沿海港口工程中互层土直剪抗剪强度指标的探讨  

Discussion on direct shear strength index of layered structured soil in coastal harbor engineering

作　　者：戚玉红[1] 张宏明[1] 刘攀 QI Yu-hong;ZHANG Hong-ming;LIU Pan(CCCC First Harbor Consultants Co.Ltd.,Tianjin 300222,China)

机构地区：[1]中交第一航务工程勘察设计院有限公司,天津300222

出　　处：《水道港口》2023年第3期454-459,共6页Journal of Waterway and Harbor

摘　　要：互层土是沿海港口工程中常见的一种特殊性土,具有明显的水平层理构造、不均匀性、各向异性等特点,其抗剪强度在水平方向与垂直方向上差异较大,常规水平方向直剪抗剪强度指标不能全面表征互层土的抗剪性质。依托苏北地区工程实例,利用数理统计方法,对互层土直剪抗剪强度指标进行了初步研究,提出了一种利用常规水平方向抗剪强度试验成果确定互层土水平方向和垂直方向直剪抗剪强度指标的实用方法,同时也提出了水平方向和垂直方向抗剪强度在互层土边坡稳定性验算中的应用准则,研究成果可为今后类似工程勘察和地基计算及互层土性质的进一步研究提供借鉴。Layered structured soil is a special soil commonly found in coastal port projects,with obvious horizontal laminar structure,inhomogeneity,anisotropy and other characteristics,its shear strength varies greatly in horizontal and vertical directions.Based on the engineering example in northern Jiangsu Province,a preliminary study on the direct shear strength index of layered structured soil was conducted by using mathematical and statistical methods,and a practical method to determine the direct shear strength index of layered structured soil in horizontal and vertical directions by using the results of conventional horizontal shear strength test was proposed.The research results can provide a reference for future similar engineering investigations and foundation calculations and further research on the properties of layered structured soil soils.

关 键 词：互层土 厚度比 抗剪强度 力学性质 

分 类 号：U656.1[交通运输工程—港口、海岸及近海工程]