Narsiram Gurjar

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  • BTech: CTAE Udaipur,  India, 2015
  • MTech: NIT Trichy, India, 2017
  • PhD: IIT Gandhinagar, India, 2024
  • Present: Postdoctoral Scholar, IIT Madras

​Email: narsiram.gurjar@iitgn.ac.in 
ResearchGate: https://www.researchgate.net/profile/Narsiram_Gurjar

Area: Spatial variability of 6C-ground motion field and possible influence in seismic design

The ground excitation recorded in different directions during an earthquake, represents the characteristics of seismic excitation at a single point and provides a basic input for various earthquake engineering studies. Differences in the ground shaking over distance are generally referred as “Spatial variation of ground motions”. In other words, the term spatial variability points out to the fact in which different points in the space are subjected to different ground motions from the same seismic event. Spatial variability is always present, but most structures do not experience any appreciable variation in ground motions due to small horizontal dimensions. However, some extended structures like, bridge, tunnel, dam etc. may have sufficient length to experience a noticeable variation in ground motions. Hence seismic design of such structures demands careful consideration of 6C SVGM (-Component Spatially varying ground motion). We aim to understand the behavior of certain structures like long span bridges, towers and base-isolated buildings when subjected to 6C-SVGM and possible design recommendations.

Publications:

Journal Publication 

  • Rodda, G.K., Gurjar, N. and Basu, D., 2021. Phase-structure in conditional simulation of spatially varying ground motion and possible influence on structural demand. Journal of Earthquake and Tsunami, p.2250003. 
  • Sharma, S., Gurjar, N., Menon, A., Sriwastav, R. K., and Basu, D. (2022). “Developing axial force bending moment interaction charts for the seismic design of RC slender shear walls with boundary elements”, The Indian Concrete Journal, Vol. 96, No. 5, pp. 29-58.
  • Gurjar, N., Basu, D. On the declustering methods of seismic catalogue — an application over Indian subcontinent. J Seismol (2022). https://doi.org/10.1007/s10950-022-10105-9
  • Gurjar, N., & Basu, D. (2022). Epistemic uncertainty in PSHA and seismic hazard characterization using the logic tree approach: part I, Developing the framework. Pure and Applied Geophysics, 179(10), 3647-3676.
  • Gurjar, N., & Basu, D. (2022). Epistemic uncertainty in PSHA and seismic hazard characterization using the logic tree approach: part II, Implementation over North-East India. Pure and Applied Geophysics, 179(12), 4341-4370.
  • Gurjar, N., & Basu, D. (2024). Revisiting Stepp’s method for the completeness of regional seismic catalogues. Journal of Seismology, 28(4), 1055-1086.

Conference Proceedings 

  • Gurjar, N. and Basu, D. (2023). Exploring an Alternate Perspective of the Importance Factor for Seismic Design of Structures. In: Shrikhande, M., Agarwal, P., Kumar, P.C.A. (eds) Proceedings of 17th Symposium on Earthquake Engineering (Vol. 4). SEE 2022. Lecture Notes in Civil Engineering, vol 332. Springer, Singapore. https://doi.org/10.1007/978-981-99-1459-3_51