دانلود رایگان مقاله لاتین پل خرپا راه آهن از سایت الزویر
عنوان فارسی مقاله:
ارزیابی فرسودگی قابلیت اطمینان پیری پل خرپا راه آهن: معقول بودن رویکرد احتمالاتی زندگی استرسی
عنوان انگلیسی مقاله:
Fatigue reliability assessment of ageing railway truss bridges: Rationality of probabilistic stress-life approach
سال انتشار : 2016
برای دانلود رایگان مقاله پل خرپا راه آهن اینجا کلیک نمایید.
مقدمه انگلیسی مقاله:
1. Introduction
Majority of the railway bridges in the world are exceeding their design lives and bridge authorities are working on precise life extension methods [1–3]. As a result, a significant amount of research are ongoing for development of precious structural health monitoring and life assessment methods [2–12]. As railway bridges are vulnerable for time-dependent fatigue damage due to cyclic nature of traffic loads, the assessment of remaining fatigue life of railway bridges for continuing services has become more important than ever, especially when making decisions regarding structure replacement and other major retrofits. However, this task is difficult due to the increase of axel load and corrosion deterioration on bridges. The fatigue assessment of structures is mainly done by either deterministic or probabilistic approach. Most of deterministic fatigue assessment approaches of railway bridges are generally based on the combination of measured stress histories under actual traffic load [12,13], Miner’s rule [14] and railway code provided fatigue curve (also referred S-N or Wöhler curve). Although the mentioned deterministic approach predicts the remaining fatigue life, the uncertainties inherent in the fatigue evaluation process are not captured. These uncertainties are found in the process of determination of stress histories (i.e. structural analysis, field measurements, load testing, loading sequence and respective histories), selecting detail categories, choosing fatigue damage theories [15,16].
برای دانلود رایگان مقاله پل خرپا راه آهن اینجا کلیک نمایید.
کلمات کلیدی:
Fatigue Reliability Assessment of Ageing Railway Truss Bridges https://trid.trb.org/view/1434951 Nov 16, 2016 - Fatigue Reliability Assessment of Ageing Railway Truss Bridges: Rationality of Probabilistic Stress-Life Approach ... Fatigue Life of Riveted Steel Bridges - Page 158 - Google Books Result https://books.google.com/books?isbn=0203847768 Björn Åkesson - 2010 - Technology & Engineering [49] Wiriyachai, A.: Impact and fatigue in open deck railway truss bridges. ... Karren, K. – Mahendrasinhji, G.: Strain hardening and ageing in coldformed steel. [PDF]Maintenance of Railway Structures with Aging Deterioration and ... www.ejrcf.or.jp/jrtr/jrtr62/pdf/32-39_web.pdf Aging Deterioration and Amarube Bridge ... Shimadagawa Bridge, first RC railway bridge in Japan. (JR West). Concrete .... girder bridges and in recent years,. [PDF]ECCOMAS Thematic Conference - Eccomas 2016 https://www.eccomas2016.org/proceedings/pdf/8559.pdf Keywords: Railway bridge, Fatigue life, Loading sequence effect, Reliability index. Abstract. ... are generally used to predict remaining fatigue life of ageing railway bridges. Under many .... trusses supported on cylindrical piers. The bridge deck ... Optical FBG Sensors Monitoring the Structural Behavior of Aging Bridges www.micronoptics.com/optical-fbg-sensors-monitoring-the-structural-behavior-of-agi... Mar 23, 2017 - Given the aging state of our bridges and the resulting potentially ... railway bridges” where they investigate the structural behavior of the Trezói Bridge. ... and dynamic strain response of the bridge in the mid span truss girders.
