|Table of Contents|

Test and numerical simulation on subgrade temperature field of cement concrete pavement structure(PDF)

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

Issue:
2011年02期
Page:
1-5
Research Field:
Publishing date:
2011-04-30

Info

Title:
Test and numerical simulation on subgrade temperature field of cement concrete pavement structure
Author(s):
MAO Xue-song1;  LU Lu2;  GESANG Ze-ren3;  HOU Zhong-jie1
1. Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang'an University, Xi'an 710064, Shaanxi, China; 2. Southwest Geotechnical & Design Institute of China Nuclear Industry, Chengdu 610061, Sichuan, China; 3. Tibet Communications Science Research Institute, Lasa 850000, Tibet, China
Keywords:
road engineering;  subgrade;  temperature infield;  field test;  numerical simulation;  boundary situation
PACS:
U411
DOI:
-
Abstract:
The distribution and change of subgrade temperature is critical to the stability of cement concrete pavement in seasonal frost region. Based on the infield test datum of subgrade temperature filed in Jixi-Nahe highway of Heilongjiang Province, the changing law of subgrade temperature is analyzed, and the model is established. The numerical simulation is carried out under the first boundary situation(additional layer theory)and the second, third boundary situation. The results show that the internal temperature change of subgrade lagged is behind the outer climate temperature. The numerical simulation of temperature with the second, third boundary situation is superior to the first boundary situation at accuracy, which is near to the infield test datum. Along the subgrade depth, the temperature difference between the calculation under the first boundary situation and the test is the most, when the site is near to the subgrade surface, and tends to be small little by little when the site is far away the surface. However the difference between the second, third boundary situation is consistent to the infield test data, and can be applied for predicting the subgrade temperature field. 1 tab, 6 figs, 10 refs.

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Last Update: 2011-04-30