Evolution of Longitudinal Resistance Performance of Granular Ballast Track with Durable Dynamic Reciprocated Changes
A full-scale test model with a distinct loading system is developed to analyze the dynamic change process of ballast beds under cyclic longitudinal reciprocated loading. The test analysis methodology accounts for the service performance, longitudinal resistances, and evolution trend of ballast beds...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2018/3189434 |
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| _version_ | 1832556753442570240 |
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| author | Jieling Xiao Hao Liu Ping Wang Ganzhong Liu Jingmang Xu Rong Chen |
| author_facet | Jieling Xiao Hao Liu Ping Wang Ganzhong Liu Jingmang Xu Rong Chen |
| author_sort | Jieling Xiao |
| collection | DOAJ |
| description | A full-scale test model with a distinct loading system is developed to analyze the dynamic change process of ballast beds under cyclic longitudinal reciprocated loading. The test analysis methodology accounts for the service performance, longitudinal resistances, and evolution trend of ballast beds under long-term loading. The analysis shows that the ballast resistance-displacement curves under cyclic loading are a set of closed hysteretic curves, indicating obvious energy consumption. In particular, a granular ballast bed is subject to cyclic softening during the cyclic process and the ballast longitudinal resistances degenerate obviously. More particularly, the cyclic softening of a granular ballast bed is dependent on the dynamic disturbance amplitude—the higher the dynamic disturbance amplitude, the more severe the cyclic softening will become. Moreover, this methodology contributes to forming a foundation for an in-depth understanding of the dynamic service performance of ballast CWR tracks and of the stress deformation mechanism of continuously welded rail tracks. |
| format | Article |
| id | doaj-art-8489083eb2274aa691354ed97c40356c |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-8489083eb2274aa691354ed97c40356c2025-02-03T05:44:29ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422018-01-01201810.1155/2018/31894343189434Evolution of Longitudinal Resistance Performance of Granular Ballast Track with Durable Dynamic Reciprocated ChangesJieling Xiao0Hao Liu1Ping Wang2Ganzhong Liu3Jingmang Xu4Rong Chen5MOE Key Laboratory of High-Speed Railway Engineering, Southwest Jiaotong University, Chengdu 610031, ChinaMOE Key Laboratory of High-Speed Railway Engineering, Southwest Jiaotong University, Chengdu 610031, ChinaMOE Key Laboratory of High-Speed Railway Engineering, Southwest Jiaotong University, Chengdu 610031, ChinaMOE Key Laboratory of High-Speed Railway Engineering, Southwest Jiaotong University, Chengdu 610031, ChinaMOE Key Laboratory of High-Speed Railway Engineering, Southwest Jiaotong University, Chengdu 610031, ChinaMOE Key Laboratory of High-Speed Railway Engineering, Southwest Jiaotong University, Chengdu 610031, ChinaA full-scale test model with a distinct loading system is developed to analyze the dynamic change process of ballast beds under cyclic longitudinal reciprocated loading. The test analysis methodology accounts for the service performance, longitudinal resistances, and evolution trend of ballast beds under long-term loading. The analysis shows that the ballast resistance-displacement curves under cyclic loading are a set of closed hysteretic curves, indicating obvious energy consumption. In particular, a granular ballast bed is subject to cyclic softening during the cyclic process and the ballast longitudinal resistances degenerate obviously. More particularly, the cyclic softening of a granular ballast bed is dependent on the dynamic disturbance amplitude—the higher the dynamic disturbance amplitude, the more severe the cyclic softening will become. Moreover, this methodology contributes to forming a foundation for an in-depth understanding of the dynamic service performance of ballast CWR tracks and of the stress deformation mechanism of continuously welded rail tracks.http://dx.doi.org/10.1155/2018/3189434 |
| spellingShingle | Jieling Xiao Hao Liu Ping Wang Ganzhong Liu Jingmang Xu Rong Chen Evolution of Longitudinal Resistance Performance of Granular Ballast Track with Durable Dynamic Reciprocated Changes Advances in Materials Science and Engineering |
| title | Evolution of Longitudinal Resistance Performance of Granular Ballast Track with Durable Dynamic Reciprocated Changes |
| title_full | Evolution of Longitudinal Resistance Performance of Granular Ballast Track with Durable Dynamic Reciprocated Changes |
| title_fullStr | Evolution of Longitudinal Resistance Performance of Granular Ballast Track with Durable Dynamic Reciprocated Changes |
| title_full_unstemmed | Evolution of Longitudinal Resistance Performance of Granular Ballast Track with Durable Dynamic Reciprocated Changes |
| title_short | Evolution of Longitudinal Resistance Performance of Granular Ballast Track with Durable Dynamic Reciprocated Changes |
| title_sort | evolution of longitudinal resistance performance of granular ballast track with durable dynamic reciprocated changes |
| url | http://dx.doi.org/10.1155/2018/3189434 |
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