Evaluation of ground motion parameters and seismic response of reinforced concrete buildings from the Mw 6.9, 2011 Sikkim earthquake

Wani, Faisal Mehraj; Vemuri, Jayaprakash; Chenna, Rajaram

doi:10.1016/j.ghm.2023.05.001

Cited by 10 publications

(1 citation statement)

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“…Additionally, the spatial distribution and attenuation characteristics of the near-source ground motion during the Mw 6.9 Menyuan earthquake in Qinghai, China have been examined by (Xie et al, 2023). Further, significant damage to non-engineered RC buildings in the 2011 Sikkim earthquake for near-source ground motions has been reported by (Wani et al, 2023). Furthermore, Beyen and Tanırcan (2015) investigated the effect of HW and FW in the reverse-slip 2011 Turkey earthquake, and demonstrated, that the effects of directivity and HW have a significant impact on the response of structures, even in cases where the recorded peak acceleration values in the region are relatively low.…”

Section: Introductionmentioning

confidence: 99%

Influence of near-fault ground motion characteristics and the relative geographical positioning of sites on the seismic response of RC structures

Wani

Vemuri

Chenna³

2023

IJSI

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PurposeThe objective of the study is to examine the response of reinforced concrete (RC) structures subjected to Near-Fault Ground Motions (NFGM) and highlight the importance of considering various factors including the influence of the relative geographical position of near-fault sites that can affect the structural response during an earthquake.Design/methodology/approachIn this paper, the response of a four-storey RC building subjected to NFGMs with varied characteristics like hanging wall and footwall in conjunction with directivity and the effect of pulse-like ground motions with rupture direction are investigated to understand the combined influence of these factors on the behavior of the structure. Furthermore, the capacity and demand of the structural element are investigated for computing the performance ratio.FindingsResults from this study indicate that the most unfavorable combinations for structural damage due to near-fault ground motion are the hanging wall with forward rupture, the fault normal component of ground motions, and pulse-like ground motions with forward directivity.Originality/valueThe results from this study provide valuable insight into the response of RC structures subjected to NFGM and highlight the importance of considering various factors that can affect the structural response during an earthquake. Moreover, the computation of capacity and demand of the critical beam indicates exceedance of desired limits, resulting in the early deterioration of the structural elements. Finally, the analytical analysis from the present study confirms that the hanging wall with forward ruptures, pulse-like motions, and fling steps are the most unfavorable combinations for seismic structural damage.

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Section: Introductionmentioning

confidence: 99%