济滨铁路公铁两用黄河特大桥总体设计

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Abstract Research purposes: The construction environment of Ji'nan-Binzhou Railway Yellow River higway-railway combined super large bridge is complex. It crosses the Yellow River about 7 km away from Jinan Yaoqiang airport, and the downstream is only 2 km away from the existing Jiyang Yellow River highway bridge, the Yellow River is under great pressure to prevent ice and flood. At the same time, the river channel in this section is a class IV channel, and the layout of spans should meet the requirements of flood control and navigation, the maximum height of the bridge structure above the rail surface shall not exceed 52 m, so the choice of bridge types are very limited. Combined with the construction environment, bridge type selection, span layout, main bridge design and other achievements of the Yellow River highway-railway combined super large bridge of Ji'nan-Binzhou Railway, this paper focuses on the determination of the bridge span scheme and the design of the main bridge and approach bridge under complex boundary conditions.
Research conclusions: (1) (84+144+228+240+300+120+60) m asymmetric low pylon cable-stayed stiffening steel truss girder with four towers and three main spans is in line with the construction environment of the bridge site and meets the needs of flood control, navigation, highway and railway departments. (2) The unequal height bridge tower is well matched with the unequal span main span, which not only meets the requirements of aviation height limit, but also combines with the structural stress. (3) The 34.9 m super wide double main truss design and the structural treatment method of hollowing out on both sides of the railway bridge deck system ensure smooth force transmission and save project investment. (4) For the long-span, highway and railway heavy-duty bridge structure, the damper inclined layout design is adopted, which can solve the seismic problems in both vertical and horizontal directions at the same time. (5) The research results can provide reference for the design and construction of large-scale river crossing bridges under complex boundary conditions.

Key words： higway-railway combined bridge bridge type layout main bridge design asymmetric low pylon cable-stayed bridge seismic isolation design construction method

Received: 11 July 2022

PACS:

U448.12

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	Articles by authors
	FENG Yacheng
	ZHANG Xiaokun
	CHEN Yingtao
	SUN Hongbin
	LIU Hongxu
	WU Wenhua

Cite this article:

FENG Yacheng,ZHANG Xiaokun,CHEN Yingtao, et al. Overall Design of Yellow River Highway-railway Combined Super Large Bridge of Ji′nan-Binzhou Railway[J]. Journal of Railway Engineering Society, 2022, 39(12): 60-65.

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https://tdgcxb.crec.cn/EN/ OR https://tdgcxb.crec.cn/EN/Y2022/V39/I12/60

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