Dynamic lateral response of suction caissons

Abstract

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Dynamic Impedance of the Wide-Shallow Bucket Foundation for Offshore Wind Turbine Using Coupled Finite–Infinite Element Method

“…It is detected that the increase in the coupling damping coefficient becomes more marked as the slenderness ratio increases. These results show that the effect of the horizontal vibration transmitted to the strength of surrounding soil with the increasing of the diameter with respect to the coupling component [26]. Figure 11 depicts the influence of the variation of the skirt thickness on the dynamic response of the WSBF (case 3,11-13, listed in Table 1).…”

“…Modeling considerations-to better understand the dynamic impedances of the WSBF, a series of three-dimensional FE-IFE models were constructed to analyze the dynamic responses. As mentioned in references [26], three hypotheses should be clarified in the numerical model: (1) The rigid WSBF, (2) constant damping ratio of soil, (3) perfect bonding at the soil-foundation interface during the analysis.…”

“…Harte [23] considered the foundation of a wind turbine as a rigid gravity based foundation which is connected to the surrounding soil to obtain complex impedance using cone model, and investigated the influences of the interaction between the foundation and the soil on the dynamic response. Latini et al [24][25][26] studied the dynamic performances of floating piles and suction caissons (Figure 2b and Figure 2c) by a three-dimensional finite element model in frequency domain, exploring groups of dimensionless parameters related to the soil and foundation and their effects on the dynamic response of foundation considered. Gerolymos et al [27,28] developed Winkler model to calculate the static and dynamic responses of caisson foundations (Figure 2c) accounting for nonlinear interface through spring and dashpot, and this nonlinear Winkler-spring method was implemented in a new finite difference time-domain code, NL-CAISSON [29].…”

Dynamic Behavior of an Embedded Foundation under Horizontal Vibration in a Poroelastic Half-Space

“…The analytical solution of the dynamic response of surface foundation in a poroelastic medium under horizontal, vertical, and torsional vibration is widely studied by many researchers [1][2][3]. Generally, the foundation is embedded in a certain depth and the horizontal force from wind, earthquake ground motion, and mechanical vibrations that governs the dynamic response of embedded foundations.…”

“…Ahmad et al [5] presented an extensive investigation on the horizontal impedance of square footing in layered soil using a boundary element method. Latini [1] investigated the dynamic response of suction caissons by 3D element models in the frequency domain. Wang and Rajapakse [6] studied the dynamic response of rigid strip footing foundations using the indirect boundary integral equation method.…”