TY - JOUR
TI - Thermo-mechanical coupling analysis and software development
AU - Chai Jianwei
AU - Ai Hua
AU - Liu Ting
JN - Thermal Science
PY - 2021
VL - 25
IS - 4
SP - 3199
EP - 3208
PT - Article
AB - In order to quickly and accurately grasp the law of freeze-thaw reaction of  permafrost slopes, based on the hydro-thermal-mechanical coupling theory,  relying on MATLto compile a finite element program that can reflect the  multi-field coupling mechanism of the soil. This test is in good agreement  with the classic test, which verifies the reliability of the program. Based  on this, the paper developed a set of water-thermal-mechanical coupling  analysis software for permafrost slopes that can run independently and is  easy to operate. The software's functions and development process are  introduced. The response characteristics of frozen soil slopes under freezing  and thawing are analyzed in combination with the example papers. The results  show that the slope temperature, moisture, stress and displacement are  obviously different at different times. The maximum shear stress band appears  at the freezing-thawing interface of the slope. The horizontal displacement  of the slope is basically the same along the slope when the freezing is  completed. At the end of the thawing period, the upper part and the lower  part are large. The horizontal displacement and unfrozen water content of the  slope during the thawing period are larger than those during the freezing  period, but the maximum shear stress is small and the stability of permafrost  in the warm season is poor. It has important application value for  freeze-thaw calculation of frozen soil slope engineering.