橡胶颗粒混合砂抗液化性能研究

Research on Anti-liquefaction Performance of Rubber Particle Mixed Sand

为了探究橡胶颗粒掺入砂土路基制成混合砂材料时的抗液化性能,通过筛分试验及动三轴试验开展相关研究,分别分析了橡胶颗粒掺量、粒径及混合砂材料的围压大小、固结比等变化对混合砂试样动孔隙水压力的影响规律,从而评价其对抗液化性能的影响。结果表明:橡胶颗粒掺量、粒径、围压及固结比均是影响混合砂材料抗液化性能的主要因素,且呈正相关变化趋势。

In order to study the liquefaction resistance of rubber particles mixed into sand subgrade to make mixed sand material,the related research is carried out through screening tests and dynamic triaxial tests.The influences of changes in confining pressure and consolidation ratio of rubber particle dosage,grain size and mixed sand material on the dynamic pore water pressure of the mixed sand specimen are individually analyzed so as to evaluate the influence on the liquefaction resistance.The results show that the rubber particle dosage,grain size,confining pressure and consolidation ratio are all the main factors affecting the liquefaction resistance of mixed sand materials,and a positive correlation trend presents.