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Statement    OCR for page 8 8 CHAPTER 1 INTRODUCTION AND
RESEARCH APPROACH PROBLEM STATEMENT developed by Tatsuoka and
his associates at the University of Tokyo. These GRS bridge-
supporting structures were Soil is generally weak in tension and
relatively strong in constructed in two stages. The first stage
involves con- compression and shear. The concept of reinforcing
a soil structing a wrapped-faced GRS wall with the aid of
gabions, mass by incorporating a material that is strong in
tensile and the second stage involves casting in-place a full-
height resistance is similar to that of reinforced concrete. The
rein- reinforced concrete facing over the wrapped face. Field
forcing mechanisms of reinforced soil and reinforced con-
measurement has shown that these structures experienced lit-
crete, however, are somewhat different. In reinforced soil, tle
deformation under service loads and have performe