摘要
湿度大的黄土在地震作用下会发生液化和震陷,已在室内动力试验和古地震的调查中得到了证实。目前工程规范对黄土的液化预测判别尚缺乏经验,暂未列入规范。本文介绍了一些黄土地基处理施工的实例,证明饱和黄土在受到机械振动或冲击作用的影响后,会产生液化使所处理的地基下沉,对开展黄土液化机理、液化判别与危害评价方法及工程预防措施的研究具有现实意义。
It＇s possible that liquefaction and seismic collapse could occur during earthquake in high-humidity loess, which has been proved to be true both in laboratory dynamic test and investigation of paleo-earthquakes. At present, the code of engineering doesn＇t put the predictive judgment for the liquefaction of loess into consideration. In this paper, some cases of loess ground treatment are introduced, in which the treated saturated loess liquefied, thus the ground sank, caused by mechanical shaking or impact. It is meaningful to research on the liquefaction mechanization, liquefaction discrimination, harmfulness judgment and engineering precautionary measure for loess.
出处
《西北地震学报》
CSCD
北大核心
2007年第1期54-57,共4页
Northwestern Seismological Journal
关键词
黄土
振动
液化
震陷
Loess
Vibrating
Liquefaction
Seismic collapse
