Seismic Analysis and Optimization of RC Elevated Water Tank Using Various Staging Patterns

摘要

As known from very upsetting experiences, poorly designed elevated water tanks were heavily damaged or collapsed during earthquakes. This might be due to the lack of knowledge regarding the behaviour of supporting system of the tank, and also due to improper selection of geometry of staging patterns. For certain proportions of the tank and the structure, the sloshing of the water during earthquake may be one of the dominant factors.Dynamic analysis of tank containing liquid is complex involving fluid-structure interaction.In this paper, the seismic behavioural effect of circular elevated water tank is studied for specific capacity of tank for various staging arrangements in plan, variation in number of periphery columns and variation in number of stages in elevation