کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
311830 534146 2014 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Reliability based life cycle cost optimization for underground pipeline networks
ترجمه فارسی عنوان
بهینه سازی هزینه های چرخه عمر با قابلیت اطمینان برای شبکه های زیرزمینی خط لوله
کلمات کلیدی
بهینه سازی ریسک و هزینه احتمال شکست الگوریتم ژنتیک، روش اصلاح لوله، هزینه چرخه زندگی هزینه خراب، شاخص وضعیت
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات مهندسی ژئوتکنیک و زمین شناسی مهندسی
چکیده انگلیسی


• This paper is concerned with estimating flexible pipe reliability due to corrosion.
• The study has been extended to determine intervention year for maintenance.
• The proposed maintenance strategy also enables decision maker to select appropriate renewal methods.
• A numerical example is presented to validate the proposed maintenance strategy.

The safety of underground pipelines is the primary focus of water and wastewater industry. Due to low visibility and lack of proper information regarding the condition of underground pipes, assessment and maintenance are frequently neglected until a disastrous failure occurs. The reduction of pipe thickness due to corrosion undermines the pipe resistance capacity which in turn reduces the factor of safety of the whole distribution system. Providing an acceptable level of service and overcoming practical difficulties, the concerned industry has to plan how to operate, maintain and renew (repair or replace) the system under the budget constraints. This paper is concerned with estimating reliability of non-pressure flexible underground pipes subjected to externally applied loading and material corrosion during the whole service life. The reliability with respect to time due to corrosion induced deflection, buckling, wall thrust, bending stress is estimated. Then the study is extended to determine intervention year for maintenance and to identify the most appropriate renewal solution by minimizing the risk of failure and whole life cycle cost using Genetic Algorithm (GA). An example is presented to validate the proposed method with a view to prevent unexpected failure of flexible pipes at the minimal cost by prioritizing maintenance based on failure severity and system reliability.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tunnelling and Underground Space Technology - Volume 43, July 2014, Pages 32–40
نویسندگان
, , , ,