TY - JOUR ID - 147573 TI - Application of Numerical Method in Assessing the Variations in Pile Group Efficiency under Different Circumstances JO - Computational Engineering and Physical Modeling JA - CEPM LA - en SN - AU - Asif, Taskid Hossain AU - Islam, Shafiqul AU - Basak, Aditi AU - Shahriar, Fahim AU - Rahman, S M Shazeebur AD - M.Sc. Student, Lecturer, Department of Civil Engineering, Ahsanullah University of Science and Technology (AUST), Dhaka, Bangladesh AD - M.Sc., Assistant Professor, Department of Civil Engineering, Ahsanullah University of Science and Technology (AUST), Dhaka, Bangladesh AD - B.Sc., Design Engineer, JPZ Consulting Ltd. Dhaka, Bangladesh AD - B.Sc., Quality Check Engineer, SMCC-ITD JV, Dhaka, Bangladesh AD - M.Sc., Lecturer, Department of Civil Engineering, Ahsanullah University of Science and Technology (AUST), Dhaka, Bangladesh Y1 - 2022 PY - 2022 VL - 5 IS - 1 SP - 50 EP - 68 KW - Pile group KW - Plaxis 3D KW - Efficiency KW - Sandy Soil KW - Pile Spacing KW - Pile Diameter DO - 10.22115/cepm.2022.324662.1200 N2 - Rapid urbanization creates a demand to expand the cities where using pile foundation became a recurrent practice. To ensure sustainability of projects pile load tests are important but may not be always feasible in terms of costing, on-site constrains etc. In this circumstance numerical analysis is a good alternate to estimate precise pile load capacity rather than conventional conservative approaches. This research illustrates the pile group efficiency fluctuation due to pile diameter, spacing, pile number and orientation in prescribed sandy soils. Using the conventional method the individual pile capacities are calculated for a constant depth with variable diameters and soil profiles. For simulating the piles, geometric models of sandy soils with sufficient boundaries are generated in PLAXIS 3D FOUNDATION software where the parameters of pile and soil components are considered as per predetermined values from reliable references. The analysis results have thoroughly been scrutinized by plotting several graphs at different aspects. The outcomes indicate that the conventional pile spacing i.e. 2.5D to 3.5D has an insignificant effect on pile group efficiency, irrespective to pile diameter and soil type. It also exhibits that the increment of pile number significantly decreases pile group efficiency for diameters of 600mm, 800mm, 1000mm and 1200mm in sandy soils. With a few exceptions as the diameter of the pile increases, the group efficiency decreases. The arrangement of piles in group has minor impact on pile group efficiency which enhances onsite flexibility. It is expected that these outcomes will facilitate the practicing engineers for efficient solutions. UR - https://www.jcepm.com/article_147573.html L1 - https://www.jcepm.com/article_147573_517f9e0b0995d3a92c7644675cfc7870.pdf ER -