| 基于CRTSⅡ型板式无砟轨道端刺的路桥过渡段变形特性研究 |
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| 引用本文： | 吴伟.基于CRTSⅡ型板式无砟轨道端刺的路桥过渡段变形特性研究[J].路基工程,2017,0(5):77-80. |
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| 作者姓名： | 吴伟 |
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| 作者单位： | 中铁上海设计院, 上海 200070 |
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| 摘 要： | 目前，在国内高速铁路建设中，CRTSⅡ型板式无砟轨道应用比较广泛，而CRTSⅡ型板式无砟轨道在桥头需设置端刺系统，端刺结构较高且为刚性结构，与两侧路基的刚度差较大，如不处理，将影响该处轨道的平顺性，路桥过渡段需考虑端刺统筹设置。结合合蚌高铁的路桥过渡段设计，运用FLAC3D有限元软件模拟计算路桥间刚度变化情况，分析了不同路桥过渡段形式在载荷作用下的变形特征，并通过检测加以验证。
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| 关 键 词： | CRTSⅡ型无砟轨道 过渡段 端刺 数值计算 动位移 |
| 收稿时间： | 2019-11-09 |
Research on the Performance of Deformation of Bridge-approach Based on End Spine of CRTSⅡ-type Non-ballasted Track with Loading |
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| Abstract: | Now in high-speed railway construction in China, CRTSⅡ-type non-ballasted track is used widely, but CRTSⅡ-type non-ballasted track needs to set end spine system, the end spine structure is high and rigid structure, the rigidity between end spine and subgrade is very different, if untreated, it will affect the track regularity of the site, bridge-approach have to be designed according to end spine. Based on the design of bridge-approach of Hefei-Bengbu high-speed railway, this article simulated stiffness changes of bridge-approach by the FLAC3D finite element software and analyzed the performance of deformation of different bridge-approach with loading.The test is verified by detecting. |
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