TY - JOUR
T1 - Effect of bridge lateral deformation on track geometry of high-speed railway
AU - Gou, Hongye
AU - Yang, Longcheng
AU - Leng, Dan
AU - Bao, Yi
AU - Pu, Qianhui
N1 - Publisher Copyright:
Copyright © 2018 Techno-Press, Ltd.
PY - 2018/10/25
Y1 - 2018/10/25
N2 - This paper presents an analytical model to analyze the mapping relationship between bridge lateral deformation and track geometry of high-speed railway. Based on the rail deformation mechanisms, the deformation of track slab and rail at the locations of fasteners are analyzed. Formulae of rail lateral deformation are derived and validated against a finite element model. Based on the analytical model, a rail deformation extension coefficient is presented, and effects of different lateral deformations on track geometry are evaluated. Parametric studies are conducted to evaluate the effects of the deformation amplitude, fastener stiffness and mortar layer stiffness on the rail deformation. The rail deformation increases with the deformation of the girder, and is dependent on the spacing of the fasteners, the elastic modulus of the rail's material, and the moment of inertia of the rail's section.
AB - This paper presents an analytical model to analyze the mapping relationship between bridge lateral deformation and track geometry of high-speed railway. Based on the rail deformation mechanisms, the deformation of track slab and rail at the locations of fasteners are analyzed. Formulae of rail lateral deformation are derived and validated against a finite element model. Based on the analytical model, a rail deformation extension coefficient is presented, and effects of different lateral deformations on track geometry are evaluated. Parametric studies are conducted to evaluate the effects of the deformation amplitude, fastener stiffness and mortar layer stiffness on the rail deformation. The rail deformation increases with the deformation of the girder, and is dependent on the spacing of the fasteners, the elastic modulus of the rail's material, and the moment of inertia of the rail's section.
KW - Analytical model
KW - Bridge lateral deformation
KW - High-speed railway
KW - Mapping relationship
KW - Track geometry
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U2 - 10.12989/scs.2018.29.2.219
DO - 10.12989/scs.2018.29.2.219
M3 - Article
AN - SCOPUS:85055881390
SN - 1229-9367
VL - 29
SP - 219
EP - 229
JO - Steel and Composite Structures
JF - Steel and Composite Structures
IS - 2
ER -