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Title:Experimental seismic investigation of appendages in structures
Author(s):Segal, David
Doctoral Committee Chair(s):Hall, William J.
Department / Program:Civil and Environmental Engineering
Discipline:Civil Engineering
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Engineering, Civil
Abstract:In this study, the behavior of light appendages mounted in structures that respond inelastically to earthquakes was examined experimentally.
A simple interpretation of an elastic detuned appendage is derived. It is shown that the tuned appendage can be considered as a limiting case of the detuned appendage and that the transition can be approximated using the slightly detuned appendage.
In the case of a SDOF inelastic supporting structure, the actual structure is replaced by an equivalent linear system. In the case of a MDOF inelastic supporting structure, the concept of modal ductility is used to obtain equivalent linear modes.
A series of experiments of SDOF appendages mounted on one- and two-story structures was performed. The combined systems were subjected to earthquake motions. A good agreement was obtained between the measurements and the maximum appendages responses evaluated using the suggested procedure.
The main conclusion of this study is that the concepts of equivalent linear system and modal ductility provide a good tool for estimating the maximum response of an appendage mounted on an inelastic supporting structure. The expected accuracy is about the same for elastic and inelastic supporting structures.
Issue Date:1989
Rights Information:Copyright 1989 Segal, David
Date Available in IDEALS:2011-05-07
Identifier in Online Catalog:AAI8924939
OCLC Identifier:(UMI)AAI8924939

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