1995
DOI: 10.1002/stc.4300020203
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Nonlinear response of structures with sliding base isolation

Abstract: It is accepted that sliding or friction base isolation systems effectively protect structures subjected to severe earthquakes. Precise modeling of the sliding connection is, however, still difficult since various parameters influence the friction coefficient. Simplified models, such as those based on a constant friction coefficient, are convenient to understand the behavior of sliding structures and to identify general trends. However, this article shows that for final structural designs (and in particular if … Show more

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Cited by 9 publications
(6 citation statements)
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“…To comply with the available testing facility, the present study was conducted on a one‐third scaled structural mock‐up of about 8000 kg mass, under the application of unidirectional ground motion time histories. The isolating devices were scaled to respect the geometric similitude requirements, but because of the strong non‐linearities introduced by friction, it is questionable how much the response of the scaled prototypes reflects the behaviour of real‐scale isolators . The unidirectional excitation represents another important simplification because, during the earthquake, isolation devices are in general subjected to the effect of general three‐dimensional acceleration time histories.…”
Section: Discussionmentioning
confidence: 99%
“…To comply with the available testing facility, the present study was conducted on a one‐third scaled structural mock‐up of about 8000 kg mass, under the application of unidirectional ground motion time histories. The isolating devices were scaled to respect the geometric similitude requirements, but because of the strong non‐linearities introduced by friction, it is questionable how much the response of the scaled prototypes reflects the behaviour of real‐scale isolators . The unidirectional excitation represents another important simplification because, during the earthquake, isolation devices are in general subjected to the effect of general three‐dimensional acceleration time histories.…”
Section: Discussionmentioning
confidence: 99%
“…Tests performed on CSSs demonstrate, among others, the non‐negligible effects of the two horizontal components of motion which lead to lower friction and, consequently, damping, because of larger heating. Such tests also demonstrate the need for full‐scale testing as similarity laws do not apply because of the strong non‐linearities of devices based on sliding friction .…”
Section: Discussionmentioning
confidence: 99%
“…In order to analyze the dynamic response of structures with sliding systems, two different numerical models, namely conventional friction and continuous hysteretic models, are mainly used by researchers in the past. In the conventional model, the frictional force of the isolation system is evaluated by solving different set of equations for sliding and non-sliding phases [37]. On the other hand, the hysteretic model is a continuous model, and the frictional force can be obtained from a modified viscoplastic model developed by Constantinou et al [38].…”
Section: Modeling Of the Five-span Continuous Bridgementioning
confidence: 99%