Remaining Fatigue Life Predictions of Railway Prestressed Concrete Sleepers Considering Time-Dependent Surface Abrasion
نویسندگان
چکیده
One of the safety-critical components ballasted track systems is railway sleepers whose main functions are to (i) transfer vertical load, (ii) maintain rail gauge, and (iii) restrain longitudinal movement. Railway can be manufactured using timber, concrete, steel, composite, any other engineered materials. Prestressed concrete most commonly used type worldwide because their superior value-for-money performance. In practice, experience thousands cycles aggressive wheel–rail dynamic loads wear deterioration observed over service life. Not only does affect quality geometries, but it also undermines structural integrity structures. The abrasion directly decrease capacity sleepers, resulting in reduction this paper, emphasis placed on assessment fatigue life prestressed with imperfect geometry. This study world’s first establish a new simulation considering accumulative non-constant amplitudes, which has been validated full-scale experimental results empirical analyses. Parametric studies have conducted obtain insights into performance worn sleepers. findings will improve sleeper maintenance inspection criteria, provide guideline track-condition monitoring networks.
منابع مشابه
Fatigue Life Assessment Method for Prestressed Concrete Sleepers
Railway Engineering Institute, China Academy of Railway Sciences, Beijing, China, Birmingham Centre for Railway Research and Education, School of Civil Engineering, The University of Birmingham, Edgbaston, United Kingdom, Department of Civil Engineering, Riga Technical University, Riga, Latvia, Department of Civil Engineering, School of Engineering, The University of Birmingham, Birmingham, Uni...
متن کاملRemaining Fatigue Life Predictions Considering Load and Model Parameters Uncertainty
Fatigue-driven damage propagation is one of the most unpredictable failure mechanisms for a large variety of mechanical and structural systems subjected to cyclic and/or random operational loads during their service life. Therefore, monitoring the critical components of these systems, assessing their structural integrity, recursively predicting their remaining fatigue life (RFL), and providing ...
متن کاملInvestigation on simulation of train loading on prestressed concrete sleepers
Railway concrete sleepers have been developed and utilized in railway industry for over 50 years. Cyclic loading because of vibration on sleepers due to the train loading and the velocity of train itself and also a small percentage of bad wheels, can eventually lead to a crack network and failure of component. The objective of this study is to investigate the load carrying capacity of the selec...
متن کاملPrestressed Concrete Piles
A state of the art presentation on prestressed piling as used throughout the world is discussed in this General Report to the FIP Symposium on Mass-Produced Prestressed Precast Elements in Madrid, Spain, May 1968. Historical information, design data and notes along with manufacturing techniques, installation practices, discussion of problems and failures and a complete bibliography are all cove...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Sustainability
سال: 2022
ISSN: ['2071-1050']
DOI: https://doi.org/10.3390/su141811237