上海某地区饱和软黏土塑性指数及液性指数与抗剪强度关系分析  

Analysis of the Relationship between Plasticity Index,Liquid Limit and Shear Strength of Saturated Soft Clay in a Certain Area of Shanghai

作　　者：周礼红[1] 杨柳 ZHOU Lihong;YANG Liu(East,China Electric Power Design Institute Co.,Ltd.,Shanghai200331China;School of Transportation,Southeast University,Nanjing Jiangsu 211189China)

机构地区：[1]华东电力设计院有限公司,上海200331 [2]东南大学交通学院,江苏南京211189

出　　处：《江苏建筑》2024年第6期101-103,107,共4页Jiangsu Construction

摘　　要：上海地区广泛分布着饱和软黏土,其工程性质对地基稳定性和建筑工程安全至关重要,而饱和软黏土的塑性指数及液性指数是影响软黏土抗剪强度的重要参数。文章通过理论分析,结合上海某地区工程实况试验验证,探讨了饱和软黏土的塑性指数和液性指数与其力学试验结果抗剪强度之间的关系。数据分析表明,塑性指数及液性指数与土体的内聚力和内摩擦角存在明显的相关性,且这种相关性对土体力学行为有显著影响。文章的研究为饱和软黏土的工程设计提供了理论依据,对于预测和改善软黏土基坑、边坡、地基等工程特性具有重要意义。Shanghai is widely distributed with saturated soft clay,whose engineering properties are crucial for foundation stability and the safety of construction projects.The plasticity and liquidity index play a significant role in influencing the shear strength characteristics of soft clay.The study examines the impact of the plasticity index and liquidity index of saturated soft clay on the mechanical parameters of soil shear strength through theoretical analysis,combined with experimental verification of engineering conditions in a certain area of Shanghai.The relationship between the plasticity index and liquidity index of saturated soft clay and its mechanical parameters of shear strength is explored.The research results show that there is a significant correlation between the plasticity index and liquidity index and the cohesion and internal friction angle of the soil mass,and this relationship significantly affects the mechanical properties of the soil mass.The study presented in this paper establishes a theoretical foundation for the engineering design of saturated soft clay,which is of great significance for predicting and improving the engineering characteristics of soft clay foundation pits,slopes,foundations,and other projects.

关 键 词：饱和软黏土 塑性指数 液性指数 抗剪强度 黏聚力 内摩擦角 

分 类 号：TU411.7[建筑科学—岩土工程]