STUDY ON GENERATION MECHANISM OF OPEN CRACKS IN THE SOIL EMBANKMENT UNDERLYING LIQUEFIABLE SOIL GROUND
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- HARADA Yomi
- 京都大学大学院 工学研究科都市社会工学専攻
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- GOTO Hiroyuki
- 京都大学 防災研究所
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- SAWADA Sumio
- 京都大学 防災研究所
Bibliographic Information
- Other Title
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- 液状化地盤上の盛土における引張クラック発生メカニズムについての一考察
Abstract
<p> Current seismic design standards of soil embankments mainly considers circular slip caused by shear failure. However, many open cracks caused by tensile failures has been observed in soil embankments during the past earthquakes. Soil embankments need to be designed considering not only shear failure but also tensile failure. In this study, we performed numerical simulation of soil embankments underlying liquefiable soil ground. eXtended Finite Element Method (XFEM) incorporating the elasto-plastic model considering both shear and tensile failures is adopted in the numerical simulations. Two types of embankments with different heights are vibrated by two types of input motions with different frequencies. Tensile cracks occur from either surface or bottom of the embankment. The tensile crack formation might be explained based on; dynamic displacement occurring inside the embankment causes the tensile crack, and permanent displacement accompanying the lateral flow causes the tensile crack, respectively.</p>
Journal
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- Journal of Japan Society of Civil Engineers, Ser. A1 (Structural Engineering & Earthquake Engineering (SE/EE))
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Journal of Japan Society of Civil Engineers, Ser. A1 (Structural Engineering & Earthquake Engineering (SE/EE)) 76 (4), I_96-I_105, 2020
Japan Society of Civil Engineers
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Details 詳細情報について
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- CRID
- 1390285697591162112
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- NII Article ID
- 130007897854
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- ISSN
- 21854653
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed