Abstract Ballastless track has been widely used in high-speed railway in China; however, it has not yet been laid on the high-speed railway long-span cable-stayed bridges by now. Ganjiang Bridge is a high-speed railway long-span cable-stayed bridge which is designed to lay ballastless tracks. This bridge type and parts of the local structures are first applied in the high-speed railway bridges. This study highlights the case features and structural characteristics of Ganjiang Bridge. A series of structural measures have been taken to improve the feasibility of laying ballastless tracks on the long-span cable-stayed bridges. Besides, as the critical structure of a long-span cable-stayed bridge, the new type cable-girder anchorage structure in Ganjiang Bridge is safe and reliable. Multi-scale finite element modeling technique can simply and effectively realize the accurate stress analysis of the local structures like the cable-girder anchorage region in long-span cable-stayed bridges. Finally, a brief account of the construction method of this bridge type is introduced.

中文翻译：

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赣江大桥：铺设无砟轨道的高铁大跨斜拉桥

摘要 无砟轨道在我国高速铁路上得到广泛应用；但目前高速铁路大跨斜拉桥尚未铺设。赣江大桥是为铺设无砟轨道而设计的高速铁路大跨度斜拉桥。这种桥型和局部结构部分在高速铁路桥梁中首次应用。本研究突出了赣江大桥的案例特征和结构特点。为提高大跨度斜拉桥无砟轨道铺设的可行性，采取了一系列结构措施。此外，赣江大桥新型索梁锚固结构作为大跨度斜拉桥的关键结构，安全可靠。多尺度有限元建模技术可以简单有效地实现大跨度斜拉桥索梁锚固区等局部结构的精确应力分析。最后简要介绍了该桥型的施工方法。