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Dynamic soil pressures on embedded walls
Parikh, Vimal H.
Veletsos, Anestis S.
Master of Science
A comprehensive study is made of the response to horizontal base shaking of a uniform viscoelastic soil stratum retained by two vertical rigid walls. The system is assumed to experience a space-invariant horizontal motion along its base. Both harmonic and earth-quake ground motions are considered. The study is motivated by the need for a simple method of analysis and numerical data which may be used reliably and cost effectively in the design of such structures. A simple, approximate method of analysis is employed and its accuracy assessed by comparing its predictions with those obtained by a more nearly exact method. The study is presented in two parts. In the first part, the walls are assumed to be fixed at the base, whereas in second part, they are considered to be elastically constrained against rotation. The response quantities examined include the dynamic wall pressures and the associated forces and moments. Comprehensive numerical data are presented which elucidate the effects and relative importance of the numerous parameters involved. The results presented provide a convenient framework for the analysis of more complex soil-wall systems as well.
Civil engineering; Geotechnology