Validation of a finite element modelling approach on soil-foundation-structure interaction of a multi-storey wall-frame structure under dynamic loadings

Qaftan, Omar S.; Toma‐Sabbagh, Tahsin; Weekes, Laurence; Augusthus-Nelson, Levingshan

doi:10.1016/j.soildyn.2020.106041

Cited by 21 publications

(9 citation statements)

References 46 publications

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“…Direct economic losses for the strong earthquakes increased 33% considering SSI effects compared with the fixed-base model. In the research of Qaftan et al (2020), the scaling process and design of a scaled 15-storey RC frame-shear wall structure with a scale factor of 1:50 are addressed. The results indicated the structure built on pile raft foundation experienced on average 30% less rocking in comparison to the structure supported by the raft foundation.…”

Section: Introductionmentioning

confidence: 99%

Effects of dynamic soil-structure interaction on seismic behaviour of high-rise buildings

Xiao-feng

Far

2021

Bull Earthquake Eng

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It is conventional to assume that the role of the soil-structure interaction (SSI) is beneficial to the buildings under seismic loading. However, lessons learned from recent earthquakes revealed that this assumption could be misleading, and SSI may have different effects on the seismic response of different structural systems. In this study, an enhanced soil-structure numerical model is developed and verified using ABAQUS software to assess the impact of SSI on high-rise frame-core tube structures. The seismic responses of 20, 30, and 40-storey buildings constructed on soil class Ee (according to Australian Standards) under four earthquake acceleration records have been studied. The results in terms of maximum lateral deflections, foundation rocking, inter-storey drifts and storey shear forces for the rigid base and flexible base frame-core tube structures have been discussed and compared.Generally, SSI has a remarkable impact on the seismic behaviour of high-rise frame-core tube structures since it can increase the lateral deflections and inter-storey drifts and decrease storey shear forces of structures. However, It is worth noting that the seismic responses of soil-structure systems under near and far field earthquakes are considerably different.

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Section: Introductionmentioning

confidence: 99%

Effects of dynamic soil-structure interaction on seismic behaviour of high-rise buildings

Xiao-feng

Far

2021

Bull Earthquake Eng

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“…Hessam et al and Gouasmia et al showed the importance of considering nonlinear SSI effects in finite element (FE) approach of SSI [8,9]. Omar et al showed FE method for better response than experimental methods and the numerical methods are best suitable for dynamic problems [10]. Rayhani and Naggar performed both physical modelling and numerical modelling for layered soil [11].…”

Section: Introductionmentioning

confidence: 99%

Influence of Soil-Structure Interaction on the Seismic Response of the Structure on Mat Foundation

Awchat

Monde

2021

Civ Eng J

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The disasters that occur due to seismic activities not only affect the structure but also soil beneath it. Neglecting the effect of Soil-Structure Interaction (SSI) in design leads to unsafe design. This paper focuses on the behavior of the structure under El-Centro earthquake considering soil-structure interaction (SSI). Seismic response of G+10 storied building in various seismic zones of India is obtained using Time-history method. The direct approach i.e., finite element analysis is used to analyze effect of SSI. The model with mat foundation and soil is compared with fixed base model in SAP 2000 v.20. The behavior of the structure is studied by parameters like inter-storey drift ratio, lateral storey displacements, response spectrum curves for spectral acceleration and spectral velocity for various damping and time period of different seismic zones of India. The parameter like inter-storey drift ratio can determine safety of the structures. From inter-storey drift ratios, the buildings in zone IV and zone V were found to be unsafe. The lateral storey drift was found to increase by 47-87% considering SSI in zone II and 60-95% considering SSI in Zone II, IV and V. It also increased with increase in storey number. The spectral acceleration, spectral velocity and time period increased by considering effects of SSI in each seismic zone. The spectral acceleration and spectral velocity found to decrease with increase in damping and increase in seismic zones from zone II to V. Further to reduce the effect of SSI the structures can be equipped with base isolators and various types of dampers. It is clear that from zone III to V, SSI should be included for structures on soft soil and for retrofitting of the structure. Some experimental studies can further be performed and the numerical modelling can include parameters like P-delta, angle of incidence of ground motions and various structural systems can be implemented in this study. Doi: 10.28991/cej-2021-03091752 Full Text: PDF

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“…To date, the pile-raft foundations are one of the most effective developments in the foundation engineering field [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. They successfully apply in the design of multi-storey facilities on sites with unfavorable geological conditions, so far as they have an increased bearing capacity [2,[20][21][22][23][24]. However, in recent times, it is quite often in the construction of such foundations, there are cases of deviation from design solutions, which can lead, despite their high distribution capacity, to the uneven settlements development and, as a result, damage to the above-ground structures [1,3,[9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Numerical studies of soil base deformations from reconstructed multi-storey building to nearby buildings

2021

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During the building reconstruction with floors addition, there is a need to evaluate the building frame and foundation soil bearing capacity, especially if there are deviations from the design parameters. As a result of the field and numerical studies, we determined the basic change patterns in the stress-strain state of the 12-storey building load-bearing structures with a monolithic reinforced concrete frame due to uneven pile foundation deformation. We also found the influence degree of the existing deviations from the design parameters to the structures bearing capacity. The research results can be applied in reconstruction conditions with a significant increase in the load on the existing load-bearing elements of the building and on the pile foundation.

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Validation of a finite element modelling approach on soil-foundation-structure interaction of a multi-storey wall-frame structure under dynamic loadings

Abstract: Ti t l eValid a tio n of a finit e el e m e n t m o d elli n g a p p r o a c h o n s oilfo u n d a tio n

Cited by 21 publications

References 46 publications

Effects of dynamic soil-structure interaction on seismic behaviour of high-rise buildings

Effects of dynamic soil-structure interaction on seismic behaviour of high-rise buildings

Influence of Soil-Structure Interaction on the Seismic Response of the Structure on Mat Foundation

Numerical studies of soil base deformations from reconstructed multi-storey building to nearby buildings

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