Transient analysis of monopile foundations partially embedded in liquefied soil

被引：15

作者：

Barari, Amin ^{[1
]}

Bayat, Mehdi ^{[1
]}

Saadati, Meysam ^{[2
]}

Ibsen, Lars Bo ^{[1
]}

Vabbersgaard, Lars Andersen ^{[1
]}

机构：

[1] Aalborg Univ, Dept Civil Engn, DK-9000 Aalborg, Denmark

[2] Babol Univ Technol, Dept Civil Engn, Babol Sar, Iran

来源：

GEOMECHANICS AND ENGINEERING | 2015年 / 8卷 / 02期

关键词：

offshore monopile; liquefaction; inertia effect; dynamic response; numerical analysis; BUCKET FOUNDATIONS; LATERAL RESISTANCE; PILES; BEHAVIOR; FAILURE;

D O I：

10.12989/gae.2015.8.2.257

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

In this study, the authors present a coupled fluid-structures-seabed interaction analysis of a monopile type of wind turbine foundations in liquefiable soils. A two dimensional analysis is performed with a nonlinear stiffness degradation model incorporated in the finite difference program Fast Lagrangian Analysis of Continua (FLAC), which captured the fundamental mechanisms of the monopiles in saturated granular soil. The effects of inertia and the kinematic flow of soil are investigated separately, to highlight the importance of considering the combined effect of these phenomena on the seismic design of offshore monopiles. Different seismic loads, such as those experienced in the Kobe, Santa Cruz, Loma Prieta, Kocaeli, and Morgan Hill earthquakes, are analyzed. The pore water pressure development, relative displacements, soil skeleton deformation and monopile bending moment are obtained for different predominant frequencies and peak accelerations. The findings are verified with results in the liter.

引用

页码：257 / 282

页数：26

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