铁路整体道床轨枕端部八字形裂缝研究  

STUDY ON THE CONCRETE EIGHT-SHAPED CRACKS OF MONOLITHIC TRACK BED AT SLEEPER END OF RAILWAY

作　　者：王云峰[1] 

机构地区：[1]兰州铁路局兰州枢纽工程建设指挥部,兰州730000

出　　处：《低温建筑技术》2017年第2期138-140,共3页Low Temperature Architecture Technology

基　　金：国家自然科学基金资助项目(51168030)

摘　　要：高速铁路整体道床在轨枕端部产生的八字形裂缝,是我国西北地区整体道床裂缝的一个亟待解决的问题。本文通过采用理论分析、数值分析、试验研究等手段,对轨枕端部整体道床八字形裂缝的开展机理、开展规律及控制措施进行了研究。裂缝控制措施包括改善施工工艺、改为圆端轨枕、增加整体道床纵筋布置等内容。研究成果对于整体道床的裂缝控制具有重要的指导意义。The eight-shaped cracks of monolithic track bed at the end of sleeper of high speed railway, is a major problem to be solved quickly of monolithic track bed in northwest China. In this paper, the conduct mechanism, the development regularity and control measures of cracks are studied by means of theoretical analysis, numerical analysis, experimental research and others. The crack control measures are including the improvement of construction process, adoption of round end type sleeper and increasing the longitudinal reinforcement arrangement of monolithic track bed, etc. The research achievements have an important guiding significance on the crack control of the monolithic track bed.

关 键 词：高速铁路 整体道床 八字形裂缝 数值分析 

分 类 号：TU312.3[建筑科学—结构工程]