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Moderating the Soft Storey Impact in Multi-Storey Buildings: A Comparative Seismic Investigation

Year 2024, Volume: 9 Issue: 4, 359 - 373, 31.12.2024
https://doi.org/10.47481/jscmt.1607472

Abstract

A storey that has lateral stiffness less than 70% of the storey above or less than 80% of the average stiffness of the three storeys above is considered a soft storey. Ground floor open-air buildings are frequently used for parking, particularly in metropolitan settings where there are considerable space limits. Soft-storey buildings with irregular stiffness have a greater propensity to collapse than conventional buildings because of this. The study's main goal was to better understand the soft storey effect in multi-storey structures and how to mitigate it using different strategies such adding shear walls, different kinds of bracings, viscous dampers, and stiffer columns. A G+14 storey building finite element model (FEM) has been established via ETABS software and performed Response Spectrum Analysis at three seismic zones-III, IV and V. In order to determine the best method for reducing the soft storey effect in buildings, an analysis is conducted taking into account many parameters, including storey shear, stiffness, storey drift, and storey displacement for the entire structure, as well as the responses at the soft storey level for different configurations. According to the findings, addition of a shear wall to a soft-storey building increases storey shear while reducing maximum displacement and storey drift. The first floor of the structure (soft storey) exhibits the largest reduction in displacement (79.29%) and storey drift (79.3%) when shear walls are incorporated at the corners. At the first storey level, there is also a 33.11% increase in base shear, and the stiffness of the structure increases by 6.5 times compared to a soft storey building. Adding a shear wall tends to reduce the soft storey building's maximum displacement and storey drift by 25.27% and 59.28%, respectively. The soft storey building's maximum storey shear rises by 33.38%. When it comes to seismic performance, a soft-storey building with a shear wall performs better than other soft-storey mitigation techniques.

References

  • 1. Kashif Ahmer, and Sharat.S.Chouka (2020). Seismic Performance Evaluation of Multi-Storey Building Having Soft Storey With Different Location of Shear Walls. International Journal of Innovative Technology and Exploring Engineering (IJITEE),9(11),50–55.
  • 2. Sreadha A R, C.Pany and M V Varkey, “A Review on Seismic Retrofit of Beam-Column Joints,” International Journal for Modern Trends in Science and Technology, 6(9): 80-93, 2020. ISSN: 2455-3778.DOI: https://doi.org/10.46501/IJMTST060914
  • 3. Sreadha A R, C.Pany. Seismic Study of Multistorey Building using Floating Column, International Journal of Emerging Science and Engineering , Vol 6 , No 9 , April 2020,DOI: 10.35940/ijese.G2334.046920
There are 3 citations in total.

Details

Primary Language English
Subjects Construction Materials
Journal Section Research Articles
Authors

Shabla K 0009-0003-7627-2352

K.i. Praseeda This is me 0000-0002-4980-403X

Chıtaranjan Pany 0000-0001-8617-2134

Early Pub Date December 30, 2024
Publication Date December 31, 2024
Submission Date April 23, 2024
Acceptance Date December 6, 2024
Published in Issue Year 2024 Volume: 9 Issue: 4

Cite

APA K, S., Praseeda, K., & Pany, C. (2024). Moderating the Soft Storey Impact in Multi-Storey Buildings: A Comparative Seismic Investigation. Journal of Sustainable Construction Materials and Technologies, 9(4), 359-373. https://doi.org/10.47481/jscmt.1607472

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Journal of Sustainable Construction Materials and Technologies is open access journal under the CC BY-NC license  (Creative Commons Attribution 4.0 International License)

Based on a work at https://dergipark.org.tr/en/pub/jscmt

E-mail: jscmt@yildiz.edu.tr