Simulation Based Earthquake Risk and Resilience of Interdependent Systems and Networks

Project Title

Partner Organisations

Facultad de Ingeniería

Internal ID

1170836

Principal Investigator

Candia Agusti, Gabriel

Type

basic research

Publications

Now showing 1 - 10 of 17

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A simplified and versatile element model for elastomeric seismic isolation bearings
(2021)
Sebastián Miranda
;
Eduardo Miranda
;
Juan Carlos de la Llera
A novel approach for two-dimensional modeling of elastomeric bearings using three springs in parallel is presented. This simplified element model considers as follows: (1) an elastoplastic spring with a smooth transition between branches; (2) a linear elastic spring; and (3) a non-linear elastic spring, and is fully defined by only six parameters. The main advantages of the simplified model are twofold: (1) versatility, as a single model is capable of accurately reproducing the main characteristics of the hysteretic behavior of different types of rubber-based seismic isolators, including low damping rubber bearings (LDRBs), high damping rubber bearings (HDRBs), and lead-core rubber bearings (LRBs) and (2) simplicity, as it requires fewer parameters and it is easier to calibrate from experimental cyclic test results than most currently available models. Model parameters’ identification is illustrated using quasi-static cyclic and earthquake simulator tests of HDRBs and LRBs, demonstrating that the model shows a good agreement between the test-measured and model-predicted hysteretic behavior. Different objective functions are evaluated in the optimization procedure, and their effect on the identified parameters is studied and discussed. This practitioner-oriented model is particularly amenable for implementation in general-purpose structural analysis software. Its usage is strongly recommended as an initial-stage design tool to select the optimal isolation system for a specific project.
11Scopus© Citations 10
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The September 19, 2017 Mw 7.1 Puebla-Mexico City earthquake: Observed rockfall and landslide activity
(2020)
Jack Montgomery
;
CANDIA AGUSTI, GABRIEL ALFONSO
;
Anne Lemnitzer
;
Alejandro Martinez
2Scopus© Citations 13
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Modelling of earthquake-induced pounding between adjacent structures with a non-smooth contact dynamics method
(2021)
T. Langlade
;
D. Bertrand
;
S. Grange
;
CANDIA AGUSTI, GABRIEL ALFONSO
;
J.C. de la Llera
7Scopus© Citations 12
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Collapse risk assessment of a Chilean dual wall-frame reinforced concrete office building
(2019)
G. Araya-Letelier
;
P.F. Parra
;
D. Lopez-Garcia
;
A. Garcia-Valdes
;
CANDIA AGUSTI, GABRIEL ALFONSO
Scopus© Citations 24 1
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Toppling of rigid electric equipment during earthquakes
(2018)
Miguel A. Jaimes
;
CANDIA AGUSTI, GABRIEL ALFONSO
5Scopus© Citations 14
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Interperiod Correlation Model for Mexican Interface Earthquakes
(2019)
Miguel A. Jaimes
;
CANDIA AGUSTI, GABRIEL ALFONSO
<jats:p>This article presents a correlation model for pseudo-acceleration, peak ground acceleration, and peak ground velocity residuals using a database of Mexican subduction interface earthquakes at rock sites (NEHRP Class B). A mixed-effect regression model, a ground motion model, and 40 event recordings (418 records) with moment magnitude between five and eight were used to develop a magnitude-independent correlation model. This region-specific model yields consistently higher correlation values compared with similar studies developed for shallow crustal regions and other subduction zones worldwide, particularly for pseudo-acceleration values at distant periods. These results support the idea of using a region-specific and mechanism-specific correlation model for Mexico's subduction zone.</jats:p>
9Scopus© Citations 17
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New developments for the performance-based assessment of seismically-induced slope displacements
(2020)
Jorge Macedo
;
CANDIA AGUSTI, GABRIEL ALFONSO
;
Maxime Lacour
;
Chenying Liu
2Scopus© Citations 35
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Seismic risk of sliding ground-mounted rigid equipment
(2020)
Miguel A Jaimes
;
CANDIA AGUSTI, GABRIEL ALFONSO
7Scopus© Citations 17
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Uncertainty on measurement of elastomeric isolators effective properties
(2021)
Sebastián Miranda
;
Juan Carlos de la Llera
;
Eduardo Miranda
Scopus© Citations 7 3
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An integrated platform for seismic hazard evaluation
(2018)
CANDIA AGUSTI, GABRIEL
;
MacEdo J.
;
Magna-Verdugo C.
11

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