PROGRESSIVE FAILURE OF GEO-STRUCTURE AND STRAIN LOCALIZATION

地质结构和应变定位的逐渐失效

• 批准号: 07305018
• 负责人: OKA Fusao
• 金额: $ 2.69万
• 依托单位: GIFU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07305018/
• 关键词: progressive failure; strain localization; slip surface; geo-structure; element test; model test; finite element method; 地盤; 進行性破壊; 局所化; 実験; 解析

Laboratory element tests as well as model tests have been carried out to investigate the change of microstructure of the geomaterials from the initail state to the failure state. The strain localization behavior were observed.Base on the experimental results, micromechanics-based constitutive models have been proposed. Then these models have been implemented in the numerical method.1) The nonlocal treatments of the constitutive models were proposed to avoid the ill-posedness of the governing equations in the numerical analyzes.2) The role of distinct element method has been investigated.3) The bifurcation theory and the mechanical behavior after the bifurcation point have been carefully investigated.4) Soil-water coupled finite element method has been proposed to simulate the mechanical behavior of geomaterials near/at critical state.

已经进行了实验室元素测试以及模型测试，以调查土地材料从初始状态变为故障状态的微观结构的变化。观察到应变定位行为。基于实验结果，已经提出了基于微力学的组成模型。 1）提出了本构模型的非局部处理方法，以避免数值分析中管理方程的不良性。2）已研究了不同元素方法的作用。3）3）BIFURCATION THENICATION和BIFURCATION CORDICTION仔细研究了Bifurcation Theimical for pointed pointed pointed posited arted arted arted arted arted arted arted arted arted arted earted arted arted real parted arted arted arted real sore coupl。在临界状态附近/处于临界状态的机械行为。

项目成果

関口 秀雄: "遠心力場における進行波造波システムの開発とその適用" 京都大学防災研究所年報. 39・B-2. 15-26 (1996)

关口秀夫：“离心场行波发生系统的开发及其应用”京都大学防灾研究所年报39・B-2（1996）。

H.-B.Muhlhaus: "A Continuum Theory for Random Packings of Elastic Spheres" Proc. IUTAM Sympo. on Fracture of Brittle and Disordered Materials, Concrete, Rocks and Ceramics. 1. 285-298 (1995)

H.-B.Muhlhaus：“弹性球随机堆积的连续体理论”Proc。

関口 秀雄: "遠心力場における進行波造波システムの開発とその応用" 京都大学防災研究所年報. 39・B-2. 15-26 (1996)

关口秀夫：“离心场行波发生系统的开发及其应用”京都大学防灾研究所年报39・B-2（1996）。

吉田 秀典: "マイクロメカニクスに基づく岩盤の連続体モデルと大規模空洞掘削の解析" 土木学会論文集. III-34. 23-41 (1996)

Hidenori Yoshida：“基于微观力学的岩石连续体模型和大规模空腔开挖分析”日本土木工程师学会会刊 III-34（1996）。

YOSHIDA,Hidenori: "Micromechanics-based continuum model for rock masses and analysis of the excavation of underground power cavern" Proc. JSCE. No.535/3-34. 23-41 (1996)

吉田秀德：“基于微力学的岩体连续体模型及地下发电洞室开挖分析”，Proc.