黄土地区静力触探试验曲线的复杂度分析

Complex analysis on static cone penetration test curves in loess area

原位试验数据的不确定性、离散性和高变异性一直是制约岩土工程设计取值、工程检测判断的重要因素,如何充分利用试验数据、发掘内在规律,指导工程实践是当前研究的热点课题.利用组成论中的复杂度分析方法对静力触探试验曲线进行了分析,并依据最复杂原理从数学关系上推导证明了分布函数的具体表达式.分析结果表明,锥尖摩阻力符合极值分布,侧壁摩阻力符合负指数分布,理论分布函数与实测数据吻合较好,在此基础上进一步分析了理论分布函数的物理背景,明确了原位试验深刻的数学物理关系.利用复杂度分析方法对各种离散、变异系数高、不确定试验数据的深入分析具有积极意义.

The testing dates are discrete, variability and uncertain in situ soil test. They are important factors in geotechnical engineering design and geotechnical testing estimation. How to make the most of the testing dates to grasp the disciplinarian of soil and using it in practice is an important question for discussion. The CPT curves were analysed by using the complex method which comes from the constitution theory. Based on the most complex principle, the distribution function was calculated and proved. The analysis results show that tip resistance meets the need of extreme value distribution, skin friction meets the need of shifted exponential distribution, the distribution function applied the testing dates. As the distribution function compressed in constrict conditions, and the calculated process has magnificent physical background, which is helpful to grasp the Physico-mechanical relationship of the insitu soil test. This indicates that the complex methods may exist in the varies dates which are discrete, variability and uncertain.