Soil Liquefaction (inbunden)
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Format
Inbunden (Hardback)
Språk
Engelska
Antal sidor
712
Utgivningsdatum
2015-09-21
Upplaga
2 New edition
Förlag
Apple Academic Press Inc.
Illustratör/Fotograf
N, black and white 386 Illustrations A 80 Tables black and white
Illustrationer
N/A; 80 Tables, black and white; 386 Illustrations, black and white
Dimensioner
254 x 184 x 44 mm
Vikt
1542 g
Antal komponenter
1
ISBN
9781482213683
Soil Liquefaction (inbunden)

Soil Liquefaction

A Critical State Approach, Second Edition

Inbunden Engelska, 2015-09-21
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A Rigorous and Definitive Guide to Soil Liquefaction Soil liquefaction occurs when soil loses much of its strength or stiffness for a time-usually a few minutes or less-and which may then cause structural failure, financial loss, and even death. It can occur during earthquakes, from static loading, or even from traffic-induced vibration. It occurs worldwide and affects soils ranging from gravels to silts. From Basic Physical Principles to Engineering Practice Soil Liquefaction has become widely cited. It is built on the principle that liquefaction can, and must, be understood from mechanics. This second edition is developed from this premise in three respects: with the inclusion of silts and sandy silts commonly encountered as mine tailings, by an extensive treatment of cyclic mobility and the cyclic simple shear test, and through coverage from the "element" scale seen in laboratory testing to the evaluation of "boundary value problems" of civil and mining engineering. As a mechanics-based approach is necessarily numerical, detailed derivations are provided for downloadable open-code software (in both Excel/VBA and C++) including code verifications and validations. The "how-to-use" aspects have been expanded as a result of many conversations with other engineers, and these now cover the derivation of soil properties from laboratory testing through to assessing the in situ state by processing the results of cone penetration testing. Downloadable software is supplied on www.crcpress.com/product/isbn/9781482213683 Includes derivations in detail so that the origin of the equations is apparent Provides samples of source code so that the reader can see how complex-looking differentials actually have pretty simple form Offers a computable constitutive model in accordance with established plasticity theory Contains case histories of liquefaction Makes available downloads and source data on the CRC Press website Soil Liquefaction: A Critical State Approach, Second Edition continues to cater to a wide range of readers, from graduate students through to engineering practice.
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Mike Jefferies is a registered professional engineer (AB, BC: Canada). Graduating in civil engineering from King's College in London, his interest in theoretical soil mechanics led to a MSc from Imperial College. Shortly thereafter Mike immigrated to Canada, joining Golder Associates in 1978 and with whom he has worked worldwide. In 2009 independence beckoned and Mike now splits his work between pursuing advances in geomechanics and the more usual diet of a review consultant across a range of dam, mining, and offshore projects. Ken Been obtained his engineering education at the University of Cape Town in South Africa before going on to do his D.Phil in soil mechanics at the University of Oxford as a Rhodes Scholar. Since 1981 he has worked for Golder Associates in Canada, the U.K., Germany, and the USA, providing geotechnical engineering consulting to the oil and gas, mining, and civil infrastructure industry worldwide from the equator to the Arctic. He is a chartered engineer in the UK and a registered professional engineer in several Canadian provinces.

Innehållsförteckning

Introduction What is this book about? Why a critical-state view? Experience of liquefaction Outline of the development of ideas Dilatancy and the state parameter Framework for soil behaviour State parameter approach Evaluating soil behaviour with the state parameter Determining the critical state Uniqueness of the CSL Soil properties Plane strain tests for soil behaviour General soil behaviour from triaxial properties Constitutive modelling for liquefaction Introduction Historical background Representing the critical state Cambridge view State parameter view NorSand constitutive model Comparison of NorSand to experimental data Commentary on aspects of NorSand Determining state parameter in situ Introduction SPT versus CPT Inverse problem: A simple framework Calibration chambers Stress normalization Determining I from CPT Moving from calibration chambers to real sands Elasticity in situ Horizontal geostatic stress Alternative in situ tests to the CPT Commentary on state determination using the CPT Soil variability and characteristic states Introduction Effect of loose pockets on performance Effect of variability of in situ state on cyclic performance Nerlerk case history Assessing the characteristic state of sands Summary Static liquefaction and post-liquefaction strength Introduction Data from laboratory experiments Trends in laboratory data for su and sr Nature of static liquefaction Undrained NorSand Understanding from NorSand Plane strain versus triaxial conditions Steady-state approach to liquefaction Trends from full-scale experience Lower San Fernando Dam revisited How dense is dense enough? Post-liquefaction residual strength Liquefaction assessment for silts Summary Cyclic stress-induced liquefaction (cyclic mobility and softening) Introduction Experimental data Trends in cyclic simple shear behaviour Berkeley school approach State parameter view of the Berkeley approach Theoretical framework for cyclic loading Dealing with soil fabric in situ Summary Finite element modelling of soil liquefaction Introduction Open-source finite element software Software verification Slope liquefaction Commentary Practical implementation of critical state approach Overview Scope of field investigations and laboratory testing Deriving soil properties from laboratory tests Laboratory measurement of cyclic strength Determining soil state by CPT soundings Application to typical problems in sands and silts Concluding remarks Model uncertainty and soil variability State as a geological principle In situ state determination Laboratory strength tests on undisturbed samples Soil plasticity and fabric Relationship to current practice What next? Do download ! A: Stress and strain measures B: Laboratory testing to determine the critical state of sands C: NorSand derivations D: Numerical implementation of NorSand E: Calibration chamber test data F: Some case histories involving liquefaction flow failure G: Seismic liquefaction case histories H: CamClay as a special case of NorSand References