Investigation and analysis of seismic damage of rural buildings caused by Ms6.2 earthquake in Jishishan of Gansu Province
Jishishan earthquake caused serious damages to buildings in some areas of Gansu Province and Qinghai Province.The seismic damages of rural buildings at 11 survey points were investigated in areas with seismic intensities of 7 and 8 degrees.The seismic damage investigation shows that the earthquake disaster regions are mainly areas of towns and villages,and the main types of house structures are civil structure,brick and wood structure and unfortified brick concrete structure.In areas with intensity 8 degree,houses of civil structure mainly perform as severely damaged or collapsed.Brick wood structure and unfortified brick concrete structure houses were mainly damaged moderately and severely.Fortified brick concrete and reinforced concrete frame structure houses were damaged slightly and moderately.In areas with intensity 7 degree,civil structure houses were mainly damage moderately.Brick wood structure and unfortified brick concrete structure houses mainly damage slightly and moderately.Fortified brick concrete and reinforced concrete frame structure houses were mainly damaged slightly and basically intact.The seismic damage caused by the earthquake is more severe than that of earthquakes with the same magnitude,which is related to factors such as the amplification effect of ground-motion peak values of complex terrain in the earthquake area,poor quality of building masonry,and unreasonable structural stress of buildings.It is recommended to carry out further research on site amplification effect and spectrum impact of complex terrain,and attach importance to the earthquake resistance promotion and practical technology development of non-structural components of buildings.
Jishishan earthquakeseismic damage of rural buildingsconstruction measuressite amplification effectnon-structural components
NETL
NSTL
万方数据
维普
