Journal article
DYNAMIC RESPONSE OF PILE SUPPORTED FRAME FOUNDATIONS


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Publication Details
Author list: Fakhry Aboul-Ella and Milos Novak
Publisher: American Society of Civil Engineers. Engineering Mechanics Division
Publication year: 1980
Journal: Journal of the Engineering Mechanics Division
Journal name in source: JOURNAL OF THE ENGINEERING MECHANICS DIVISION-ASCE
Volume number: 106
Issue number: 6
Start page: 1215
End page: 1232
Number of pages: 18
ISSN: 0044-7951
Web of Science ID: A1980KS65000011
PubMed ID:
Scopus ID: 0019210187
eISSN: 0044-7951


A theoretical approach is analyzed of the dynamic response of pile-supported frame foundations of turbomachineries to rotor unbalances. The approach includes dynamic interaction of soil, piles, flexible foundation mat, three-dimensional structural frame, flexible rotor, and viscoelastic oil film in journal bearings. The approach employs substructuring, dynamic stiffness method, and finite elements. Shear deformations and material damping are included in the stiffness matrices of the finite elements that are complex and frequency dependent. The stiffness matrix of the element is generalized to incorporate the stiffness and damping of the supporting medium including piles. It was found that soil-structure interaction markedly affects the response of the frame as well as the rotors in the lowest resonant regions. In the vicinity of a high operating speed, soil-structure interaction can be neglected.


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Last updated on 2019-26-05 at 13:52