Case studies of slope failure for embankment using deep cement mixing piles | |
| Author | Akhter, Jobayda |
| Call Number | AIT Thesis no.GE-20-08 |
| Subject(s) | Embankment--Thailand Geotechnical engineering--Thailand Soil-cement construction Clay--Thailand |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Geotechnical and Earth Resources Engineering |
| Publisher | Asian Institute of Technology |
| Abstract | This paper presents parameters affecting the lateral movement, the factor of safety (FS), and differential settlement against the excavated canal slope with embankment supported by concrete pile with slab and DCM pile using FEM (PLAXIS 2D). This paper studies two case histories: a) review the causes of slope failure of the Suvarnabhumi Drainage Canal Project during construction and calibrate the model with the actual field distress situation to obtain the soil stiffness parameters, b) to select appropriate soil stiffness parameters for validating the model of the Bang Ban – Bang Sai Project, the Eu,50 value from triaxial compression test is compared with the Eu,50 value of Bangkok soft clay of the Suvarnabhumi Drainage Canal Project site which is back analyzed to compare with the actual field distress condition and also with the Eu,50 value of Bangkok soft clay from previous researcher's data and lesson learning from the Suvarnabhumi Drainage Canal Project regarding the failure pattern, this paper reviews the design parameters of the Bang Ban – Bang Sai project by using FEM (PLAXIS 2D). A parametric study is then conducted to investigate the influencing parameters that affect the lateral movement of stabilized canal slope using DCM piles with embankment supported with concrete pile & slab during construction and identify the influencing parameter that affects the differential settlement of the embankment in the long-term condition. The numerical result shows that the concrete piles with slab instead of DCM piles without slab below the high embankment; the water level of the newly excavated canal before starting the embankment construction; slope gradient of the canal; length of the concrete pile below the embankment; and pattern of DCM piles on the slope are the five most important design parameters. Finally, design recommendations are made for future similar nature projects to reduce lateral movement along the excavated slopes and differential settlement of the piles below the embankment. |
| Year | 2021 |
| 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) | Chao, Kuo Chieh; |
| Examination Committee(s) | Avirut Putiwongrak; |
| Scholarship Donor(s) | Local Government Engineering Department, (LGED), Bangladesh; |
| Degree | Thesis (M. Eng.) - Asian Institute of Technology, 2021 |