Shiro Takada

TL;DR: In this paper, a new simplified method is developed for obtaining the maximum strain in steel pipes crossing faults considering non-linearity of material and geometry of pipe section, and the relation between maximum strain and bent angle has been obtained using a beam-shell hybrid FEM for different pipe-fault conditions.

TL;DR: In this paper, a new shell finite element method with an equivalent boundary is presented for estimating the response of a buried pipeline under large fault movement, where the material property of pipe segment far away from the fault is considered as elastic, and nonlinear spring elements at equivalent boundaries are obtained and applied to two ends of shell model.

TL;DR: In this article, a measure and a model that indicate the time available for evacuation are proposed, which is defined as the period from when people start to feel the shaking until they cannot move at all, is measured by the IISI.

TL;DR: In this paper, the authors proposed a risk assessment method for the functional reliability of a transportation system immediately after an earthquake, which uses two assessment approaches to evaluate the differences of cumulative injured people who receive medical care and decides on the destination of medical facility in the simulation, two ways of deciding are addressed; one uses information only on the road network, and the other uses information on both road network and hospital availability.

TL;DR: In this article, the authors analyzed the damage ratio in water distribution, gas and telecommunication pipelines buried normal and parallel to the fault direction using GIS database and simulated strong ground motions in these two directions at near-field considering the S-wave radiation pattern.