9号直尖轨道岔接头冻结的可行性分析  

FeasibilityAnalysis for Joint to be Frozen at 9 #Turnout of Straight tip

作　　者：陈鹏[1] 王进[1] 孙大新[1] 郭满鸿 

机构地区：[1]北京城建设计研究总院有限责任公司,北京100037 [2]南京地下铁道有限责任公司运营分公司,南京210012

出　　处：《工程建设与设计》2012年第2期114-116,共3页Construction & Design for Engineering

基　　金：北京城建设计研究总院有限责任公司技术创新计划项目(2011-13)

摘　　要：针对城市轨道交通既有线上9号直尖轨道岔无缝化的需求,通过建立道岔有限元分析模型,对道岔接头冻结的可行性进行了理论研究。研究表明:当轨温变化幅度不超过一定限度时,接头仍具备冻结的可能性。地下线轨温变化范围一般较小,今后可考虑将此类道岔的接头冻结。地面及高架线因温度变化较大,不建议对此类道岔的接头进行冻结。In this paper, aiming at the seamless turnout of No.9 straight tip in the existing urban rail transit, through the establishment of the turnout finite element analysis model, a theoretical studyis carried out on the feasibility ofjoint to be frozen at 9# turnout of straight tip. It is shown that when the rail temperature variation is within a certain range, the joints still have the possibility of freezing. In the subway, rail temperature variation is generally within a small range, so in the future the frozen joint of turnout can be adopted. The rail temperature variation is in a large range in both ground and elevated lines, so it is not recommended for such joints to be frozen.

关 键 词：城市轨道交通 直尖轨道岔 冻结 有限元 

分 类 号：U213.63[交通运输工程—道路与铁道工程]