DESIGN ASPECTS OF PRETENSION U GIRDERS FOR SINGLE TRACK GIRDER IN METRO RAPID TRANSIT SYSTEM: A REVIEW
Keywords:
U girders, pretensioning, metro rapid transit system, structural design, material selection, construction, optimization, finite element analysis, analytical approachesAbstract
Pretension U girders are essential components in the construction of single-track girder systems for metro rapid transit systems. The use of pretensioning in U girders is crucial for enhancing their structural performance and durability. This review paper presents a comprehensive analysis of the design aspects of pretension U girders, focusing on structural design considerations, material selection, pretensioning process, design optimization, construction, and installation aspects. The paper begins with an introduction to the importance of U girders in metro systems and the significance of pretensioning in improving their structural performance. It then discusses the loadings and forces acting on U girders in metro systems, design codes and standards applicable to U girders, and structural analysis methods for U girders, including finite element analysis and analytical approaches. Several studies highlighting the importance of pretensioning in U girders and its effectiveness in enhancing their structural performance are reviewed. The paper also discusses the use
of advanced materials and construction techniques, along with optimization methods, to further improve the performance and durability of U girders in metro rapid transit systems.
