Seismic Analysis of Intze Type Elevated Service Reservoir Using Different Methods

Abstract

Abstract Water is basic need of every creation. Water supply scheme in each village and city needed with elevated service reservoir (ESR) for distribution of water with gravity. Water is importance during disaster like earthquake, tsunami etc. The elevated service reservoirs are essential part of the water supply schemes in the various part of the world. Intze type of water tank has economical design for large capacity of water storage. In this paper, seismic analysis of Intze tank for a given capacity are presented for two ratios of height to diameter, viz. H = 1/3 D and H = 2/3 D. The seismic analysis of tank with staging is presented here briefly. Two cases are studied by doing seismic analysis by three methods. 1. Linear Static Analysis, 2. Response Spectrum Analysis 3. Linear Time History Analysis. Final results are compared and concluded. It is observed that the shallower tank with H = 1/3D having more stability among the two cases considered. Base shear in time history analysis is more and in response spectrum method is less as compared to IS 1893-part 2 method.