Numerical Simulation for the Seasonal Change of the Temperature and Humidity Field of Embankment in Moist Heat Areas

Abstract:

Taking the meteorological data in Fuzhou area in 2011 as an example, this paper investigate the seasonal change of the temperature and humidity field of embankment in moist heat areas based on the finite difference technology programmed Moisture-heat coupled procedure. The results show that the highest temperature in the soil surface of embankment is near 40°C and the highest temperature gradient is up to 0.22°C/cm in summer. The lowest temperature is near 10°C and the highest temperature gradient is up to-0.21°C/cm in winter. Fluctuation range of the water content in the surface of the embankment (0cm~10cm) is between 3% and 20%, and fluctuation range of the water content of the shallow soil layer of embankment (10cm~50cm) is between 10% and 20%, and the water content in the deep layer of embankment (50cm~250cm) changes not apparently with season. If the temperature gradient of soil is 0°C/cm and the yearly fluctuation range of the water content of the embankment is 2%, the temperature and humidity of the embankment that can be affected by the climate of the Fuzhou area is in the depth of about 4.0m and 2.5m respectively.

• Periodical: Applied Mechanics and Materials (Volumes 587-589)
• Pages: 1295-1300
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.587-589.1295
• Online since: July 2014
• Authors: Yun Que, Jia Chen
• Keywords: Evaporation, Moisture-Heat Coupled, Rainfall, Subgrade Engineering, Temperature and Humidity Field

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