Seismic design of cylindrical tank. 5th Report. Seismic response analysis of tank on elastic foundation.

This study concerns the seismic design of a cylindrical liquid storage tank with rigid foundation resting on elastic soil subjected to earthquake ground motions. The study is composed of the following two main parts: (a) the derivation of a vibration model for a cylindrical tank as a super-structure, and (b) the derivation of a whole vibration model for a tank-foundation-soil system, and the seismic response computation of the system. The previous paper dealt with the former part(a). This paper deals with the latter part(b), and describes, (1) the derivation procedure of a whole vibration model of a cylindrical tank-foundation-soil system, (2) the application of modal analysis to the derived model, and (3) the proposal of a conventional seismic design procedure for a cylindrical liquid storage tank with rigid foundation resting on elastic soil to earthquake ground motions.