The Spitak, Armenia earthquake of 7 December 1988 : why so much destruction.
Material type:
TextLanguage: ENG Publication details: 1993Description: 24 p. : ill., mapsSubject: For a moderate earthquake (M "SUB s" = 6.8), the Spitak, Armenia earthquake of 7 December 1988 caused unprecedented destruction and fatalities. Unlike other destructive earthquakes, a coordinated research to understand the circumstances and conditions that led to the extensive damage from the earthquake has not yet been adequately carried out. This paper pieces together the little and uncoordinated research that has been accomplished to-date to form a comprehensive view of why so much destruction occurred. The main factors appear to be the unusual ground motion where, within a span of 40 s, two significant events followed each other; the lack of adequate seismic design considerations such as ductility in precast joints and vertical accelerations in the absence of adequate factors of safety for dead and live load design; unique microzonation practices that could change the design basis by a factor of four within a distance of only 1-2 km; and a host of other issues in structural analysis, concrete technology and city planning
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Australian Emergency Management Library | BOOK | 363.3495095662 SPI (Browse shelf(Opens below)) | Available | 005729035 |
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Bibliography: p. 22
Reprinted from Soil Dynamics and Earthquake Engineering; 1993; Vol. 12; No. 1; p. 1-24
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For a moderate earthquake (M "SUB s" = 6.8), the Spitak, Armenia earthquake of 7 December 1988 caused unprecedented destruction and fatalities. Unlike other destructive earthquakes, a coordinated research to understand the circumstances and conditions that led to the extensive damage from the earthquake has not yet been adequately carried out. This paper pieces together the little and uncoordinated research that has been accomplished to-date to form a comprehensive view of why so much destruction occurred. The main factors appear to be the unusual ground motion where, within a span of 40 s, two significant events followed each other; the lack of adequate seismic design considerations such as ductility in precast joints and vertical accelerations in the absence of adequate factors of safety for dead and live load design; unique microzonation practices that could change the design basis by a factor of four within a distance of only 1-2 km; and a host of other issues in structural analysis, concrete technology and city planning
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