Document Type

Conference Proceeding

Language

eng

Format of Original

11 p.

Publication Date

7-2014

Publisher

Earthquake Engineering Research Institute

Source Publication

Tenth U.S. National Conference on Earthquake Engineering Frontiers of Earthquake Engineering

Original Item ID

DOI: 10.4231/D3VH5CJ72

Abstract

Seismological modeling technologies are advancing to the stage of enabling fundamental simulation of earthquake fault ruptures, which offer new opportunities to simulate extreme ground motions for collapse safety assessment and earthquake scenarios for community resilience studies. With the goal toward establishing the reliability of simulated ground motions for performance-based engineering, this paper examines the response of a 20-story concrete moment frame building analyzed by nonlinear dynamic analysis under corresponding sets of recorded and simulated ground motions. The simulated ground motions were obtained through a larger validation study via the Southern California Earthquake Center (SCEC) Broadband Platform (BBP) that simulates magnitude 5.9 to 7.3 earthquakes. Spectral shape and significant duration are considered when selecting ground motions in the development of comparable sets of simulated and recorded ground motions. Structural response is examined at different intensity levels up to collapse, to investigate whether a statistically significant difference exists between the responses to simulated and recorded ground motions. Results indicate that responses to simulated and recorded ground motions are generally similar at intensity levels prior to observation of collapses. Collapse capacities are also in good agreement for this structure. However, when the structure was made more sensitive to effects of ground motion duration, the differences between observed collapse responses increased. Research is ongoing to illuminate reasons for the difference and whether there is a systematic bias in the results that can be traced back to the ground motion simulation techniques.

Comments

Published version. Published as part of the proceedings of the conference Tenth U.S. National Conference on Earthquake Engineering Frontiers of Earthquake Engineering, 2014. DOI. © Earthquake Engineering Research Institute 2014.

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