静力触探在识别地层夹层上的优势分析

Superiority Analysis of Static Cone Penetration in Identifying Strata Interlayer in Engineering Exploration

文中以荣巨揽境小区项目工程为研究背景,探讨DCPTU在测量密度、判别软弱夹层、评价砂土的液化势及检验地基处理效果等方面的可靠性。结果表明,DCPTU与室内试验结果除个别数据存在偏差外,整体上基本一致,DCPTU方法应用于现场密度测量可靠、准确。锥尖阻力在2 m处的抗剪强度显著降低,显示出软弱性,而密度曲线同样在2 m处达到最小值,进一步证实土层的软弱特性。

This article takes the Rongju Lanjing community project as the research background,and explores the reliability of DCPTU in measuring density,identifying weak interlayers,evaluating the liquefaction potential of sandy soil,and testing the effectiveness of foundation treatment.The results indicate that the DCPTU method is generally consistent with the indoor test results,except for a few deviations.The DCPTU method is reliable and accurate in field density measurement.The shear strength of the cone tip resistance significantly decreases at 2 m,indicating weakness,while the density curve also reaches its minimum value at 2 m,further confirming the weak characteristics of the soil layer.