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为了提高废弃轮胎路基使用性能和效果,研究了废弃轮胎环箍下的散体材料压实度和承载力。由于轮胎的侧限作用,轮胎内粉质黏土的最佳含水量比标准实验测定的最优含水量大,细砂的小于最优含水量。轮胎内散体材料的压实度一定范围内随着压实功的增加而增加,级配均匀的砂土在相同压实功的条件下干密度最高,取得最优的压实效果。轮胎的半径越大承载力越低;粗骨料填充的轮胎比细骨料填充的轮胎承载力高,但变形大。轮胎新旧对其内填散体材料的压实度和承载能力没有影响。由于散体材料的横向变形受到轮胎的约束,处于三向受压状态,因此提高了竖向载荷能力。
In order to improve the serviceability and effectiveness of the subgrade of waste tire, the compaction degree and bearing capacity of the waste material under the hoop of waste tire were studied. Due to the tire side effect, the optimum moisture content of the silty clay in the tire is greater than the optimum water content determined by the standard experiment, and the fine sand is less than the optimal water content. The compaction degree of the bulk material in the tire increases with the compaction work within a certain range. The sand with uniform gradation has the highest dry density under the same compaction work and achieves the best compaction effect. The larger the radius of the tire, the lower the bearing capacity. The coarse aggregate-filled tire has higher bearing capacity than the fine aggregate-filled tire, but the deformation is large. Old and new tires have no effect on the compaction and load-bearing capacity of the inner bulk material. Due to the lateral deformation of the bulk material being restrained by the tire, it is in a three-way compression state, thus increasing the vertical load capacity.