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Slice Method for Earth Pressure Analysis and Its
Application to Light-Weight Fill
Takashi Tsuchida, Yoshiaki Kikuchi, Kazuhiro Yamamura,
Kunio Funada and Takeo Wako
ABSTRACT : The increase of
earthquake-resistant capacity of existing port and harbor structures is
one of the major projects of Japanese seaports. In the design of
quay-wall structure, the earth pressure at earthquake time is calculated
by Mononobe-Okabe's equation, which is based on the seismic coefficient
method. However, Mononobe-Okabe equation is not applicable to the ground
with complicated formations, and it is making a difficulty to use the
light-weight treated soils as back-filling for the purpose of the earth
pressure reduction. In this study, a slice method for earth pressure
analysis is newly developed. According to a series of the shaking table
model tests, the effectiveness of the slice method was supported. The
reduction of the earth pressure due to the use of the light weight
treated soil is calculated by the slice method for the typical quay-wall
structures. The approximate relationship is shown on the normalized area
of light-weight treated soil and the earth-pressure reduction ratio.Key words: coefficient
of seismicity, earth pressure, light-weight soil, quay wall, seismic
earth pressure (IGC: D5)
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