电力勘测设计Issue(10)：15-19,5.DOI:10.13500/j.dlkcsj.issn1671-9913.2025.10.003
基于孔压静力触探预测福建沿海地区软黏土不排水抗剪强度
Evaluation of Undrained Shear Strength of Soft Clay in Fujian Based on the Piezocone Penetration Test
摘要
Abstract
Undrained shear strength is a very important mechanical property parameter in stability analysis of offshore wind power pile foundation,which often determined by in-situ test technique.CPTU were performed in one offshore wind farm construction site of Fujian Province,and undisturbed soils were sampled for laboratory UU tests.According to the test results,with the help of mathematical statistical method,the cone tip factor Nkt of all kinds of soil is obtained.Based on the CPTU test results,the undrained shear strength of the whole construction site is predicted,then was compared with the results of laboratory UU test.The research results show that the Nkt of silt and silty soil in the southeast coastal area is 12.3,the Nkt of silt clay is 32.7,and the Nkt of mucky silt clay is 21.8.The CPTU in situ testing technique can predict the undrained shear strength of soft clay in the southeast coastal area.关键词
不排水抗剪强度/孔压静力触探测试/锥尖因子/软黏土Key words
undrained shear strength/CPTU/the cone tip factor/soft clay分类
动力与电气工程引用本文复制引用
杨辉,曾旭明,潘生贵,邓煜晨,陈志波,丘长生..基于孔压静力触探预测福建沿海地区软黏土不排水抗剪强度[J].电力勘测设计,2025,(10):15-19,5.基金项目
国家自然科学基金"多尺度原状状态花岗岩残积土宏观力学特性及其微观细观结构研究"(52278335) （52278335）
华东勘测设计院(福建)有限公司技术开发项目"基于原状土大型剪切仪的花岗岩残积土多尺度力学特性及其微细观结构研究"(ZKY2023-FJ-01-01). （福建）
