| Author | Tseng, Cheng-tsung |
| Call Number | AIT Thesis no.GE-99-02 |
| Subject(s) | Tunneling--Thailand--Bangkok
|
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Civil Engineering |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. GE-99-02 |
| Abstract | The main objective of the study is to established a numerical procedure for 3- Dimensional (3-D) analysis of Earth Pressure Balance (EPB) shield tunnelling in Bangkok subsoil. According to the field instrumentation data of (RE-5T-06) project of the Metropolitan Rapid Transit Authority (MRTA), a numerical simulation procedure is proposed by using finite difference program, FLAC30 . In 3-D analysis, a series of investigations were also performed on the convergence of numerical solution, boundary effect, material model and ground water table. Eventually, the proposed numerical simulation procedure was then applied to the analysis of (G-BC-5C) project of the Metropolitan Waterworks Authority (MWA) and verified by the comparison of settlement trough between numerical results (2-D and 3-D analysis) and field measurement. From numerical investigation, it is found that the tail void closure and the stiffness of backfill grouting material are the most sensitive parameters in ground movement calculation. For boundary effect of geometry model, the numerical results of longitudinal settlement only show slightly different in the case of maximum longitudinal length for analysis, Ymax = 50 m and 100 m. Meanwhile, for economic computation time, the element size of 3 m in longitudinal direction (advancing direction) is the maximum tolerable value for the acceptable numerical solution for a 6 m long of shield machine. |
| Year | 2000 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. GE-99-02 |
| Type | Thesis |
| School | School of Civil Engineering |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Geotechnical Engineering (GE) |
| Chairperson(s) | Lin, Der-Guey;Noppadol Phien-wej; |
| Examination Committee(s) | Balasubramaniam, A. S.;Bergado, Dennes T.; |
| Scholarship Donor(s) | Taiwan Provincial Government; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2000 |