严寒地区客运专线CRTSⅠ型无砟轨道板生产裂纹成因分析及工艺控制  

Crack Analysis and Process Control of PDR CRTSⅠ Ballastless Track Slabe Fabricated in Cold Area

作　　者：张建伟 张先军 杜佰君 

机构地区：[1]哈大铁路客运专线有限公司,沈阳110002

出　　处：《铁道标准设计》2012年第5期26-29,共4页Railway Standard Design

基　　金：铁道部科技研究计划(2006G011-F)

摘　　要：介绍严寒地区客运专线CRTSⅠ型无砟轨道板生产过程中裂纹发生的位置和形式,系统分析轨道板裂纹产生的原因,并针对东北严寒地区气候严寒的环境特征提出了工艺改进措施和设计优化建议,即加强轨道板混凝土施工过程控制,加强轨道板养护控制,规范脱模吊装工艺,改进蒸气养护装置和模具基础设置,优化CRTSⅠ型轨道板纵向锚穴口尺寸及结构。This paper introduces the locations and forms of cracks generated during the fabrication of CRTSⅠ ballastless track slab in cold area for passenger dedicated lines,analyses systematically crack causes and proposes measures to improve processes and optimize design in view of the local environment cold conditions in northeast of China.The proposals include reinforcing fabrication process control and track slab curing,specifying form removal procedures,improving steam curing facilities and form foundation setup,optimizing dimension and structure of longitudinal anchor hole of CRTSⅠ track slab.

关 键 词：哈大客运专线 严寒地区 crtsⅠ型 无砟轨道板 裂纹 

分 类 号：U238[交通运输工程—道路与铁道工程] U213.2+44