Tsioulou, A;
Taflanidis, AA;
Galasso, C;
(2019)
Validation of stochastic ground motion model modification by comparison to seismic demand of recorded ground motions.
Bulletin of Earthquake Engineering
, 17
pp. 2871-2898.
10.1007/s10518-019-00571-x.
Preview |
Text
Galasso_Validation of stochastic ground motion model modification by comparison to seismic demand of recorded ground motions_AAM.pdf - Accepted Version Download (2MB) | Preview |
Abstract
An important consideration for the adoption of stochastic ground motion models in performance-based earthquake engineering applications is that the probability distribution of target intensity measures from the developed suites of time-histories is compatible with the prescribed hazard at the site and structure of interest. The authors have recently developed a computationally efficient framework to modify existing stochastic ground motion models to facilitate such a compatibility. This paper extends this effort through a validation study by comparing the seismic demand of recorded ground motions to the demand of stochastic ground motion models established through the proposed modification. Suites of recorded and stochastic ground motions, whose spectral acceleration statistics match the mean and variance of target spectra within a period range of interest, are utilized as input to perform response history analysis of inelastic single-degree-of-freedom (SDoF) case-study systems. SDoF systems with peak-oriented hysteretic behavior, strain hardening, and (potentially) degrading characteristics, experiencing different degree of inelastic response, are considered. Response is evaluated using the peak inelastic displacement and the hysteretic energy given by the work of the SDoF restoring force as engineering demand parameters (EDPs). The resultant EDP distributions are compared to assess the effect of (and validate) the proposed modification. It is shown that the proposed modification of stochastic ground motion models can provide results that are similar to these from recorded ground motion suites, improving any (in some cases large) discrepancies that exist for the initial, unmodified stochastic ground motion model.
| Type: | Article |
|---|---|
| Title: | Validation of stochastic ground motion model modification by comparison to seismic demand of recorded ground motions |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1007/s10518-019-00571-x |
| Publisher version: | https://doi.org/10.1007/s10518-019-00571-x |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Stochastic ground motions, Ground motion records, Spectrum compatibility, Hazard compatibility |
| 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 Civil, Environ and Geomatic Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10069481 |
Archive Staff Only
 |
View Item |
