By applying different amounts of strain along with the welding ther-mal cycle simulation, the time of fracture and the creep ductility were measured by the short-time creep test so as to estimate the tendency of the welding reheat cracking.

Data processing and viscoelastic computation for creep test of asphalt mixture;

In order to study aluminum alloy creep age forming and present aluminum alloy creep constitutive model used in creep age forming FE simulation,7B04 aluminum alloy creep mechanical property was studied by carrying out creep tests under different stress levels at different temperature such as 145℃,155℃ and 165℃.

Uniaxial creep test had been carried out for 10CrMo910 steel at 550℃.

Based on the creep experiments for CE131 geonet and SDL25 geogrids,under long-term load and different load levels,the creep characteristic is studied.

Through the uniaxial compression creep experiment of surrounding rock of Qinling tunnel at different temperature, the creep law of the surrounding rock at different temperature was obtained in this paper,the creep model which can describe the property of surrounding rock was derived ,and the parameters of the model were determined by using experiment data.

Based on the uniaxial creep experiment with step-loading,the long term strength of pillar rockmass before grottoes No.