土性参数的相关距离研究  

Study on Correlation Distance of Soil

作　　者：张丽萍[1] 刘超[2] 

机构地区：[1]陕西交通职业技术学院,西安710018 [2]长安大学地质工程与测绘学院,西安710054

出　　处：《价值工程》2011年第16期6-7,共2页Value Engineering

基　　金：国家自然科学基金"黄土路堑边坡稳定性的可靠度研究"(40772181)

摘　　要：在自然过程中形成的土,其物理力学性质指标具有自相关的特性,这种特性可用相关距离来衡量。对于岩土工程参数的统计计算应考虑相关距离的影响,这样能更真实、准确的反映地基土的特性。以西安市地铁一、二号线勘察的静力触探数据,根据Vanmarcke提出的土层概率模型、土性相关距离的定义以及方差折减函数Γ(2h)的基本性质,采用递推空间法计算得出各地基土层的相关距离。Soil is formed in natural process and its geotechnical parameters have autocorrelation characteristics which can be measured by correlation distance.The effect of correlation distance should be considered to calculate the parameters,which can make the result reflect the character of soil factually and accurately.In accordance with soil layer probability model,the definition of soil property correlative distance and the fundamental property of the variance reduction function Г2（h）suggested by Vanmarcke,based on CPT data,the paper presents the recurrence space average method to calculate the the correlative distance.

关 键 词：相关距离 递推空间法 随机场 

分 类 号：N3[自然科学总论]