| Author | Pinit Phamvan |
| Call Number | AIT Thesis no. GT-83-36 |
| Subject(s) | Piling (Civil engineering)--Testing
|
| Note | A thesis submitted m partial fulfillment of the requirement for the degree of Master of Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Abstract | Possibility of conventional design method of sheet piling
in Bangkok Clay by using in-situ strength was determined. Sheet pile failure cases or 3 sites in Bangkok area were studied.
The first site was at Ratburana area. The 12 m long
cantilever sheet pile for excavation pit failed during
construction . The second site was at Wireless Road. it was
the anchorage sheet pile which was anchored with another sheet pile of shorter length. The last bite was at Prachachuen . The king pile type with anchorage for retaining the fill
collapsed . In all these case, the situation can be considered
as undrained condition.
Undrained shear strengths obtained from CKoU-TC and CKoU-TE were assumed to roughly represent undrained strength of soil in actives and passive region of sheet pile wall.
using NSP concept to Bangkok Clay, as established by previous and this research, and the correlations between in-situ strengths (FV & DC) tests and strengths from anisotropic ally consolidated undrained triaxial compression and extension tests at Ratburana Site, it was possible to adopt FV and DC strengths for calculating active and passive pressure in the design of sheet pile on Bangkok Clay.
The correlations between FV & DC strength and CKoU-TC & CKoU-TE of samples taken from Ratburana Site yielded good linear relationships. Reanalyze of sheet piles from these failure cases indicate the suitable uses of conventional methods of designing the sheet pile using strengths from anisotropic ally consolidated undrained triaxial compression and extension tests. This led to the conclusion that the conventional design method of cantilever and anchorage sheet pile could be applied to Bangkok Clay, provide
that suitable Factor of Safety was adopted.
Furthermore, upon having the correlations between field vane strengths and strengths of compression and extension triaxial tests, the design of sheet pile using in-situ strength test can be developed. Using on field vane without corrections may lead to unconservative design, considered at the Factor of Safety of 1.5.
In all three cases, it was found that
(i) At Raturana Site: The failure of sheet pile was caused by using insufficient length of sheet pile.
(ii) At Wireless Road Site: The failure was caused by insufficient structure capacity of tie-rod, and the length of sheet pile was too short to behave like the cantilever sheet pile.
(iii) At Prachachuen Site: The failure was caused by the problem of overall slope stability, and insufficient anchorage capacity. |
| Year | 1984 |
| Type | Thesis |
| School | School of Engineering and Technology |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Geotechnical and Transportation Engineering (GT) |
| Chairperson(s) | Surachat Sambhanpharaksa
|
| Examination Committee(s) | Yamada, Yasuo ; Rantucci, Giovanni
|
| Scholarship Donor(s) | The Government of the Federal
Republic of Germany, DAAD
|
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1984 |