Abstract: In this paper, the mechanical mechanism of thermal expansion buckling of no expansion joint slope pavement undergoing the action of a temperature field is analysed.By using regular perturbation method, the formula of perturbation solution for this problem is derived, the relationship between critical laying temperature difference of slope pavement and of level straight pavement is studied, and the unified solution and its.numerical results are also obtained.In terms of this research, rational laying temperature of no expansion joint slope pavement is given.

Key words: slope road pavement plate, thermal expansion buckling, perturbation solution