山区铁路不对称连续钢桁梁柔性拱桥主梁设计

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Abstract Research purposes: Steel truss flexible arch bridges are generally symmetrical structures, but for railway bridges in mountainous areas, many factors such as site topography, geological conditions, construction conditions and seismic performance should be considered. Based on the research background of a bridge spanning a deep V-shaped ditch in mountain railway, this paper proposes an asymmetric steel truss flexible arch bridge scheme for the steep terrain, narrow construction space and difficult construction, to broaden the idea for the selection of railway bridges in mountainous areas.
Research conclusions: (1)The scheme of (216+144) m asymmetric continuous steel truss flexible arch bridge is adopted, which is suitable for the construction conditions of the bridge site. (2)Through the finite element model, the static and dynamic calculation analysis of the bridge shows that the mechanical properties of the bridge, such as structural stiffness and member strength, can meet the requirements of the relevant codes. (3)The bridge deck system adopts the longitudinal and horizontal beam, and the ballast trough plate is set on the longitudinal beam, which not only reduces the dead weight of the bridge deck, but also solves the problem of maintenance and replacement in the later period of the bridge deck. (4)The bridge adopts the construction scheme of tower and cable, which solves the problem of excessive stress and deformation of the main truss in the process of suspension.(5)The bridge has the advantages of novel form, reasonable structure, beautiful shape and efficient material. It has reference significance for the design of bridge in mountainous terrain.

Key words： railway bridge steel truss girder flexible arch continuous steel truss flexible arch bridge bridge design ballast tank cantilevered assembling construction

Received: 21 May 2024

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U24

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	FANG Shuaiping

Cite this article:

FANG Shuaiping. Design of Asymmetric Continuous Steel Truss Girder with Flexible Arch in Mountainous Area[J]. Journal of Railway Engineering Society, 2024, 41(8): 67-73.

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https://tdgcxb.crec.cn/EN/ OR https://tdgcxb.crec.cn/EN/Y2024/V41/I8/67

[1]	乔雷涛. 高速铁路等跨连续钢桁柔性拱设计关键技术研究[J].铁道标准设计,2023(7):81-87.Qiao Leitao.Study on Key Technology of Equal Span Continuous Steel Truss Flexible Arch in High Speed Railways[J].Railway Standard Design, 2023(7):81-87.
[2]	陈婧雯. 大跨铁路钢桁梁柔性拱桥抗震性能分析和减震阻尼器参数优化研究[D]. 成都:西南交通大学,2022.Chen Jingwen.Aseismic Performance Analyses and Damper Parameters Optimization Research of Long-span Railway Steel Truss and Flexible Arch Bridge[D]. Chengdu: Southwest Jiaotong University,2022.
[3]	夏正春,严爱国,刘振标,等.南沙港铁路洪奇沥特大桥主桥设计[J].世界桥梁, 2019(4):1-5.Xia Zhengchun, Yan Aiguo, Liu Zhenbiao, etc. Design of Main Bridge of Hongqili Bridge on Nanshagang Railway[J]. World Bridges, 2019(4):1-5.
[4]	高宗余,梅新咏,徐伟,等. 沪通长江大桥总体设计[J]. 桥梁建设, 2015(6): 1-6.Gao Zongyu, Mei Xinyong, Xu Wei, etc. Overall Design of Hutong Changjiang River Bridge[J]. Bridge Construction, 2015(6):1-6.
[5]	康炜. 银西高铁银川机场黄河特大桥主桥总体设计[J].铁道标准设计, 2019(3):65-70.Kang Wei.Overall Design of Main Bridge of Yinchuan Airport Yellow River Bridge on Yinchuan-Xi’an High-speed Railway[J]. Railway Standard Design, 2019(3):65-70.
[6]	苏国明. 连盐铁路灌河特大桥钢桁柔性拱设计[J].高速铁路技术, 2014(6):71-74.Su Guoming.Steel Truss Flexible Arch Design of Guanhe Super Major Bridge on Lianyan Railway[J]. High Speed Railway Technology, 2014(6):71-74.
[7]	杜子荣. 合肥南环铁路南淝河特大桥主桥连续钢桁梁柔性拱静动力计算分析[D]. 成都:西南交通大学,2013.Du Zirong.Static and Dynamic Analysis of Continuous Steel Truss Flexible Arch in the Main Span of Nanfeihe Brige of Hefei South Ring Railway[D]. Chengdu: Southwest Jiaotong University,2013.
[8]	梁崇双. 公铁两用三主桁连续钢桁梁顶推施工新技术[J]. 铁道工程学报, 2021(3):41-47.Liang Chongshuang.The New Incremental Launching Construction Craftsmanship of Continuous Steel Truss Girder with Three Main Trusses for Both Highway and Railway[J]. Journal of Railway Engineering Society, 2021(3):41-47.