عنوان : Recent Developments of Soil Mechanics and Geotechnics in Theory and Practice
نویسنده : Theodoros Triantafyllidis
از : Lecture Notes in Applied and Computational Mechanics 91
انتشار : Springer International Publishing, Year: 2020
شابک (ISBN ) : ۹۷۸-۳-۰۳۰-۲۸۵۱۵-۹,۹۷۸-۳-۰۳۰-۲۸۵۱۶-۶
تعداد صفحات : ۴۱۰
فرمت : PDF
This book provides essential insights into recent developments in fundamental geotechnical
engineering research. Special emphasis is given to a new family of constitutive soil description methods, which take into account the recent loading history and the dilatancy effects. Particular attention is also paid to the numerical implementation of multi-phase material under dynamic loads, and to geotechnical installation processes. In turn, the book addresses implementation problems concerning large deformations in soils during piling operations or densification processes, and discusses the limitations of the respective methods. Numerical simulations of dynamic consolidation processes are presented in slope stability analysis under seismic excitation. Lastly, achieving the energy transition from conventional to renewable sources will call for geotechnical expertise. Consequently, the book explores and analyzes a selection of interesting problems involving the stability and serviceability of supporting structures, and provides new solutions approaches for practitioners and scientists in geotechnical engineering. The content reflects the outcomes of the Colloquium on Geotechnical Engineering 2019 (Geotechnik Kolloquium), held in Karlsruhe, Germany in September 2019.
This paper examines the influence of dilatant processes that can occur at a discontinuity of finite dimensions located at a compressed elastic geological interface, due to relative shear movement in the plane of the discontinuity. The dilatant phenomena will result in displacements in a direction normal to the shear movement and these displacements will be influenced by the elasticity of the geological materials and the compression at the interface. The dilatant displacements will also create a zone where there is loss of contact at the unilaterally constrained interface. The resulting problem is examined by appeal to results of the mathematical theory of elasticity. The influence of dilatant processes on the development of shear at the elastically constrained interface is examined by considering the procedures proposed by D.W. Taylor to analyze dilatant phenomena. The mathematical developments illustrate the combined influence of elastic constraints and interface compression on the amplification of the shear stress generated at the finite region. In the absence of dilatancy, the developments reduce to the classical result involving only Coulomb friction.