济滨铁路公铁两用黄河特大桥总体设计

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摘要 研究目的: 济南至滨州铁路黄河公铁两用特大桥建设环境复杂,在距济南遥墙机场附近约7 km处跨越黄河,下游距既有济阳黄河公路桥仅2 km,黄河防凌度汛压力较大,同时本段河道为Ⅳ级航道,孔跨布置需满足防洪、通航要求,机场净空限制轨面以上桥梁结构最大高度不超过52 m,桥型选择非常有限。本文结合济滨铁路黄河公铁两用特大桥的建设环境、桥型选择、孔跨布置、主桥设计等方面的成果,重点研究复杂边界条件下桥式孔跨方案的确定及主桥、引桥的设计。
研究结论: (1)(84+144+228+240+300+120+60)m四塔三主跨的非对称矮塔斜拉加劲钢桁梁的总体布置,与桥址建设环境契合,同时满足了防洪、通航、公路、铁路多个部门的需求;(2)不等高桥塔与不等跨主跨很好地匹配,既满足了航空限高要求,又与结构受力相结合;(3)34.9 m的超宽双主桁设计、铁路桥面系两侧镂空的构造处理方式,传力顺畅,节省工程投资;(4)对于长联大跨、公铁两用的重载桥梁结构,采用阻尼器斜向布置的设计,可同时解决纵、横两个方向的抗震难题;(5)本研究成果可为复杂边界条件下大型跨河桥梁的设计和施工提供参考和借鉴。

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	冯亚成
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	吴文华

关键词 ：公铁两用桥, 桥型布置, 主桥设计, 非对称矮塔斜拉桥, 减隔震设计, 施工方法

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

收稿日期: 2022-07-11

PACS:

U448.12

基金资助:山东省交通运输厅科技计划(2022B91);中铁第一勘察设计院集团有限公司科学技术研究项目(2021KY60YB-14,2022KY33YB-03)

作者简介: 冯亚成,1983年出生,男,正高级工程师。

引用本文:

冯亚成, 张小坤, 陈应陶, 孙洪斌, 刘红绪, 吴文华. 济滨铁路公铁两用黄河特大桥总体设计[J]. 铁道工程学报, 2022, 39(12): 60-65.
FENG Yacheng,ZHANG Xiaokun,CHEN Yingtao,SUN Hongbin, LIU Hongxu,WU Wenhua. Overall Design of Yellow River Highway-railway Combined Super Large Bridge of Ji′nan-Binzhou Railway. Journal of Railway Engineering Society, 2022, 39(12): 60-65.

链接本文:

https://tdgcxb.crec.cn/CN/ 或 https://tdgcxb.crec.cn/CN/Y2022/V39/I12/60

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