土的工程绪论土的工程 (27).pdf

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1、Soil MechanicsSoil MechanicsChapter 1:Basic characteristics and engineering classification of soilsSoil Mechanics-chapter1Outline of Chapter 1IntroductionSoil generationSoil composition and phase relationshipsParticle size analysisDensity properties for granular soilsPlasticity properties of soilsSo

2、il compactionEngineering classification of soilsVoid ratio,eSoil Mechanics-chapter11.6 Density properties for granular soilsSoil typesDensityDenseMedium denseLess denseLooseGravel,Coarse,Medium sands e 0.60.6 e 0.750.750.85Fine sands,silte 0.70.7 e 0.850.85 e 0.95e 0.95Division of compactness of san

3、dy soils in terms of void ratioSoil Mechanics-chapter1Relative Density,DrLooseMedium denseDenserDeeeemaxmaxminSoil Mechanics-chapter1Standard penetration testAccording to Code for Design of Building Foundation(GB 50007-2011,China),Standard penetrate test can be used to evaluate the compactness of soil.Obviously,the larger value of blow count Nis,the tighter the soil becomes.Relative DensityDenseMedium denseLess denseLoosePenetration resistance N30N15N 3010N 15N 0Soil MechanicsStatement:Thanks for some pictures and materials fromthe Internet used in this courseware only for teaching.