Seismic response of multi-storied building with shear wall considering soil-structure interaction in Patna, India

Mishra, Sunny; Samanta, Avik

doi:10.1016/j.istruc.2023.104877

Cited by 3 publications

(2 citation statements)

References 42 publications

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“…Written as ε = 0 in Equation ( 15) and substituted into Equation (34), the expression for α m is as follows:…”

Section: Moment Contribution Ratio For Parabolic Static Loadmentioning

confidence: 99%

“…Mishra and Samanta [34] investigated the structural response of nine-story buildings with and without shear walls on soft soil, specifically in the seismic region of Patna, India. Analyzing various conditions, including fixed and flexible bases, the research concluded that shear and infill walls play a crucial role in reducing seismic responses, while base flexibility increases vulnerability.…”

Section: Introductionmentioning

confidence: 99%

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A Method for Determination of Moment Contribution Ratio under Foundation Rotation in Shear Wall-Frame Systems

Bozdogan,

Keskin

2024

Buildings

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In shear wall-frame systems, the foundation rotation that may occur under the shear walls changes the displacements and interstory drift ratios and changes the internal force distribution. This study investigates the effect of foundation rotations under shear walls on internal force distribution in shear-frame systems. The originality of the study lies in considering parabolic loads and dynamic analysis (first mode), in addition to static uniform or triangular distributed loads, when determining the shear wall moment contribution ratio under the influence of foundation rotation. The shear wall contribution ratio, a key parameter in many earthquake codes, is defined as the ratio of the sum of bending moments taken by the shear walls at the base to the overturning moment. It plays a crucial role in determining the building’s behavior. Depending on this ratio, the load-reduction coefficient is changed. This study investigates the effect of foundation rotation on the moment distribution at the base for three different static load cases and the first mode in the dynamic analysis. The multi-story building is modeled as an equivalent sandwich beam. The moment contribution ratio (MCR) was calculated with the help of analytical solutions of the differential equations written for three different load cases in static conditions, and graphs were created for practical use directly calculating the MCR. In the methodology of the study, the initial step involves the calculation of the equivalent sandwich beam stiffness parameters and the foundational rotational spring. Subsequent to these calculations, the MCR values can be directly obtained with the help of graphs. This approach facilitates the rapid and practical determination of the MCR and can be used in the preliminary sizing phase to eliminate possible errors in the data entry of software that performs detailed analysis. In addition, in the presented study, it has been shown that taking a single mode into account is sufficient when calculating MCR values in dynamic analysis.

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“…Written as ε = 0 in Equation ( 15) and substituted into Equation (34), the expression for α m is as follows:…”

Section: Moment Contribution Ratio For Parabolic Static Loadmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Method for Determination of Moment Contribution Ratio under Foundation Rotation in Shear Wall-Frame Systems

Bozdogan,

Keskin

2024

Buildings

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Soil Structure Interaction Effects on Multistorey Asymmetric Building Subjected to Earthquake Loading

Chakraborty,

Bhattacharya,

Sawant

2024

Indian Geotech J

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The Dynamic Soil–Foundation–Structure Interaction Problem in the Time Domain Using a Discrete Element Model

Tekin,

Gencer

2024

Applied Sciences

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This study investigates the influence of the soil–structure interaction (SSI) on the seismic performance of structures, focusing on the effects of foundation size, soil type, and superstructure height. While the importance of SSI is well recognized, its impact on structural behavior under seismic loads remains uncertain, particularly in terms of whether it reduces or amplifies structural demands. A simplified dynamic model, incorporating both the mechanical behavior of the soil and structural responses, is developed and validated to analyze these effects. Using a discrete element approach and the 1940 El Centro earthquake for validation, the study quantitatively compares the response of soil-interacting structures to those with fixed bases. The numerical results show that larger foundation blocks (20 m × 20 m and 30 m × 30 m) increase the seismic response values across all soil types, causing the structure to behave more like a fixed-base system. In contrast, reducing the foundation size to 10 m × 10 m increases the flexibility of structures, particularly buildings built on soft soils, which affects the displacement and acceleration response spectra. Softer soils also increase natural vibration periods and extend the plateau region in regard to spectral acceleration. This study further finds that foundation thickness has a minimal impact on spectral displacement, but structures on soft soils show more than a 15% reduction in spectral displacement (SD) compared to those on hard soils, indicating a dampening effect. Additionally, increasing the building height from 7 to 21 m results in a more than 20% decrease in SD for superstructures with natural vibration periods exceeding 2.4 s, while taller buildings with longer natural vibration periods exhibit opposite trends. Structures built on soft soils experience larger foundation-level displacements, absorbing more seismic energy and reducing earthquake accelerations, which mitigates structural damage. These results highlight the importance of considering SSI effects in seismic design scenarios to achieve more accurate performance predictions.

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Seismic response of multi-storied building with shear wall considering soil-structure interaction in Patna, India

Cited by 3 publications

References 42 publications

A Method for Determination of Moment Contribution Ratio under Foundation Rotation in Shear Wall-Frame Systems

A Method for Determination of Moment Contribution Ratio under Foundation Rotation in Shear Wall-Frame Systems

Soil Structure Interaction Effects on Multistorey Asymmetric Building Subjected to Earthquake Loading

The Dynamic Soil–Foundation–Structure Interaction Problem in the Time Domain Using a Discrete Element Model

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