高频热扰对地铁隧道土壤温度的影响
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上海科委基金资助项目(07dz(2022))


Effect of High-frequency Thermal Disturbance on Soil Temperature around the Metro Tunnels
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    摘要:

    在考虑地铁区间内空气与周围土壤耦合换热的基础上建立地铁土壤温度预测模型。利用有限差分法对该模型进行数值求解,并将针对特定问题的求解结果与解析解进行了对比验证。将由列车运营带来的高频热扰简化成3种不同形式,利用土壤温度预测模型求出相应的土壤温度响应。模拟的结果发现高频热扰对区间空气以及壁面会带来明显的温度波动,但是对土壤内部的温度分布影响有限。

    Abstract:

    Soil temperature prediction model around the subway metro tunnels is constructed with the consideration of coupled heat transfer between range temperature and surrounding soil. Finite difference method is adopted for numerical solution of the model, and the solving results in certain conditions are compared to validate the analytical solution. The high-frequency thermal disturbance brought by train operation is simplified into three different forms, and the predictive model of soil temperature is used to calculate the corresponding soil temperature response. It is indicated that temperature fluctuations of range air and the wall are accompanied with high-frequency thermal disturbance, but the impact on soil temperature distribution inside is limited.

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于连广,吴喜平,于赫男.高频热扰对地铁隧道土壤温度的影响[J].土木与环境工程学报(中英文),2011,33(5):95-101. YU Lian-guang, WU Xi-ping, YU He-nan. Effect of High-frequency Thermal Disturbance on Soil Temperature around the Metro Tunnels[J]. JOURNAL OF CIVIL AND ENVIRONMENTAL ENGINEERING,2011,33(5):95-101.10.11835/j. issn.1674-4764.2011.05.016

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