| 高速重载有砟轨道路基动变形特性的数值分析 |
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| 引用本文： | 董亮,张千里,蔡德钩,程爱君,叶阳升.高速重载有砟轨道路基动变形特性的数值分析[J].中国铁道科学,2010,31(2). |
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| 作者姓名： | 董亮 张千里 蔡德钩 程爱君 叶阳升 |
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| 作者单位： | 中国铁道科学研究院高速铁路轨道技术国家重点实验室,北京,100081;中国铁道科学研究院铁道建筑研究所,北京,100081 |
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| 基金项目： | 中国铁道科学研究院行业服务技术创新项目 |
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| 摘 要： | 运用ABAQUS有限元软件建立有砟轨道—路基系统三维动态有限元模型,分析高速和重载列车荷载作用下的路基空间动应力、路基面横纵向动变形和剪应变特性。基于现场条件,选择砟脚内30cm和砟脚处作为路肩横向和纵向的动变形分析参考点,研究动变形引起的路肩倾斜角度随列车速度、道砟厚度、表层厚度和表层模量变化的规律。结果表明,路肩横向和纵向倾斜角随车速增大而增大,随道砟厚度、基床表层厚度和表层模量的增大而减小,基床表层和底层的最大剪应变较为接近,最大剪应变与路肩最大倾角大致呈线性关系。
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| 关 键 词： | 有砟轨道 路基动变形 路肩倾斜角 剪应变 高速铁路 重载铁路 |
Numerical Analysis for the Dynamic Deformation Characteristics of the Ballast Subgrade on High-Speed and Heavy Haul Railway |
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| DONG Liang ,ZHANG Qianli ,CAI Degou ,CHENG Aijun ,YE Yangsheng.Numerical Analysis for the Dynamic Deformation Characteristics of the Ballast Subgrade on High-Speed and Heavy Haul Railway[J].China Railway Science,2010,31(2). |
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| Authors: | DONG Liang ZHANG Qianli CAI Degou CHENG Aijun YE Yangsheng |
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| Institution: | DONG Liang 1,2,ZHANG Qianli 1,CAI Degou 1,CHENG Aijun 1,YE Yangsheng 1,2 (1. State Key Laboratory of Track Technology of High-Speed Railway,China Academy of Railway Sciences,Beijing 100081,China,2. Railway Engineering Research Institute,China) |
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| Abstract: | With ABAQUS FE software, 3D FE dynamic models of the ballast track-subgrade system were developed to analyze the spatial dynamic stress of the subgrade, the lateral and longitudinal dynamic deformation of the subgrade surface and the shear strain under the loads of high-speed and heavy haul trains. Based on field condition, the reference points for analyzing the lateral and longitudinal dynamic deformation of the road shoulder were chosen at 30 cm inward from the ballast slope angle and at the ballast slope... |
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| Keywords: | Ballast track Dynamic deformation of subgrade Inclination angle of road shoulder Shear strain High-speed railway Heavy haul railway |
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