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首页> 外文会议>International Conference of Concrete Pavement,China(耐久性水泥混凝土路面学术交流会） >Numerical Simulation of Subgrade Temperature Field in Seasonal Freezing Region
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Numerical Simulation of Subgrade Temperature Field in Seasonal Freezing Region

机译：季节冻结区路基温度场的数值模拟

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摘要

Jixi region in Heilongjiang Province, China, is adopted as a seasonal freezing region to analyze its disease mechanism of heave and frothing. By the finite element method, the process of freeze-thaw phase transition of the subgrade with the mixed boundary conditions of the 2nd and 3rd type is considered and the variation of subgrade temperature field in seasonal freezing region is analyzed. While the depth of freezing and thawing is gotten, the time of freezing and thawing is obtained. The numerical model is established based on the meteorological data in daffy period. The result keeps well with the actual situation and can be used to predict the subgrade temperature field accurately, which makes a solid theoretical foundation of the further study on the coupling of the beat-moisture-stress field about the highway subgrade in the seasonal freezing region.
机译：以中国黑龙江省鸡西地区为季节性冰冻地区，分析了其起伏和起泡的发病机理。采用有限元方法，考虑了第二，第三类混合边界条件下路基的冻融相变过程，分析了季节性冻融区路基温度场的变化。在获得冷冻和解冻的深度的同时，获得了冷冻和解冻的时间。根据达菲时期的气象数据建立了数值模型。计算结果与实际情况吻合良好，可用于准确预测路基温度场，为进一步研究季节性冻土区公路路基的跳动-水分-应力场耦合提供了坚实的理论基础。 。

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