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.


    Access

    Download


    Export, share and cite



    Title :

    Validation of stochastic ground motion model modification by comparison to seismic demand of recorded ground motions


    Contributors:
    Tsioulou, A (author) / Taflanidis, AA (author) / Galasso, C (author)

    Publication date :

    2019-06-15


    Remarks:

    Bulletin of Earthquake Engineering , 17 pp. 2871-2898. (2019)


    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



    Classification :

    DDC:    629




    Simulated ground motions for seismic risk assessment of structures

    Tsioulou, Alexandra | BASE | 2018

    Free access


    Seismic Risk Analysis of Concrete Gravity Dams under Near-Fault Ground Motions

    Hebbouche, Abdelhamid / Bensaibi, Mahmoud / Mroueh, Hussein | Tema Archive | 2012