Practical Method for Damage Evaluation Based on Point Estimate Considering Uncertainty of Structural Properties

Abstract:

This study introduces a practical method for evaluating structural damage based on a large-scale simulation targeting expansive areas, like whole cities. In such a seismic simulation that deals with numerous building structures, it is desirable to estimate the damage based on a stochastic evaluation considering the uncertainty of structural properties. This is because an accurate modeling of numerous building structures, according to each designed value, would require a great deal of time. However, a damage evaluation considering the model uncertainty generally involves numerous calculations and is inadequate for such a large-scale simulation. Therefore, we propose a method using the point estimate technique which can estimate the probability of damage under model uncertainty from a small number of calculations. The applicability and usefulness of the proposed method is evaluated by comparing it to the method based on a Monte Carlo simulation.

• Periodical: Applied Mechanics and Materials (Volume 802)
• Pages: 255-260
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.802.255
• Online since: October 2015
• Authors: Kahori Iiyama*, Masataka Hoso, Takanori Ishida, Kohei Fujita, Yoshihiro Yamazaki, Tsuyoshi Ichimura, Lalith Wijerathne, Hitoshi Morikawa, Muneo Hori, Satoshi Yamada, Hiroyasu Sakata, Hiroaki Yamanaka, Soichi Hirose
• Keywords: Damage Evaluation, Gram-Charlier Expansion, Point Estimate, Probability Density Function

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