Abstract In order to evaluate the characteristics of frozen interbedded soil consisting of clay and sandy soil, in? door bending and shear experiments were carried out with a test specimen of frozen soil. Based on the bending experiments of compound beams, this paper shows the effects of preparation, location of the sand layer and the proportion of the sand layer thickness on the load, displacement, neutral axis movement, bending elastic modulus and deformation resistance. Bending and shear experiments of overlapping beams prove that the frozen interbedded soil beam may be regarded as a compound beam. Finally, an analytical method for the deformation of frozen interbedded soil is proposed, the results of which basically agree with the ones measured by an extensometer in bending experiments.
Abstract：
In order to evaluate the characteristics of frozen interbedded soil consisting of clay and sandy soil, in? door bending and shear experiments were carried out with a test specimen of frozen soil. Based on the bending experiments of compound beams, this paper shows the effects of preparation, location of the sand layer and the proportion of the sand layer thickness on the load, displacement, neutral axis movement, bending elastic modulus and deformation resistance. Bending and shear experiments of overlapping beams prove that the frozen interbedded soil beam may be regarded as a compound beam. Finally, an analytical method for the deformation of frozen interbedded soil is proposed, the results of which basically agree with the ones measured by an extensometer in bending experiments.
2016, Vol. 53 