Guomao station of Metro No.10 line of Beijing city is designed to cross the pile-group foundation of Guomao ground overpass. In order to evaluate the effect of creep deformation of soil around the metro on long term safety of tunnel

bridge foundation and its upper structure

some drained triaxial creep tests of soil of this site had been carried out; and then the parameters of Mesri creep model

which was found to describe the creep character of the soil samples perfectly

had been given. The study indicates that soil around the tunnel has a small quantity creep deformation; and the speed of steady creep is slow. When soil is under low diviatoric stress

the calculated creep deformations with Mesri model consist with test results well; while under high deviatoic stress

the calculated results have a little difference with test results. However

Mesri creep model can describe the creep character of Guomao station soil perfectly.