采用应力控制式大型直接剪切仪在南宁市5个轨道交通深基坑中进行原位试验,测得其内聚力c及内摩擦角φ,对南宁市114项轨道交通勘察报告中的强度参数建议值进行统计分析,并将其结果与已有大型动静三轴仪试验结果进行对比,为南宁市圆砾层强度参数取值提供依据。 The large-scale direct shear device with stress-controlled method was used to conduct in-situ tests in 5 subway deep foundation pit in Nanning. The cohesion c and internal friction angle φ were measured. The strength parameters of 114 rail transit survey reports in Nanning Value of statistical analysis, and its results with the existing large-scale static and dynamic triaxial test results compared to provide a basis for the strength of Nanning City gravel parameters.