Status Analysis of the Frozen Soil’s Dynamics Parameter Study

Abstract

In this paper, the author points out several key problems needed to be solved about the dynamics of frozen soil by reviewing related literatures about hysteretic curve of frozen soil ,dynamic constitutive relation and dynamical parameter. The problems are the insufficient understanding on morphological characteristics of hysteretic curve and how to transform qualitative understanding into quantitative understanding about morphological characteristics of hysteretic curve. The problem is the rationality of selecting the dynamic constitutive model, namely how to establish the engineering applicable model which conforms to the actual soil mechanics performance.The problem is the rationality of the calculation method about dynamic elastic modulus and damping ratio, namely how to define dynamic modulus of elasticity of frozen soil correctly and the limitation of using the classical method to calculate the damping.

Experimental Study on the Dynamic Characteristics of Frozen Silty Clay and Its Influencing Factors

“…Frozen soil is a complex multi-phase and multi-component system, including vapor and air in gaseous phase, mineral particles and ice in solid phase, and unfrozen water in liquid phase. Therefore, when the soil type (mineral particles) is determined, some physical parameters of frozen soil will be greatly influenced by soil temperature and soil water content [25,26]. Thus, three soil water contents (14%, 16%, 18%) and four soil negative temperatures (−0.3 • C, −1 • C, −3 • C, −5 • C) were considered in this study.…”