乌鲁木齐地区低液限粉性土路基回弹模量的确定  

Modulus of resilience for embankments with low liquid limit silty soil in Urumqi Area

作　　者：冉武平[1] 余雄飞[1] 阿肯江.托乎提[1] 李玲[1] 

机构地区：[1]新疆大学建筑工程学院,新疆乌鲁木齐830008

出　　处：《河海大学学报（自然科学版）》2009年第5期607-610,共4页Journal of Hohai University(Natural Sciences)

基　　金：国家自然科学基金(50768010);教育部春晖项目(C2004-2-6503);新疆维吾尔自治区教育厅科研项目(060115);新疆大学院校联合课题基金(XY080136)

摘　　要：采用路基回弹模量常用确定方法,利用试验段现场试验和室内试验的结果,对乌鲁木齐地区低液限粉性土的回弹模量取值进行了分析.研究结果表明,该地区的低液限粉性土,稠度与压实度对回弹模量均有显著影响,且稠度影响更为显著.建立了回弹模量与稠度及压实度预估关系式.根据试验结果对预估关系式的适用性进行了分析,结果表明该关系式拟和精度较高,可以用于该地区低液限粉性土回弹模量的预估.By use of the common methods for modulus of resilience of subgrades and the field and laboratory test results the values of modulus of resilience for embankments with low liquid limit silty soil in Ummqi Area were analyzed. The results show that the consistency and the degree of compaction both have significant influences on the modulus of resilience of the low liquid limit silty soil, and the influences of the former are more significant than those of the latter. Based on the test results, a prediction model for the modulus of resilience, consistency and degree of compaction was established. The applicability of the prediction model was analyzed according to the test results. A conclusion is drawn that the present prediction model is of high precision of fitting and can be employed to estimate the modulus of resilience of low liquid limit silty soil in Urumqi area.

关 键 词：回弹模量 稠度 压实度 预估关系式 

分 类 号：U416.1[交通运输工程—道路与铁道工程]