FACTORS AFFECTING FIELD SETTLEMENT EVALUATION OF PREFABRICATED VERTICAL DRAINS PERFORMANCE IN SOFT BANGKOK CLAY BY ASAOKA AND HYPERBOLIC METHODS
Factors affecting field settlement evaluation of PVD Performance by Asoka and Hyperbolic Methods
DOI:
https://doi.org/10.55766/sujst6638Keywords:
Asaoka Method, Field Settlement, Hyperbolic Method, Prefabricated Vertical Drains, Soft Bangkok ClayAbstract
The study highlights the importance of these factors in field settlement evaluation and back-calculating the horizontal drainage consolidation coefficient in Bangkok clay. Longer evaluation periods induce higher ultimate settlement and lower consolidation degrees with the Asaoka method, while the Hyperbolic method predicts constant values. The coefficient of consolidation in horizontal drainage back-analyzed by the Asaoka method decreases with longer evaluation periods but is similar to CRS-R at the final stress level. Both methods’ predicted settlement versus time curves agree well with field curves, especially for longer evaluation periods. Therefore, the paper recommends adopting the settlement versus time curves predicted by both methods for their simplicity and proficiency in practice. These findings provide valuable insights for evaluating the degree of consolidation and improving soft clay using prefabricated vertical drains, especially in areas with similar soil conditions.
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