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A platform for research: civil engineering, architecture and urbanism
Modeling Pile Behavior in Large Pile Groups Under Lateral Loading
Large pile groups were examined using a three-dimensional finite-difference based numerical modeling approach. The specific case of a large pile group subject to only translational loading at the groundline was considered. Research efforts focused on local pile-soil interaction using p-y curves as the primary assessment tool and p-multipliers to characterize group effects. Rationalization of a large pile group into a two-pile in-line configuration and a single pile with periodic boundaries was undertaken, representing typical leading and immediately trailing piles, and internal piles, respectively. Factors considered were: (a) soil type; (b) pile type; (c) initial soil stress states; (d) pile head restraint; and (e) pile spacing. Isolated pile models provided a benchmark for both the in-line and periodic models. A total of 30 analyses were completed. Overall, the large pile group study indicated that initial stress state, pile type and pile head restraint resulted in some differences, but these were relatively weak compared with the influence of soil behavior and movement. Marked decreases in lateral resistance for interior piles were attributed to the different stiffness and strength characteristics of the soil models, and effects resulting from the boundary conditions employed.
Modeling Pile Behavior in Large Pile Groups Under Lateral Loading
Large pile groups were examined using a three-dimensional finite-difference based numerical modeling approach. The specific case of a large pile group subject to only translational loading at the groundline was considered. Research efforts focused on local pile-soil interaction using p-y curves as the primary assessment tool and p-multipliers to characterize group effects. Rationalization of a large pile group into a two-pile in-line configuration and a single pile with periodic boundaries was undertaken, representing typical leading and immediately trailing piles, and internal piles, respectively. Factors considered were: (a) soil type; (b) pile type; (c) initial soil stress states; (d) pile head restraint; and (e) pile spacing. Isolated pile models provided a benchmark for both the in-line and periodic models. A total of 30 analyses were completed. Overall, the large pile group study indicated that initial stress state, pile type and pile head restraint resulted in some differences, but these were relatively weak compared with the influence of soil behavior and movement. Marked decreases in lateral resistance for interior piles were attributed to the different stiffness and strength characteristics of the soil models, and effects resulting from the boundary conditions employed.
Modeling Pile Behavior in Large Pile Groups Under Lateral Loading
A. M. Dodds (author) / G. R. Martin (author)
2007
296 pages
Report
No indication
English
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