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原文传递 Vertical Bearing Behavior of Monopod Caisson Foundation in Sandy Soils

题名：	Vertical Bearing Behavior of Monopod Caisson Foundation in Sandy Soils
正文语种：	eng
作者：	Tanmoy Kumar Deb;Baleshwar Singh
作者单位：	Dept. of Civil Engineering JK Lakshmipat Univ. Rajasthan 302026 India;Dept. of Civil Engineering Indian Institute of Technology Guwahati 781039 Assam India
关键词：	Monopod caisson foundation; Numerical analysis; Offshore wind turbine; Vertical capacity; Sandy soil
摘要：	This paper presents the results of numerical investigation on the vertical bearing behavior of monopod caisson foundations embedded in sandy soils and supporting offshore wind turbines. The effects of embedment depth and internal soil plug were investigated. The magnitude of lateral soil deformation at the foundation tip is noted to increase with skirt length and it remains greater in comparison with that of an embedded solid foundation. The internal soil plug is found to have a cushioning effect during the transfer of superstructure load to the soil mass underneath the foundation tip. This leads to a reduction in the end-bearing component of vertical capacity when compared with that of an embedded solid foundation. The failure of the soil at the tip resembles the shape of an inverted parabola in the case of caisson foundation and that of an upright parabola for the embedded solid foundation. Based on the results, predictive expressions have been proposed to determine the ultimate vertical bearing capacity of the caisson foundation and its settlement for the range of geometry and superstructure load considered in the study.
出版年：	2021
期刊名称：	Journal of Waterway, Port, Coastal and Ocean Engineering
卷：	147
期：	4