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Soil Structure Interaction Effects on Multistorey Asymmetric Building Subjected to Earthquake Loading
https://orcid.org/http://orcid.org/0000-0003-1493-6566
https://orcid.org/http://orcid.org/0000-0002-6730-4311
The current study delves into the impact of soil–structure interaction (SSI) on the behavior of an asymmetric multistorey building frame during earthquakes. The study examines how the variation in soil stiffness influences the structural response using the finite element program LUSAS. Inclusion of infill walls as diagonal struts is considered to understand the difference in base shear and torsional base shear in comparison with bare frame building frames. To evaluate the seismic response of a multistorey building frame site-specific earthquake motion is acquired through deconvolution using 1-D wave propagation method using the DEEPSOIL program. The study reveals that due to the SSI effect infilled building frame exhibits higher stiffness compared to bare frames across different story heights. However, the inclusion of infill walls results in an increase in base shear but a reduction in torsional shear. Consequently, in low-rise buildings, resonance tends to occur in stiff soil, leading to maximum base shear. Conversely, in high-rise structures, peak responses are observed in flexible soil. Moreover, it is observed that soft soil resulted in the reduction of torsional shear. Eccentricity also influences the shear forces. The torsional shear is observed to increase more in the bare frame than infilled frame due to eccentricity.
Soil Structure Interaction Effects on Multistorey Asymmetric Building Subjected to Earthquake Loading
https://orcid.org/http://orcid.org/0000-0003-1493-6566
https://orcid.org/http://orcid.org/0000-0002-6730-4311
The current study delves into the impact of soil–structure interaction (SSI) on the behavior of an asymmetric multistorey building frame during earthquakes. The study examines how the variation in soil stiffness influences the structural response using the finite element program LUSAS. Inclusion of infill walls as diagonal struts is considered to understand the difference in base shear and torsional base shear in comparison with bare frame building frames. To evaluate the seismic response of a multistorey building frame site-specific earthquake motion is acquired through deconvolution using 1-D wave propagation method using the DEEPSOIL program. The study reveals that due to the SSI effect infilled building frame exhibits higher stiffness compared to bare frames across different story heights. However, the inclusion of infill walls results in an increase in base shear but a reduction in torsional shear. Consequently, in low-rise buildings, resonance tends to occur in stiff soil, leading to maximum base shear. Conversely, in high-rise structures, peak responses are observed in flexible soil. Moreover, it is observed that soft soil resulted in the reduction of torsional shear. Eccentricity also influences the shear forces. The torsional shear is observed to increase more in the bare frame than infilled frame due to eccentricity.
Soil Structure Interaction Effects on Multistorey Asymmetric Building Subjected to Earthquake Loading
https://orcid.org/http://orcid.org/0000-0003-1493-6566
https://orcid.org/http://orcid.org/0000-0002-6730-4311
The current study delves into the impact of soil–structure interaction (SSI) on the behavior of an asymmetric multistorey building frame during earthquakes. The study examines how the variation in soil stiffness influences the structural response using the finite element program LUSAS. Inclusion of infill walls as diagonal struts is considered to understand the difference in base shear and torsional base shear in comparison with bare frame building frames. To evaluate the seismic response of a multistorey building frame site-specific earthquake motion is acquired through deconvolution using 1-D wave propagation method using the DEEPSOIL program. The study reveals that due to the SSI effect infilled building frame exhibits higher stiffness compared to bare frames across different story heights. However, the inclusion of infill walls results in an increase in base shear but a reduction in torsional shear. Consequently, in low-rise buildings, resonance tends to occur in stiff soil, leading to maximum base shear. Conversely, in high-rise structures, peak responses are observed in flexible soil. Moreover, it is observed that soft soil resulted in the reduction of torsional shear. Eccentricity also influences the shear forces. The torsional shear is observed to increase more in the bare frame than infilled frame due to eccentricity.
Soil Structure Interaction Effects on Multistorey Asymmetric Building Subjected to Earthquake Loading
Indian Geotech J
Chakraborty, Abhijit (author) / Bhattacharya, Kamal (author) / Sawant, Vishwas A. (author)
Indian Geotechnical Journal ; 55 ; 303-314
2025-02-01
12 pages
Article (Journal)
Electronic Resource
English
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