Damage Factors for Small Embankment Dams Due to the Hyogoken-Nambu Earthquake —Case Study on Hokudan Town—

Fujii, Hiroaki; Kunimasa, Kana; Nanba, Akiyo; Yokomizo, Takayuki; Nishimura, Shin Ichi; Shimada, Kiyoshi; Hori, Tohru; Nishiyama, Tatsuro

doi:10.3208/sandf.40.6_117

Cited by 2 publications

(1 citation statement)

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“…A large number of small-sized earth-fill dams were severely damaged in the preceding events of the 1995 Hyogo-ken Nanbu Earthquake (Fujii et al 2002), the 2007 Noto Peninsula Earthquake (Mohri et al 2008) and the 2011 Great East-Japan Earthquake (Hori et al 2012). It has been pointed out that the damaged earth-fill dams were neither well compacted nor waterproofing (Tanaka et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Seismic behavior and numerical simulation of a small-sized earth-fill with bentonite sheet observed in shaking table test

Jeong

Shibuya

Kataoka

et al. 2016

JGS Special Publication

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Recently, a bentonite sheet is often employed in deteriorated earth-fill dams for preventing water leakage. However, it is concerned that a slipping type of failure may occur at the boundary between the bentonite sheet and the fill material in the event of seismic attack. In this paper, seismic behavior of a small-sized earth fill model inside which a bentonite sheet was mantled was examined in shaking table test, and it was simulated by numerical analysis. It is manifested in the shaking table test that a shallow slip surface developed in the fill above the bentonite sheet, and no harmful deformation was observed along the bentonite sheet when subjected to seismic motion, noting also that the shallow failure was successfully simulated by pseudo static limit equilibrium analysis. In addition, it was confirmed that the seismic response of the model earth-fill was unaffected by the existence of bentonite sheet as examined by FEM seismic numerical simulations.

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Section: Introductionmentioning

confidence: 99%