4.5 Article

On Conditional Simulation of Spatially Varying Rotational Ground Motion

期刊

JOURNAL OF EARTHQUAKE ENGINEERING
卷 25, 期 6, 页码 1191-1226

出版社

TAYLOR & FRANCIS LTD
DOI: 10.1080/13632469.2019.1573158

关键词

Spatially varying rotational ground motion; apparent translational component; rotational coherence model; event-to-event variability of lagged coherency; Torsional and rocking motion

资金

  1. SERB/DST, Government of India [SB/S3/CEE/012/2013]

向作者/读者索取更多资源

This paper investigates the applicability of two frameworks based on CSD and ASD for rotational ground motion, explores spatially varying rotational ground motion for a future event, and examines the choice of representation of ASD.
Authors elsewhere reported two frameworks for conditional simulation of spatially varying translational ground motion, namely, (i) cross-spectral density (CSD) based framework and (ii) auto-spectral density (ASD) based framework. This paper investigates the applicability of both the frameworks for rotational components. Rotational components are extracted here using one of the Single Station Procedures reported in the literature. Spatially varying rotational ground motion for a future event is explored using a coherency model calibrated against a past event and an estimate of ASD of the seed (rotational) ground motion. Choice of representation of ASD is also investigated.

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