Damage to agricultural facilities

Mohri, Yoshiyuki; Masukawa, Susumu; Hori, Toshikazu; Ariyoshi, Mitsuru

doi:10.1016/j.sandf.2014.06.025

Cited by 11 publications

(1 citation statement)

References 7 publications

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“…A comprehensive summary of the known earthquake damages to 58 earth dams was prepared by Ambraseys (1960) and was revised by Basudhar et al (2010), where important dams' failures were reported briefly. The 2011 off the Pacific Coast of Tohoku Earthquake damaged about 750 dams among the 3730 small earth dams in Fukushima Prefecture; the observed failure modes included slide failure and the lateral deformation of embankments (Hori et al, 2012;Mohri et al, 2014). The seismic performance of earth-fill dams with reservoirs of water has also been examined by some researchers, mainly with dynamic centrifuge tests (Kim et al, 2011) and large-scale shaking table test (Yuan et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Parametric study of the earth dam's behaviour subjected to earthquake

Ayeche

Zitouni

Limam

et al. 2022

Studia Geotechnica Et Mechanica

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Static stability of an earth dam can be established by estimating the static safety factor equal to the ratio of the shear strength to the shear stress along a critical sliding area. In contrast, it is more complicated to evaluate the dynamic stability during an earthquake. The water filling the interstices of the earth dams cannot drain during the short duration of an earthquake. An excess pore water pressure ΔU develops, and its role is predominant in the destabilisation of the dam. The pore water increase causes a decrease in the soil shear strength. It is, therefore, crucial to evaluate and take into consideration ΔU in the dam dynamic stability analysis. This research is a contribution to reach this objective. A parametric study was conducted by varying the physical and mechanical soil characteristics constituting the dam, as well as its geometrical values, in order to evaluate their effects on the dynamic safety factor. The dynamic safety factor is calculated using the pseudo-static method, taking into account the excess pore water pressure that develops during cyclic loading into the granular soil of the earth dam upstream face. The results of the parametrical analytical study were also compared to the results of numerical simulations of the dam seismic stability trough pseudo-static method. The numerical simulations were done with three different software: PLAXIS and ABAQUS (based on the finite element method) and GEOSTAB (deals with the problem at the limit equilibrium using the simplified Bishop method). At the end, on one hand, we were able to describe how and at what level of the dam upstream face the sliding occurs, and on the other hand, we were able to underline the adequate combination between the dam geometric parameters and the mechanical soil characteristics which may ensure seismic stability.

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Section: Introductionmentioning

confidence: 99%