ABSTRACT
ABSTRACT: The Jinnah project is a multi-purpose project in Pakistan and involves the construction of complex multi-orifice three-dimensional structures. It is located within an active seismic zone. The power station structure was designed in China using a conventional approach which incorporates seismic loading as an applied horizontal force. Because of concerns over the safety of the power house when subjected to seismic vibrations a Finite Element Analysis (FEA) was undertaken of the facility to confirm the adequacy of the conventional design. This complex process was undertaken using a mode-superposition response spectrum method. The result of analyses indicated that; response of the powerhouse structure to seismic disturbance was rather intense, seismic induced internal forces were high, induced displacements were large, the concrete required more reinforcement at certain locations.
