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在黄土地区某高速公路段进行试验,通过在试区内试夯,测定不同级别夯锤(160t·m、240t·m)现场夯击次数与夯沉量关系曲线以及夯前原位土样物理性参数与夯后土样物理性参数对比,并结合静力触探的结果,评价两种级别夯锤加固湿陷性黄土的处理效果,确定施工的技术参数,指导基底大面积强夯施工,为湿陷性黄土地区公路建设提供参考。
In a highway section of the loess area, the test was carried out. By means of trial ramming in the test area, the curves of the number of on-site tamping and the amount of tamper at different levels of rammer (160t · m, 240t · m) Compared with the physical parameters of the soil samples after the rammer, the treatment effect of the two levels of rammer to reinforce the collapsible loess is evaluated, and the technical parameters of the construction are determined to guide the large-area dynamic consolidation of the basement. It provides a reference for road construction in collapsible loess area.