Numerical Modeling of the Behavior of Base Plates with Various Degrees of Rigidity Under Cyclic Loads

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Rahimi, Javad | 2014

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 46238 (09)
University: Sharif University of Technology
Department: Civil Engineering
Advisor(s): Khonsari, Vahid
Abstract:
Due to the important role of base plates, both in transferring forces from the structure to the foundation, and also in transferring vibrations from soil to the structure, it is necessary to have sufficient knowledge on their behaviour and performance under monotonic and cyclic loading regimes. In fact, the behaviour of the supports of any structure cannot be identified without identifying the behaviour of its base plates. Numerous configurations with/without various types of attachments have been proposed and used for base plates. In this work, altogether six commonly-used types of base plates were studied and their behaviour under monotonic and cyclic loadings was obtained using commercial finite element software. Cyclic loading characteristic parameters, namely energy absorption ratio, total ductility ratio, strength ratio, and rigidity ratio for these base plates were obtained and compared. One of the important outcomes of this study, obtained by comparing the results of models 1 & 5, shows that to have a stiffer response under monotonic loading does not necessarily mean that under cyclic loading the same trend exists
Keywords:
Finite Element Modeling ; Cyclic Loading ; Moment-Rotation Curve ; Semirigid Base Plate ; Cyclic Characteristic Parameters

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