埋管形式对水热式桥面融雪的影响

发布时间：2018-01-10 19:31

本文关键词：埋管形式对水热式桥面融雪的影响　出处：《华南理工大学学报(自然科学版)》2014年05期 　论文类型：期刊论文

【摘要】：应用有限元程序建立了数值模型,利用有限差分法对稳态工况下的桥面融雪过程进行热力仿真分析,以山区温泉水为热流体介质研究了环境温度为-5℃、表面风速为2 m/s、水温为15℃条件下埋管间距、埋管深度对融雪过程中桥面温度分布及热流密度的影响规律.结果表明:埋管周围等温线分布较密,热流密度较大;埋管深度与埋管间距对桥面温度与热流密度分布的均匀性有较大的影响,较小的埋管深度与埋管间距有利于提高桥面表面温度并具有较大的热流密度,促进融雪进程和速率.综合考虑融雪效果、施工、经济性等多方面的因素,建议埋管深度为2cm,埋管间距为15cm.
[Abstract]:By using the finite element numerical model was established by using the finite difference method of deck snowmelt process under steady state thermal simulation analysis, the mountain spring water thermal fluid medium on the environmental temperature of -5, the surface wind speed is 2 m/s, the water temperature is 15 DEG C under the condition of buried pipe spacing, depth of buried pipe influence of the snow melting process of deck temperature distribution and heat flux. The results show that the temperature distribution around the pipe is dense, the heat flux is larger; the pipe depth and buried tube spacing have great influence on the uniformity of Deck Temperature and heat flux distribution, pipe depth and buried tube spacing can improve the surface temperature and the deck with larger heat flow density smaller, and promote the process of snowmelt rate. Considering the construction of snow melt effect. Many factors, such as economy, that depth of buried pipe 2cm, pipe spacing is 15cm.

【作者单位】：长安大学材料科学与工程学院;长安大学公路学院;
【基金】：国家自然科学基金资助项目(51108038,51108039) 长安大学中央高校基本科研业务费专项资金资助项目(CHD2012ZD016) 陕西省科技厅项目(2013KW24,2013kjxx-94)
【分类号】：U445.7
【正文快照】： 近年来,冬季极端性和恶劣气候导致的路面及桥面积雪结冰问题,易引发严重的交通事故,造成巨大的经济损失.目前世界各国为解决道路积雪问题采用了多种方法,如撒布融雪剂[1-3]、人工机械清除[3-5]、橡胶颗粒路面抑制冰雪[6-7]、导电铺面融冰雪[8]、热力和能量转化型融冰雪[9-12]

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