深圳西部地区海积软土指标及相关性研究  

Study on Engineering Characteristics and Its Index Correlation of Marine Soft Soil on Shenzhen West Area

作　　者：赵冬 丘建金 龚旭亚 吴圣超 ZHAO Dong;QIU Jianjin;GONG Xuya;WU Shengchao(Shenzhen Geotechnical Investigation&Surveying Institute Co.,Ltd.Shenzhen 518028,China)

机构地区：[1]深圳市勘察测绘院(集团)有限公司,深圳518028

出　　处：《广东土木与建筑》2024年第8期44-48,共5页Guangdong Architecture Civil Engineering

摘　　要：以深圳西部地区滨海建设的实地勘察资料为基础,收集了该区20余项重大工程的软土原状土样试验数据,并进行统计学回归分析,得出了a_(1-2)-w曲线和E_(s)-w曲线、c-w曲线和c-I_(L)曲线、φ_(q)-w曲线和φ_(q)-r曲线,确定了深圳西部海积软土天然含水率与压缩指标关系方程、天然含水率、液性指数与黏聚力关系方程、天然含水率、天然密度与摩擦角的关系方程。通过回归曲线归一化整理,结合工程经验,提出了不同天然含水率区段的深圳西部海积软土对应的压缩指标和抗剪指标建议值。持续性地研究了深圳西部软土的工程特性,对该区软土研究具有借鉴意义。Based on the field investigation data of coastal construction in the western area of Shenzhen,collected the test data of soft soil unmodified soil samples of more than 20 major projects in the area,and conducted statistical regression analysis,get a_(1-2)-w curve and E_(s)-w curve,c-w curve and c-I_(L)curve,φ_(q)--w curve andφ_(q)--r curve,confirmed the relationship equations of natural water content and compression index,natural water content,liquid index and cohesion,natural water content,natural density and friction.Based on the normalization of regression curve and engineering experience,the suggested values of compression index and shear index corresponding to different natural water content sections of Marine soft soil in the west of Shenzhen are put forward.Continuous research has been conducted on the engineering properties of soft soil in western Shenzhen,which has reference value for the study of soft soil in the area.

关 键 词：海积软土 物理力学性质 天然含水率 压缩特性 抗剪强度 统计分析 

分 类 号：TU192[建筑科学—建筑理论]