Under-reamed bored piles in Bangkok clay | |
| Author | Hanifah, H. M. Abdul Aziz bin K. M. |
| Call Number | AIT Thesis no.GT-87-02 |
| Subject(s) | Soils--Thailand--Bangkok--Testing Piling (Civil engineering) |
| 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. GT-87-02 |
| Abstract | This thesis deals with C1> the development of an under reamer and the construction of under-reamed bored piles in the weathered, soft and stiff clay layers of Bangkok subsoil, C2> load-testing the test piles to failure and (3) to check the increase in ultimate load of the under-reamed piles in the different layers. The results show that successful under-reams can be constructed in all the clay layers with the under-reamer developed by the author. In the soft clay, the end-bearing load is increased by 3 times when the base diameter is enlarged to 1. 7 times the shaft diameter. In the weathered and stiff clay layers, the increase is 3-6 times when the base is enlarged to 2-2. 2 times the shaft diameter. The contribution of end- bearing to the ultimate carrying capacity is increased from 10% to 24% in the soft clay and from 18% to 42-60% in the stiff clay. The total stress method and the Dutch Cone test can be used to predict the ultimate carrying capacity of straight and under-reamed bored piles in Bangkok Clay. The results from the under-reamed bored piles are compared with the corresponding results from the granular piles. The under-reamed bored piles thus have great potentials especially in embankment road designs and light structures. |
| Year | 1988 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. GT-87-02 |
| 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) | Balasubramaniam, A.S. ;Rantucci, Giovanni; |
| Examination Committee(s) | Noppadol Phienwej ; |
| Scholarship Donor(s) | US-ASEAN ; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1988 |