Yazarlar
- Dogangun, A.(1)
- Doǧangün, A.(1)
- Livaoglu, R.(1)
- Livaoǧlu, R.(1)
Yayınlar
- MakaleYalnız künye2007Scopus SJRQ1Effect of foundation embedment on seismic behavior of elevated tanks considering fluid-structure-soil interaction
Livaoglu, R.; Dogangun, A.
This paper investigates the effects of foundation embedment on the seismic behavior of fluid-elevated tank-foundation-soil system with a structural frame supporting the fluid containing tank. Six different soil types defined in the well-known seismic codes were considered. Both the sloshing effects of the fluid and soil-structure interaction of the elevated tanks located on these six different soils were included in the analyses. Fluid-elevated tank-foundation-soil systems were modeled with the finite element (FE) technique. The fluid-structure interaction was taken into account using Lagrangian fluid FE approximation implemented in the general purpose structural analysis computer program, ANSYS. FE model with viscous boundary was used to include elevated tank-foundation-soil interaction effects. The models were analyzed for the foundations with and without embedment. It was found that the tank roof displacements were affected significantly by the embedment in soft soil, however, this effect was smaller for stiff soil types. Except for soft soil types, embedment did not affect the other response parameters, such as sloshing displacement, of the systems considered in this study.
AtıfScopus116OpenAlex109
İncele - MakaleYalnız künye2006Scopus SJRQ1Simplified seismic analysis procedures for elevated tanks considering fluid-structure-soil interaction
Livaoǧlu, R.; Doǧangün, A.
This paper presents a review of simplified seismic design procedures for elevated tanks and the applicability of general-purpose structural analyses programs to fluid-structure-soil interaction problems for these kinds of tanks. Ten models are evaluated by using mechanical and finite-element modelling techniques. An added mass approach for the fluid-structure interaction, and the massless foundation and substructure approaches for the soil-structure interactions are presented. The applicability of these ten models for the seismic design of the elevated tanks with four different subsoil classes are emphasized and illustrated. Designers may use the models presented in this study without using any fluid and/or special soil elements. From the models defined here, single lumped-mass models underestimate the base shear and the overturning moment. Because almost all the other assumptions for the fixed base give similar results, any method could be used, but the distributed added mass with the sloshing mass is more appropriate than the lumped mass assumptions for finite-element modelling, and is recommended in this study.
AtıfScopus126OpenAlex139İncele