UPLIFT OF SEWER MANHOLES DURING THE 1993 KUSHIRO-OKI EARTHQUAKE
キーワード:
(uplift) (IGC : E8/H8)
1997 年 37 巻 1 号 p. 109-121
詳細
1997 年 37 巻 1 号 p. 109-121
During the 1993 Kushiro-Oki Earthquake, several sewer manholes in Kushiro Town were ejected up to 1.5m. In order to evaluate their failure mechanism, level and boring surveys, cut-off investigation and laboratory tests were carried out. It was estimated that the backfill soil which liquefied extensively moved laterally toward the bottom of the ejected manholes. Possible influences of the original subsoil on the uplift displacement are discussed together with the applicability of safety factor against uplift.
