The impact of vibration-controlled systems in catastrophe modelling

Alin Radu, Irina Lazar

Research output: Contribution to conferenceConference Paperpeer-review

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Catastrophe (CAT) modelling is a field that combines science and engineering to assess natural and man-made catastrophe risk to allow the risk-takers to better understand and manage their risks. CAT modelling has an
essential role in the (re)insurance industry, in which probabilistic models are used to quantify the risk of perils, such as earthquakes. The purpose of this paper is to analyse whether the implementation of vibration-control systems can reduce the seismic risk.
The CAT modelling framework described in this paper is for a hypothetical settlement, located in a seismic zone. Three main components are essential in CAT modelling: the hazard, the exposure, and the engineering parts, each modelled, in this paper, using simplified approaches. The seismic hazard is described by a probabilistic model for earthquakes characterized by two parameters, the moment magnitude and the epicentral distance. The
exposure is represented by a deterministic distribution of buildings idealized as single-degree-of-freedom linear and non-linear systems. Finally, the engineering part develops two sets of empirical vulnerability curves for the
vibration-uncontrolled and controlled systems, using a dataset of real ground-motion records. The seismic risk of the portfolio of controlled and uncontrolled systems will be evaluated in terms of metrics used in CAT modelling, such as the annual average loss, and the exceedance-probability curves, which indicate the loss
expected to occur at given intervals of time.
Original languageEnglish
Publication statusPublished - 18 Jun 2018
Event16th European Conference on Earthquake Engineering: Thessaloniki - 2018 - Thessaloniki, Greece
Duration: 18 Jun 201821 Jun 2018
Conference number: 16


Conference16th European Conference on Earthquake Engineering
Abbreviated title16ECEE
Internet address


  • Catastrophe modeling
  • seismic risk assessment
  • tuned-inerter damper


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