DEFORMATION CHARACTERISTICS OF HYDRAULIC FILL UNDER TRAFFIC LOADING IN SHANGHAI

The deformation characteristic of hydraulic fill in Shanghai is studied in this paper. The roadbed made of hydraulic fill can be deformed liquefied under the traveling traffic loading. The same dynamic stress, different dynamic frequency are adopted to simulate the traveling traffic loading. Hydraulic fill is tested by dynamic triaxial experiment. Through the analysis of these test results, the following conclusions are drawn. With the same consolidation ratio swing, axial strain increases linearly with increasing vibration times. the axial strain increases slowly in the start of increasing pore water pressure. When pore water pressure ratio reaches the certain value,the axial strain increases quickly up to destroy. The relation between the axial strain and the radial strain and the shear strain is linear. Results of tests supply valuable reference to design, construction of roadbed and avoid disaster of engineering geological in hydraulic fill of Shanghai.