| Project/Area Number |
18360227
|
|---|
| 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 University, Graduate School of Engineering, Professor (50093175)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
NAKANO Masaki Nagoya University, Graduate School of Engineering, Professor (00252263)
YAMADA Eiji Nagoya University, Graduate School of Engineering, Assistant Professor (00293647)
NODA Toshihiro Nagoya University, Graduate School of Engineering, Professor (80262872)
NAKAI Kentaro Nagoya University, Graduate School of Engineering, Assistant Professor (60402484)
|
|---|
| Project Period (FY) |
2006 – 2007
|
| Project Status |
Completed (Fiscal Year 2007)
|
| Budget Amount *help |
¥17,350,000 (Direct Cost: ¥15,400,000、Indirect Cost: ¥1,950,000)
Fiscal Year 2007: ¥8,450,000 (Direct Cost: ¥6,500,000、Indirect Cost: ¥1,950,000)
Fiscal Year 2006: ¥8,900,000 (Direct Cost: ¥8,900,000)
|
|---|
| Keywords | naturally deposited ground / deformation analysis / elasto-plastic / soil property / soil skeleton structure / intermediate soil / clay / sand / 自然堆積地震 |
|---|
| Research Abstract |
1) Evaluation of optimum condition of remolded samples for the determination of the elasto-plastic parameters.
A optimum water content for making remolded clay is its liquid limit.
2) Determination of soil properties of naturally deposited clay and sand.
Soil properties of naturally deposited clay and sand can be estimated by simulating a series of process which contain soil sampling, setting in the apparatus, and laboratory testing.
3) Estimation of deformation and failure of a test embankment on unusual soil ground.
Research result 2) can be applied to unusual soil. The predictive simulation of circular-slip failure process of a test embankment on unusual soil ground was successful.
4) Prediction of large delayed consolidation of soft clay due to embankment loading.
The clay of foundation, which exhibits a long-term large settlement beyond the conventional prediction, can have sensitivity ratio of more than 8.0 and the compression index ratio Cc/Ccr, more than 1.5. The occurrence of in-situ delayed consolidation of clay foundation in Nakajo can be described by taking the sample disturbance into consideration with the Schmertmann's method.
5) Improvement of reclaimed ground with intermediate soils by cavity expansion due to sand piles.
Research result 2) can be also applied to intermediate soil. The manmade island is highly structured and heavily overconsolidated before improvement. The soil improvement makes the ground less structured and normally consolidated.
|
