静力触探在新建广佛江珠城际轨道交通线岩土工程勘察中的应用  

Application of Cone Penetration Test in Geotechnical Investigation of Newly-Built Guangzhou-Foshan-Zhuhai Intercity Rail Transit Line

作　　者：瞿坤 QU Kun(Shaanxi Railway Engineering Survey Co.Ltd.,Xi'an 710000,China)

机构地区：[1]陕西铁道工程勘察有限公司,西安710000

出　　处：《工程建设与设计》2021年第15期79-81,共3页Construction & Design for Engineering

摘　　要：依托新建广佛江珠城际轨道交通线岩土工程勘察项目,采用静力触探试验方法对场区土进行试验,研究利用锥尖阻力与摩阻比在土层划分中的应用,并总结黏性土的不排水抗剪强度经验公式。研究结果表明:锥尖阻力与土层的物理力学性质有关,摩阻比在识别和划分土层方面具有明显优势,利用图表法能够达到理想的土层划分效果;黏性土的不排水抗剪强度与锥尖阻力具有明显的线性相关关系。Based on the geotechnical engineering investigation project along the newly-built Guangzhou-Foshan-Zhuhai intercity rail transit line,this paper adopts the static cone penetration test method to test the site soil,studies the application of cone resistance and friction ratio in soil layer division,and summarizes the empirical formula of undrained shear strength of cohesive soil.The research results show that the cone resistance is related to the physical and mechanical properties of soil layer,the friction ratio has obvious advantages in identifying and dividing soil layers,and the chart method can achieve the ideal effect of soil layer division;there is a significant linear correlation between undrained shear strength and cone resistance of cohesive soil.

关 键 词：双桥静力触探 广佛江珠城际轨道 岩土工程勘察 锥尖阻力 摩阻比 

分 类 号：U231.1[交通运输工程—道路与铁道工程] U212