标准规范下载简介和预览
Fundamentals of Geotechnical Engineering《FundamentalsofGeotechnicalEngineering》（《岩土工程基础》）是一本广泛用于土木工程专业本科生和研究生教学的经典教材，主要作者包括BrajaM.Das等知名岩土工程学者。该书系统地介绍了岩土工程的基本理论、分析方法和实际应用，涵盖了土力学、地基设计、基础工程等多个核心内容。
该教材注重理论与实践的结合，配有大量例题、图表和课后习题，便于学生巩固所学内容。此外，书中还介绍了现代岩土工程中常用的勘察技术与数值分析方法，使读者能够了解行业发展的最新动态。
总体而言，《FundamentalsofGeotechnicalEngineering》语言通俗易懂，逻辑严谨，适合作为岩土工程及相关专业的入门教材长条、拼花硬木地板施工工艺技术交底及安全交底，也是一本值得工程师参考的实用手册。
In dryclay,thenegativechargeisbalancedbyexchangeablecations,likeCa Mg++,Na*,and K+,surrounding the particles being held by electrostatic attraction, When water is added to clay, these cations and a small number of anions float around the clay particles.This is referred to as diffuse double layer (Figure 2.9a).The cation concentration decreases with distance from the surface of the particle (Figure 2.9b).
2.11SpecificGravity(G)
Figure2.9Diffusedoublelaye
Specific Gravity(Gs)
Table2.2Specificgravity ofimportantminer
MechanicalAnalysisofSoi
SieveAnalysis
Table 2.3US. standard sieve sizes
2.12MechanicalAnalysisofSoil
2.Determine the total mass of the soil:M,+M2+...+M;+...+Mn+ M=EM. 3。 Determine the cumulativemass of soilretained aboveeachsieve.For theith sieve,it is M,+M2+...+M;(Figure 2.11c).
2.Determine the total mass of the soil:M,+M2+...+M;+...+Mn+ M=EM. 3。 Determine the cumulativemass of soilretained aboveeachsieve.For theith sieve,it is M+M+·..+ M; (Figure 2.11c).
Figure2.11Sieveanalysis
2.12MechanicalAnalysisofSoil
HydrometerAnalysis
Hydrometer analysisisbasedon theprincipleofsedimentationofsoilgrainsinwater. When a soil specimen is dispersed inwater,theparticlessettle atdifferentvelocities depending on their shape, size, and weight. For simplicity, it is assumed that all the soil particles are spheres,and the velocity of soil particles can be expressed by Stokes law,accordingtowhich
=viscosity ofwater D = diameter of soil particles Thus, from Eq. (2.1),
=viscosityofwater D = diameter of soil particles Thus, from Eq. (2.1),
distance L where v= time 1 Note that
30m L ately equal to 1 g/cm?, we have
L (cm) D(mm)= K V t (min)
Table 2.4 Variation of K with G.
2.12MechanicalAnalysisofSoil
Figure2.13 Definition of Lin hydrometer test
Table2.5(continued)
Table2.5(continued
2.12MechanicalAnalysisofSoil
EffectiveSize,UniformityCoefficient,andCoefficient
郑州市新型工业用地规划管理技术规定(试行)（郑自然资文[2021]267号 郑州市自然资源和规划局2021年5月6日）1. Effective size 2. Uniformity coefficient 3.Coefficient of gradation
Thecoefficientofgradationmaybeexpre
D20 Cc D60 × D10
2.13EffectiveSize,UniformityCoefficient，andCoefficientofGradatior
Example 2.1
Example 2.2
104国道黄岩城区东复线工程施工组织设计Example2.3
llowing are the results of a sieve analysis:
Massofsoilretained U.S.sieve No. oneachsieve(g)