Current state of integrated earthquake simulation for earthquake hazard and disaster

Hori, Muneo; Ichimura, Tsuyoshi

doi:10.1007/s10950-007-9083-x

Cited by 65 publications

(32 citation statements)

References 26 publications

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“…The earthquake induced damages, λ earthquake , in the region are estimated using a physics based seismic response analysis simulator [9], with the strong ground motion of 1995 Kobe earthquake. The damage state of buildings are evaluated based on a simple standard criterion used in earthquake engineering; buildings are considered to be damaged if the inter-story drift angle is larger than 0.005 [10].…”

Section: Common Setingsmentioning

confidence: 99%

Time Critical Mass Evacuation Simulation Combining A Multi- Agent System and High-Performance Computing

Aguilar¹,

Wijerathne²,

Hori³

2017

Multi-Agent Systems

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This chapter presents an application of multi-agent systems to simulate tsunami-triggered mass evacuations of large urban areas. The main objective is to quantitatively evaluate various strategies to accelerate evacuation in case of a tsunami with a short arrival time, taking most inluential factors into account. Considering the large number of lives in fatal danger, instead of widely used simple agents in 1D networks, we use a high-resolution model of environment and complex agents so that wide range of inluencing factors can be taken into account. A brief description of the multi-agent system is provided using a mathematical framework as means to easily and unambiguously refer to the main components of the system. The environment of the multi-agent system, which mimics the physical world of evacuees, is modelled as a hybrid of a high-resolution grid and a graph connecting traversable spaces. This hybrid of raster and vector data structures enables modelling large domain in a scalable manner. The agents, which mimic the heterogeneous crowd of evacuees, are composed of diferent combinations of basic constituent functions for modelling interaction with each other and environment, decision-making, etc. The results of tuning and validating of constituent functions for pedestrian-pedestrian, car-car and car-pedestrian interactions are presented. A scalable high-performance computing (HPC) extension to address the high-computational demand of complex agents and highresolution model of environment is briely explained. Finally, demonstrative applications that highlight the need for including sub-meter details in the environment, diferent modes of evacuation and behavioural diferences are presented.

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Section: Common Setingsmentioning

confidence: 99%

Time Critical Mass Evacuation Simulation Combining A Multi- Agent System and High-Performance Computing

Aguilar¹,

Wijerathne²,

Hori³

2017

Multi-Agent Systems

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“…Since high performance computing (HPC) is a key role to carry out a large number of buildings in the target area, OpenMPI application has been applied to IES in order to enable parallel processing on the Central Processing Units (CPUs) for building modeling of all buildings [1][2][3][4][5][6][7]. In this study, a double-layer platform of HPC was proposed to simulate earthquake and tsunami scenarios in a reasonably short time.…”

Section: Double-layer Platform Of High Performance Computingmentioning

confidence: 99%

“…In order to reduce the loss of human life in future earthquake and tsunami, damage prediction is a key role for constructing prevention measure and raising awareness of people. For damage prediction in a target area, computer technology has been applied to simulate earthquake scenarios, such as Integrated Earthquake Simulation (IES) [1][2][3][4][5][6][7]. Integrated Earthquake Simulation (IES) is an earthquake simulation tool for predicting and illustrating structural damage of all buildings in the target area simultaneously in selected earthquake scenarios.…”

Section: Introductionmentioning

confidence: 99%

Double-Layer Platform of High Performance Computing for Damage Prediction of Rc Buildings Subject to Earthquake and Subsequent Tsunami in a Target Area

Latcharote¹,

Kai²

2015

Proceedings of the 5th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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“…Integrated earthquake simulation (IES) is a candidate of the numerical simulation-based tool, see Hori (2007) and Hori and Ichimura (2008). IES has been developed in Japan, and a new version is being developed in Turkey which targets Istanbul.…”

Section: Introductionmentioning

confidence: 99%

Development of integrated earthquake simulation system for Istanbul

et al. 2016

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Recent advances in computing have brought a new and challenging way to tackle the earthquake hazard and disaster problems: integration of the seismic actions in the form of numerical models. For this purpose, integrated earthquake simulation (IES) has been developed in Japan, and now a new version is being developed in Turkey which targets Istanbul. This version of IES is being built in MATLAB and includes site response analysis and structural analysis of existing buildings with data obtained via GIS databases. In this study, we present an initial application in Zeytinburnu district of Istanbul where the results are expressed in the form of spatial distributions of ground motion and building responses. At the end of the analysis, it is seen that most of the buildings make small displacements and the displacement values are directly proportional to the total height of the structures. Since the obtained ground motion distribution and peak values are not very high, structural damage has not been observed under the current simulation. The effect of bedrock depth and soil parameters on strong ground motion distribution has been observed. The most effective ground motion locations in the selected area have been determined, and the critical buildings that have maximum displacement during the earthquake motion are detected. Currently, the IES on MATLAB does not include the source to bedrock wave propagation mechanism and the resulting ground motions at each grid point. In future studies, alternative models for this purpose along with input model parameters for Istanbul will be applied. Once the source-to-structure integrated model is complete, past earthquakes as well as potential scenario events in Istanbul will be modeled in the final form of IES on MATLAB. Results will be valuable for a variety of purposes ranging from disaster mitigation to emergency management. In future part of this study, site vibration tests will also be made for buildings that do not comply with seismic design codes and constitute the largest portion of the seismic risk. New models will be developed for these buildings and adopted into the IES system.

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Current state of integrated earthquake simulation for earthquake hazard and disaster

Cited by 65 publications

References 26 publications

Time Critical Mass Evacuation Simulation Combining A Multi- Agent System and High-Performance Computing

Time Critical Mass Evacuation Simulation Combining A Multi- Agent System and High-Performance Computing

Double-Layer Platform of High Performance Computing for Damage Prediction of Rc Buildings Subject to Earthquake and Subsequent Tsunami in a Target Area

Development of integrated earthquake simulation system for Istanbul

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