Analysis of subsurface ground movements induced by EPB shield tunneling in the Bangkok MRT Blue Line Project | |
| Author | Sippawut Tavaranun |
| Call Number | AIT Thesis no.GE-03-15 |
| Subject(s) | Tunneling--Thailand--Bangkok Soil stabilization--Thailand--Bangkok |
| 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-03-15 |
| Abstract | The study presented the analysis of the behaviour of subsurface ground movements due to shield tunnelling in the first Bangkok MRT Blue Line project. Monitoring data at 40 locations were summarized and evaluated with respect to various potential influencing factors and their compared with the predictions given by well-known empirical and numerical methods. The maximum subsurface vertical movements above the tunnel centerline usually occurred in the soft clay layer forward the tunnel with range of 20 mm to 83 mm. Two distinct portions of horizontal movement curves were observed. Above the tunnel roof level the ground along vertical section at horizontal distance of 3.2-6.0 m from tunnel centerline move toward the tunnel at maximum horizontal displacement of 10 mm. But for the section below the tunnel roof level the ground move outward from tunnel at maximum magnitude of 6 mm. The ground movements were summarized with respect to influencing factors. There were no clear correlations between maximum movements with tunnel depth, tunnel spacing between the twin tunnels, even the TBM face pressure. The solution proposed by Loganathan and Poulos (1998)'s method yields the best prediction for analysis of subsurface vertical ground movements among all empirical methods considered. Reasonable agreement between the predicted vertical movement given by 2D FEM PLAXIS and the monitoring filed data were observed. For the case of subsurface horizontal movement, by both PLAXIS and Laganathan and Poulos (1998)'s methods the predictions could not so comparable with the observed data. |
| Year | 2003 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. GE-03-15 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Geotechnical Engineering (GE) |
| Chairperson(s) | Noppadol Phien-wej |
| Examination Committee(s) | Bergado, Dennes T.; Park, Kyung-Ho |
| Scholarship Donor(s) | Royal Thai Government (RTG) |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2004 |