杭州湾跨海铁路大桥总体设计与关键技术研究

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Abstract Research purposes:Hangzhou Bay Bridge of the Nantong-Ningbo High-speed Railway will be the world's longest high-speed railway cross-sea bridge with the highest construction standard. The construction conditions are complex, and there are few engineering experiences available for reference at home and abroad, and the engineering construction will face enormous difficulties and challenges. Based on the characteristics of the project, the overall design idea of ultra-long-distance sea-crossing bridges is proposed, and the typical key technologies such as laying of ballastless tracks for 450 m-class long-span cable-stayed bridges, the seamless line of 80 m-span ultra-long-connected concrete continuous beams, and intensive arrangement of four electric/electronic systems, emergency rescue, operation and maintenance of the ultra-long-distance sea-crossing railway bridges are studied, to provide a basis for project decision-making, and also provide reference for other cross-sea railway projects.
Research conclusions:(1) It is appropriate to choose the Haiyan West Passage to cross Hangzhou Bay as a bridge and build a double-track railway bridge. (2) The three waterway bridges of the Hangzhou Bay Sea-Crossing Bridge should be laid with ballastless tracks, and the whole bridge has no speed limit. (3) The ultra-long-distance approach bridge should adopt the 80 m-span ultra-long concrete continuous beam seamless line, and set up the rail expansion regulator. (4) The four electric/electronic systems of the ultra-long-distance cross-sea railway bridge should be arranged intensively, and the offshore four-electrical platform and pier should be arranged. (5) Emergency rescue stations should be set up for ultra-long-distance sea-crossing bridges, and centralized rescue should be combined with random rescue. (6) The ultra-long-distance cross-sea railway bridge should reasonably arrange the operation and maintenance channel according to the needs of public works, electricity, and power supply operation and maintenance.

Key words： Hangzhou Bay cross-sea railway bridge overall design ballastless track seamless line four electric/electronic systems emergency rescue operation and maintenance

Received: 11 July 2022

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Cite this article:

ZHANG Jian. Research on the Overall Design and Key Technology of Hangzhou Bay Cross-sea Railway Bridge[J]. Journal of Railway Engineering Society, 2022, 39(10): 7-12.

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https://tdgcxb.crec.cn/EN/ OR https://tdgcxb.crec.cn/EN/Y2022/V39/I10/7

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