Numerical simulation of seismic response of Slope–Foundation–Structure interaction for mid–rise RC buildings at various locations

Bahuguna, Ashish; Firoj, Mohd

doi:10.1016/j.istruc.2022.08.011

Cited by 10 publications

(7 citation statements)

References 36 publications

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“…For 30% TC, the footing fails at 7.5 kN load and for 0% TC, the footing fails at 2.5 kN which is the significant aspect to be observed. Similar range of results are observed in the literatures 17 . The respective load–deflection graph is plotted as shown in Fig.…”

Section: Resultssupporting

confidence: 92%

“…For instance, Firoj et al studied effect of nonlinear soil–structure interaction and lateral stiffness on seismic performance of mid-rise RC building. They have found that lateral stiffness and SSI significantly affect the seismic performance in mid-rise buildings 17 . Bhuguna and Firoj reported another current work entitled “numerical simulation of seismic response of slope–foundation–structure interaction for mid-rise RC buildings at various locations.…”

Section: Introductionmentioning

confidence: 99%

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Numerical modelling on geotechnical features of soil mixture using recycled tire crumb to strengthen the seismic isolation in building

Raj,

Kumar,

Kırgız

et al. 2024

Sci Rep

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In this research, the performance pertaining to tire crumb obtained from scrap tire processing plants is discussed. These tire crumbs are blended with soil at a 30% ratio. When subjected to seismic load, the performance of the 30% tire crumb combination is superior to the 0% tire crumb combination. The investigation is classified into two phases. Phase 1 of the study involves conducting an experimental investigation by applying cyclic loads to a model footing that was resting on the soil with and without tire crumbs. This study reveals that a 30% tire crumb combination achieves optimum energy absorption and minimal footing stiffness, which is a crucial component needed for base isolation. Additionally, using the PLAXIS 2D software package, finite element analysis was carried out during the second phase of the study. For this study, a three-story residential building close to the border between India and Nepal is used. Three different disastrous seismic excitations are applied to the building. From this analytical analysis, it is reported that a 60–70% reduction in acceleration is attained for 30% tire crumb combination with soil. Therefore, from the two phases, it is evaluated that the inclusion of tire crumbs with soil is an excellent seismic base isolation material.

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Section: Resultssupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Numerical modelling on geotechnical features of soil mixture using recycled tire crumb to strengthen the seismic isolation in building

Raj,

Kumar,

Kırgız

et al. 2024

Sci Rep

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“…where ρ is the mass density, z is the layer thickness, and u is the displacement of the medium. Replacing Equation (14) into Equation ( 15) converts to,…”

Section: Equation Of Motion Of the Systemmentioning

confidence: 99%

“…Recent studies 3–15 have incorporated the SSI effect in the dynamic analysis of structures. For instance, Hokmabadi et al 16 discussed the SSI effect on deep foundations through shaking table tests on 5, 10, and 15‐storey buildings.…”

Section: Introductionmentioning

confidence: 99%

Analytical plasticity‐based model for soil–structure interaction of lumped system on heterogeneous soil media

Bahuguna,

Firoj

2023

Earthquake Engineering and Resilience

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In the present study, an analytical approach is developed for the soil–structure interaction for the linear, eq. linear and elastic‐perfectly plastic layered soil strata. The amplification factor is calculated at the top of a lumped structure incorporating layered soil, foundation, and super‐structure deformation. The equation of motion of the system under the normalized earthquake excitation is solved using the direct integration method. MATLAB script is developed to carry out the parametric study, and nonlinear time history analysis is performed. The present methodology is compared with the finite element model (FEM), which shows good agreement. The computational time is much less than the FEM method. A parametric study is carried out in terms of soil heterogeneity, mass ratio, slenderness ratio, excitation frequency, and material model. The results indicate that due to the heterogeneity of the soil, the response of the structure is increased significantly; with the increase in the mass ratio, the amplification factor decreases with excitation frequency up to resonance, and the effect of mass ratio is negligible at the higher frequency range; with the increase in slenderness ratio, the amplification factor increases up to resonance, however, at higher frequency ranges there is no effect of slenderness ratio.

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“…They have shown that the structure‐soil‐structure scenario has practically negligible additional effects with respect to soil‐structure interaction. Recently, Bahuguna and Firoj 47 performed finite element analyses to evaluate the seismic response of a mid‐rise building placed at various locations on slope consisting of linear and nonlinear homogenous soil strata. They found that the buildings located on the face of slope are more vulnerable to rocking failure.…”

Section: Introductionmentioning

confidence: 99%

Seismic fragility analysis of coupled building‐slope systems

Raj,

Singh,

Kaynia

2023

Earthq Engng Struct Dyn

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Buildings located on hill slopes are subjected to additional effects under seismic action compared with those on flat ground. This article presents Incremental Dynamic Analyses of coupled building‐slope systems incorporating topographic amplification, nonlinear slope movement and irregular structural configuration of hill‐side buildings. Two different stable slopes, supporting single and multiple adjacent ductile moment resisting reinforced concrete frame buildings with step‐back configuration, prevalent in Indian and Chinese hilly regions, are modelled and analyzed using the finite element software ABAQUS. A suite of 21 ground motions is incrementally scaled and used to compute the seismic response of the coupled system. Fragility curves for different damage states, derived as lognormal probability distributions in terms of three different Intensity Measures (IMs) and damage probabilities of the considered buildings, are derived and compared. The spectrum‐based IMs (e.g., spectral acceleration at fundamental period, and average of the spectral acceleration over a period range) result in lower record‐to‐record variability, compared with the peak ground acceleration as the IM. The results reveal that ignoring the effect of slope significantly underestimates the fragility for all the damage states.

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Numerical simulation of seismic response of Slope–Foundation–Structure interaction for mid–rise RC buildings at various locations

Cited by 10 publications

References 36 publications

Numerical modelling on geotechnical features of soil mixture using recycled tire crumb to strengthen the seismic isolation in building

Numerical modelling on geotechnical features of soil mixture using recycled tire crumb to strengthen the seismic isolation in building

Analytical plasticity‐based model for soil–structure interaction of lumped system on heterogeneous soil media

Seismic fragility analysis of coupled building‐slope systems

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