number of downloads : ?
Title Transcription
ジバン カイセキ ニ ミル ブンキ ガイネン ト ヒ キョウジクセイ オ コウリョシタ コウセイ ホウテイシキ ノ コウガクテキ イギ
Title Alternative (English)
Bifurcation Concept in Geotechnical Analysis and the Technological Significance of a Non-coaxial Constitutive Equation of Clay
File
language
jpn
Author
Kamei, Takeshi
Description
This paper describes bifurcation concept in geotechnical analysis and the technological significance of a non-coaxial constitutive equation of clay.
In unconfined compression tests, deformation of specimen is uniform in the early stage of loading. Deformation changes from uniform deformation to non-uniform deformation near maximum load. As that time localization of strain leads to failure of specimens through formation of shear bands. Therefore, signs of failure appear before destruction. Bifurcation analysis gives the bifurcation stress ratio, i.e., stress ratio at the onset of non-uniform deformation. Design and construction of civil engineering works using bifurcation stress ratio is safer than using stress ratio at failure.
By incorporating non-coaxiality into the clay model, Both current stresses and current stress rates influence plastic strain. Consequently, clays become easy to simple-shear. Bifurcation stress ratios became small when the clay model incorporating non-coaxiality was used for bifurcation analysis to model deformation of clay under plane strain undrained loading. Deformation analysis which models construction of earthfill on the soft ground using the clay model demonstrates clear transition from localized strain to fomation of shear bands.
Journal Title
島根大学総合理工学部紀要. シリーズA
Volume
36
Start Page
51
End Page
60
ISSN
13427113
Published Date
2002-12-24
NCID
AA11157087
Publisher
島根大学総合理工学部
Publisher Aalternative
Interdisciplinary Faculty of Science and Engineering, Shimane University
NII Type
Departmental Bulletin Paper
Format
PDF
Text Version
出版社版
Gyoseki ID
e18682
OAI-PMH Set
Interdisciplinary Graduate School of Science and Engineering
Remark
30-41+ / 1997-2007
このエントリーをはてなブックマークに追加