基于灰色关联分析的湛江组结构性黏土触变性综合评价
Study of the Thixotropy of the Zhanjiang Formation Structural Clay Using Grey Association Analysis
赵盛男 1冷玉坤 2刘学光3
作者信息
- 1. 山东大学齐鲁交通学院,济南 250014
- 2. 中国市政工程东北设计研究总院有限公司,长春 130000
- 3. 济南中建建筑设计院有限公司,济南 250000
- 折叠
摘要
土的触变性是对土体扰动后强度恢复的一种描述,为了更准确的对土体强度恢复程度进行判别,提出触变性综合评价方法,对湛江组结构性黏土的触变性强弱进行研究.考虑影响湛江组结构性黏土触变性的因素,进行无侧限抗压强度试验,构建以含水率、孔隙比、灵敏度为研究对象的湛江组结构性黏土触变性评价指标体系;运用灰色关联分析方法,分析湛江组结构性黏土触变性与各评价指标之间的关联度,判断各因素各水平对触变性影响的强弱.结果表明,含水率、孔隙比过高抑制与触变性的关联度,灵敏度过大促进与触变性的关联度.
Abstract
The thixotropy of structural soils is a description of the strength recovery after soil disturbance.To accurately distin-guish the degrees of the strength recovery of soil,a comprehensive thixotropy evaluation method is proposed.In this paper,the thixotropy of a structural clay in Zhanjiang Formation is studied.Considering the factors affecting the thixotropy of the struc-tural clay in Zhanjiang Formation,the unconfined compressive strength test was performed,and the thixotropy evaluation index system of the structural clay in Zhanjiang Formation was established based on the water content,the void ratio and the sensitiv-ity.The grey correlation analysis method was used to analyze the correlation degree between the thixotropy of the structural clay in Zhanjiang Formation and each evaluation index,and to judge the influence of each factor level on the thixotropy.The re-sults show that the high moisture content and the void ratio inhibit the correlation with the thixotropy,while the high sensitivi-ty promotes the correlation with the thixotropy.
关键词
湛江组结构性黏土/触变性/灰色关联分析/关联度Key words
Structural Clay of Zhanjiang Formation/Thixotropy/Grey Association Analysis/Relevance引用本文复制引用
出版年
2024
NETL
NSTL
万方数据