Title Finite-element simulations of a road embankment based on a constitutive model for frozen soil with the incorporation of damage
Author Zhu Zhiwu; Ning Jianguo; Song Shuncheng
Author Affil Zhu Zhiwu, Southwest Jiaotong University, School of Mechanics and Engineering, Sichuan, China. Other: Beijing Institute of Technology, China
Source Cold Regions Science and Technology, 62(2-3), p.151-159, . Publisher: Elsevier, Amsterdam, Netherlands. ISSN: 0165- 232X
Publication Date July 2010
Notes In English. Based on Publisher- supplied data GeoRef Acc. No: 309542
Index Terms damage; design; embankments; frozen ground; ice; models; sediments; simulation; soil mechanics; strains; stresses; clastic sediments; constitutive equations; elastic constants; finite element analysis; numerical analysis; sand; strain; stress
Abstract Based on the microcosmic mechanics of composite materials, an elastic constitutive model for frozen soil with damage is proposed and presented in this paper. The model is then applied to frozen sandy soil with a range of ice contents and various temperature conditions; quantitative results agree well with practically measured stress-strain data. A finite-element (FE) routine is developed, incorporating the constitutive model, to simulate a frozen roadbed that contains water, temperature and stress variables; it leads to more accurate results for the temperature field coupled with stress, displacement and strains. The results from the current study match well the previous predictions and tests results undertaken by other researchers, and confirm the reliability of the FE routine for calculating the interdependent physical quantities of frozen soils as well as defining their relationships. It is demonstrated that the current FE program developed is particularly suitable for practical design applications in permafrost regions.
URL http://hdl.handle.net/10.1016/j.coldregions.2010.03.010
Publication Type journal article
Record ID 65006565