装配式可调间距的X形抗滑动轨枕研究

U213.3; 为增强轨枕的工作性能和减少钢筋混凝土用量,对传统条形轨枕进行结构优化,提出预制装配式X形可调间距轨枕,并对X形轨枕的结构特点、制作流程、轨道维护和钢筋混凝土用量进行分析.同时,建立三维有砟轨道有限元数值模型,对比循环荷载作用下传统轨枕与X形轨枕的竖向、侧向位移和轨枕应力分布.预制装配式X形轨枕由上、下轨枕两部分拼装组成,轨枕间距设计成600,700,800 mm三档,可在自研的X形轨枕制作模具中直接浇筑成形;相同轨枕间距下,铺设X形轨枕每千米混凝土用量相较于Ⅲa型轨枕减少16.7％,钢筋用量减少2.6％;当X形轨枕间距从600 mm增至700,800 mm时,每千米所需铺设的轨...

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Published in铁道标准设计 Vol. 67; no. 2; pp. 49 - 54
Main Authors 陈成, 王威, 芮瑞, 李建峰, 王晓壮, 唐子桉
Format Journal Article
LanguageChinese
Published 武汉理工大学土木工程与建筑学院,武汉 430070 01.02.2023
Subjects
X形轨枕
轨枕间距
碳减排
装配式混凝土结构
轨道沉降
Online AccessGet full text
ISSN1004-2954
DOI10.13238/j.issn.1004-2954.202111150001

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Abstract U213.3; 为增强轨枕的工作性能和减少钢筋混凝土用量,对传统条形轨枕进行结构优化,提出预制装配式X形可调间距轨枕,并对X形轨枕的结构特点、制作流程、轨道维护和钢筋混凝土用量进行分析.同时,建立三维有砟轨道有限元数值模型,对比循环荷载作用下传统轨枕与X形轨枕的竖向、侧向位移和轨枕应力分布.预制装配式X形轨枕由上、下轨枕两部分拼装组成,轨枕间距设计成600,700,800 mm三档,可在自研的X形轨枕制作模具中直接浇筑成形;相同轨枕间距下,铺设X形轨枕每千米混凝土用量相较于Ⅲa型轨枕减少16.7％,钢筋用量减少2.6％;当X形轨枕间距从600 mm增至700,800 mm时,每千米所需铺设的轨枕根数分别减少14.8％和25.5％.模拟结果表明,相较于传统轨枕,采用X形轨枕的轨道竖向沉降减少了5.8％,侧向位移减少了8.4％.新型X形轨枕具有降低道床沉降和促进碳减排的潜能.
AbstractList U213.3; 为增强轨枕的工作性能和减少钢筋混凝土用量,对传统条形轨枕进行结构优化,提出预制装配式X形可调间距轨枕,并对X形轨枕的结构特点、制作流程、轨道维护和钢筋混凝土用量进行分析.同时,建立三维有砟轨道有限元数值模型,对比循环荷载作用下传统轨枕与X形轨枕的竖向、侧向位移和轨枕应力分布.预制装配式X形轨枕由上、下轨枕两部分拼装组成,轨枕间距设计成600,700,800 mm三档,可在自研的X形轨枕制作模具中直接浇筑成形;相同轨枕间距下,铺设X形轨枕每千米混凝土用量相较于Ⅲa型轨枕减少16.7％,钢筋用量减少2.6％;当X形轨枕间距从600 mm增至700,800 mm时,每千米所需铺设的轨枕根数分别减少14.8％和25.5％.模拟结果表明,相较于传统轨枕,采用X形轨枕的轨道竖向沉降减少了5.8％,侧向位移减少了8.4％.新型X形轨枕具有降低道床沉降和促进碳减排的潜能.
Author 芮瑞
王威
王晓壮
陈成
唐子桉
李建峰
AuthorAffiliation 武汉理工大学土木工程与建筑学院,武汉 430070
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LI Jianfeng
WANG Wei
RUI Rui
TANG Zi'an
CHEN Cheng
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Keywords X形轨枕
轨枕间距
碳减排
装配式混凝土结构
轨道沉降
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