广州生活性街谷热环境设计策略研究

发布时间：2018-04-27 02:22

  本文选题：生活性街谷 + 热环境　； 参考：《华南理工大学》2014年硕士论文

【摘要】：街谷，是人、气候、建筑相互作用的集中区域，也是室外行人活动的主要场所，其热环境质量的好坏，直接关系到行人的安全、舒适和周边建筑的能耗。本文以ENVI-met模拟为主要技术手段，结合实地调研和现场测试，分析各设计要素对广州生活性街谷热环境的影响，提出面向实际的热环境设计策略，主要工作和结果如下： 通过广州市天河区20条生活性街谷的实地调研，获取广州生活性街谷的主要特征为：支路为主，次干道为辅，东西和南北走向居多；高层建筑为主，多层为辅，高宽比0.4~3；人行道和建筑浅色铺装，太阳辐射反射率0.25~0.5；街谷绿化以细叶榕为主，绿化覆盖率9%~33%。 通过广州典型生活性街谷的现场测试发现，街谷内气温分布主要由太阳辐射影响决定，街谷整体热环境呈延迟特征，ENVI-met模拟的气温和湿度误差较小，风速和MRT误差较大，SET的模拟性能为RMSE2.09℃，一致性指数0.57。 通过广州生活性街谷热环境的数值模拟正交试验发现：走向对热环境的贡献最大，其次为高宽比，绿化和表面反射率，，其中绿化的贡献中午比早晚大；最优走向为东南-西北走向，东西走向在早上和中午时段优于南北走向，晚上时段较差；高宽比取大为好，建筑高度统一比高低不一为好。 结合实地调研和现有规范，通过寻优归纳得到各级别广州生活性街谷的热环境优化设计策略和方法。
[Abstract]:Street Valley is a concentrated area of interaction among people, climate and buildings, and is also the main place for outdoor pedestrian activities. The quality of its thermal environment is directly related to the safety, comfort and energy consumption of the surrounding buildings. Taking ENVI-met simulation as the main technical means, combined with field investigation and field test, this paper analyzes the influence of various design elements on the thermal environment of Guangzhou Shengliao Street Valley, and puts forward a practical thermal environment design strategy. The main work and results are as follows: Based on the field investigation of 20 living street valleys in Tianhe District of Guangzhou City, the main characteristics of Guangzhou Shengliao Street Valley are as follows: the branch roads are the main ones, the secondary main roads are the secondary ones, the east-west and the north-south are the main ones, the high-rise buildings are the main ones, and the multi-stories are the auxiliary ones. The ratio of height to width is 0.4 ~ 3, the pavement and building are light colored, the solar radiation reflectance is 0.25 ~ 0.5.The greening of the street valley is mainly figs with a greening coverage of 90.33%. It is found that the distribution of air temperature in the canyon is mainly determined by solar radiation, and the temperature and humidity error of ENVI-met simulation is small. The simulation performance of wind speed and MRT error is RMSE2.09 鈩

本文编号：1808756