Study on applicability of effective stress analysis considering large-strain liquefaction characteristics of sandy soils
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- FUJII Noriyuki
- 東京大学大学院博士課程工学系研究科社会基盤学専攻
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- KIYOTA Takashi
- 東京大学生産技術研究所 基礎系部門
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- UDEDA Kyohei
- 京都大学防災研究所 地盤災害研究部門
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- KURIMA Jun
- 東京大学生産技術研究所 基礎系部門
Bibliographic Information
- Other Title
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- 砂質土の大ひずみ液状化特性を考慮した有効応力解析の適用性に関する研究
Abstract
<p>The behavior of large strain region during liquefaction was analyzed by focusing on the relationship between the normalized cumulative dissipated energy ΣΔW/σ’c and φ/φf, which is the internal friction angle φ at each loading stage divided by the peak internal friction angleφf. The results showed that φ/φf tends to decrease after ΣΔW/σ’c peaks, and this trend depended on the relative density. The tendency of φ/φf to decrease was formulated, and a one-element simulation was performed using an effective stress analysis method based on finite deformation theory that incorporates the formulated relationship. As a result, the improved effective stress analysis method was able to simulate the behavior up to the large strain region with a certain degree of accuracy. However, the simulation using the specimen model caused divergence in the middle of the analysis. We plan to improve the method, including stability improvements.</p>
Journal
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- SEISAN KENKYU
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SEISAN KENKYU 75 (4), 287-291, 2023-11-01
Institute of Industrial Science The University of Tokyo
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Details 詳細情報について
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- CRID
- 1390579753348474752
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- ISSN
- 18812058
- 0037105X
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- Text Lang
- ja
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- Data Source
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- JaLC
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- Abstract License Flag
- Disallowed