Seismic stability of geosynthetic-reinforced walls with variable excitation and soil properties: A discretization-based kinematic analysis

2018 ◽  
Vol 102 ◽  
pp. 196-205 ◽  
Author(s):  
Changbing Qin ◽  
Siau Chen Chian
Author(s):  
Miguel P. Romo ◽  
Manuel J. Mendoza ◽  
Silvia R. Garcia

This paper revises the factors that influence the behavior of foundations in seismic environments. It discusses aspects related with seismic load definition, dynamic soil properties, field and laboratory testing equipment, geoseismic instrumentation of prototypes, foundation seismic stability, use of artificial intelligence, among others. It also points out areas where more research is needed to better our knowledge on the physics of the problem and to improve experimental and numerical techniques, with the purpose of making more reliable and less costly foundation systems.


Author(s):  
F. Tatsuoka ◽  
T. Tanaka ◽  
K. Ueno ◽  
A. Duttine ◽  
Y. Mohri

Author(s):  
L. -M. Peng ◽  
M. J. Whelan

In recent years there has been a trend in the structure determination of reconstructed surfaces to use high energy electron diffraction techniques, and to employ a kinematic approximation in analyzing the intensities of surface superlattice reflections. Experimentally this is motivated by the great success of the determination of the dimer adatom stacking fault (DAS) structure of the Si(111) 7 × 7 reconstructed surface.While in the case of transmission electron diffraction (TED) the validity of the kinematic approximation has been examined by using multislice calculations for Si and certain incident beam directions, far less has been done in the reflection high energy electron diffraction (RHEED) case. In this paper we aim to provide a thorough Bloch wave analysis of the various diffraction processes involved, and to set criteria on the validity for the kinematic analysis of the intensities of the surface superlattice reflections.The validity of the kinematic analysis, being common to both the TED and RHEED case, relies primarily on two underlying observations, namely (l)the surface superlattice scattering in the selvedge is kinematically dominating, and (2)the superlattice diffracted beams are uncoupled from the fundamental diffracted beams within the bulk.


2008 ◽  
Author(s):  
Connie E. Myerson ◽  
Eniko K. Toth ◽  
Joseph M. Wasserman ◽  
W.D. Dietrich ◽  
Edward J. Green

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