Dynamic soil-structure interaction models for fragility characterisation of buildings with shallow foundations

Cavalieri, Francesco; Correia, António A.; Crowley, Helen; Pinho, Rui

doi:10.1016/j.soildyn.2019.106004

Cited by 46 publications

(28 citation statements)

References 36 publications

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“…The first macro element was proposed by Nova & Montrasio [50] for a simplified case of footing and soil subjected to monotonic loading. Since then several macro element models have been proposed with different loading scenarios, foundation shapes and soil types; see for instance [51][52][53][54][55].…”

Section: Substructure Methods For Evaluation Of Ssimentioning

confidence: 99%

Review of Soil-Structure Interaction Based on Continuum Mechanics Theory and Use of High Performance Computing

2021

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Recent achievement of research on soil-structure interaction (SSI) is reviewed, with a main focus on the numerical analysis. The review is based on the continuum mechanics theory and the use of high-performance computing (HPC) and clarifies the characteristics of a wide range of treatment of SSI from a simplified model to a high fidelity model. Emphasized is that all the treatment can be regarded as the result of the mathematical approximations in solving a physical continuum mechanics problem of a soil-structure system. The use of HPC is inevitable if we need to obtain a solution of higher accuracy and finer resolution. An example of using HPC for the analysis of SSI is presented.

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Section: Substructure Methods For Evaluation Of Ssimentioning

confidence: 99%

Review of Soil-Structure Interaction Based on Continuum Mechanics Theory and Use of High Performance Computing

2021

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“…The method provides the coupling of the two separate models at the soil-structure interaction surface. Employing the substructure method, the numerical modeling of two substructures can be conducted considering the nonlinear behavior of the soil or the structure, as well [20]. In a recent study, the load distribution for capped pile and piled rafts in homogeneous layered soils was examined.…”

Section: Introductionmentioning

confidence: 99%

Estimation of interstory drift ratio and performance levels for the multistory buildings considering the effect of soil-structure interaction

Özbay¹,

Bakır²

2021

Pamukkale J Eng Sci

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The interaction of soil and structure significantly alters displacement response of the framed structures. This effect is mostly important for the buildings resting on soft soils. Including these effects in the dynamic analysis, the lateral displacements and the drift demand of the building increase depending on the type of the underlying soil. The variation in the drift demand due to the interaction effects also changes the performance level of the structure, as well. Since the interstory drift ratio is one of the most important demand parameter, it is essential to integrate the effects of soil structure interaction within the structural design process and the performance assessment. In this study, the drift demand of an existing multistory building is obtained using an improved technique for dynamic analysis of the soil-structure systems. The technique is based on the analysis of the multistory buildings under the seismic wave propagation employing Finite Element Methods (FE) for the superstructure and Boundary Element Methods (BE) for the underlying soil medium. The lateral displacement response at each story level is used to determine maximum interstory drift ratio of the building and to estimate structural performance level.

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“…Besides, the nonlinear behavior of soil and its inherent damping make it possible to dissipate the seismic energy of input motions. However, a limited number of studies have focused on the effect of SSI at the collapse limit state (Pitilakis et al 2014;Karapetrou et al 2015;Cavalieri et al 2020). In addition, none of the aforementioned studies have investigated the adequacy of the SCWB provision for the flexible-base structures that are prone to pulse-type ground motions.…”

Section: Introductionmentioning

confidence: 99%

A probabilistic model for the evaluation of strong column-weak beam provision for flexible-base buildings subjected to pulse-like ground motions

Ghorbanzadeh

Khoshnoudian

Taghikhany

2021

Bull Earthquake Eng

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The main objective of this study is to employ a probabilistic approach to determine the appropriate value of the strong column-weak beam ratio (SCWBR) for three mid-to highrise moment frames. These buildings are subjected to pulse-type ground motions. The nonlinear soil-structure interaction (SSI) is also involved as another seismic energy dissipation mechanism. A set of incremental nonlinear dynamic analyses are performed for 91 pulselike ground motions. The proposed approach includes global and local performance criteria. Park-Ang damage index is utilized as the damage measure for columns. In this regard, simple mathematical equations are also derived to quantify the impact of the SCWBR. This framework introduces an upper bound on the SCWBR beyond which further increase of this parameter would not be required to limit the damage of columns. The results indicate that for the 4-story building, the applicability of the SCWBR extends to values as large as 2.4, while for the 8 and 12-story buildings, this is restricted to 1.8 and 1.6, respectively. However, these values substantially depend on the pulse period in such a way that the SCWBR of 1.2 would be sufficient when the pulse period is approaching the fundamental period of structures. The SSI may improve the collapse probability of high-rise structures to a larger extent compared to SCWBR. Nevertheless, its effect can be diminished by more damage of columns at the lower portion of buildings.

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Dynamic soil-structure interaction models for fragility characterisation of buildings with shallow foundations

Cited by 46 publications

References 36 publications

Review of Soil-Structure Interaction Based on Continuum Mechanics Theory and Use of High Performance Computing

Review of Soil-Structure Interaction Based on Continuum Mechanics Theory and Use of High Performance Computing

Estimation of interstory drift ratio and performance levels for the multistory buildings considering the effect of soil-structure interaction

A probabilistic model for the evaluation of strong column-weak beam provision for flexible-base buildings subjected to pulse-like ground motions

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