Experimental research on creep of Shanghai sands

The mechanism and features of creep of Shanghai sands are researched through oedometer tests.The effects of stress histories on creep deformation are also investigated.The experimental results show that the Shanghai sands exhibit nonlinear creep obviously;and the relationship of stress-strain-time can be expressed by power functions.The stress histories have significant effects on the creep of sands.When the load is less than the preloading,the creep of sands is unremarkable.The main reason for creep of Shanghai sands is that the sand grains slide along one another.