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根据扁铲的受力机理分析了扁铲测试所获得的参数 ,对比了由扁形铲板和圆锥体贯入土体所产生的土体变形 ,事实表明扁铲探头对土体扰动较小 ,对水平应力具有较高的灵敏度 ,不仅可以用来测试土体强度 ,还可以反映土体的变形参数。通过与其它原位测试和土工试验成果进行对比 ,本文对南京地区粉砂的DMT测试成果进行了阐述。结果表明经地区经验修正公式计算所得出的DMT测试成果具有一定的适用性。
According to the mechanics of flat shovel, the parameters obtained by flat shovel test are analyzed, and the deformation of soil caused by the penetration of flat shovels and cones into soil is compared. The fact indicates that the flat shovel probe has little disturbance to the soil. Horizontal stress has high sensitivity, not only can be used to test soil strength, but also can reflect the deformation parameters of soil. By comparing with other in situ testing and geotechnical test results, this paper describes the DMT test results of silt in Nanjing. The results show that the DMT test results calculated by the regional experience correction formula have some applicability.