Piled foundation responses to soft ground tunneling in Bangkok subsoils | |
| Author | Paverean Mudcharoen |
| Call Number | AIT Thesis no.GE-09-04 |
| Subject(s) | Tunneling--Thailand--Bangkok Piling (Civil engineering) Subsoils--Thailand--Bangkok |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Geotechnical and Geoenvironmental Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. GE-09-04 |
| Abstract | Tunnel constructions in Bangkok will inevitably affect behavior of overlying or adjacent piled foundation. Tunnelling will induce ground movement, resulting in an increase of pile axial force and bending moment and building distortion. This paper presents three-dimensional (3D) finite element (FE) modeling of tunnel constructed in Bangkok subsoil condition. The numerical modeling considers the effects of single pile with respect to the tunnel locations on the pile behavior, varying distance from the tunneling centerline, tunnel axis level corresponding to pile tip level, pile length and advancing tunnel on single pile. Results are presents that tunneling-induced ground movement will impose axial and lateral stress on existing pile foundations. Moreover, the 3D analyses have modeled varying tunnel support pressure applied at tunnel face and varying grout pressure. It has been found that a higher face pressure lead to smaller surface settlement and the influencing of the grout pressure in the lining installation is negligible on pile response. The 3D analyses present the effect on pile ground response for group of 4 piles group and 9 piles group were studied. Finally, the 3D analyses was carried out on selected case records of which results demonstrates that boundary distance of the model from the tunnel being simulated has a proposed effect on surface settlement but not so on stress in piles. The resulting can explain as that in different boundary and the symmetric models present small different in pile stresses but it has important to surface settlement |
| Year | 2010 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. GE-09-04 |
| 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) | Bergado, Dennes T.;Park, Kyung Ho; |
| Scholarship Donor(s) | RTG Fellowship; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2009 |