کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
267680 504409 2011 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Time-dependent performance indicators of damaged bridge superstructures
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات مهندسی ژئوتکنیک و زمین شناسی مهندسی
پیش نمایش صفحه اول مقاله
Time-dependent performance indicators of damaged bridge superstructures
چکیده انگلیسی

The ability of a structure to survive an extreme event without collapse reduces in time due to deterioration processes. Therefore, in the lifetime management of structures and infrastructures, the resistance to sudden local damage has to be considered together with the effect of progressive deterioration. The aim of this paper is to present a framework for computation of time-dependent performance indicators of civil structures and infrastructures, with emphasis on bridges, including reliability, vulnerability, robustness and redundancy. A brief theoretical background and selected structural performance indicators regarding vulnerability, redundancy and robustness are presented. The approach is based on probabilistic performance assessment supported by finite element analysis and applied to an existing bridge. Time-variation of vulnerability, redundancy and robustness associated with various damage scenarios under uncertainty and the effects of several loading conditions on performance are investigated.


► Finite element method to assess bridge superstructure load carrying capacity.
► Performance is quantified in a probabilistic manner for various damage cases.
► Reliability, vulnerability, redundancy and robustness are time-dependent indicators.
► Performance deterioration is due to corrosion and live load increase.
► Performance highly depends on the loading conditions under consideration.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Structures - Volume 33, Issue 9, September 2011, Pages 2458–2471
نویسندگان
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