Higher mode seismic structure-soil-structure interaction between adjacent building during earthquakes

Vicencio, Felipe; Alexander, Nicholas A.

doi:10.1016/j.engstruct.2018.07.049

Cited by 37 publications

(27 citation statements)

References 25 publications

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“…When studying the influence of these two factors on SSSI, the number of floors of the three structures was maintained at 12. Moreover, the response of each structure in the group was compared to that of the singlestructure-soil system in order to find out whether or not SSSI effects can be of importance [14,15]. Therefore, we defined a variable J to measure the degree of the effects of SSSI, as shown in Equation (1).…”

Section: Problem Definitionmentioning

confidence: 99%

“…A three-dimensional viscoelastic BEM (Boundary Elements Method)-FEM (Finite Elements Method) formulation for the dynamic analysis of piles and pile groups in the frequency domain was used in the research. Vicencio et al [15] proposed an extended simplified reduced order model that enabled higher mode interaction between structures and evaluated the effects of SSSI between two buildings under seismic excitation given different parameters of the buildings, inter-building spacing, and soil types. An extended simplified reduced order model that enables higher mode interaction between structures was proposed in the study.…”

Section: Introductionmentioning

confidence: 99%

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Study on Dynamic Structure-Soil-Structure Interaction of Three Adjacent Tall Buildings Subjected to Seismic Loading

Gan

Liu

2019

Sustainability

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The dynamic structure-soil-structure interaction (SSSI) involving three adjacent structures with pile-raft foundations arranged along the east-west direction in a viscoelastic half-space is numerically studied under earthquake excitation. The direction of earthquake excitation is perpendicular to the direction of the structural arrangement. In the simulation, the Davidenkov model of the soil skeleton curve is assumed for soil behavior, and the viscous-spring artificial boundary is adopted. In order to investigate the effects of SSSI, the clear distance between structures, structure types, structure heights, and the first natural periods of structures are considered, and a series of numerical simulations are conducted. The peak floor displacement and the peak inter-story shear force of structures are examined to determine the SSSI effects. Results show that SSSI effects change significantly with these factors. Furthermore, the structural seismic response could be increased or reduced as a result of SSSI, depending mainly on the structural characteristics, rather than the location of the structures. These results are significant for studying the effects of SSSI and the sustainable development of cities, especially for the seismic design of dense urban buildings.

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Section: Problem Definitionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Study on Dynamic Structure-Soil-Structure Interaction of Three Adjacent Tall Buildings Subjected to Seismic Loading

Gan

Liu

2019

Sustainability

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“…The SCI significantly affects both free‐filed and building displacements and depending on the soil type, urban congestion, number and distance between the structures, as well as frequencies of the structures and soil could lead to decreasing or increasing effects on the vibrations. Numerous researchers have studied the SCI effects through 1D, 2D, and 3D numerical and experimental analyses 1–6 …”

Section: Introductionmentioning

confidence: 99%

Influence of site–city interaction on the response of structures considering soil stiffness, height, and number of buildings

Norouzi

Gerami

Vahdani

et al. 2020

Earthq Engng Struct Dyn

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Simultaneous effects of soil and a number of adjacent structures sitting next to each other is perceived as the site–city interaction (SCI). To better analyze the seismic behavior of the structures, the inclusion of the SCI appears to be essential. Accordingly, the SCI is affected by a number of parameters such as soil profile, urban congestion, as well as dynamic properties of buildings and soil layers. In this study, considering four soil types according to Eurocode8 (EC8) and a series of structures in single and multiple configurations (buildings arranged in 3 × 3 and 5 × 5 groups) representing an ideal city, 3D dynamic analyses were conducted using SASSI2000 software. Then, the acceleration response of the structures placed in the middle of each configuration was compared with that of the single structures to evaluate the influence of soil properties particularly, its stiffness as well as number and height of the structures on the response of the base and top nodes of multi–degree‐of‐freedom structures incorporating the SCI effects. Based on the results, the inclusion of SCI reduced the acceleration values especially at top of the structure (7% and 15% for the bottom and top of the structure on average). In addition, as soil stiffness decreases and the number of buildings increases, the influence of SCI becomes profound. According to the complexities of the SCI, to acquire more accurate results, further parameters such as the type of seismic waves, irregularity of buildings, and faulting mechanism have to be taken into account.

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“…Standards 1–3 account for this velocity when defining soil classes 13 . However, the influence of the effect of soil–foundation interaction on the seismic wave is not often taken into account (e.g., Vicencio and Alexander 14 ).…”

Section: Introductionmentioning

confidence: 99%

Mechanical‐probabilistic formulation of the soil–structure interaction, accounting for the average shear wave velocity

Attal

Grange

Baroth

et al. 2020

Num Anal Meth Geomechanics

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Summary This work proposes a mechanical‐probabilistic formulation of the soil–structure interaction, taking into account the variability of the mean velocity of shear wave seismic load. This work aims at studying the sensitivity of the seismic response of a reinforced concrete frame structure by accounting for different seismic scenarios. For this purpose, the simplified model of a two‐story structure system has been developed. This model is based both on a macro‐element approach and on a stochastic collocation method. The sensitivity of the maximum displacement of the structure under different average shear wave velocities is studied. This aim in view, Gaussian or lognormal random variables are arbitrarily chosen to model this velocity. Analysis of the seismic vulnerability of the soil–structure system leads to cumulative distribution functions, which sometimes show significant differences for the same soil class in the sense of the European standard for the design of structures for earthquake resistance.

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Higher mode seismic structure-soil-structure interaction between adjacent building during earthquakes

Cited by 37 publications

References 25 publications

Study on Dynamic Structure-Soil-Structure Interaction of Three Adjacent Tall Buildings Subjected to Seismic Loading

Study on Dynamic Structure-Soil-Structure Interaction of Three Adjacent Tall Buildings Subjected to Seismic Loading

Influence of site–city interaction on the response of structures considering soil stiffness, height, and number of buildings

Mechanical‐probabilistic formulation of the soil–structure interaction, accounting for the average shear wave velocity

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