|Table of Contents|

emperaturedisplacement field coupling analysis in freezethaw process of soil(PDF)

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2009年05期
Page:
25-29
Research Field:
Publishing date:
2009-10-20

Info

Title:
emperaturedisplacement field coupling analysis in freezethaw process of soil
Author(s):
HOU Shuguang1; 2;  SHA Aimin1
1. School of Highway, Changan University, Xian 710064, Shaanxi, China; 2. School of Civil Engineering, Nanjing University of Technology, Nanjing 210009, Jiangsu, China
Keywords:
road engineering;  subgrade freezethaw of soil;  temperature field;  displacement field;  numerical simulation;  coupling analysis
PACS:
U419.92
DOI:
-
Abstract:
The temperaturedisplacement coupling simulation is carried out in freezethaw process of soil using ABAQUS software, the physical and mechanical parameters of soil is defined as function of temperature, the boundary conditions of simulation model is uniform to that of laboratory test mode, which is to carry out soil temperature field numerical simulation in freezethaw process firstly, and then, as field variable, the temperature field is introduced when displacement field is simulated. In order to ensure temperature field is correspond to displacement field at the same time, time step of calculation is identical in the two fields simulating. The simulation results show that in laboratory test the phenomenon of frost swelling occurs at earlier stage of freezethaw process and then at the thawing statement continually, the phenomenon of frost swelling does not happen in simulation curves. Since the frost swelling is tiny, it would not affect final soil settlement. So the presented numerical method is propitious to simulate frozen soil thawing. 1 tab, 7 figs, 10 refs.

References:

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Last Update: 2009-10-20