理論応用力学講演会 講演論文集
第64回理論応用力学講演会
セッションID: OS3-02-06
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OS3-2 極大地震時における表層地盤の強い非線形現象とその影響(2)
非線形地盤力学に基く横ずれ断層上のjogの存在を考慮したRiedelせん断帯の生成シミュレーション
豊田 智大野田 利弘山田 正太郎山田 翔太浅岡 顕
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A slip on strike-slip fault causes flower structures and Riedel shear bands within the overlying cover. In our former research, the Riedel shear bands formation process was simulated considering the material imperfection in ground by utilizing the three-dimensional elasto-plastic finite deformation analysis code GEOASIA. On the other hand, it’s known that the existence of jog (geometrical barrier) has an important role on the formation process. This paper simulates a strike-slip faulting process considering jog as a geometrical imperfection in ground on the strike-slip fault. As a result, the formation processes unique to subsidiary fault such as fractal shear bands, P-shear, low and high angle shears appeared.

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