Influence of Surface Abrasion on Creep and Shrinkage of Railway Prestressed Concrete Sleepers

World Multidisciplinary Civil Engineering-Architecture-Urban Planning Symposium - WMCAUS

土木建筑工程

Li, Dan^1 ; Ngamkhanong, Chayut^1 ; Kaewunruen, Sakdirat^1,2

Department of Civil Engineering, University of Birmingham, United Kingdom^1

Birmingham Centre for Railway Research and Education, University of Birmingham, United Kingdom^2

关键词: Concrete sleeper;    Creep and shrinkages;    Design technique;    Lateral dynamics;    Long-term maintenances;    Material designs;    Railway prestressed concrete sleeper;    Surface abrasion;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/245/3/032040/pdf
DOI  :  10.1088/1757-899X/245/3/032040

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

Ballasted railway track is very suitable for heavy-rail networks because of its many superior advantages in design, construction, short- and long-term maintenance, sustainability, and life-cycle cost. The sleeper, which supports rail and distributes loads from rail to ballast, is a very important component of rail track system. Prestressed concrete is very popular used in manufacturing sleepers. Therefore, improved knowledge about design techniques for prestressed concrete (PC) sleepers has been developed. However, the ballast angularity causes differential abrasions on the soffit or bottom surface of sleepers. Furthermore, in sharp curves and rapid gradient change, longitudinal and lateral dynamics of rails increase the likelihood of abrasions in concrete sleepers. This paper presents a comparative investigation using a variety of methods to evaluate creep and shrinkage effects in railway prestressed concrete sleepers. The outcome of this study will improve the material design, which is very critical to the durability of railway track components.