Seismic response of the outer shell of a liquefied natural gas storage tank using a semi-analytical dynamic substructuring technique Online publication date: Sat, 29-Oct-2016
by Apostolos Tsouvalas; Andrei V. Metrikine
International Journal of Earthquake and Impact Engineering (IJEIE), Vol. 1, No. 1/2, 2016
Abstract: This paper deals with the seismic response of the outer shell of a liquefied natural gas storage tank. The concrete shell is considered as three inhomogeneous subsystems, namely; a circular plate of varying thickness on an elastic foundation, a cylindrical wall and a spherical dome. The linear dynamic response of the complete system, subjected to a strong seismic ground motion, is derived in the frequency domain using a semi-analytical approach. The concept of frequency- and wavenumber-dependent dynamic spring stiffness is introduced for the exact satisfaction of the displacement continuity and force equilibrium at the interfaces between the three subsystems. The ground motion is described kinematically in the form of a Rayleigh wave propagating along the free surface of the soil. The influence of the Rayleigh wave speed and of the interference of the structural responses to the horizontal and the vertical seismic ground motion are examined for a particular case.
Online publication date: Sat, 29-Oct-2016
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Earthquake and Impact Engineering (IJEIE):
Login with your Inderscience username and password:
Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.
If you still need assistance, please email firstname.lastname@example.org