鱼山海域促淤围涂工程软土特征及土工指标分析  

Soft soil characteristics and geotechnical indices of silt-promoting reclamation project in the Yusan sea area

作　　者：孙德科 吴朝东 SUN De-ke;WU Chao-dong(CCCC Third Harbor Consultants Co.,Ltd.,Shanghai 200032,China)

机构地区：[1]中交第三航务工程勘察设计院有限公司,上海200032

出　　处：《水运工程》2021年第5期158-161,共4页Port & Waterway Engineering

摘　　要：针对鱼山海域软土十分发育、对工程建设影响较大的问题,进行该海域软土土工试验成果分析研究,包括③2层淤泥质粉质黏土层物理、力学指标等影响因素;采用数学统计方法分析主要指标的相关性。结果表明:该层土工程性质差,常规物理试验指标离散性较小;天然含水率与孔隙比、液限与塑限、塑性指数具有明显线性相关特性;抗剪强度随着深度增加而呈现十字板原位测试(原状)>直剪快剪>固结快剪规律。In view of the problem that soft soil in the Yushan sea area is very developed and has a great influence on the engineering construction,we analyze the results of the soft soil geotechnical test in this sea area,including the influential factors such as physical and mechanical indices of the③2 silty powder clay layer.Using mathematical-statistical methods and fitting the main indicators for correlation,we obtain the results which show that the layer has poor engineering properties and dispersion of conventional physical test indicators is small;the natural moisture content and pore ratio,liquid limit and plastic limit,plasticity index have obvious linear correlation characteristics;shear strength increases with depth,showing the rule of cross-slab in-situ test(in-situ)>straight shear fast shear>consolidation fast shear.

关 键 词：鱼山海域 软土 物理力学指标 相关性 

分 类 号：TU411[建筑科学—岩土工程] U652[建筑科学—土工工程]