工字型城市地下人行通道的通风环境与优化设计研究

发布时间：2019-05-27 22:05

【摘要】：为探讨我国南方多雨、湿热地区城市常采用的工字型地下人行通道的内部通风环境,揭示其夏季易潮湿结露的成因,对武汉市岳家嘴工字型地下人行通道进行现场监测;内容包括通道内的空气温度、湿度、壁面温度、风速等。借助CFD数值模拟,与实测成果进行了对比研究。结果表明:工字型地下人行通道的主通道难以实现有效的自然通风,夏季通道内处于高湿状态,易出现严重的结露状况。利用马格努斯(Magnus)公式阐释了结露现象产生的原因。对工字型地下人行通道的布局方案进行优化,利用CFD数值模拟对不同优化模型进行对比,验证了优化方案的合理性,可为南方城市修建地下人行通道工程提供借鉴。
[Abstract]:In order to explore the internal ventilation environment of I-shaped underground pedestrian passageway commonly used in rainy and humid-hot areas of southern China, to reveal the causes of its easy wet condensation in summer, and to monitor the I-shaped underground pedestrian passageway in Yuejiazui, Wuhan. The contents include air temperature, humidity, wall temperature, wind speed and so on. With the help of CFD numerical simulation, the results are compared with the measured results. The results show that the main channel of I-shaped underground pedestrian passage is difficult to achieve effective natural ventilation, and it is in a high wet state in summer, so it is easy to have serious condensation. The causes of condensation are explained by Magnus (Magnus) formula. The layout scheme of I-shaped underground pedestrian passage is optimized, and different optimization models are compared by CFD numerical simulation, which verifies the rationality of the optimization scheme and can be used as a reference for the construction of underground pedestrian passage in southern cities.
【作者单位】：安徽理工大学土木建筑学院;中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室;长江科学院水利部岩土力学与工程重点实验室;中国一冶集团有限公司;
【基金】：国家自然科学基金(51579237,51309027) 江苏省自然科学基金(BK20131141) 湖北省地方标准计划项目(2013014) 深部岩土力学与地下工程国家重点实验室基金(SKLGDUEK1110)资助
【分类号】：TU921;TU962

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