摘要：随着我国地铁的大量兴建，无砟轨道的应用越来越广泛，有板式等双块式等多种无砟轨道。在地铁列车荷载的反复作用选无砟轨道可能会被破坏，所以对无砟轨道的结构性能分析是有必要的。本文的研究对象为双块式无砟轨道，运用ANSYS有限元软件建立有限元模型，通过对模型的分析，验证双块式无砟轨道模型的正确性和适用性。本文内容如下：81438

  （1）对无砟轨道的国内外发展状况进行概括，主要概括日本和德国无砟轨道发展速度领先的国家研究现状。

  （2）对上海地铁1号线轨道的类型结构进行陈述，1号线采用的钢轨是60kg/m钢轨，轨距为标准规矩1435mm。扣件种类使用有DTⅢ型、轨道减振器、WJ-2型、ZG、ZB型。

  （3）根据双块式无砟轨道特性及分析精度要求确定模型类型，本次毕设决定建立分离式钢筋混凝土结构。

  （4）采用ANSYS建立双块式无砟轨道模型，加载荷载在轨枕表面，分析结果表明道床板上轨枕的尖角处应力较大当荷载在240KN的情况下，尖角处应力达到了13。6MPa，轨枕的中心应变比较大，在荷载为240KN的情况下达到了0。01mm。

关键词：无砟轨道；有限元；应力；变形

 Performance Analysis of Track Structure of Shanghai Metro Line 1

ABSTRACT: With the construction of a large number of subway, the application of ballastless track more and more widely, there are plate and other double block and other ballastless track。 In the subway train load the repeated role of the ballastless track may be destroyed, so the structural analysis of the ballastless track is necessary。 In this paper, the research object is a double block ballastless track, and the finite element model is established by ANSYS finite element software。 The correctness and applicability of the double block ballastless track model are verified by the analysis of the model。 This article reads as follows:

(1) Summarize the development of ballastless track at home and abroad, mainly summarizing the current state of national research on the development of ballastless track in Japan and Germany。

(2) The type structure of the track of Shanghai Metro Line 1 is stated。 The rail used in Line 1 is 60kg / m rail, and the gauge is 1435mm, and the No。 9 turnout is used。 Fastener type using DT Ⅲ type, track shock absorber, WJ-2 type, ZG, ZB type。

(3) According to the double-block ballastless track characteristics and analytical accuracy requirements to determine the type of model, this time decided to establish a separate reinforced concrete structure。

(4) The double-block ballastless track model was established by ANSYS。 The load was loaded on the surface of the sleeper。 The results showed that the stress at the sharp angle of the sleeper on the bed plate was larger。 When the load was 240KN, the stress at the sharp angle reached 13。6MPA , The center of the sleeper strain is relatively large, in the case of a load of 240KN reached 0。01mm。

KEYWORDS:Bllastless track; Finite element;strerss;string

目录

第一章  绪论 1

1。1  上海地铁1号线简介 1

1。2研究背景及其意义 1

1。2。1  研究背景 1

1。2。2研究意义 2

1。3无砟轨道的特点 2

1。4国内外研究综述 3

1。4。1国内研究现状 3

1。4。2国外研究现状 4

第二章 上海地铁1号线轨道类型与结构