钢管混凝土轨枕方案设计与受力性能对比分析  

Comparison Analysis of Scheme Design and Mechanical Behaviors of Railway Sleepers Made of Concrete-filled Steel Tubes

作　　者：李启航 张育红[3] LI Qihang;ZHANG Yuhong(China Railway Siyuan Survey and Design Group Co.Ltd.,Wuhan Hubei 430063,China;Hubei Key Laboratory of Track Security Service,Wuhan Hubei 430063,China;China Railway Construction Corporation Limited,Beijing 100855,China)

机构地区：[1]中铁第四勘察设计院集团有限公司,湖北武汉430063 [2]铁路轨道安全服役湖北省重点实验室,湖北武汉430063 [3]中国铁建股份有限公司,北京100855

出　　处：《铁道建筑》2019年第11期105-109,共5页Railway Engineering

基　　金：北京市科技计划（Z181100003918004）;中国铁建股份有限公司科技研究开发计划（16-A01）

摘　　要：提出钢管混凝土轨枕的2种设计方案,方案1为2根外径42 mm长2 m的钢管混凝土构件连接混凝土轨枕块,方案2为2根外径33 mm长2 m的钢管混凝土构件连接混凝土轨枕块。建立钢管混凝土轨枕受力分析模型,通过理论公式计算和有限元仿真分析,分别对2种设计方案的轨枕在堆放、起吊、施工架设过程中关键部位的压力与变形进行研究。计算结果表明:2种方案的轨枕在堆放、起吊、施工架设过程中受力性能均满足要求,但方案2受力与变形明显大于方案1,因此推荐采用方案1。Two design schemes for sleepers made of concrete-filled steel tubes were proposed. In scheme one,2 concrete-filled steel tube components with an outer diameter of 42 mm and a length of 2 m are connected with concretesleeper blocks. In scheme two,2 concrete-filled steel tube components with an outer diameter of 33 mm and a length of2 m are connected with concrete sleeper blocks. A mechanical model of sleeper made of concrete-filled steel tubes wasestablished. Through the theoretical formula calculation and the finite element simulation,the stress and deformation ofthe key parts of the two design schemes during stacking,lifting and construction were studied. The results show thatmechanical behaviors of the two schemes can meet the requirements during stacking,lifting and construction. However,the stress and deformation of scheme two are obviously greater than scheme one,so the scheme one is recommended.

关 键 词：高速铁路 钢管混凝土轨枕 设计方案 理论计算 有限元分析 受力性能 

分 类 号：U213.244[交通运输工程—道路与铁道工程]