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Dynamic Tests of LNG Storage Tanks for Earthquake Analysis of Liquid-Tank-Pile-Soil Interaction

by William E. Gates, Dames & Moore, Los Angeles, CA, USA,
David P. Hu, Dames & Moore, Los Angeles, CA, USA,
Lawrence Selna, Dames & Moore, Los Angeles, CA, USA,



Document Type: Proceeding Paper

Part of: Dynamic Response of Structures

Abstract:

This paper presents a field test procedure for determining the dynamic properties of large liquid natural gas (LNG) storage tanks under operating conditions. Two methods of vibratory excitation were used to produce varying levels of strain within the vessels and foundation soils to assess strain dependent stiffness and damping characteristics of the liquid-tank-pile-soil system. Results from the test program were used to verify mathematical two-dimensional and three-dimensional finite element models of the tank foundation system for use in dynamic earthquake analysis.

Subject Headings: Storage tanks | Dynamic tests | Finite element method | Dynamic properties | Dynamic analysis | Soil-structure interaction | Soil-pile interaction

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