Strong-Motion Characteristics and Visual Damage Assessment Around Seismic Stations in Kathmandu after the 2015 Gorkha, Nepal, Earthquake

Autor:	Masayoshi Ichiyanagi, Tsutomu Sasatani, Michiko Shigefuji, Nobuo Takai, Subeg Bijukchhen
Rok vydání:	2017
Předmět:	Geophysics 010504 meteorology & atmospheric sciences 010502 geochemistry & geophysics Geotechnical Engineering and Engineering Geology 01 natural sciences Seismology Motion (physics) Geology 0105 earth and related environmental sciences
Zdroj:	Earthquake Spectra. 33:219-242
ISSN:	1944-8201 8755-2930
DOI:	10.1193/042916eqs074m
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8aafaf991c07e6a06ec77960242c1ad4 https://doi.org/10.1193/042916eqs074m Zobrazit plný text záznamu