宜城汉江铁路特大桥主桥方案设计研究

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Abstract Research purposes:Yicheng Hanjiang River Bridge is a key control project of the newly-built Xiangyang-Jingmen High-speed Railway. The main bridge uses double main spans of 2×200 m to cross the navigable waters of the Hanjiang River. After studying the bridge span layout and support system, the two bridge schemes, cable-stayed stiffened rigid frame continuous beam bridge and steel-concrete composite (hybrid) rigid frame continuous beam bridge, are comprehensively compared from the aspects of technology and economy.
Research conclusions:(1) The two schemes are applicable. The cable-stayed stiffening rigid frame continuous beam bridge scheme has advantages in stiffness condition, long-term geometry stability, technical maturity, engineering practice experience, maintenance and landscape effect, etc. (2) The cable-stayed stiffened rigid frame continuous beam bridge scheme, by adopting the layout of "high middle pylon, low side pylon", ensure the reasonable structural stress and avoid the negative reaction of side bearings. (3) The static calculation of the structure shows that the structure is safe and reasonable for loading. The safety of train operation and the comfort of passengers all meet the requirements. (4) The design results can provide reference for similar railway bridges.

Key words： high-speed railway rigid frame continuous beam steel-concrete composite beam high and low pylons scheme comparison design

Received: 20 December 2022

PACS:	U238
	U448.13
	U448.27

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	LI Weidong

Cite this article:

LI Weidong. Scheme Design and Research of the Main Bridge of Yicheng Hanjiang River Railway Bridge[J]. Journal of Railway Engineering Society, 2023, 40(2): 41-46.

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https://tdgcxb.crec.cn/EN/ OR https://tdgcxb.crec.cn/EN/Y2023/V40/I2/41

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