UC Irvine

This paper evaluates the feasibility of using Cybershake (ver. 15.12) ground motions for the response assessment of a 40-story tall building. This work is the first step toward validating the use of simulated ground motions for the response assessment of tall buildings. More than 14,000 pairs of simulated ground motions from Cybershake simulation are compared against 288 pairs of earthquake records from the NGA-West2 database that occurred in the Southern California region in the past 100 years. The goal is to find the similarities between the group of simulated ground motions and the group of recorded ground motions using the engineering demand parameters (i.e., EDPs), earthquake scenarios parameters (i.e., θ), and waveform parameters (i.e., RZZ) in regression models. This paper serves as the continuation of a previous work that suggested a validation methodology to investigate three relationships, RZZ→EDP, θ→EDP, and θ→RZZ. It is observed that both recorded and simulated regression share similar features as the recorded regression coefficients fall into the population of simulated regression coefficients. Further data analysis is needed to ensure simulated ground motion is sufficient and efficient to predict the structural response.