TY  - BOOK
AU  - Suchada Pimpasugdi
AU  - S. Sambhandharaksa, 
AU  - Bergado,Dennes T.
AU  - Balasubramaniam,A.S.
AU  - Noppadol Phien-Wej,
ED  - The Government of Australia, 
TI  - Performance evaluation of bored, driven and auger press piles in Bangkok subsoils
T2  - Thesis
PY  - 1989///
CY  - Bangkok
PB  - Asian Institute of Technology
KW  - Piling (Civil engineering)
N1  - A thesis submitted in partial fulfillment of the requirements  for the degree of Master of Engineering, School of Engineering and Technology; Thesis (M.Eng.) - Asian Institute of Technology, 1989
N2  - The performances of bored, driven and auger press pile  in Bangkok subsoils are evaluated by comparing their skin  frictions of piles embedded in clay, end- b earing resistance  of piles having tips in sand and the settlements based on the  soil-pile Elastic ' s Modulus <Es) estimated by using POULOS &  DAVIS <1980)' s method. The study shows that the developed  skin friction in stiff clay of all pile types is not much  different and the developed end-bearing resistance of the  piles having tips in sand, in this study, vary depending upon  the pile construction type s . The end - bearing capacity of  driven pile yields the value 2 -3 times higher than that of  bored pile. While the " equivalent" end-bearing resistance of  the auger press pile is nearly equal to that of bored pile.  The skin friction of bored pile proposed by MEYERHOF (1976)  is used to calculated the shaft resistance in sand of both  the bored and auger pile and the Es values of bored piles  penetrated both in clay and sand are very high due to the  effect of their large diameters. At the same working load, Es  of driven piles both penetrat e d in clay and sand are higher  than that of auger pile . The auger press pile settlement is  larger than that of driven pile and bored pile when the pile  dimensions are the same . Es also appears to be dependent more  on the size and the construction technique of the pile than  the pile tip's material. This conclusion is from data of pile  having approximately the same depth range C 25 to 35 m> .  The study of the performance of the auger press pile i s  concentrated on the consequence of the construction  technique. Auger press piling technique performed in clay  seems to yield less effect on the pile capacity, compared to  that performed in the sand . But its effect on settlement  behaviour is clearly shown for both piling in c lay and sand.  The empirical soil mechanics method for the estimation  of the capacities of the three pile types is proposed . Good  correlations are obtained in the predicted failure loads  compared to the capacities obtained from loading tests
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ER  -