不同因素对粉土路基承载力影响的试验研究

Experimental Study on the Influence of Different Factors on the Bearing Capacity of Silt Roadbed

摘要: 为了分析含水率、压实度对粉土承载能力的影响，采用不同压实度和含水率对粉土进行压缩和回弹模量试验研究。结果表明：含水率对粉土的压缩系数和回弹模量影响较大，在路基施工中应严控含水率(最佳含水率 + 2%以内)，压实度越低，含水率对最终沉降量的影响越大。当含水率高于最佳含水率2%以上时，填高越大，沉降量越大。填高10 m沉降量平均为5 m的4倍左右。

Abstract: In order to analyze the influence of moisture content and compaction degree on the bearing capacity of loess, compression and rebound modulus tests were conducted on loess with different compaction degrees and moisture contents. The results show that the moisture content has a significant impact on the compression coefficient and rebound modulus of loess. In roadbed construction, the moisture content should be strictly controlled (within the optimal moisture content + 2%). The lower the compaction degree, the greater the influence of moisture content on the final settlement. When the moisture content is higher than the optimal moisture content by more than 2%, the higher the filling height, the greater the settlement amount. The average settlement of filling a height of 10 m is about 4 times that of 5 m.