Strong-motion characteristics and visual damage assessment around Seismic stations in Kathmandu after the 2015 Gorkha, Nepal, Earthquake

Subeg Bijukchhen, Nobuo Takai, Michiko Shigefuji, Masayoshi Ichiyanagi, Tsutomu Sasatani

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

A rapid visual damage assessment of buildings around four strong-motion seismic stations in Kathmandu Valley was carried out after the damaging Gorkha, Nepal earthquake (Mw7.8) of 25 April 2015. The waveforms of the main shock recorded at these stations were compared with the damage to buildings around the stations. The damage was found to be related to strong-motion characteristics of the earthquake. A dominance of long-period oscillation could be observed in the records. The damage to low-rise buildings in the valley was less than anticipated from an earthquake of this magnitude given that the majority of buildings were built without proper engineering consideration. The acceleration response spectra of one of the sedimentary sites show high response in the 1–2 s period range, and nearly 10% of the buildings, which were all low-rise, suffered damage around this site.

Original languageEnglish
Pages (from-to)S219-S242
JournalEarthquake Spectra
Volume33
Issue numberSpecial issue 1
DOIs
Publication statusPublished - Dec 2017

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Nepal
damage assessment
strong motion
Earthquakes
earthquakes
stations
earthquake
damage
valleys
valley
oscillation
waveforms
engineering
shock
station
oscillations

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology
  • Geophysics

Cite this

Strong-motion characteristics and visual damage assessment around Seismic stations in Kathmandu after the 2015 Gorkha, Nepal, Earthquake. / Bijukchhen, Subeg; Takai, Nobuo; Shigefuji, Michiko; Ichiyanagi, Masayoshi; Sasatani, Tsutomu.

In: Earthquake Spectra, Vol. 33, No. Special issue 1, 12.2017, p. S219-S242.

Research output: Contribution to journalArticle

Bijukchhen, Subeg ; Takai, Nobuo ; Shigefuji, Michiko ; Ichiyanagi, Masayoshi ; Sasatani, Tsutomu. / Strong-motion characteristics and visual damage assessment around Seismic stations in Kathmandu after the 2015 Gorkha, Nepal, Earthquake. In: Earthquake Spectra. 2017 ; Vol. 33, No. Special issue 1. pp. S219-S242.
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