Time History Analysis of an Elevated Water Tank Under Different Ground Motions
Srikanth S, Savithri Karanth
Elevated water tank, Time history Analysis, Water filling conditions, Seismic Response.
Elevated water tank is one of the most important structures in earthquake event. Elevated water tank is constructed for holding water at a certain height to pressurize the water distribution system. As known from very upsetting experiences, elevated water tanks were heavily damaged or collapsed during earthquake. Due to the high sensitivity of the elevated water tanks to the earthquake characteristics such as peak ground acceleration, frequency contents and the duration of earthquake records.The present work aims to understand the dynamic behavior of elevated water tank combined with UG sump under different earthquake recorded ground motions. Time History Analysis was carried out for an elevated RCC square water tank having different staging heights of 14 m, 17 m and 20 m under different five earthquake ground motions analyzed using StaadPro software.The tank responses such as Roof Displacement, Velocity, Acceleration, Base Shear, Drift and Natural frequency were observed and the results were compared for empty, half and full tank water fill conditions. The maximum seismic responses were observed in Bhuj earthquake and minimum in Kobe earthquake ground motion.
Article Details
Unique Paper ID: 144734

Publication Volume & Issue: Volume 4, Issue 2

Page(s): 307 - 315
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