粘土的杨氏模量试验研究Experimental research on Young Modulus of clay
李建中,何盛,徐力生
LI Jian-zhong,HE Sheng,XU Li-sheng(College of Geoscience and Environment Engineering
摘要(Abstract)：
三轴试验被应用于评定未扰动和重塑Kitan粘土的弹性性质。Kitan粘土的杨氏模量分别在最初加载、蠕变后,小的周期加载和滞回圈时测定。为了测定在应变小于0.01%时的准确性,试验采用局部位移测量传感器(LDT)。试验结果显示:在相同应力水平条件下,未扰动Kitan粘土的杨氏模量大于重塑土;对于同一种粘土,在应变率大的情况下,它的杨氏模量同样大;在应变小于0.01%时,未扰动Kitan粘土呈线弹性。
Triaxial compression tests were performed on undisturbed and reconstituted Kitan clay to investigate elastic property of clay.Young Modulus of Kitan clay was measured during initial loading,after creep deformation,within small cyclic loading and global unloading-reloading.In order to measured strain smaller than 0.01% accurately,local displacement transducer(LDT) was used during the tests.The test results showed that: Young Modulus of undisturbed Kitan clay is much bigger than that of reconstituted one under the same stress level;Young Modulus of the same clay under high strain rate is bigger than that of small strain rate;Undisturbed Kitan clay showed perfect linear elastic property within small strain(smaller than 0.01%).
关键词(KeyWords)：
杨氏模量;应变率;应力水平
Young Modulus;strain rate;stress level
基金项目(Foundation):
作者(Author):
李建中,何盛,徐力生
LI Jian-zhong,HE Sheng,XU Li-sheng(College of Geoscience and Environment Engineering
参考文献(References)：
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