摘要
对上海第4层淤泥质软土重塑试样,进行等向压缩试验、K0试验及单向压缩试验.分析不同试验条件下压缩指数和膨胀指数的关系,给出不同试验条件下压缩指数Cc的大小.对8次等向压缩-回弹试验结果进行了分析,比较了膨胀指数Cs的大小.通过对2次K0试验结果的分析,给出重塑上海软土在加载—卸载—再加载过程中,K0随σv的变化规律及K0与OCR(超固结比)的关系.讨论在3种不同试验条件下,卸载过程中膨胀指数Cs与OCR的关系.通过室内试验对压缩性参数的确定,为进一步建立重塑上海软土的本构模型提供了基础.
Differences in compression index （ Cc ） and swelling index （ Cs ） of remoulded soft clay in Shanghai measured by different test methods are studied. The tests include isotropic compression test, K0 test and one-dimensional compression test. Differences in compression index are compared based on the results of three isotropic compression tests, two K0 tests, and three one-dimensional compression tests. And differences in swelling index are also compared based on the results of one-dimensional compression tests and isotropic compression-unloading-and-reloading tests. Variation in K0 due to the change of σv is identified from K0 tests, and the relationship between K0 and over consolidation ratio （ OCR ） is also given. The relationship between Cs and OCR is studied using the resuhs of the three different kinds of tests. Results of these tests are a basis of construction of constitutive models of remoulded soft clay in Shanghai.
出处
《上海大学学报（自然科学版）》
CAS
CSCD
北大核心
2009年第1期99-104,共6页
Journal of Shanghai University:Natural Science Edition
基金
上海市教委基金资助项目(06AZ106)
关键词
重塑上海软土
等向压缩试验
K0试验
压缩指数
膨胀指数
超固结比
remoulded soft clay in Shanghai
isotropic compression tests
K0 test
compression index
swelling index
over consolidation ratio
