Soil–structure interaction in dynamic behaviour of elevated tanks with alternate frame staging configurations

2004 ◽  
Vol 277 (4-5) ◽  
pp. 825-853 ◽  
Author(s):  
Somnath Dutta ◽  
Aparna Mandal ◽  
Sekhar Chandra Dutta
Keyword(s):  
Soil Structure ◽  
Dynamic Behaviour ◽  
Soil Structure Interaction ◽  
Structure Interaction ◽  
Elevated Tanks

A numerical study on the influences of underlying soil and backfill characteristics on the dynamic behaviour of typical integral bridges

Bauingenieur ◽  
2020 ◽  
Vol 95 (11) ◽  
pp. S 2-S 11
Author(s):  
H. D. B. Aji ◽  
M. B. Basnet ◽  
Frank Wuttke
Keyword(s):  
Soil Structure ◽  
Dynamic Behaviour ◽  
Numerical Study ◽  
Coupled System ◽  
Soil Structure Interaction ◽  
Dynamic Resistance ◽  
Soil Characteristic ◽  
Structure Interaction ◽  
Integral Bridges ◽  
Underlying Soil

Abstract The identification of the dynamic behaviour of a structure is one of the crucial steps in the design of the dynamic resistance of the structure. The dynamic behaviour is represented by the natural frequencies and damping which are subsequently used along with the considered dynamic actions in the design process. In regard of integral bridge concept, one of the consequences of the omission of joints and bearings is the substantial soil-structure interaction which in turn increases the sensitivity of the dynamic behaviour of the bridges to the surrounding soil characteristic. In this article, we extended our hybrid BEM-FEM steady-state dynamic numerical tool to the 3D regime, developed by utilizing an in-house BEM and the commercial FEM software ABAQUS and use it to analyse the dynamic interaction between the bridge and the underlying soil as well as the backfill. The numerical results from four typical integral bridges show that underlying soil characteristic has great effect on the resonant frequencies and the damping. The backfill material properties tend to have less significant role due to the abutment wingwalls dominating the force transfer between the soil and the superstructure. The results also show that the degree of influence of the soil-structure interaction on the coupled system is affected by the type of load pattern in addition to the flexural stiffness of the superstructure.

Dynamic behavior of elevated tanks with soil–structure interaction

2009 ◽  
Vol 31 (11) ◽  
pp. 2617-2629 ◽  
Author(s):  
Sekhar Chandra Dutta ◽  
Somnath Dutta ◽  
Rana Roy
Keyword(s):  
Dynamic Behavior ◽  
Soil Structure ◽  
Soil Structure Interaction ◽  
Structure Interaction ◽  
Elevated Tanks

Importance of seismic site response and soil–structure interaction in dynamic behaviour of a tall building

Géotechnique ◽  
2015 ◽  
Vol 65 (5) ◽  
pp. 391-400 ◽  
Author(s):  
E. Bilotta ◽  
L.De Sanctis ◽  
R. Di Laora ◽  
A. D'Onofrio ◽  
F. Silvestri
Keyword(s):  
Soil Structure ◽  
Dynamic Behaviour ◽  
Site Response ◽  
Tall Building ◽  
Soil Structure Interaction ◽  
Structure Interaction ◽  
Seismic Site Response

Effect of foundation flexibility on seismic response of reinforced concrete TV-towers

2001 ◽  
Vol 28 (3) ◽  
pp. 465-481 ◽  
Author(s):  
Amir M Halabian ◽  
M Hesham El Naggar
Keyword(s):  
Reinforced Concrete ◽  
Soil Structure ◽  
Dynamic Behaviour ◽  
Bending Moment ◽  
Soil Structure Interaction ◽  
Earthquake Ground Motion ◽  
Element Formulation ◽  
Base Shear ◽  
Deep Foundation ◽  
Structure Interaction

The analysis of tall reinforced concrete TV-towers is commonly simplified by assuming a fixed base and ignoring the effect of soil–structure interaction. However, the foundation flexibility affects the dynamic characteristics of tall structures and influences their dynamic behaviour. To design these towers for dynamic loading, the fundamental natural periods, base bending moment, and base shear force as the most important parameters are needed and must be evaluated properly. In the current study, a finite element formulation for the response analysis of TV-towers subjected to earthquake ground motion accounting for soil–structure interaction is presented. The effects of foundation flexibility on the dynamic behaviour of TV-towers were evaluated for two different types of foundation, shallow footing and deep foundation, and various soil profiles. A typical example for these towers is analysed and the results for a range of soil dynamic parameters are presented. It was found that the foundation flexibility increases the natural periods, alters the natural mode shapes, and decreases the base bending moment. It was also concluded that the effect of soil–structure interaction may have a large effect on the base shear of the tower and should be considered in the analysis, especially for the design of horizontal reinforcement.Key words: soil–structure interaction, TV-towers, natural period, base forces, foundation flexibility.

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