| Author | Yeng, Hooi Kah |
| Call Number | AIT Thesis no.GE-02-16 |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of
Master of Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. GE-02-16 |
| Abstract | This thesis compiled and interpreted the observed lateral wall movement and ground
surface settlement of 16 station excavations of the Bangkok MRT ISP Blue Line project to
examine the perfo1mance of the station box excavations in Bangkok subsoil. Predictions of
lateral ground movement using PLAXIS Version 7 were performed by plane strain effective
and total stress analysis in undrained conditions with the Mohr-Coulomb model. Predictions
were conducted using strength and stiffness parameters extracted and calculated from
boreholes adjacent to the specific sections and averaged parameters as used in the design.
Three types of deflected shapes of lateral wall movement were observed at certain ranges of
excavation depths, namely cantilever mode, braced excavation modes in soft and stiff soil. The
maximum observed lateral wall movement was 47.4 mm and 42.7 mm, while the maximum
ground surface settlement was 57.7 mm and 75.14 mm, at stations in South and North
Contracts respectively. Variation in soil profile along a station box affected the resulting
ground movement. Hence, predictions using parameters calculated from specific boreholes
nearest to the sections gave better results than predictions using averaged design parameters.
Predictions using total stress analysis did not differ much from predictions using effective
stress analysis. |
| Year | 2003 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. GE-02-16 |
| 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) | Noppadol Phien-wej; |
| Examination Committee(s) | Takemura, Jiro;Glawe, Ulrich; |
| Scholarship Donor(s) | Lee Foundation;Asian Institute of Technology-Partial Scholarship; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2003 |