| Author | Wang, Guangya |
| Call Number | AIT Thesis no. GE-98-23 |
| Subject(s) | Excavation--Thailand--Bangkok
|
| Note | A thesis submitted in partial fufillment of the requirements for the degree of Master of
Engineering, School of Civil Engineering |
| Publisher | Asian Institute of Technology |
| Abstract | This study focuses on the braced deep excavation in metropolitan Bangkok
metropolitan using finite element program. Elastic-perfectly plastic Mohr-Coulomb soil
model was adopted to simulate the soil behaviors involved in analysis. Firstly, Bangkok
Subsoil profile is simplified and the associated soil properties were determined.
Secondly, reference case of deep excavation were designed and modeled. Factors
affecting the behavior of braced deep excavation were studied, which include: (1) wall
stiffness; (2) strut (steel and concrete floor slab floor) stiffness; (3) horizontal spacing of
strut; (4) vertical spacing of strut; (5) unsupported cantilever depth; (6) strut preloading;
(7) friction angle of clay layers; (8) stiffness of clay layers.
A series of influence charts obtained from numerical calculation are plotted and
employed to estimate the maximum wall movement, maximum ground settlements,
maximum bending moment, maximum shear force in deep excavation in Bangkok. 25
cases of deep excavation in metropolitan Bangkok were collected, compiled and
analyzed. Estimations of maximum lateral wall movement of 20 cases, maximum ground
settlement of 7 cases, maximum bending moment of 11 cases and maximum shear force
of 4 cases of deep excavation projects have been performed in this study. Comparisons
are also made for the of influence chart estimation, FEM prediction and field observation.
It is shown that the estimation by using established influence chart are acceptable in the
preliminary prediction analysis of deep excavation. |
| Year | 1999 |
| Type | Thesis |
| School | School of Civil Engineering |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Geotechnical Engineering (GE) |
| Chairperson(s) | Der Guey, Lin;Noppadol Phien-wej; |
| Examination Committee(s) | Balasubramaniam, A. S.;Otsu, Hiroyasu; |
| Scholarship Donor(s) | The Government of Japan; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1999 |