Effects of soil–foundation–structure interaction on seismic structural response via robust Monte Carlo simulation

Moghaddasi, M.; Cubrinovski, Misko; Chase, J. Geoffrey; Pampanin, Stefano; Carr, Athol J.

doi:10.1016/j.engstruct.2011.01.011

Cited by 26 publications

(9 citation statements)

References 24 publications

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“…They reported that as the shear wave velocity decreases, which means softer soils, the total displacement of the nacelle increases. This detrimental effect also has been shown in former studies for tall slender structures . It is also stated that for softer soils there is a corresponding drop in frequency at which the base shear and bending moment peaks occurs but no significant difference between the shear and moment in the foundation and tower base was found, as the foundation inertia was found to be negligible.…”

Section: Effects Of Base Dynamics On Foundation Loadssupporting

confidence: 69%

On the evaluation of wind loads for wind turbines' foundation design: Experimental and numerical investigations

Abdelkader

Aly

Rezaee

et al. 2017

Struct Design Tall Spec Build

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Summary In the past two decades, wind farms have been enjoying renewed interest as means for clean and renewable energy production. Larger and taller wind turbines are used for harvesting wind energy. In this paper, a boundary‐layer wind tunnel experiment was carried out on a model of the 5‐MW National Renewable Energy Laboratory (NREL) wind turbine, to evaluate overall wind‐induced base loadings in a parked condition. While mean and background base loadings were measured experimentally, a posttest dynamic analysis framework is developed to assess inertial loads analytically. The analytical analysis is carried out under both rigid and flexible tower‐foundation assumptions. Whenever applicable, the wind tunnel measurements are compared with NREL results, which were obtained by using the Fatigue, Aerodynamics, Structures, and Turbulence (FAST) software. The comparison shows a good agreement between the proposed approach and the available FAST results. In addition, the study indicates that the flexibility of the foundation may result in a reduced overall wind loads, due to base isolation effects. However, the assumption of a rigid foundation results in a slightly conservative base loads. This said, depending on the available foundation system, the methodology followed in the current paper remains in force and the base stiffness can be updated to permit the estimation of actual foundation loadings.

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Section: Effects Of Base Dynamics On Foundation Loadssupporting

confidence: 69%

On the evaluation of wind loads for wind turbines' foundation design: Experimental and numerical investigations

Abdelkader

Aly

Rezaee

et al. 2017

Struct Design Tall Spec Build

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“…MCS is considered a more reliable method for performing a probabilistic analysis [14], commonly used in a variety of studies [15][16][17]. For a performance function Y ¼ f ðX i sÞ, the algorithm of MCS is to generate random values of X i s based on their probability distribution observed, then substituting them into the function Y ¼ f ðX i sÞ to obtain a random Y value.…”

Section: Monte Carlo Simulation or Mcsmentioning

confidence: 99%

A new seismic hazard analysis using FOSM algorithms

Wang

2014

Soil Dynamics and Earthquake Engineering

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“…Chatzigogos et al presented a new formulation for modeling of shallow foundations of structures using the concept of macroelement . By using the above methods, Moghaddasi et al used robust Monte Carlo simulation to analyze the SSI effects. Finn et al compared various numerical methods used in practice for simulating SSI effects.…”

Section: Introductionmentioning

confidence: 99%

Influence of soil‐structure interaction on performance of a super tall building using a new eddy‐current tuned mass damper

Zhou

Wei

Lü

et al. 2018

Structural Design Tall Build

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Tuned mass dampers (TMDs) can be used as vibration control devices to improve the vibration performance of high-rise buildings. The Shanghai Tower (SHT) is a 632-m high landmark building in China, featuring a new eddy-current TMD. Special protective mechanisms have been adopted to prevent excessively large amplitude of the TMD under extreme wind or earthquake loading scenarios. This paper presents a methodology for simulating behavior of the new eddy-current TMD that features displacementdependent damping behavior. The TMD model was built into the SHT finite element model to perform frequency analysis and detailed response analyses under wind and earthquake loads. Furthermore, soil-structure interaction (SSI) effects on wind and seismic load responses of the SHT model were investigated, as SSI has a significant impact on the vibration performance of high-rise buildings. It was found that SSI has more significant effects on acceleration response for wind loads with a short return period than for wind loads with a long return period. Some of the acceleration responses with SSI effects exceed design limits of human comfort for wind loads with shorter return periods. As to the seismic analyses, it was found that SSI slightly reduces the displacement amplitude, the damping force, and the impact force of the TMD.

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Effects of soil–foundation–structure interaction on seismic structural response via robust Monte Carlo simulation

Cited by 26 publications

References 24 publications

On the evaluation of wind loads for wind turbines' foundation design: Experimental and numerical investigations

On the evaluation of wind loads for wind turbines' foundation design: Experimental and numerical investigations

A new seismic hazard analysis using FOSM algorithms

Influence of soil‐structure interaction on performance of a super tall building using a new eddy‐current tuned mass damper

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