轨枕预留螺栓孔纵裂原因及改进措施

Cause and Preventive Measures of Longitudinal Crack from Bolt Hole of the Sleeper

随着我国混凝土枕大量推广使用 ,轨枕出现了一些不适应的情况 ,其中螺栓孔纵裂伤损尤为严重 ,成为近十年来影响轨枕寿命的主要因素之一。本文主要对我国混凝土枕螺栓孔纵裂原因进行分析 ,提出局部特殊混凝土改进的思路。

With the popularization of PC sleepers in our country,some damages have appeared in use. Especially the longitudinal crack fron bolt hole,which shorten the life of the sleeper badly,is becoming more and more serious.This paper mainly analyzes the cause and brings forward preventive measures of longitudinal crack from bolt hole of the sleeper.