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在地震作用下,地基土液化将带来地基不均匀沉降、地基失稳等严重后果。在饱和砂土、粉土地区,液化判别是岩土工程勘察中的一项重要工作。目前,基于标贯试验进行液化判别,工期长、成本高、污染大、人为影响因素多。因此,本文利用黄骅某电厂勘测资料,通过对黏粒含量(ρc)与双桥静力触探(CPT)成果进行统计分析,发现了土层摩阻比Rf与黏粒含量ρc有较好的相关关系,并采用静探试验与标贯试验进行液化判别对比分析。研究表明,采用静探试验进行地基土液化判别效果较好。
Under the action of earthquake, liquefaction of foundation soil will bring about serious consequences such as uneven foundation settlement and instability of foundation. In saturated sand, silt areas, liquefaction discrimination is an important work in geotechnical investigation. At present, based on the standard test liquefaction test, long duration, high cost, pollution, human factors. Therefore, based on the survey data of a power plant in Huanghua, this paper makes statistical analysis on the results of clay content (ρc) and double-bridge static penetration (CPT), and finds that soil frictional resistance ratio Rf and clay content ρc are good Correlation, and the use of static exploration test and standard test for liquefaction discrimination comparative analysis. The research shows that it is better to use static test to determine liquefaction of foundation soil.