Performance of Precast Piles in Sandy Soils under Different Installation Methods in Thailand
Publication: Geo-Congress 2022
ABSTRACT
Majority of Thai oil and gas facilities are located along the eastern coastal provinces. In a recent oil and gas project, over 10,000 precast piles were installed by conventional driving and jack-in methods. The jack-in piling method was adopted in areas where new facilities were built near existing plants with stringent noise and vibration criteria. Extensive soil investigation program was executed, providing the necessary geotechnical data for subsoil characterization and foundation design. Preliminary pile load tests were conducted to establish the pile driving criteria for driven piles and the termination criteria for jack-in piles. For driven piles, soil-setup was investigated showing a linear relationship with pile length. As for jack-in piles, the termination criteria were determined by considering appropriate jacking force with sufficient holding time, meeting acceptable efficiency and performance. From the load test results, shorter jack-in piles had achieved required ultimate capacities with greater skin friction during installation.
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Geo-Congress 2022
Pages: 40 - 49
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Published online: Mar 17, 2022
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