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本文是应用工兵圆锥仪快速测定土基和灰土密实度及路基强度的试验报告。通过大量的室内外试验,对不同土类和不同含水量的试件进行测定,并回归分析建立了贯入阻力与密实度的关系式;同时,在试验路上进行了承载板、回弹弯沉、长杆贯入及其相对应的圆锥仪贯入阻力的测定,并建立了P—E_0、P—L_0、P—N等经验公式。文中还对南空某机场道面下土基用环刀法测定的密实度,与圆锥仪测定按回归方程(10)计算的密实度,进行了对比分析,发现两者误差均<2σ,进一步证实了该项简化公式的可靠性。
This paper is a test report of rapid determination of compactness and subgrade strength of soil-based and lime-soil by using engineer cone. Through a large number of indoor and outdoor tests, the test specimens with different soil types and different water contents were measured, and the relationship between penetration resistance and solidity was established by regression analysis. At the same time, bearing plates, rebound deflection , Penetration of the long pole and its corresponding cone penetration penetration resistance, and established empirical formulas such as P-E_0, P-L_0 and P-N. In the paper, the compaction degree measured by the ring cutter method under the pavement of a certain airport in South Air and the compactness calculated by the cone equation according to the regression equation (10) were compared and found that the errors between the two were <2σ Confirmed the reliability of the simplified formula.