Modeling soil–foundation–structure interaction

Finn, WD Liam; Pandey, Bishnu; Ventura, Carlos E.

doi:10.1002/tal.735

Cited by 9 publications

(4 citation statements)

References 4 publications

(3 reference statements)

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“…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. Venanzi et al pointed out that fixed‐based assumption might not always be on the safe side.…”

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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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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“…More recently, several studies were conducted to investigate the effect of SSI on SDOF and MDOF structural response (Galal and Naimi, ; Lee et al ., ; Halabian and Erfani, ; Finn et al ., ). As an instance, Halabian and Erfani (), by considering some limited generic reinforced concrete (RC) frame models resting on flexible foundations, evaluated the effects of stiffness and strength of the structure on strength reduction factors.…”

Section: Introductionmentioning

confidence: 99%

Strength reduction factor for MDOF soil-structure systems

Ganjavi

Hao

2012

Struct. Design Tall Spec. Build.

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SUMMARY In most of the seismic design provision, the concept of strength reduction factor has been developed to account for inelastic behavior of structures under seismic excitations. Most recent studies considered soil–structure interaction (SSI) in inelastic response analysis are mainly based on idealized structural models of single degree‐of‐freedom (SDOF) systems. However, an SDOF system might not be able to well capture the SSI and structural response characteristics of real multiple degrees‐of‐freedom (MDOF) systems. In this paper, through a comprehensive parametric study of 21600 MDOF and its equivalent SDOF (E‐SDOF) systems subjected to an ensemble of 30 earthquake ground motions recorded on alluvium and soft soils, effects of SSI on strength reduction factor of MDOF systems have been intensively investigated. It is concluded that generally, SSI reduces the strength reduction factor of both MDOF and more intensively SDOF systems. However, depending on the number of stories, soil flexibility, aspect ratio and inelastic range of vibration, the strength reduction factor of MDOF systems could be significantly different from that of E‐SDOF systems. A new simplified equation, which is a function of fixed‐base fundamental period, ductility ratio, the number of stories, structure slenderness ratio and dimensionless frequency, is proposed to estimate strength reduction factors for MDOF soil–structure systems. Copyright © 2012 John Wiley & Sons, Ltd.

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“…Numerical modeling (FEM) of interaction between building (foundation) structure and the subsoil was dealt with by authors in Refs. [12][13][14][15][16][17]. Bose and Das [18] employed the FEM in their analysis of stress and deformation below the rigid foundation.…”

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confidence: 99%

Numerical Analysis of the Interaction between Shallow (Square, Circular and Strip) Foundations and Subsoil

Hruštinec

2013

JCEA

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Abstract:In this paper, the effects of the stiffness of circular, square and strip foundation structures and bonding effects were analyzed. Presented analysis was oriented on the influence of stiffness system "foundation-subsoil" and bonds (bi-directional bond and one-directional bond with and without friction). The results of numerical calculations have proved that the relative stiffness of system "foundation-subsoil" affect considerably the value and the distribution of contact stresses (vertical normal and shear stresses) in the foundation gap and value of the displacements (settlement, deflection and relative deformations) of foundation. From the numerical point of view, this problem was solved by deformation variant of the FEM (finite element method). The numerically obtained results were presented in the graphical and tabular forms. Obtained results were qualitative and quantitative compared with one another. From the calculation results it is obvious that relative stiffness of the system "foundation structure-subsoil" substantially affects distribution of contact stresses in the foundation subsoil and displacements (settlement, deflection and relative deformations, flexibility) of foundation. In the case of flexible foundations, the bond on the contact surfaces must be considered during the calculation. On the other hand, the effects of friction on the contact surface between the foundation and subsoil affect the distribution of contact stresses and deformations only to smaller extent.

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Modeling soil–foundation–structure interaction

Cited by 9 publications

References 4 publications

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

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

Strength reduction factor for MDOF soil-structure systems

Numerical Analysis of the Interaction between Shallow (Square, Circular and Strip) Foundations and Subsoil

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