Latest issueAnalysis of Kinematics of the Earthquake at the «Kashivazaki-Kariva» Nuclear Power Plant
Authors:
Sergey S. Nefedov
Cand. Sci. (engineering), Chairman of the section “Strength and reliability of civil constructions of buildings and structures” of Expert council for certification of computer programs in Federal Environmental, Industrial and Nuclear Supervision Service “Rostechnadzor”. Moscow, Russian Federation
Rubric: Theoretical and experimental studies
Annotation:
In present article are considered seismic acceleration data (accelerogramms) recorded at the site of the NPP Kashivazaki-Kariva (Japan) at the earthquake of 16.07.2007 with epicenter in Japan see. As a result of the earthquake some buildings, structures and infrastructure objects of NPP were damaged. As marked in the report of the mission of International Atomic Energy Agency (IAEA), significant part of these damages was caused by big displacements of the soils.
Site of NPP was provided by the net of accelerometers located at different levels and oriented at three cardinal directions. At the time of earthquake the accelerometers were in operating state, and the records of accelerations (accelerogramms) were obtained. In present work evaluation of the velocities of seismic oscillations and evaluation of seismic displacements of soils were fulfilled on the base of analysis of three-component accelerogramm recorded at the free surface of the soil.