Research on expansion joint for high-speed railway long-span bridges in China
Purpose – The bridge expansion joint (BEJ) is a key device for accommodating spatial displacement at the beam end, and for providing vertical support for running trains passing over the gap between the main bridge and the approach bridge. For long-span railway bridges, it must also be coordinated wi...
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| Format: | Article |
| Language: | English |
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Emerald Publishing
2025-02-01
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| Series: | Railway Sciences |
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| Online Access: | https://www.emerald.com/insight/content/doi/10.1108/RS-07-2024-0029/full/pdf |
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| author | Hui Guo Jinzhou Jiang Suoting Hu Chun Yang Qiqi Xiang Kou Luo Xinxin Zhao Bing Li Ziquan Yan Liubin Niu Jianye Zhao |
| author_facet | Hui Guo Jinzhou Jiang Suoting Hu Chun Yang Qiqi Xiang Kou Luo Xinxin Zhao Bing Li Ziquan Yan Liubin Niu Jianye Zhao |
| author_sort | Hui Guo |
| collection | DOAJ |
| description | Purpose – The bridge expansion joint (BEJ) is a key device for accommodating spatial displacement at the beam end, and for providing vertical support for running trains passing over the gap between the main bridge and the approach bridge. For long-span railway bridges, it must also be coordinated with rail expansion joint (REJ), which is necessary to accommodate the expansion and contraction of, and reducing longitudinal stress in, the rails. The main aim of this study is to present analysis of recent developments in the research and application of BEJs in high-speed railway (HSR) long-span bridges in China, and to propose a performance-based integral design method for BEJs used with REJs, from both theoretical and engineering perspectives. Design/methodology/approach – The study first presents a summary on the application and maintenance of BEJs in HSR long-span bridges in China representing an overview of their state of development. Results of a survey of typical BEJ faults were analyzed, and field testing was conducted on a railway cable-stayed bridge in order to obtain information on the major mechanical characteristics of its BEJ under train load. Based on the above, a performance-based integral design method for BEJs with maximum expansion range 1600 mm (±800 mm), was proposed, covering all stages from overall conceptual design to consideration of detailed structural design issues. The performance of the novel BEJ design thus derived was then verified via theoretical analysis under different scenarios, full-scale model testing, and field testing and commissioning. Findings – Two major types of BEJs, deck-type and through-type, are used in HSR long-span bridges in China. Typical BEJ faults were found to mainly include skewness of steel sleepers at the bridge gap, abnormally large longitudinal frictional resistance, and flexural deformation of the scissor mechanisms. These faults influence BEJ functioning, and thus adversely affect track quality and train running performance at the beam end. Due to their simple and integral structure, deck-type BEJs with expansion range 1200 mm (± 600 mm) or less have been favored as a solution offering improved operational conditions, and have emerged as a standard design. However, when the expansion range exceeds the above-mentioned value, special design work becomes necessary. Therefore, based on engineering practice, a performance-based integral design method for BEJs used with REJs was proposed, taking into account four major categories of performance requirements, i.e., mechanical characteristics, train running quality, durability and insulation performance. Overall BEJ design must mainly consider component strength and the overall stiffness of BEJ; the latter factor in particular has a decisive influence on train running performance at the beam end. Detailed BEJ structural design must stress minimization of the frictional resistance of its sliding surface. The static and dynamic performance of the newly-designed BEJ with expansion range 1600 mm have been confirmed to be satisfactory, via numerical simulation, full-scale model testing, and field testing and commissioning. Originality/value – This research provides a broad overview of the status of BEJs with large expansion range in HSR long-span bridges in China, along with novel insights into their design. |
| format | Article |
| id | doaj-art-facc18edab8d40c18cb9972f1c1796cf |
| institution | Kabale University |
| issn | 2755-0907 2755-0915 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Emerald Publishing |
| record_format | Article |
| series | Railway Sciences |
