2011 Sikkim Earthquake at Eastern Himalayas: Lessons learnt from performance of structures

Dutta, Sekhar Chandra; Mukhopadhyay, Parthasarathi; Saha, Rajib; Nayak, Sanket

doi:10.1016/j.soildyn.2015.03.020

Cited by 30 publications

(8 citation statements)

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“…Infill walls were observed to have been severely damaged in past earthquakes [1][2][3][4][5][6], and blocks fell from the attached walls owing to the combined effects of infill wall damage and seismic acceleration. According to field investigations, these masonry infill walls usually have weak boundary connections with the main structure [7,8]. This is especially true for the developing countries where quality control of the connection between the infill masonry walls and the main structures is difficult to be ensured.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on earthquake-induced falling debris of exterior infill walls and its impact to pedestrian evacuation

Yang

Chea

et al. 2020

International Journal of Disaster Risk Reduction

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Section: Introductionmentioning

confidence: 99%

Experimental study on earthquake-induced falling debris of exterior infill walls and its impact to pedestrian evacuation

Yang

Chea

et al. 2020

International Journal of Disaster Risk Reduction

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“…The latter event of 2011 earthquake caused damage in eastern Nepal including Indian state of Sikkim (for details, see Shakya et al 2013;Dutta et al 2015). Geotechnical aspects of earthquakes have paramount impact on performance of structures and lifelines at depicted by many earthquakes worldwide.…”

Section: Introductionmentioning

confidence: 99%

Unearthed lessons of 25 April 2015 Gorkha earthquake (M_W 7.8): geotechnical earthquake engineering perspectives

Gautam¹

2017

Geomatics, Natural Hazards and Risk

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Gorkha earthquake (M W 7.8) of 25 April 2015 struck central, eastern and western Nepal and neighbouring areas. Enormous losses during Gorkha earthquake were attributed to collapse of 498,852 buildings, 446 public health facilities and partial damage of 256,697 buildings, 765 health facilities as well as severely affected 2900 cultural and historical sites. Anomalies were in particular observed in terms of localized damage and recurrent damages during 1833, 1934, 1988 and 2015 earthquakes. This paper reports geotechnical earthquake engineering observations noted during field reconnaissance conducted in affected areas. Damage reports from historical as well as recent Gorkha earthquakes are mapped in this paper. To depict lessons, forensic interpretations are presented considering 1833, 1934, 1988 and 2015 earthquakes.

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“…Also, more damage was observed in the newer structures compared to the older ones. Various types of damage patterns were observed after the earthquake, (a) collapse due to ground shaking ampli cation and lateral spreading, (b) pounding of buildings, (c) collapse due to out-of-plane rotation, (d) generation of structural cracks, (e) plastic hinge formation (Dutta et al 2015).…”

Section: Sikkim Earthquake (2011)mentioning

confidence: 99%

Seismic Damage in India and the Associated Reasons: A case study

Kain

Gupta

Shrivastava

2022

Preprint

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India has had a rich historical account of seismic occurrences. However, our response to such events in the past has not been much effective in mitigating the dangers to society. Non-Adherence to seismic codes, sporadic revision practices and asynchronous provisions regarding materials and advancements in the market were barriers to earthquake-resistant building practices. We did case studies for three major earthquakes in the last three decades. We observed a similar pattern of practices and damages across the three earthquake occurrences. It was evident that very little change in the operations was noticed in each case. Incompliance with guidelines, the involvement of an inexpert workforce in building projects, and a weak system of checks and inspections led to huge losses as witnessed. We can prevent the large-scale damages witnessed after the onset of seismic events by using correct scientific and engineering principles. Through the active interest of the government and state regulatory bodies and the introduction of strict legal guidelines, our country's building infrastructure could perform better in response to seismic waves. This study presents a comprehensive study of the issues associated with earthquake mitigation strategies in India. We have discussed the far-reaching rationales for the associated damage and disruption of the system due to such calamities. Further, the socio-political reasons for the weak legal infrastructure, a section on the much-hyped Engineers Bill and other practical discussions and suggestions have been presented in this study.

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2011 Sikkim Earthquake at Eastern Himalayas: Lessons learnt from performance of structures

Cited by 30 publications

References 0 publications

Experimental study on earthquake-induced falling debris of exterior infill walls and its impact to pedestrian evacuation

Experimental study on earthquake-induced falling debris of exterior infill walls and its impact to pedestrian evacuation

Unearthed lessons of 25 April 2015 Gorkha earthquake (M_W 7.8): geotechnical earthquake engineering perspectives

Seismic Damage in India and the Associated Reasons: A case study

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2011 Sikkim Earthquake at Eastern Himalayas: Lessons learnt from performance of structures

Cited by 30 publications

References 0 publications

Experimental study on earthquake-induced falling debris of exterior infill walls and its impact to pedestrian evacuation

Experimental study on earthquake-induced falling debris of exterior infill walls and its impact to pedestrian evacuation

Unearthed lessons of 25 April 2015 Gorkha earthquake (MW 7.8): geotechnical earthquake engineering perspectives

Seismic Damage in India and the Associated Reasons: A case study

Contact Info

Product

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Unearthed lessons of 25 April 2015 Gorkha earthquake (M_W 7.8): geotechnical earthquake engineering perspectives