Md. Mohshin Ali*, Md. Mahi Abrar, Md. Abiduzzaman, and Sonjoy Deb Nath
Abstract: Pile foundations are regarded as a highly sophisticated domain within the discipline of geotechnical engineering and are progressively gaining recognition as a cost-effective foundation technique for skyscrapers. Traditional empirical methods, CPT-based analysis and pile load tests are used to predict the load-displacement response and load transfer mechanisms along the length of the pile. However, these methods may not be suitable for piles and soil conditions different from those for which the methods were developed. Under such conditions, numerical analysis using soil properties measured from in situ soil tests can be an effective approach to obtain shear stress along the pile axis (t) and pile displacement (z) along the pile (t-z curves) for predicting pile movements under axial load. This paper describes the numerical analysis, presents the soil–pile interface properties including allowable capacity, axial force, vertical stress, and settlement behavior of bored piles embedded in silty clay soils and highlights the benefits of the proposed simple and time-efficient numerical approach. The numerical modeling was developed in AllPile 6.5.0V software to evaluate the performance of bored piles embedded in silty clay soils that were characterized by SPT. The results of the analysis showed that numerical analysis can better predict the response of soil-piles compared to empirical and/or theoretical analysis to optimize pile design and construction.
Keywords: Bored Pile, AllPile, soil-pile interface, t-z curve, SPT
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