RESEARCH CONTENTS
Koyama Lab
◆RESEARCH FIELD
Geotechnical Engineering
Simple strength survey embankment of reservoirs
There
are about 170,000 reservoirs in Japan . Since many reservoirs were built before
the Taisho era , there are many cases where embankment soil of reservoirs is
unknown , and there is a high possibility that the soil is unsuitable for
embankment soil . Furthermore , it has been pointed out that degree of
compaction of the old reservoirs is low and soil of reservoirs is heterogeneity
. Recently，a lot of reservoirs damaged due to an
earthquake and heavy rain. They kill and injure people due to collapse.
Therefore , quick survey of embankment of reservoirs is needed. In this study ,
we aim at simple survey of embankment of reservoirs from strength estimation.
Study on simple survey of reservoirs
In the
current survey of reservoirs , we need undisturbed sample for survey of
strength of embankment.
Renewal technology of the deteriorated bridge using polyurethane lightweight embankment method
Maintenance of deteriorated bridges is an issue due to shortage of technicians and expensive maintenance cost in recent years. This study aims to establish the renewal method of deteriorated bridge that applies light weight embankment method using polyurethane.
Study on applicability of renewal technology of the deteriorated bridge using polyurethane lightweight embankment method
In this study,3FEM
analysis is conducted to examine the internal stress condition of updated light
weight embankment containing a bridge pier.