La Villita Dam Response during Five Earthquakes including Permanent Deformation

Elgamal, Ahmed; Scott, Ronald F.; Succarieh, Mohamed F.; Yan, Liping

doi:10.1061/(asce)0733-9410(1990)116:10(1443)

Cited by 77 publications

(23 citation statements)

References 6 publications

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“…However, even in this lone case study, the method of shear strength evaluation and seismic demand evaluation ͑in which compliance of the slide mass was neglected͒ differs from modern practice. It should be noted, for the sake of thoroughness, that some additional case studies of slope displacements in earth dams ͑e.g., La Villita Dam, Mexico, Elgamal et al 1990; San Fernando Dams, Calif., Bardet and Davis 1996͒ and solid-waste landfills ͑Augello et al 1995͒ have been reported, however those case studies have different boundary conditions and material types than are typical of natural slopes, and measured displacements have unknown contributions from volumetric strains in unsaturated compacted soils ͑i.e., seismic compression, for example, see Stewart et al 2001͒. This paper describes a case history involving slope displacements induced by the M W = 6.7 Northridge, California Earthquake. We describe the nature of the earthquake-induced sliding as well as a subsequent rainfall-induced slide, review the results of site exploration work that includes extensive subsurface exploration and laboratory testing for shear strength, and describe the results of backanalyses of both the seismic and rainfall-induced landslides.…”

Section: Introductionmentioning

confidence: 99%

Case History of Landslide Movement during the Northridge Earthquake

Pradel

Smith

Stewart

et al. 2005

J. Geotech. Geoenviron. Eng.

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Abstract:We document a case history of Northridge earthquake induced movement of a coherent landslide mass comprised principally of weathered, previously sheared siltstone. Information on the residual shear strength of the material through which the sliding occurred is available both from backanalysis of a static ͑rainfall-induced͒ failure on the same slope and laboratory test data. Postearthquake field reconnaissance data establishes the seismic slope displacements near the slope crest. A yield coefficient is estimated for the slope based on residual shear strengths and measured groundwater levels at the time of the Northridge earthquake. This yield coefficient is used with four horizontal equivalent acceleration time histories ͑that approximate the seismic demand within the slide mass͒ in Newmark sliding block displacement analyses. The calculated displacements range from approximately 20 to 90 mm, which compares well with observed displacements at the slide scarp of approximately 50 mm.

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Section: Introductionmentioning

confidence: 99%

Case History of Landslide Movement during the Northridge Earthquake

Pradel

Smith

Stewart

et al. 2005

J. Geotech. Geoenviron. Eng.

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“…Following the conclusions of previous researchers (Elgamal et al, 1990;Elgamal, 1992;Succarieh et al, 1993;Gazetas & Uddin, 1994;Uddin, 1997), it is suggested that perhaps some minor localised failure at the position close to the monitoring instrument may have happened before, which could have created a local discontinuity. This could have 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 originated possibly from a previous seismic event or even from some construction processes.…”

Section: Commentsmentioning

confidence: 68%

A case study on the seismic performance of earth dams

Pelecanos¹,

KONTOE²,

ZDRAVKOVIĆ³

2015

Géotechnique

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The seismic nonlinear behaviour of earth dams is investigated by using a well-documented case study and employing advanced static and dynamic coupled-consolidation finite element analysis. The static part of the analysis considers the layered construction, reservoir impoundment and consolidation, whereas the dynamic part considers the response of the dam to two earthquakes of different magnitude, duration and frequency content. The results of the analysis are compared with the recorded response of the dam and exhibit a generally good agreement. The effects of the narrow canyon geometry, the reservoir impoundment and the elasto-plastic soil behaviour on the seismic dam behaviour are investigated. Finally the implications of the adopted constitutive modelling assumptions on the predicted response are discussed.

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“…2) are of sufficient quality to be useful for numerical analysis [Elgamal, 1992] (see Pelecanos et al [2015] for more details about the instrumentation). The seismic response of the dam was investigated by previous researchers, who were particularly interested in dynamic dam behavior [Elgamal, 1992;Pelecanos, 2013;Pelecanos et al, 2015], permanent displacements [Elgamal et al, 1990;Succarieh et al, 1993;Gazetas and Uddin, 1994;Uddin, 1997], and dam-canyon interaction [Papalou and Bielak, 2001;Papalou and Bielak, 2004].…”

Section: Description Of the Dammentioning

confidence: 99%

The Effects of Dam–Reservoir Interaction on the Nonlinear Seismic Response of Earth Dams

Pelecanos

Kontoe

Zdravković

2018

Journal of Earthquake Engineering

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The objective of this study is to investigate the effects of damreservoir interaction (DRI) on the nonlinear seismic response of earth dams. Although DRI effects have for long been considered as insignificant for earth dams, that conclusion was mainly based on linear elastic investigations which focused only on the acceleration response of the crest without examining the seismic shear stresses and strains within the dam body. The present study explores further the impact of DRI focusing on the nonlinear behavior of earth dams. The effects of reservoir hydrodynamic pressures are investigated in terms of both seismic dam accelerations and nonlinear dynamic soil behavior (seismic shear stresses and strains). It is shown that although dam crest accelerations are indeed insensitive to DRI, the stress and strain development within the dam body can be significantly underestimated if DRI is ignored. ARTICLE HISTORY

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La Villita Dam Response during Five Earthquakes including Permanent Deformation

Cited by 77 publications

References 6 publications

Case History of Landslide Movement during the Northridge Earthquake

Case History of Landslide Movement during the Northridge Earthquake

A case study on the seismic performance of earth dams

The Effects of Dam–Reservoir Interaction on the Nonlinear Seismic Response of Earth Dams

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