Influence of sliding velocity and contact pressure on the seismic response of base isolated structures
Publish place: 02nd National Conference on Retrofiting of Iran
Publish Year: 1386
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
INRC02_020
تاریخ نمایه سازی: 24 اردیبهشت 1386
Abstract:
This study is performed to evaluate the effect of changes in the coefficient of friction of the seismic response of frictional base isolated buildings. The building is modeled as a simplified single-story structure resting on a sliding support. A node to point contact element is used for modeling frictional isolation. The frictional forces mobilized at the sliding support are assumed to have a hysteretic plasticity behavior. The effects of coupling of stiffnesses of orthogonal directions between he sliding planes have been taken into consideration. The three-component earthquake analysis of the system is performed for EI Centro 1940 and Northridge 1994 earthquakes. The response of the system with that when the coefficient of friction is a function of sliding velocity and contact pressure. It is found that the changes of the coefficient of friction can highly affect the response of a frictional isolated structure.
Keywords:
frictional base isolated structure , three - component earthquake , friction coefficient , sliding velocity , contact pressure
Authors
Faramarz Khoshnoudian
Assistant Professor
Vahid Reza Haghdoust
Msc student
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