LIQUEFACTION DAMAGE ANALYSIS OF RESIDENTIAL LANDS AT HIGH EMBANKMENT IN THE 2004 NIIGATA-KEN CHUETSU EARTHQUAKE

Abstract

Residential lands at a high embankment was liquefied and serious damage to the houses was occurred in Nagaoka City during the 2004 Niigata-ken Chuetsu Earthquake. The study is focusing on liquefaction at a high embankment. SPT blow count test, Sweden type sounding, soil test and observation of underground water level were conducted in order to clarify the characteristics of subsurface ground and stratum constitution. The mechanism of liquefaction of subsurface ground at a high embankment is investigated by using these data.