压实黄土回弹模量试验研究  

Research on resilient modulus test of compacted loess

作　　者：陈开圣[1,2] 沙爱民[2] 

机构地区：[1]贵州大学土木建筑工程学院,贵阳550003 [2]长安大学特殊地区公路工程教育部重点实验室,西安710064

出　　处：《岩土力学》2010年第3期748-752,759,共6页Rock and Soil Mechanics

基　　金：国家西部交通建设科学研究项目(No200131881212);贵州省社会发展攻关项目(黔科合SZ字[2008]3014);贵州大学引进人才项目(Nox065004)

摘　　要：土基回弹模量是路面结构设计中一个非常重要的参数,直接关系到路面结构的安全性和经济性。室内振动压实是室内击实成型试件的一种新方法,能较好地模拟振动压实的特点。研究了压实黄土回弹模量与其干密度、含水率、稠度和压实度以及龄期等物理指标之间的关系,并分析了振动压实黄土的回弹模量与击实黄土的回弹摸量。研究结果表明,压实黄土的回弹模量与其干密度、含水率、稠度和压实度以及龄期之间有一定的相关关系。在推荐参数条件下,室内振动压实黄土回弹模量比室内击实的要大。The soil resilient modulus is an important parameter in the pavement structure design. It influences directly on safety and economy of the pavement structure. The indoor vibratory compaction is a new method of forming specimen, which can simulate the properties of vibratory compaction in the real road construction. The relationship between the resilient modulus of compacted loess and its physical indexes such as dry density, water content, consistency and compaction degree and age is analyzed.Therefore, the resilient modulus of vibratory compacted loess is compared with that of the heavy rammer loess. The results show that the correlative relations are presented between resilient modulus of compacted loess and those physical indexes mentioned above. The resilient modulus of indoor vibratory compacted loess is larger than that of indoor heavy rammer loess under the recommended parameters＇ condition.

关 键 词：压实黄土 回弹模量 振动压实 重型击实 

分 类 号：TU41[建筑科学—岩土工程]