Development of analysis method for evaluating stability of river dikes during earthquake and overflow by a particle method

粒子法评价地震溢流河堤稳定性分析方法的开发

• 批准号: 24760380
• 负责人: HIGO Yosuke
• 金额: $ 2.75万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2012
• 资助国家: 日本
• 起止时间: 2012-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-24760380/
• 关键词: 粒子法; 地震; 越流; 不飽和土; 堤防; 連成解析; 浸食

Damage of river dikes caused by earthquakes is a large deformation problem involving liquefaction, while that caused by overflow is a seepage-erosion coupled problem. Particle methods which are equivalent to the mesh-free methods are effective for simulating these kinds of large deformation problems. In the present study, MPM (Material Point Method) that is one of the particle methods has been extended to a multi-phase coupled dynamic analysis method to analyse unsaturated river dikes during earthquake. In addition, in order to simulate erosion during overflow, the Navier-Stokes equation has been employed as the governing equation of the overflow along the surface of the river dikes, and then it has been solved by HSMAC (Highly Simplified MAC), in which a tractive force is calculated by a frictio law. Coupling HSMAC as a CFD (computational fluid dynamics) and MPM as a CSD (computational fluid dynamics), a CFD-CSD coupled analysis method has been newly developed.

地震引起的堤防破坏是一个液化的大变形问题，而溢流引起的堤防破坏是一个渗流-冲刷耦合问题。与无网格法等价的质点法是模拟这类大变形问题的有效方法。本文将质点法中的质点法MPM（Material Point Method）推广为多相耦合动力分析方法，用于非饱和河堤的地震响应分析。另外，为了模拟溢流时的冲刷，采用Navier-Stokes方程作为溢流沿着堤面的控制方程，然后用HSMAC（Highly Simplified MAC）求解，其中的牵引力由摩擦定律计算。将HSMAC作为计算流体动力学（CFD）和MPM作为计算流体动力学（CSD）耦合，发展了一种新的CFD-CSD耦合分析方法。

项目成果

HSMAC法およびGIMP法を用いた流体-固体連成解析手法に関する基礎的研究

基于HSMAC法和GIMP法的流固相互作用分析方法基础研究

• 发表时间: 2014
• 作者: Mon;E. E.;S. Hamamoto;T. Saito;K. Kawamoto;and T. Komatsu;佐竹紳也;Naka Angelica;有原萌恵，濱本昌一郎，川本健，小松登志子;佐竹，谷口，林ほか;林，谷口，佐竹ほか;田村成仁・高井敦史・乾 徹・栗原太志・勝見 武・荒木 進・嘉門雅史;佐野和文・高井敦史・乾 徹・勝見 武・最上裕生・吉村 貢・荒木 進・嘉門雅史;小川翔太郎・乾 徹・高井敦史・勝見 武;松尾大介,肥後陽介,音田慎一郎,三村衛;松尾大介,肥後陽介,音田慎一郎,三村衛
• 通讯作者: 松尾大介,肥後陽介,音田慎一郎,三村衛

水の流れと土の浸透の連成解析手法に関する基礎的研究

水流与土壤入渗耦合分析方法基础研究

• 发表时间: 2014
• 作者: Mon;E. E.;S. Hamamoto;T. Saito;K. Kawamoto;and T. Komatsu;佐竹紳也;Naka Angelica;有原萌恵，濱本昌一郎，川本健，小松登志子;佐竹，谷口，林ほか;林，谷口，佐竹ほか;田村成仁・高井敦史・乾 徹・栗原太志・勝見 武・荒木 進・嘉門雅史;佐野和文・高井敦史・乾 徹・勝見 武・最上裕生・吉村 貢・荒木 進・嘉門雅史;小川翔太郎・乾 徹・高井敦史・勝見 武;松尾大介,肥後陽介,音田慎一郎,三村衛
• 通讯作者: 松尾大介,肥後陽介,音田慎一郎,三村衛

肥後陽介 研究業績

肥后洋介研究成果