Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 14 of 14 for “"layered soils"”.
-
Dynamic response of structures in layered soils.
Thesis: Sc. D., Massachusetts Institute of Technology, Department of Civil Engineering, 1974
-
Effective Green and Ampt parameters for two layered soils
… therefore it is difficult to apply to layered soils. In this paper, simple procedures for applying Green-Ampt method to layered soils are examined both under steady and unsteady rain. For a given design storm, the maximum saturated depth of the top layer can be estimated. Because the …
-
Seismic Response of Pile Foundations in Soft Clays and Layered Soils
… that pile foundations in soft clays and layered soils with significant stiffness contrast have also undergone severe damage during earthquakes. In this research, three different series of centrifuge experiments were performed to investigate the dynamic behaviour of soft clays, two-layered …
-
Three-Dimensional Simulations of the Behaviour of Layered Soils under Simple Shear
This thesis explores the behavior of uniform and layered soils under simple shear using 3D numerical analyses, focusing on the influence of a thin clay layer within sandy soils on strength and liquefaction resistance. Comparison of 2D and 3D simulations of direct simple shear (DSS) tests highlights …
-
The Development of Shaft Friction and End Bearing for Piles in Homogeneous and Layered Soils
… the sand were recorded. In the case of the layered soil profile the shear and vertical effective stresses generated on the sand/clay interface were monitored.<br/><br/>Data from both the pile and soil instrumentation was recorded throughout pile installation and load testing, consisting of …
-
The development of shaft friction in semi-fullscale piles passing through granular soils
… of literature pertaining to pile behaviour in layered soils was limited.<br/><br/>A model pilot study showed that the most efficient means of eliminating end bearing, while simulating an underlying clay stratum, was by driving the base of the pile into a frictionless cylinder.<br/><br/>The …
-
Solute transport in layered and heterogeneous soils
… of transport of dissolved chemicals in soils and aquifers is important to evaluate and remediate contaminated soils and aquifers. Because of the nature of heterogeneity of field porous media, studies on transport processes in non-homogeneous media are necessary. In this study, transport …
-
Moisture distribution in soil irrigated with a line source subsurface trickle irrigation system
… system was studied on bare and cropped layered soils. The soil type was an Uchee loamy sand. The Continuous System Modeling Program (CSMP) Model was used to simulate the soil moisture distribution resulting from the linesource. The model was modified and developed in FORTRAN programming …
-
Analysis of soil penetrometer using Eulerian finite element method
… Element (EFE) method for modeling penetration in soils. The formulation decouples material and nodal points displacements such that soil flows through a fixed finite element mesh. This approach eliminates problems of mesh distortion associated with conventional Lagrangian formulations but requires …
-
Wave motion in finite and infinite media using the Thin-Layer Method
… media, e.g. dynamic response of foundations over layered soils, there remain many unexplored aspects. These include a thorough evaluation of the TLM's accuracy and range of applicability as well as its extension to semi-infinite and infinite media. Based on these considerations, we have three main …
-
Data-Driven Risk Assessment of Bridges Subject to Corrosion and Scour
… soil stress history, scour hole dimensions, and layered soils effects 4. Investigation of the influence of measured non-uniform scour on bridge responses 5. Fragility assessment of bridges utilizing both scour and corrosion inspection data 6. Methodology to increase the numerical robustness and …
-
Seismic behaviour of shallow foundations on layered liquefiable soils
… foundations resting on saturated sandy/silty<br/>soils has been repeatedly observed throughout the world as a consequence of<br/>liquefaction or softening of the foundation soil. Such settlements and tilts can<br/>render structures unusable, and homes uninhabitable, causing significant economic …