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南京砂的液化与判别
引用本文:黄永林.南京砂的液化与判别[J].世界地震工程,2001,17(1):69-74.
作者姓名:黄永林
作者单位:江苏省地震局,
基金项目:国家留学基金回国科研资助费资助项目
摘    要:南京砂是一种以片状颗粒成分为主的粉细砂,与土动力学试验中常用的圆形颗粒标准石英砂有一定的差别。片状颗粒成分使得南京砂具有各向异性的性质,其水平向强度小于垂直向强度。因此,在同样的标贯击数下,南京砂比标准砂易于液化,在采用基于标准砂的研究结果作为液化判别标准时,可能会高估这种砂的抗液化能力。文章在总结南京砂液化研究资料的基础上,阐明了南京砂液化的特点,提出了南京砂液化的判别式。

关 键 词:南京砂  土动力学  砂土液化  标贯试验  地震动
文章编号:1007-6069(2000)01-0069-06
修稿时间:2000年5月21日

Liquefaction of the Nanjing sand and its identification
HUANG Yong-lin.Liquefaction of the Nanjing sand and its identification[J].World Information On Earthquake Engineering,2001,17(1):69-74.
Authors:HUANG Yong-lin
Abstract:Nanjing sand mainly consists of schistous grain. The mechanic properties of the sand are different from the standard sand with round quartz grains. Nanjing sand is anisotropic because of the schistous grain. Its horizontal strength is greater than that in vertical. And Nanjingsand is easier to be liquefied than the standard sand under same SPT number. The liquefaction resistance may be over estimated if the identifying method that derived from round grain snad is directly applied to Nanjing sand. The method used to identify Nanjing sand liquefaction is also derived in the paper.
Keywords:Nanjing sand  soil dynamics  sand liquefaction
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