基于VST试验的土体抗剪强度变化规律研究  

Study on the Variation Law of Soil Shear Strength Based on VST Test

作　　者：何巨 HE Ju(Xiantao Survey and Design Institute,Xiantao 433000,Hubei,China)

机构地区：[1]仙桃市勘测设计院,湖北仙桃433000

出　　处：《工程技术研究》2024年第6期36-38,共3页Engineering and Technological Research

摘　　要：为探究影响土体抗剪强度稳定性和工程性能的因素,文章基于VST试验,对不同深度和含水率的土体进行了抗剪强度分析。结果表明,含水率是土体抗剪强度的主要影响因素,随着含水率的增加,土体黏聚力逐渐降低,内摩擦角逐渐减小,导致土体抗剪强度急剧下降。含水率随深度的变化反映了土壤在不同深度处的湿润状况,不同深度处的土壤对含水率的敏感程度不同。同时,含水率变化还受渗水时间、土壤性质、土壤结构和渗水过程等因素的影响。In order to explore the factors affecting the shear strength stability and engineering performance of soil,the shear strength of soil with different depths and water contents was analyzed based on VST test.The results show that the water content is the most important factor affecting the shear strength of the soil.With the increase of water content,the cohesion of the soil gradually decreases,and the internal friction angle gradually decreases,resulting in a sharp decline in the shear strength of the soil.The change of water content with depth reflects the wetting state of soil at different depths,and the sensitivity of soil to water content at different depths is different.At the same time,the change of water content is also affected by factors such as infiltration time,soil properties,soil structure and infiltration process.

关 键 词：VST试验 抗剪强度 含水率 

分 类 号：TU43[建筑科学—岩土工程]