Journal of Natural Disaster Science

ON DAMAGES TO HOUSING SITES BY THE OFF-MIYAGI EARTHQUAKE OF JUNE 12, 1978

Fusayoshi KAWAKAMI
President, Miyagi Technical College, Natori
Akie ASADA
Professor, Tohoku Institute of Technology, Sendai
and
Eiji YANAGISAWA
Associate Professor, Tohoku University, Sendai

(Received 14 November, 1979 and in revised form 15 January, 1980)

Abstract

Housing sites recently developed in the suburbs of Sendai were heavily shaken by the Off-Miyagi Earthquake on June 12, 1978, the houses on the sites being severely damaged. These damages were concentrated on the sites where deep valleys had been filled by volcanic ash soils without sufficient compaction. Extensive soil explorations, soil tests and soil dynamic analys were performed in order to investigate the stability of the slopes and causes of the ground failures. Conclusions based on these results are presented in this paper.

Key words

earthquake, damage, housing sites, geotechnical analysis