Conference proceeding
Behavior and Capacity of Drilled Shafts in Sand Subjected to Lateral and Torsional Loading
Geotechnical Frontiers 2025: Foundations, Retaining Structures, and Geosynthetics, v 364, pp 164-173
27 Feb 2025
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Analysis of drilled shafts under axial and lateral loading is commonly done in geotechnical engineering practice, and available methodologies are considered reasonable, accurate, and reliable. In contrast, the analysis of drilled shafts subjected to general loading with a combination of lateral loading, bending moment, torsional loading, and axial loading is considered a complex loading condition where the state of practice has ample room for improvement. This paper is divided into three parts. The first part summarizes a state-of-practice study carried out by the second author that involved reviewing the design practice for this complex loading at 12 coastal US Departments of Transportation (DOTs). The second part summarizes experimental studies of piles under complex loading. The third part compares select results from these experiments with analysis using the software FB-Multipier that allows modeling piles under combined loading and capturing the soil reaction through decoupled non-linear springs to represent the different soil reaction components such as axial skin friction (t-z springs), lateral soil reaction resultant (p-y curves), and circumferential/torsional skin friction (T-. springs). The computed loaddisplacement curves using this approach are compared to published experimental results from laboratory tests. The results presented in this paper indicate that the decoupled spring-based model was not adequate or accurate enough to predict the behavior of drilled shafts under general loading. This highlights the need for future research work in this area, including the development of practical and accurate coupled models for piles under general loading.
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Details
- Title
- Behavior and Capacity of Drilled Shafts in Sand Subjected to Lateral and Torsional Loading
- Creators
- Matias R. Frediani - Drexel UniversityMiguel A. Pando - Drexel University
- Contributors
- M S Beauregard (Editor)A S Budge (Editor)
- Publication Details
- Geotechnical Frontiers 2025: Foundations, Retaining Structures, and Geosynthetics, v 364, pp 164-173
- Series
- Geotechnical Special Publication
- Publisher
- American Society of Civil Engineers
- Number of pages
- 10
- Resource Type
- Conference proceeding
- Language
- English
- Academic Unit
- Civil, Architectural, and Environmental Engineering
- Web of Science ID
- WOS:001586186700017
- Other Identifier
- 991022135742904721
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Engineering, Civil
- Engineering, Environmental
- Engineering, Geological
- Materials Science, Multidisciplinary