Seismic Performance of Earth Structures during the February 2010 Maule, Chile, Earthquake: Dams, Levees, Tailings Dams, and Retaining Walls

Verdugo, Ramón A. Morillo; Sitar, Nicholas; Frost, J. David; Bray, Jonathan D.; Candia, Gabriel; Eldridge, Terry; Hashash, Youssef M. A.; Olson, Scott M.; Urzua, Alfredo

doi:10.1193/1.4000043

Cited by 45 publications

(12 citation statements)

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“…When failures did occur they were typically either liquefaction-triggered failures of waterfront structures retaining saturated backfill, or structures on slopes and retaining sloping backfill [8]. Most recently, very few cases of damage of retaining structures occurred in the 2008 Wenchuan earthquake in China, the 2010-2011 Canterbury earthquakes in Christchurch, New Zealand (Kendal Riches, [10]), and in the great subduction earthquakes in Chile in 2010 (Verdugo et al, [11]) and Japan in 2011 [8]. Fig.…”

Section: Observed Response In Recent Earthquakesmentioning

confidence: 99%

On seismic response of stiff and flexible retaining structures

Wagner¹,

Sitar

2016

Soil Dynamics and Earthquake Engineering

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A B S T R A C TThis paper presents an overview of the results of experimental and analytical studies of the seismic response of stiff and flexible retaining structures. These studies were motivated by very large dynamic forces in areas of high seismicity predicted by current seismic design methodologies based on the work of Okabe [3] and Mononobe and Matsuo [4]. However, there is no evidence of systematic failures of retaining structures in major earthquakes even when the ground accelerations clearly exceeded the design assumptions. The experimental program consisted of a series of geotechnical centrifuge model studies with different types of structures with cohesionless and cohesive backfill. Overall, the results of these studies show that the Mononobe-Okabe (M-O) method of analysis provides a reasonable upper bound for the response of stiff retaining structures and that flexible retaining structures experience loads significantly smaller than those predicted by this method. Moreover, for deep embedded structures the dynamic forces do not continue to increase with depth and gradually become a small fraction of the overall load on the walls.

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Section: Observed Response In Recent Earthquakesmentioning

confidence: 99%

On seismic response of stiff and flexible retaining structures

Wagner¹,

Sitar

2016

Soil Dynamics and Earthquake Engineering

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“…LP is in the range of [1][2][3][4][5] Hz, VT is in [2][3][4][5][6][7][8][9][10][11][12][13][14][15] Hz and TR is in [1][2][3][4][5]Hz. In addition to this, additive noise in sensors have a broad frequency range.…”

Section: Resultsmentioning

confidence: 99%

“…This is because the subduction between the Nazca and South American plates [1,2]. This subduction of the oceanic cortex below the continental margin has allowed the development of the major orogenic system called "Los Andes" [3].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Llaima volcano activities for localization and classification of LP, VT and TR events

Firoozabadi

Seguel

Soto

et al. 2017

Journal of Electrical Engineering

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Evaluation of seismic signals is one of the most important research topics on Volcanology. Volcanoes have daily activity; therefore, high speed evaluation of recorded signals is a challenge for improving the study of the natural phenomena occurring inside these natural formations. The aim of this paper is the evaluation (denoising, localization and classification) and analysis of Llaima volcano activities, one of the most actives volcanoes in South America. Different already proposed methods, such as, Butterworth, Spectral Subtraction (SS) and Wiener Filter (WF) are compared to the proposed Modified Spectral Subtraction (MSS) and Modified Wiener Filter (MWF) to find the best method for denoising the volcano signals. Then, event localization based on received signals of volcano is performed. In this step, Time Delay Estimation (TDE)-based method is used on data acquired from 3 mechanical sensors located in the volcano area. The proposed method is used to estimate the area for event location. The proposed denoising methods make the starting point for the event more evident to increase the localization accuracy for events where the starting point is difficult to find. In the last step, a method based on the novel DNN technique is proposed to classify the three main events occurring in the Llaima volcano (TR (Tremor), LP (Long Period) and VT (Volcano Tectonic)).

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“…Large bridge overcrossings with high ground water table are particularly vulnerable to liquefaction‐induced lateral spreading and loss of pile foundation capacity during earthquakes . Damage to such bridges has been observed in reconnaissance investigations, including the recent 2010 Maule and the 2011 Christchurch earthquakes . From these investigations, observed response was often noted to be highly influenced by the global bridge‐ground overall characteristics as an integral system.…”

Section: Introductionmentioning

confidence: 99%

Aspects of bridge‐ground seismic response and liquefaction‐induced deformations

Qiu

Ebeido

Almutairi

et al. 2020

Earthq Engng Struct Dyn

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SUMMARY Considerable bridge‐ground interaction effects are involved in evaluating the consequences of liquefaction‐induced deformations. Due to seismic excitation, liquefied soil layers may result in substantial accumulated permanent deformation of sloping ground near the abutments. Ultimately, global response is dictated by the bridge‐ground interaction as an integral system. However, a holistic assessment of such response generally requires a highly demanding full three‐dimensional (3D) model of the bridge and surrounding ground. As such, in order to capture a number of the salient involved mechanisms, this study focuses on the longitudinal seismic performance of a simpler idealized configuration, motivated by details of an existing bridge‐ground configuration. In this model, a realistic multilayer soil profile is considered with interbedded liquefiable/nonliquefiable strata. The effect of the resulting liquefaction‐induced ground deformation is explored. Attention is given to overall deformation of the bridge structure due to lateral spreading in the vicinity of the abutments. The derived insights indicate a need for such global analysis techniques, when addressing the potential hazard of liquefaction and its consequences.

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Seismic Performance of Earth Structures during the February 2010 Maule, Chile, Earthquake: Dams, Levees, Tailings Dams, and Retaining Walls

Cited by 45 publications

References 1 publication

On seismic response of stiff and flexible retaining structures

On seismic response of stiff and flexible retaining structures

Evaluation of Llaima volcano activities for localization and classification of LP, VT and TR events

Aspects of bridge‐ground seismic response and liquefaction‐induced deformations

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