Ground deformation associated with deep excavation in soft clay with base improvement | |
| Author | Hirose, Eiju |
| Call Number | AIT Thesis no.GE-02-20 |
| Subject(s) | Clay soils Walls Excavation |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Masters of Science, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. GE-02-20 |
| Abstract | A numerical simulation of propped wall excavation in normally consolidated clay was carried out in this study. The excavation considered in this study is prototype scale of centrifuge test excavation. A finite element program DACSAR (Deformation Analysis Considering Stress Anisotropy and Reorientation) that implements the elasto-viscoplastic model proposed by Sekiguchi and Ohta (1977) was applied into numerical analysis. The results of computation were found in reasonable agreement with the stress condition in the prototype scale centrifuge test results. However, there was difficulty to simulate well in the magnitude of deformations, since the actual non-linear deformations of soil could not be simulated well. It was well simulated that effect of base improvement, effect of number of strut and trend of deformations. From the result, it was found that the effect of the embedment into the firm layer can be neglected by using base improvement and the length of sheet pile wall can be shorten, since the most of the passive resistance was generated by the soil modification. It was confirmed that the attachment condition between sheet pile wall and improvement body significantly affected the deformations in excavation. |
| Year | 2003 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. GE-02-20 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Geotechnical Engineering (GE) |
| Chairperson(s) | Takemura, Jiro; |
| Examination Committee(s) | Noppadol Phien-wej;Kyung-Ho Park; |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 2003 |