Helical pile foundations are a new foundation type for offshore wind power applications with high bearing capacity and good recovery that can be quickly easily constructed. In this study, the finite element method was used to simulate characteristics of helical after installation. For simulations, blade, deeply buried in single layer sand, selected. Through numerical vertical screw an ordinary ...

Bedding samples were collected twice from commercial dairy free-stall facilities that used recycled sand and clean sand in both the summer and winter. Collection began on the day sand was taken from the pile (d 0) and placed in the free stalls, and continued for 5 to 7 additional days. The number of colonies per gram of bedding of gram-negative bacteria, coliforms, Streptococcus spp., and Klebs...

Considering viscoelastic saturated soil, The transient dynamic response of an elastic pile is studied. The pile-soil system is divided into thin layers, the control equations of the soil are solved respectively by using Laplace transform. Considering the mixed boundary-value conditions at the interface of pile and soil, expression is derived to describe the relationship between the inner force ...

Abstract Pile foundations are adopted if a soil of low bearing capacity extends to considerable depth or the structure is heavy settlement due large. It transfers load strong, stable stratum soil. The behaviour in slope and piles embedded it an elaborated soil-structure interaction problem. This paper presents results experimental investigations on single pile subjected lateral by varying relat...

Recently, G. C. Van Orden, J. G. Holden, and M. T. Turvey (2003) proposed to abandon the conventional framework of cognitive psychology in favor of the framework of nonlinear dynamical systems theory. Van Orden et al. presented evidence that "purposive behavior originates in self-organized criticality" (p. 333). Here, the authors show that Van Orden et al.'s analyses do not test their hypothese...

One of the main problems associated with generation wind energy in offshore platforms is analysis behavior soil when pile driven into seabed. Nowadays, due to large dimensions foundations (hollow steel piles up 8 m diameter and 15–20 cm thickness), there are no scale studies carried out that analyze mechanical deformational where as well material supports motor. This paper presents results obta...