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Intensity Measures and Statistical Approaches for the Engineering Validation of Ground Motion Simulations

Tsioulou, A; Galasso, C; (2017) Intensity Measures and Statistical Approaches for the Engineering Validation of Ground Motion Simulations. In: Proceedings of the 16th World Conference on Earthquake Engineering, 16WCEE 2017. (pp. pp. 1-13). National Information Centre of Earthquake Engineering (NICEE) Green open access

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Abstract

The aim of this article is twofold: first, we propose a list of five ground motion intensity measures (IMs) that act as proxies for the (nonlinear) seismic response of more complex engineered systems, and can therefore be used to validate ground motion simulation methods for engineering applications. The proposed list of IMs include both spectral shape and durationrelated proxies, shown to be the optimal IMs in several probabilistic seismic demand models of different structural types, within the framework of Performance-Based Earthquake Engineering. Second, we propose two quantitative approaches for the engineering validation of ground motion simulations, namely statistical hypothesis testing and information theory measures. We then demonstrate the application of these parameters and validation approaches to ground motion simulations computed using a variety of methods, including the Graves and Pitarka hybrid broadband method, the deterministic Composite Source Model (CSM) method and the stochastic white noise (EXSIM) finite-fault model. These types of validation exercises can highlight the similarities and differences between simulated and recorded ground motions for a given simulation method. The similarities should provide confidence in using the simulation method for engineering applications, while the discrepancies, should help in improving the generation of synthetic records.

Type: Proceedings paper
Title: Intensity Measures and Statistical Approaches for the Engineering Validation of Ground Motion Simulations
Event: 16th World Conference on Earthquake Engineering (16WCEE)
Location: Santiago, Chile
Dates: 9th-13th January 2017
Open access status: An open access version is available from UCL Discovery
Publisher version: http://wcee.nicee.org/wcee/article/16WCEE/WCEE2017...
Language: English
Additional information: This version is the version of record. For information on re-use, please refer to the publisher's terms and conditions.
Keywords: physics-based ground motion simulations; hypothesis testing; relative entropy
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Civil, Environ and Geomatic Eng
URI: https://discovery.ucl.ac.uk/id/eprint/10109207
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