FFECTS OF SOIL CONDITION ON RESPONSE REDUCTION FACTOR OF ELEVATED RC WATER TANK

Abstract

in the present study, a RC framed staging elevated tank is considered to evaluate the response reduction
factor with and without considering the effects of flexibility of soil. The existing elevated RC water tank is analyzed using
displacement controlled non-linear static pushover analysis to evaluate the base shear capacity and ductility of tank with
and without considering soil-flexibility. Three different types of soil conditions representatives of hard soil, medium soil
and soft soil has been considered in this study. It is observed that flexibility of supporting soil has considerable effect on
response reduction factor, time period and overall performance of water tank indicating that idealization of fixity at base
may be seriously erroneous in soft soils.