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Multifaceted Bioinspiration for Improving the Shaft Resistance of Deep Foundations

Journal of Bionic Engineering 2020年第5期17卷 1059-1074页

作者： Seyed Ali Aleali paola bandini Craig Michael Newtson Center for Bio-mediated and Bio-inspired Geotechnics Department of Civil EngineeringNew Mexico State UniversityLas CrucesNew Mexico 88003-8001USA

This paper describes the bioinspiration process to derive design concepts for new deep foundation systems that have greater axial capacity per unit volume of pile material compared to conventional deep *** study led to bioinspired ideas that provide greater load capacity by increasing the pile shaft *** bioinspiration approach used problem-solving strategies to define the problem and transfer strategies from biology to geotechnical *** bioinspiration considered the load transfer mechanism of hydroskeletons and the anchorage of the earthworm,razor clam,kelp,and lateral roots of *** biostrategies that were transferred to the engineering domain included a flexible but incompressible core,passive behaviour against external loading,a longitudinally split shell that allows expansion for anchorage,and lateral root-type or setae-type anchoring *** concepts of three bioinspired deep foundation systems were proposed and *** advantage of this approach was illustrated with two examples of the new laterally expansive pile in drained sand under axial *** finite element analysis of these examples showed that the new laterally expansive pile can provide considerably greater load capacity compared to a conventional cylindrical pile due to the increased lateral confining pressure developed along the expanded pile core.

关键词： bioinspiration expansion anchorage deep foundation pile capacity frictional resistance

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