An overview of soil heterogeneity: quantification and implications on geotechnical field problems
An overview of soil heterogeneity: quantification and implications on geotechnical field problems
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DOI：
10.1139/t02-090
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发表时间：
2003-02
影响因子：
3.6
通讯作者：
T. Elkateb;R. Chalaturnyk;P. Robertson
中科院分区：
文献类型：
--
作者：
T. Elkateb;R. Chalaturnyk;P. Robertson
在岩土工程实践中，工程判断和安全系数的依赖一直是处理土体非均质性的常规工具。本文综述了土壤变异性处理的最新进展。它提出了石油工业中用于量化土壤非均质渗透性的地质统计技术和放大方法的含义。此外，还讨论了将土的统计特性纳入概率设计框架的岩土工程实践的兴趣。这包括传统的基于蒙特卡罗模拟的设计和随机有限元分析，以及考虑土壤性质的空间相关性影响的最新技术。讨论了这些技术在不同类型的现场问题中的应用实例，如地基沉降、渗流和液化评价，并强调了当前实践的局限性和未来研究的趋势。
Engineering judgment and reliance on factors of safety have been the conventional tools for dealing with soil heterogeneity in geotechnical practice. This paper presents a review of recent advances in treating soil variability. It presents the implications of geostatistical techniques and up-scaling methods used for quantifying the heterogeneous permeability of soil as addressed in the petroleum industry. Moreover, the interest of geotechnical practice to incorporate the statistical properties of soil in a probabilistic design framework is also discussed. This ranges from conventional Monte Carlo simulation based design and stochastic finite element analysis to the recent techniques that take into account the effect of spatial correlation of soil properties. Example applications of these techniques to different types of field problems, such as foundation settlement, seepage flow, and liquefaction assessment, are discussed with emphasis on the limitations of the current practice and trends for future resea...