Current state of integrated earthquake simulation for earthquake hazard and disaster |
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| Authors: | Muneo Hori Tsuyoshi Ichimura |
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| Institution: | (1) Earthquake Research Institute, University of Tokyo, Yayoi, Bunkyo, Tokyo 113-0032, Japan;(2) Department of Civil Engineering, Tokyo Institute of Technology, Tokyo, Japan |
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| Abstract: | This paper presents the current state of integrated simulation for earthquake hazard and disaster. This simulation takes advantage
of the macro–micro analysis method; this method estimates an earthquake’s strong motion with high spatial and temporal resolution,
using the bounding medium theory to obtain optimistic and pessimistic estimates of expected strong motion distribution and
the singular perturbation expansion that results in an efficient multi-scale analysis. Integrated earthquake simulation calculates
seismic responses for all structures in a target area, inputting simulated strong ground motion to a structure analysis method
that is plugged into the system by means of a wrapper; a suitable method, linear or nonlinear, is chosen depending on the
type of the structure. The results of all simulations are visualized so that residences and government officials can share
a common recognition of earthquake hazard and disaster. Two examples of this integrated earthquake simulations are presented;
one is made by plugging nonlinear structure analysis methods into the system, and the other is made for an actual city, the
computer model of which is constructed with the help of available geographical information systems. |
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| Keywords: | Integrated earthquake simulation Stochastic modeling Multi-scale analysis Seismic response analysis for structures |
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