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因衡德高速公路故城支线路基填方量大、工期短,为控制路基的总沉降、减小工后沉降,采用冲击压路机对碾压成型路基进行冲击碾压补强,以有效提高路堤的密实度与均匀性,减少工后沉降与差异沉降,提高路基整体稳定性及强度。检测数据表明:冲击碾压补强效果明显;施工中要根据试验合理选择冲击碾压遍数;随冲击碾压遍数增加,压实效果递降。
Due to the large amount of subgrade fill of Gucheng Expressway Gucheng Branch and short construction period, in order to control the total subgrade settlement and reduce post-construction settlement, the impact roller is used to impact and compaction the roller compaction subgrade to effectively improve the embankment Density and uniformity, reduce post-construction settlement and differential settlement, improve the overall stability and strength of subgrade. Test data show that: the impact of crushing reinforcement effect is obvious; construction should be based on the reasonable choice of the number of impact crushing test; with the impact of crushing the number increased, the compaction effect decreases.