Deformation of sand compaction pile (SCP) ground subjected to backfilled caisson loading | |
| Author | Meer, Mohammad Harunur |
| Call Number | AIT Thesis no. GE-01-13 |
| Subject(s) | Sand Compacting |
| Note | A thesis submitted in partial fulfillment to the requirements for the degree of Master of Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. GE-01-13 |
| Abstract | In designing structures, especially the structures on soft clay ground; deformation of the foundation ground may sometimes appear as a vital factor for rational design. The deformation and stiffness of clay by SCP was investigated by a series of ten-oedometer test for different replacement ratios (0%, 30%, 50%, 70% & 100%) for disturbed and remolded condition. The test was repeated for single larger diameter pile (single pile) also. The clay used in this research was Bangkok clay from AIT campus at about three-meter depth and the Toyoura sand was used for sand compaction piles. It was observed that the settlement of the improved ground with SCP the low area ratio gives higher settlement then that of the higher area ratio. It is also observed that the compressibility of the SCP improved ground is higher for remolded condition then undisturbed conditions. 1-D assumption was applied to find the stress concentration ratio. It was observed that the stress concentration ratio was so higher than the values used during the design of SCP. Attempt has been taken to evaluate the strength characteristics of the SCP with area ratios. It was observed that the stiffness increases for remolded condition of the improved ground with increase of stress and area ratio. In order to know the mechanical behavior inside the SCP ground axi-symmetric analysis has been done. The stress-strain curve of Bangkok clay (Khan, 1999), and the stressstrain curve of Toyoura sand (Tatsuoka, 1991c) were used to get information about the Bangkok clay and Toyoura sand. It was observed that there was bulging inside the SCP and it increases with the increment applied loads. |
| Year | 2002 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. GE-01-13 |
| 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) | Bergado, Dennes T.;Park, Kyung-Ho; |
| Scholarship Donor(s) | The Government of Japan; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2002 |