Survey report on road damage caused by the 2015 Gorkha earthquake, Nepal

Takashi Kiyota, T Ikeda, Katsu Goda, Rama Mohan Pokhrel, Gabriele Chiaro, T Katagiri

Research output: Contribution to journalArticle (Academic Journal)peer-review

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Abstract

This report summarizes road damage related to geotechnical problems caused by the 2015 Gorkha Earthquake, which were observed during a field survey conducted by a survey team dispatched by the Japan Society of Civil Engineers (JSCE) and Japan Geotechnical Society (JGS). In Kathmandu City, an embankment of the Araniko Highway, which connects Kathmandu to Bhaktapur, suffered from damage due to subsidence. Ground fissures, tilting of buildings and road pavement damage were also observed in the surrounding area. A microtremor measurement indicates small stiffness or thick soft soil layer at the heavily-damaged area. On the other hand, reinforced retaining walls demonstrated good performance against the earthquake. In mountainous areas, traces of medium scale landslides and rockfalls along roads were frequently observed. A large number of steep slopes failed at shallow depth in the epicentral area, and their scale in terms of quantity and size tends to increase as approaching the epicenter.
Translated title of the contributionSurvey report on road damage caused by the 2015 Gorkha earthquake, Nepal
Original languageOther
Pages (from-to)934-939
Number of pages6
JournalJournal of Japan Society of Civil Engineers, Ser. A1
Volume72
Issue number4
Early online date20 May 2016
DOIs
Publication statusPublished - 1 Aug 2016

Keywords

  • Nepal Gorkha earthquake
  • damage survey
  • road damage
  • microtremor measurement

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