Accurate liquefaction test of sand without settlement of particles in the specimen

研制了一种新型的三轴仪，通过防止砂粒在试验过程中沉降来保持试样密度的均匀性，从而精确测量砂粒的液化阻力。对有颗粒沉降的序贯试验结果与施加向上渗流消除重力的无沉降试验结果进行了比较。结果表明，两种条件下的结果差异不大。

A new triaxial apparatus was developed to measure accurete liquefaction resistance of sand keeping homogeneity of density of the specimen by preventing the settlement of sand particles during the test procedure. The test results from ordinal test with settlement of particles and the new test without settlement by applying upward seepage flow which cancels the gravity were compared. It was found that the difference of the results from these two conditions was small.