双桥静力触探在天津软土地层分类中的应用研究  

Application of Double Bridge Cone Penetration in Soil Layer Classification of Tianjin

作　　者：李兵兵 LI Bingbing(China Railway Construction Group Co.Ltd.,Beijing 100040,China)

机构地区：[1]中铁建设集团有限公司,北京100040

出　　处：《铁道建筑技术》2023年第4期190-194,共5页Railway Construction Technology

基　　金：中铁建设集团有限公司科技研发计划项目(LX21-37c,LX22-38c)。

摘　　要：通过双桥静力触探土层分类图对天津软土地区双桥静力触探测试成果进行汇总分析,研究基于双桥数据的土层分类界限标准合理性。根据四类典型土在土层分类图上分布位置的对比分析结果,发现现阶段的土层分类图并不能很好地区分黏土和粉质黏土,土层的类别细分仍需根据不同地基土层双桥触探数据的端阻、侧阻以及摩阻比曲线特征进行具体定义。本文研究成果能够有效应用于基于双桥静力触探数据的土层分类命名,对岩土工程中的勘察设计和工程建设具有积极指导作用。With the test parameters of double bridge cone penetration from Tianjin soft soil areas,soil classification was carried out by the soil layer classification chart,from which,the rationality of soil classification criteria based on double bridge cone penetration data was discussed.According with the four typical soil distribution location on soil layer classification chart,it can be noticed that clay and silty clay can’t be distinguished by the current soil layer classification chart very well,soil layer specific definition still need to be carried out through the end resistance curves,the friction curves and the friction ratio curves obtained by double bridge cone penetration data.The research results of this paper can be effectively applied in the soil layer classification process and naming,and have a positive guiding role in the survey and design as well as the engineering construction in geotechnical engineering.

关 键 词：双桥静力触探 土层分类 摩阻比 触探曲线 原位测试 

分 类 号：TU447[建筑科学—岩土工程] TU195.2[建筑科学—土工工程]