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- Title
不同轨道板系统梁体线性变化对钢轨映射变形 敏感性分析.
- Authors
刘丽丽; 蒋丽忠; 周旺保; 刘 祥; 吴凌旭; 张云泰
- Abstract
In order to study the sensitivity of rail mapping deformation and fastener internal force of simply-supported bridges with different track systems under the condition of the linear change of the girder geometry, the ANSYS finite element models of 8-span 32 m simply-supported bridges with China Rail Track System (CRTS)Ⅰ slab ballastless track ( SBT) system, CRTSⅡ SBT system and CRTSⅢ SBT system are established respectively in view of the interaction mechanism and deformation coordination of the high-speed railway bridge-ballastless track system. The laws of rail deformation and fastener internal force variation in the three kinds of simply-supported bridge systems are studied. The results show that under the same condition, the geometric shape of rail deformation and fastener internal force curve of the three are basically the same; the rail deformation of the three has good “following features”; The greater the beam deformation is, the greater the rail deformation amplitude and the fastener internal force amplitude are. Under the same working conditions, the rail deformation amplitude and fastener internal force amplitude of the three systems are different. The rail deformation amplitude and fastener internal force amplitude of CRTSⅡ SBT system are the smallest, and those of CRTS Ⅲ SBT system are the largest. Therefore, CRTSⅡ SBT system is the least sensitive to the linear change of the girder geometry.
- Subjects
FINITE element method; GEOMETRIC shapes; GIRDERS; CURVES; FASTENERS; HIGH speed trains; BALLAST (Railroads)
- Publication
Railway Standard Design, 2022, Vol 66, Issue 7, p17
- ISSN
1004-2954
- Publication type
Article
- DOI
10.13238/j.issn.1004-2954.202104120003