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Soil Mechanics
Published in Dexter Perkins, Kevin R. Henke, Adam C. Simon, Lance D. Yarbrough, Earth Materials, 2019
Dexter Perkins, Kevin R. Henke, Adam C. Simon, Lance D. Yarbrough
According to Terzaghi et al. (1996):Soil mechanics is the application of laws of mechanics and hydraulics to engineering problems dealing with sediments and other unconsolidated accumulations of solid particles produced by the mechanical and chemical disintegration of rocks regardless of whether or not they contain an admixture of organic constituent.Soil mechanics is the part of engineering mechanics that deals with soils. It differs from solid mechanics and fluid mechanics because soils are generally much more heterogeneous than fluids or solids.
Soil aggregate, plasticity, and classification
Published in Braja M. Das, Advanced Soil Mechanics, 2019
Soils are aggregates of mineral particles; and together with air and/or water in the void spaces, they form three-phase systems. A large portion of the earth's surface is covered by soils, and they are widely used as construction and foundation materials. Soil mechanics is the branch of engineering that deals with the engineering properties of soils and their behavior under stress.
Force-System Resultants and Equilibrium
Published in Richard C. Dorf, The Engineering Handbook, 2018
Soil mechanics is the branch of science that deals with the study of the physical properties of soil and the behavior of soil masses while being subjected to various types of forces. Soils engineering is the application of the principles of soil mechanics to practical problems.
Mechanisms of settlement of a rubble mound breakwater on a soft soil in tidal flats
Published in Marine Georesources & Geotechnology, 2020
Hamed Bayesteh, Roham Mansouriboroujeni
The advantages associated with the use of geosynthetics for separation and reinforcement of rubble mound breakwaters are presented in this section to provide insight about possible settlement mechanisms. In classic soil mechanics, the settlement of a foundation can be divided into rapid settlement due to elastic deformation and time-dependent settlement due to consolidation. The classic theory of elasticity and Terzaghi’s consolidation theory have been used to quantify these types of settlement (Das 2009). These theories are based on continuum mechanics (Davis and Selvadurai 1996); thus, settlement can be modeled using finite element analysis and calculated using a classic analytical solution. The particles in the rockfill media, such as a rubble mound breakwater, are by nature a discontinuum (Bobet et al. 2009). The particles submerge individually into the seabed during construction. The mechanism of particle submersion is schematically illustrated in Figure 1(a,b). Continuum mechanics has no formula for calculating the settlement of rubble mound breakwaters caused by particle submersion into soft soil (Mobarrez, Ahmadi-Tafri, and Fakher 2004). Therefore, a suitable construction method must be used to prevent the particles from submerging into the seabed during breakwater construction. Layers of geosynthetic grids can serve as reinforcing material and can accelerate the process of consolidation of a soft subgrade for the purpose of temporarily increasing the safety factor of the embankment. This allows a faster rate of construction and the use of steeper slopes than would be possible in the absence of reinforcement (Shukla 2002; Das 2009).