阳江地区黏性土物理力学指标的统计分析  

Statistical Analysis of Physical and Mechanical Indexes of Cohesive Soil in Yangjiang Area

作　　者：胡亚晴 周小龙 潘胜平[2] 赵勇[2] 李元松 HU Yaqing;ZHOU Xiaolong;PAN Shengping;ZHAO Yong;LI Yuansong(School of Civil Engineering and Architecture,Wuhan Institute of Technology,Wuhan 430074,China;The 5th Engineering Co.,Ltd,China Railway Major Bridge Engineering Group Co.,Ltd,Jiujiang 332001,China)

机构地区：[1]武汉工程大学土木工程与建筑学院,湖北武汉430074 [2]中铁大桥局集团第五工程有限公司,江西九江332001

出　　处：《武汉工程大学学报》2022年第5期540-544,共5页Journal of Wuhan Institute of Technology

基　　金：武汉工程大学科学研究基金(K201737);武汉工程大学第十三届研究生教育创新基金(CX2021121)。

摘　　要：为分析阳江地区某近海风电场吸力桶基础沉贯特性,对该场地黏性土的物理力学指标进行了研究。首先,根据该风电场项目土层勘察报告,对黏性土的物理力学指标进行了统计分析,研究了黏性土的工程特性;其次,采用回归分析方法,对土层典型物理力学指标进行了相关性分析,并建立了指标间的线性回归方程;最后,通过拟合建立了黏性土物理力学指标随土层分布深度变化的关系曲线。结果表明:阳江地区近海黏性土物理指标较力学指标更稳定;含水率、孔隙比、液性指数与有效重度、黏聚力之间呈较强的负相关性;液限、塑限、塑性指数与有效重度、黏聚力之间呈较弱的正相关性;在取样深度范围内,黏性土的物理力学指标随土层分布深度的增加呈规律性分布。To analyze the penetration characteristics of the suction bucket foundation of an offshore wind farm in the Yangjiang area,we investigated the physical and mechanical indexes of the cohesive soil of the site.Firstly,based on the soil investigation report of this wind farm project,the physical and mechanical indexes of the cohesive soil were statistically analyzed,and the engineering characteristics of cohesive soil were studied.Secondly,the correlation analysis of the typical physical and mechanical indexes of the soil layer was carried out by using regression analysis method,and the liner regression equations between the indexes were established.Finally,the relationship between the physical and mechanical indexes of the cohesive soil and depth of soil layer distribution was fitted.The results show that the physical indexes of the cohesive soil in Yangjiang offshore are more stable than the mechanical indexes.There is a strong negative correlation between water content,void ratio,liquid index and effective unit weight and cohesion.And there is a weak positive correlation between liquid limit,plastic limit,plastic index and effective unit weight and cohesion.In the range of sampling depth,the physical and mechanical indexes of the cohesive soil are distributed regularly with the increase of depth of soil layer distribution.

关 键 词：黏性土 物理力学指标 相关性 回归分析 

分 类 号：TU43[建筑科学—岩土工程]