中文摘要：

通过改变锤重和土柱高度两个因素来设计击实试验方案,研究红砂岩风化土在不同方案下,单位面积冲击能与冲沉量、土体干密度的关系;锤击数N与抗剪强度的关系.根据试验得出的冲击荷载作用下红砂岩风化土的加固作用效应,来探讨红砂岩风化土冲击加固规律.试验结果表明：单位面积冲击能与平均冲沉量之间基本符合公式y=Aln（x）＋B的关系;填土的高度直接影响着土体的最终冲沉量值;随着单位面积冲击能的增加,土体的干密度增加;增加锤重比减少土柱高度对于抗剪强度增加的影响要大些.这些试验成果可为以后研究冲击荷载在红砂岩填土地基上的加固作用效应提供参考.

英文摘要：

Through changing two factors （hammer weight and soil column height）, different impact test schemes are designed. The relationship between impact energy per unit area and settlement with dry density, and the relationship between hammer number and the shear strength for red sandstone weathering soil are researched. According to the reinforcement effect on red sandstone weathering soil in the test, the impact strengthening rule is studied. The test results show that the relationship of the impact energy per unit area and average settlement is in compliance with y=Aln（x）＋B;the height of the soil affects directly the final impact sink amount;and the soil dry density increases with the increase of impact energy per unit area. For the influence degree of shear strength increasing, increasing the hammer weight is better than reducing soil column height. These test results provide reference for studying the reinforcement effect on red sandstone fill ground in impact tests.