Evaluations of CyberShake simulated motions for use in engineering analysis

Ganyu Teng, & Jack W. Baker

Published August 13, 2017, SCEC Contribution #7553, 2017 SCEC Annual Meeting Poster #239

This poster presents the results from evaluation of simulated motions for building code analysis and practical engineering design at sites in the Los Angeles area. The feasibility of using physics-based ground motion simulations is studied by comparing selected ground motions from databases of CyberShake simulations and recordings from past earthquakes. Ground motions are selected for the two sites in Los Angeles, while complying with ASCE 7-16 building code requirements, to study some major ground motion metrics of the two data sources. Two sites with different soil classes are chosen for comparison. In particular, shaking duration, directional polarization and consistency of the selected ground motions’ properties with hazard analysis deaggregation are evaluated. Several empirical models on shaking duration are incorporated in the assessment. Results from the CyberShake are also used to explore the impact of magnitude and site-rupture distance on the directional polarization. This poster highlights several issues to be considered as the engineering community transitions toward using simulated instead of recorded ground motions.

Citation
Teng, G., & Baker, J. W. (2017, 08). Evaluations of CyberShake simulated motions for use in engineering analysis. Poster Presentation at 2017 SCEC Annual Meeting.

Related Projects & Working Groups
Earthquake Engineering Implementation Interface (EEII)