用地质统计学计算土层相关尺度
ESTIMATION OF AUTOCORRELATION DISTANCE OF SOIL PROPERTIES BY USING GEOSTATISTICS
查看参考文献15篇
|
文摘
|
随机场理论可以用来模拟土工参数的空间变异性，而地质统计学也借助于随机场理论对自然资源进行估计、模拟和评价，很明显随机场理论是两类应用的共同理论基础，因而借助于发展较成熟的地质统计学理论估算土层相关尺度应是一条有效的途径。本文论述了该方法的理论基础，认为求取变差函数与求相关函数是等价的，建立并证明了八类理论变差函数与其相应的相关距离之间的解析关系，介绍了具体的计算步骤：计算实验变差函数、选择合适的理论变差函数模型、最优拟合实验变差函数、计算相关距离，以实例说明了实际步骤以及结果的有效性和实用性。 |
|
其他语种文摘
|
Random field theory is frequently employed to model spatial average soil properties, while since the 1960 ＇s geostatisties, based on random field theory, has become the most common method to estimate natural resources. It may be an efficient way to model soil spatial variabilities by using geostatistics. This paper presents a convenient procedure for estimating the scale of fluctuation of soil stratun by means of variogram. The procedure includes four steps： calculating experimental variogram from measured data, selecting a suitable theoretical variogram model, fitting the theoretical variogram model with the experimental variogram, taking the parameters obtained from the optimization of the theoretical model into the relationship between the range or asymptotic parameter a,, in geostatistics and the scale of fluctuation, δ. Eight typical expressiom between a, and δ are provided, and a practical example is presented for illustrating the methodology. It is concluded the new method is practicable, simple, and efficient when compared with previous methods. |
|
来源
|
土木工程学报
,2005,38(10):102-107 【核心库】
|
|
关键词
|
地质统计学
;
相关距离
;
变差函数
|
|
地址
|
中国科学院力学研究所, 北京, 100084
|
|
语种
|
中文 |
|
文献类型
|
研究性论文 |
|
ISSN
|
1000-131X |
|
学科
|
建筑科学 |
|
基金
|
国家自然科学基金项目
;
中国科学院知识创新工程重要方向项目
|
|
文献收藏号
|
CSCD:2198064
|
参考文献 共
15
共1页
|
|
1.
Tang W H. Principles of probabilistic characterization of soil properties [ A].
Proc. of Symp. of Probabilistic Characterization of Soil Properties,1984:74-89
|
被引
1
次
|
|
|
|
|
2.
Vanmarcke E H. Probabilistic modeling of soil profiles [J].
Journal of the Geotechnical Engineering Division,1977:1227-1246
|
被引
113
次
|
|
|
|
|
3.
Vanmarcke E H. Analysis and Synthesis [J].
Random Field: Analysis and Synthesis,1983:185-229
|
被引
1
次
|
|
|
|
|
4.
Cressie N A C. Statistics for spatial data [ M ].
Statistics for spatial data,1993
|
被引
33
次
|
|
|
|
|
5.
仁铎. 线性地质统计学[M].
线性地质统计学,1988
|
被引
1
次
|
|
|
|
|
6.
Wladyslaw Knabe. Spatial averages for linear elements for two-parameter random field [J].
Prob. Engng. Mech,1998,13(3):147-167
|
被引
1
次
|
|
|
|
|
7.
Rackwitz R. Reviewing probabilistic soils modeling [J].
Computers and Geosciences,2000,26:199-223
|
被引
1
次
|
|
|
|
|
8.
Meek D W. A semiparametric method for estimating the scale of fluctuation [ J].
Computers and Geosciences,2001,27:1243-1249
|
被引
2
次
|
|
|
|
|
9.
高大钊. 土工参数的自相关特性[A].
第5届全国岩土力学数值分析与解析方法讨论会论文集,1994:53-61
|
被引
1
次
|
|
|
|
|
10.
黄卫峰. 土层相关距离计算的试算拟合法[A].
地基工程可靠度分析方法研究,1997:75-77
|
被引
1
次
|
|
|
|
|
11.
Rice S O. Mathematical analysis of random noise [ J ].
Bell System Technical J,1944(32):282
|
被引
75
次
|
|
|
|
|
12.
Rice S O. Mathematical analysis of random noise [ J ].
Bell System Technical J,1945(25):46
|
被引
2
次
|
|
|
|
|
13.
王建铎. A simplified evaluation procedure of the scale of fluctuation combined recurrence averaging and weighted linear regression [ A ].
Proceeding of Asian-Pacific Symposium on Structural Reliability and Its Application (APSSRA ' 04),2004
|
被引
1
次
|
|
|
|
|
14.
李启信. 土层的概率模型及其在桩基分析中的应用.
岩土工程学报,1989,11(6):120-128
|
被引
6
次
|
|
|
|
|
15.
张庆华. 岩土工程可靠度分析中的土性随机场模型[A].
地基工程可靠度分析方法研究,1997:51-58
|
被引
2
次
|
|
|
|
|
了解气象卫星更多信息，请访问