Soil-structure-water interaction of intake-outlet towers allowed to uplift (EN)

Spyrakos, CC (EN)

Xu, C (EN)

A procedure that can be used for preliminary seismic analysis of intake-outlet towers including soil-structure-water interaction is developed. The formulation also considers the effect of partial soil-foundation separation, a phenomenon of considerable interest for the design of such systems that has not been addressed in the literature. The hydrodynamic pressure of the water is accounted for through added masses given in concise closed-form expressions for easy use in analysis and design. The nonlinear equations of motion, based on foundation-soil bond conditions, are solved numerically. The effects of soil-structure-water interaction are evaluated for a representative intake-outlet tower. Parametric studies are also conducted in the presence and absence of surrounding and contained water for typical cases of soil conditions and tower height-foundation width ratios. The results indicate that hydrodynamic effects are significant and cause an increase in deflections, moments and shears and a decrease in foundation rotation. The study shows that for short towers, foundation uplift is unlikely to occur. On the contrary for slender towers, uplift is more likely to appear, especially for foundations supported by stiff soil, causing significant decrease in moments and deflections. © 1997 Elsevier Science Limited. All rights reserved. (EN)

journalArticle (EN)

Geosciences, Multidisciplinary (EN)

Dynamic response (EN)

Towers (EN)

Structural design (EN)

Nonlinear equations (EN)

Pressure effects (EN)

Earthquake resistance (EN)

Hydrodynamics (EN)

Moments (EN)

hydrodynamics (EN)

Equations of motion (EN)

Foundation uplift (EN)

seismic analysis (EN)

Foundations (EN)

Engineering, Geological (EN)

Deflection (structures) (EN)

soil/structure interaction (EN)

Mathematical models (EN)

Soil structure interactions (EN)

Seismic response (EN)

National Technical University of Athens

Digital Library of National Technical University of Athens | Dspace@NTUA

Κεντρική Βιβλιοθήκη Ε.Μ.Π.

Ιδρυματικό Αποθετήριο

Δημοσιεύσεις μελών Δ.Ε.Π. σε περιοδικά

Soil Dynamics and Earthquake Engineering (EN)

English

1997 (EN)

http://hdl.handle.net/123456789/12448

2 (EN)

16 (EN)

159 (EN)

151 (EN)

0267-7261 (EN)

ISI:A1997WH67200006 (EN)

ELSEVIER SCI LTD (EN)