Study on liquefaction behavior of saturated silt in Anhui area by dynamic triaxial test

摘要

The liquefaction failure is the most and direct reason that can make the saturated silty foundation invalidate and the structure collapse. Herein, it is quite necessary to analyze the liquefaction behavior of the saturated silty soil in Anhui area under high earthquake shock by performing a series of dynamic tri-axial tests. In the testing, the test sample is remolded according to the given density of the saturated silt collected from Anhui area. And the test is carried out with the remolded samples under different confining pressure varying from 1 m to 15 m depth. During the dynamic triaxial test, the increasing law of liquefaction resistance, the active influence of the radial pressure and dry density of the remolded saturated silt are all obtained. Meanwhile, the maximum liquefaction depth of the saturated silt in Anhui area are also obtained, which can provide valuable data for the further research of the engineering measures such as gravel piles that can prevent from liquefaction.