兰新线路基土冻胀特性试验分析  

On analysis of tests on frost heaving characteristics of subgrade soil along Lan-Xin railway line

作　　者：李文娟[1] 郭彦荣[1] 杨有海[1] 

机构地区：[1]兰州交通大学土木工程学院

出　　处：《山西建筑》2010年第24期284-285,共2页Shanxi Architecture

摘　　要：为了研究兰新线路基土冻胀特性,进行了不同含水量、不同压实度的封闭系统冻胀试验和开放系统冻胀试验。试验结果表明,在封闭系统下冻胀量随含水量的增大而增长,随压实度增加而减少;开放系统冻胀量远大于封闭系统冻胀量,且与初始含水量有关;在冻结的过程中,冻土中的水分出现了重分布现象。In order to research the frost heaving characteristics of the subgrade soil along Lan-Xin railway line, the paper undertakes the frost heaving tests of closed system with various water contents and compactions, and the tests of the open system, proves by the tests results that the frost heaving content is increased along with the water content, and the frost heaving content is reduced along with the added compaction, and indicates that the frost heaving content of the open system is more than the one in closed system, and it is related to the water content, and illustrates the water can have the redistribution in the frost soil in the heaving process.

关 键 词：冻胀量 含水量 压实度 封闭系统 开放系统 

分 类 号：U416.1[交通运输工程—道路与铁道工程]