下穿铁路咽喉道岔区线路加固体系研究

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Abstract Research purposes: Due to the uneven distribution of track stiffness and mass in turnout area and its inherent irregularities, the structural stress is more complicated than that of the main line. Turnout has always been a high incidence area of disease and the difficulty of maintenance. Therefore, it is more risky and difficult to cross the railway throat switch area under the top bridge than the main railway line. In this paper, a new reinforcement system with good mechanical properties and wide application scope is put forward, which is applied to the railway throat switch area under the top bridge.
Research conclusions:(1) The calculation of beam based on simply supported beam structure is inconsistent with the stress state of the actual beam. In the numerical simulation analysis of vertical and horizontal beam reinforcement system, the longitudinal beam, rail, rail beam and switch tie should be included, which is consistent with the stress state of the beam in the actual project. (2) The change of the modulus of the subgrade has little influence on the displacement of the beam and rail. In order to prevent the collapse of the top bridge area and the subgrade on both sides during construction, it is suggested to take appropriate grouting measures. (3) This research has a reference for the design of the reinforcement system of the railway throat switch area under the top bridge.

Key words： bridge engineering frame bridge vertical and horizontal beam reinforcement system switch area finite element deformation

Received: 05 May 2022

PACS:	U24
	U218

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	Articles by authors
	ZHAO Daliang
	LIU Jinguo
	GUO Xiaoliang

Cite this article:

ZHAO Daliang,LIU Jinguo,GUO Xiaoliang. Research on Reinforcement System Passing through Railway Throat Switch Area[J]. Journal of Railway Engineering Society, 2024, 41(5): 34-40.

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https://tdgcxb.crec.cn/EN/ OR https://tdgcxb.crec.cn/EN/Y2024/V41/I5/34

[1]	徐洪权,王砺文,夏宁.铁路既有线新型加固方法-横承式便梁法方案研究[J].铁道标准设计,2019(8):85-89.Xu Hongquan,Wang Liwen,Xia Ning.Study on New Reinforcement Method for Existing Railway Lines-Transverse Supported Beam Method[J]. Railway Standard Design,2019(8):85-89.
[2]	丁永平,王延波,曲衍宾.纵横梁线路加固体系空间结构受力分析[J].铁道工程学报,2009(9):42-45.Ding Yongping,Wang Yanbo,Qu Yanbin.Analysis of the Load Bearing Capacity of Reinforcement System with Space Structure for Track on I-beam of Frame Bridge[J].Journal of Railway Engineering Society,2009(9):42-45.
[3]	张苒. 顶进框构桥纵横梁加固法设计分析与应用[J].铁道建筑,2018(6):43-46.Zhang Ran.Analysis and Application of Reinforcement Method Design for Longitudinal and Transverse Beams in Jacked-in Frame Bridge[J].Railway Engineering,2018(6):43-46.
[4]	尚培培. 双孔框构桥下穿重载铁路顶进施工条件下线路加固技术研究[J].铁道建筑,2021(4):39-43.Shang Peipei.Study on Railway Reinforcement Technology of Double-span Frame Bridge Undercrossing Heavy Haul Railway During Jacking Construction[J].Railway Engineering,2021(4):39-43.
[5]	杨建豹. 纵横抬梁法加固线路施工安全控制措施[J].铁道建筑,2021(6):151-153.Yang Jianbao.Construction Safety Control Measures of Railway Reinforced by Longitudinal and Transverse Beams Lifting Method[J].Railway Engineering,2021(6):151-153.
[6]	梁云波. 顶进框架涵下穿铁路道岔区加固技术研究[J].施工技术,2018(11):132-134.Liang Yunbo.Study on Reinforcement Technology of Jacking Frame Culvert Under Crossing Railway Turnout Area[J].Construction Technology,2018(11):132-134.
[7]	王平. 道岔转辙器部分的力学特性分析[J].铁道学报,2000(1):79-82.Wang Ping.Analysis of Mechanical Characteristic for Switch Proper of Turnout[J].Journal of the China Railway Society,2000(1):79-82.
[8]	彭斌,张楠,杨静静.线路加固体系基于车线耦合与有限元的分析[J].铁道工程学报,2014(7):62-68.Peng Bin,Zhang Nan,Yang Jingjing.Analysis of Railway Reinforced System Based on Vehicle-rail Interaction Theory and Finite Element Theory[J].Journal of Railway Engineering Society,2014(7):62-68.