淤泥质砂土抗液化性能的动三轴试验研究

通过分别对不同配比的重塑淤泥质砂土试样进行室内动三轴试验,以进行淤泥质砂土抗液化性能的研究,探究砂颗粒粒径、颗粒级配和淤泥含量对淤泥质砂土抗液化性能的影响。研究结果表明:当粒径单一时,其抗液化性能随粒径的增大而增大;当为两种以上颗粒级配时,颗粒粒径跨度较大的级配不利于抗液化,连续的颗粒级配有利于抗液化;淤泥含量为影响其抗液化性能的重要因素,10%左右淤泥含量时抗液化能力最差,在此基础上增大或减小淤泥含量均增强其抗液化能力。

Study on the Dynamic Triaxial Test of Silty Sand Anti-liquefaction Performance

In order toSresearch siltySsand liquefaction resistance,Sexploring the sand particle size, particle distribution, and siltScontent on the properties of siltySsand liquefaction resistance, indoor tests of anti-liquefaction properties in different ratio of reshape silty sand specimenSrespectively by dynamic traxial apparatus are studied. Tests indicate that, when the particle size is single, its anti-liquefaction performance increases with the increase of particle size. When two or more granules are fitted, the grading of larger particle size span is unfavorable to anti-liquefaction, and continuous particle grading is conducive to anti-liquefaction. The silt content is an important factor affecting its anti-liquefaction performance, and the anti-liquefaction ability is the worst in about 10% of the silt content, which enhances its anti-liquefaction ability by increasing or decreasing the silt content.