| spelling | doaj-art-facc18edab8d40c18cb9972f1c1796cf2025-02-05T07:11:01ZengEmerald PublishingRailway Sciences2755-09072755-09152025-02-0141528110.1108/RS-07-2024-0029Research on expansion joint for high-speed railway long-span bridges in ChinaHui Guo0Jinzhou Jiang1Suoting Hu2Chun Yang3Qiqi Xiang4Kou Luo5Xinxin Zhao6Bing Li7Ziquan Yan8Liubin Niu9Jianye Zhao10China Academy of Railway Sciences Corporation Limited, Railway Engineering Research Institute, Beijing, ChinaChina Academy of Railway Sciences Corporation Limited, Railway Engineering Research Institute, Beijing, ChinaChina Academy of Railway Sciences Corporation Limited, Railway Engineering Research Institute, Beijing, ChinaCMCU Engineering Co., Ltd., China National Machinery Industry Corporation, Chongqing, ChinaChina Academy of Railway Sciences Corporation Limited, Railway Engineering Research Institute, Beijing, ChinaFirst Design Department, China Railway Group Ltd, Major Bridge Reconnaissance and Design Institute, Wuhan, ChinaState Key Laboratory for Track System of High-speed Railway, China Academy of Railway Sciences Corporation Limited, Beijing, ChinaMa′anshan Yangtze River Bridge Headquarters, Ning′an Railway Co., Ltd., China Railway Shanghai Group, Ma′anshan, ChinaChina Academy of Railway Sciences Corporation Limited, Railway Engineering Research Institute, Beijing, ChinaChina Academy of Railway Sciences Corporation Limited, Infrastructure Inspection Research Institute, Beijing, ChinaChina Academy of Railway Sciences Corporation Limited, Railway Engineering Research Institute, Beijing, ChinaPurpose – The bridge expansion joint (BEJ) is a key device for accommodating spatial displacement at the beam end, and for providing vertical support for running trains passing over the gap between the main bridge and the approach bridge. For long-span railway bridges, it must also be coordinated with rail expansion joint (REJ), which is necessary to accommodate the expansion and contraction of, and reducing longitudinal stress in, the rails. The main aim of this study is to present analysis of recent developments in the research and application of BEJs in high-speed railway (HSR) long-span bridges in China, and to propose a performance-based integral design method for BEJs used with REJs, from both theoretical and engineering perspectives. Design/methodology/approach – The study first presents a summary on the application and maintenance of BEJs in HSR long-span bridges in China representing an overview of their state of development. Results of a survey of typical BEJ faults were analyzed, and field testing was conducted on a railway cable-stayed bridge in order to obtain information on the major mechanical characteristics of its BEJ under train load. Based on the above, a performance-based integral design method for BEJs with maximum expansion range 1600 mm (±800 mm), was proposed, covering all stages from overall conceptual design to consideration of detailed structural design issues. The performance of the novel BEJ design thus derived was then verified via theoretical analysis under different scenarios, full-scale model testing, and field testing and commissioning. Findings – Two major types of BEJs, deck-type and through-type, are used in HSR long-span bridges in China. Typical BEJ faults were found to mainly include skewness of steel sleepers at the bridge gap, abnormally large longitudinal frictional resistance, and flexural deformation of the scissor mechanisms. These faults influence BEJ functioning, and thus adversely affect track quality and train running performance at the beam end. Due to their simple and integral structure, deck-type BEJs with expansion range 1200 mm (± 600 mm) or less have been favored as a solution offering improved operational conditions, and have emerged as a standard design. However, when the expansion range exceeds the above-mentioned value, special design work becomes necessary. Therefore, based on engineering practice, a performance-based integral design method for BEJs used with REJs was proposed, taking into account four major categories of performance requirements, i.e., mechanical characteristics, train running quality, durability and insulation performance. Overall BEJ design must mainly consider component strength and the overall stiffness of BEJ; the latter factor in particular has a decisive influence on train running performance at the beam end. Detailed BEJ structural design must stress minimization of the frictional resistance of its sliding surface. The static and dynamic performance of the newly-designed BEJ with expansion range 1600 mm have been confirmed to be satisfactory, via numerical simulation, full-scale model testing, and field testing and commissioning. Originality/value – This research provides a broad overview of the status of BEJs with large expansion range in HSR long-span bridges in China, along with novel insights into their design.https://www.emerald.com/insight/content/doi/10.1108/RS-07-2024-0029/full/pdfHigh-speed railway (HSR)Long-span bridgeBridge expansion joint (BEJ)Integral designRail expansion joint (REJ)Overall stiffness |
| spellingShingle | Hui Guo Jinzhou Jiang Suoting Hu Chun Yang Qiqi Xiang Kou Luo Xinxin Zhao Bing Li Ziquan Yan Liubin Niu Jianye Zhao Research on expansion joint for high-speed railway long-span bridges in China Railway Sciences High-speed railway (HSR) Long-span bridge Bridge expansion joint (BEJ) Integral design Rail expansion joint (REJ) Overall stiffness |
| title | Research on expansion joint for high-speed railway long-span bridges in China |
| title_full | Research on expansion joint for high-speed railway long-span bridges in China |
| title_fullStr | Research on expansion joint for high-speed railway long-span bridges in China |
| title_full_unstemmed | Research on expansion joint for high-speed railway long-span bridges in China |
| title_short | Research on expansion joint for high-speed railway long-span bridges in China |
| title_sort | research on expansion joint for high speed railway long span bridges in china |
| topic | High-speed railway (HSR) Long-span bridge Bridge expansion joint (BEJ) Integral design Rail expansion joint (REJ) Overall stiffness |
| url | https://www.emerald.com/insight/content/doi/10.1108/RS-07-2024-0029/full/pdf |
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