Significance of structure–soil–structure interaction for closely spaced structures

Roy, Christine; Bolourchi, Saïd; Eggers, Daniel W.

doi:10.1016/j.nucengdes.2015.07.067

Cited by 18 publications

(8 citation statements)

References 2 publications

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“…Nakamura et al (2012) have conducted a comprehensive seismic analysis by using a nonlinear three-dimensional FEM model to determine the (SSSI), and the ground irregularity effect on the seismic response of NPPs (Nuclear Power Plants). Roy et al (2015) have performed a detailed parametric study to analyze the impact of (SSSI) on the behavior of neighboring light structure to a heavy structure, and a heavy structure adjacent to a heavy structure for several soil cases, foundation embedment depths, and separation distances. The results asserted that the SSSI response of light or heavy structures can be in uenced by the existence of a nearby heavy structures.…”

Section: Introductionmentioning

confidence: 99%

Effect of Structure-Soil-Structure Interaction (SSSI) between Three Dissimilar Adjacent Bridges

Alfach

Ayoub

2021

Preprint

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The present study assesses the effect of Structure-Soil-Structure-Interaction (SSSI) on the seismic behavior of three dissimilar adjacent bridges by comparing their seismic responses with the seismic response of the isolated bridge including Soil-Structure-Interaction (SSI). To this end, an extensive series of numerical analyses have been carried out to elicit the effects of Structure-Soil-Structure-Interaction (SSSI) on the seismic behavior of three dissimilar bridges with different superstructure masses. The studied bridges are based on groups of piles founded in nonlinear clay. A parametric study has been performed for configurations of three dissimilar bridges with superstructure masses ratios of 200% and 300%, concentrating on the influence of the inter-bridge spacing, and the geometrical position of the bridges towards each other and towards the seismic excitation direction. The numerical analyses have been conducted using a three-dimensional finite difference modeling software FLAC 3D (Fast Lagrangian analysis of continua in 3 dimensions). The results of the numerical simulations clearly show that the seismic responses of the dissimilar grouped bridges were strongly influenced by the neighboring bridges. In particular, the results reveal a salient positive impact on the acceleration of the superstructure by a considerable drop (up to 90.63%) and by (up to 91.27%) for the internal forces induced in the piles. Comparably, the influence of bridge arrangement towards the seismic loading were prominent on both of superstructure acceleration and the internal forces in the piles. The responses were as much as 27 times lesser for the acceleration and 11 times smaller for the internal forces than the response of the isolated bridge. Contrarily, the inter-bridge spacing has a limited effect on the seismic response of the grouped bridges.

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Section: Introductionmentioning

confidence: 99%

Effect of Structure-Soil-Structure Interaction (SSSI) between Three Dissimilar Adjacent Bridges

Alfach

Ayoub

2021

Preprint

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“…The rapid progress of SSSI studies in subsequent decades has been stimulated by the needs of nuclear power plants (NPPs), which always consist of a reactor building adjacent to a turbine building and control building [21][22][23] . In recent years, apart from its continuation in NPPs [24][25][26][27] , studies related to the SSSI have focused more on structure clusters in urban areas. Population growth and the limited available urban space in large cities, such as New York, Istanbul, and Shanghai, inevitably result in the closer spatial proximity (only a few meters or even a few decimeters) of structures, which has even caused the occurrence of seismic pounding of adjacent structures [28,29] .…”

Section: Introductionmentioning

confidence: 99%

Dynamic structure-soil-structure interaction of piled high-rise buildings under earthquake excitations I: Influence on dynamic response

Wang

Zhang

2021

Lat. Am. j. solids struct.

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“…Due to the global explosion in demography and the development of megacities, many structures constructed are surrounded by various sized buildings with different dynamic characteristics. Previous investigations have reported that significant changes of the near-field motion, due to the dynamic response of structures [14]. Such changes also affect the response of structures located nearby, this is called the structure-soil-structure interaction (SSSI) phenomenon [4,[15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Effect of Height Ratio and Mass Ratio on Structure—Soil—Structure Interaction of Two Structures Using Centrifugal Experiment

Ngo

Kim

Chang³

et al. 2019

Applied Sciences

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: In a megacity, structure response during an earthquake could be increased or decreased due to effects from neighboring structures, through structure-soil-structure interaction (SSSI). In the present study, a series of dynamic geotechnical centrifuge tests are carried out to investigate SSSI effects on responses of structure with various characteristics of mass, height, and natural frequency. Experimental observations are focused on the effects of the distance between two structures, type, and peak acceleration of input excitation. A period lengthening is observed in the soil-foundation-structure interaction (SFSI) effects of all structures. It is monitored that an increment in response of smaller structure and a decrement in response of larger structure, compared to isolated structure, due to SSSI effects. Unfavorable distance reveals that the most significant increment in response of S2 structure occurred at approximately one-fourth of wavelength transmitted from the vibrating adjacent structure. More severe SSSI effects are found under a lower input earthquake acceleration. It is found that both height and mass ratios, between two adjacent structures, are particular parameters on SSSI, resulting in increment or reduction of structure response.

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Significance of structure–soil–structure interaction for closely spaced structures

Cited by 18 publications

References 2 publications

Effect of Structure-Soil-Structure Interaction (SSSI) between Three Dissimilar Adjacent Bridges

Effect of Structure-Soil-Structure Interaction (SSSI) between Three Dissimilar Adjacent Bridges

Dynamic structure-soil-structure interaction of piled high-rise buildings under earthquake excitations I: Influence on dynamic response

Effect of Height Ratio and Mass Ratio on Structure—Soil—Structure Interaction of Two Structures Using Centrifugal Experiment

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