کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
307709 513394 2009 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Lifetime reliability-based optimization of reinforced concrete cross-sections under corrosion
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
Lifetime reliability-based optimization of reinforced concrete cross-sections under corrosion
چکیده انگلیسی

This paper presents a lifetime reliability-based approach to the optimization of reinforced concrete (RC) cross-sections in an aggressive environment. The lifetime structural performance is evaluated by using a general methodology for time-variant analysis of RC structures subjected to diffusive attacks from aggressive agents with corrosion of the reinforcement. The lifetime probabilistic optimization is formulated at the cross-sectional level and is aimed to minimize the material cost under a time-dependent constraint on the structural reliability. The optimization problem is solved by combining a discrete gradient-based optimization method with a Monte Carlo simulation. The obtained results demonstrate that in a lifetime-oriented design the amount and location of the steel reinforcement and the value of the concrete cover play a crucial role for the optimal achievement of the desired lifetime structural performance.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Structural Safety - Volume 31, Issue 6, November 2009, Pages 483–489
نویسندگان
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