Site Specific Ground Response Study of Deep Indo-Gangetic Basin Using Representative Regional Ground Motions

摘要

Massive damages due to repeated earthquake are evidenced since ancient times when compared to any other natural hazard. Such damages are not directly due to earthquakes but due to site effects and induced effects such as liquefaction. Earthquakes cannot be predicted precisely, but catastrophic damages and human loss due to earthquakes can be minimized by estimating earthquake hazard parameters. India is experiencing earthquake damages since 1200 AD, though very limited attempt have been made to estimate seismic hazard parameters on regional scale. Present study focuses on estimating spectral character of deep soils of Lucknow located close to Himalayan seismic belt. A detailed deterministic hazard analysis has been carried out at bedrock level. Subsurface stratums of study area have been investigated using Standard penetration tests and shear wave velocity profiling, which were used for seismic site classification. Site specific response analysis has been carried out using representative ground motions and local subsurface details.