1999 Fiscal Year Final Research Report Summary
Soil-water coupled analysis and experiment on delayed deformation and progressive failure of saturated soils
| Project/Area Number |
10450177
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Geotechnical engineering
|
|---|
| Research Institution | NAGOYA UNIVERSITY |
|---|
Principal Investigator |
ASAOKA Akira NAGOYA UNIV., CIVIL ENG., PROFESSOR, 工学研究科, 教授 (50093175)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
KANEDA Kazuhiko NAGOYA UNIV., CIVIL ENG., ASSISTANT PROFESSOR, 工学研究科, 助手 (30314040)
NODA Toshihiro NAGOYA UNIV., CIVIL ENG., ASSOCIATE PROFESSOR, 工学研究科, 助教授 (80262872)
NAKANO Masaki NAGOYA UNIV., CIVIL ENG., ASSOCIATE PROFESSOR, 工学研究科, 助教授 (00252263)
|
|---|
| Project Period (FY) |
1998 – 1999
|
| Keywords | Siol-water coupling / finite deformation analysis / rate effect / Second compression / Progressive failure / Finite element method |
|---|
| Research Abstract |
In this study, both the rate effect of undrained shear behavior for remoulded normally consolidated clay and 'secondary compression/consolidation' for the structured clay were carried out through the experiment and soil-water coupled analysis with superloading Cam-clay model.
As for the rate effect of undrained shear behavior, the specimen having rectangular cross-section showed higher order failure mode triggered by initial imperfection and had high undrained strength on rapid loading. On the other hand, the specimen showed lower order failure mode due to mode switching by pore water migration and had low undrained strength.
As for secondary compression/delayed compression, under constant load one-dimensionally, the excess pore pressure within the specimen was dissipating during primary consolidation and then, however, the pore pressure generated again due to softening with plastic compression. The pore pressure dissipated again due to plastic hardening from softening and secondary compression occurred.
|
