earthquakes, subsidence, landslides, etc.)
T. B. Edil
J. D. Nieuwenhuis
M. Bastick
5
N. Janbu
6
Déplacements et interaction sol-structure: Problèmes spéciaux (Tremblements de terre, affaissements, éboulements, etc.)
Sa Static loading conditions Conditions statiques
Discussion of issues raised on creep
Remedial measures for shallow naturallandslides
Sb Dynamic loading conditions Conditions dynamiques
Seismic design of reinforced earth
Closing session Séance de cloture
Closing session Séance de clòture
Stress-strain-time behaviour of porous media: A case history based review Le comportement de contraintes-deformations-temps des milieux poreux: Une revue basée sur des cas pratiques
ltalian contributlons Contrlbutlons ltallennes
Associazione The Leaning Tower of Pisa- Present situation Geotecnica Italiana
P. Billi G. Losito M. Muschietti
T. Crespellani G. Vannucchi X.Zeng
A. Vignoli
R. Lugli
P. Billi
T. Crespellani A. Ghinelli C. Madiai G. Vannucchi
T. Crespellani G. Vannucchi
T. Crespellani C. Madiai
T. Crespellani G. Vannucchi A. Vignoli
x
Selsmic hazards and slte effects in the Florence area
1. Geologica! setting, tectonic evolution and related seismic activity
2. Seismic hazard analysis
3. Definition of the ground motion in f irm soil
4. Geographical setting, built-up milieu and urban development
5. Geology
6. Stratigraphical profiles and geotechnical properties
7. Dynamic properties of soils
8. Seismic response analysis
9. Uncertainties analysis and final remarks
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7
8
ISSMFE Vice President for Europe: Report 1991 SIMSF Vice president pour l'Europa: Rapport 1991
Miscellaneous Divers
List of delegates Liste des participants
lndex of authors lndex des auteurs
1535
1541
1565
Xl