亚热带季风地区地铁高架站热舒适性分析
Thermal Comfort Analysis of Subway Elevated Station in Subtropical Monsoon Region
汪登峰1
作者信息
- 1. 中铁十一局集团 电务工程有限公司,武汉 430017
- 折叠
摘要
为研究亚热带季风地区地铁高架站自然通风条件下乘客的热舒适性体验现状,提高地铁乘车服务水平,以长沙市地铁某侧式和岛式高架站为对象,选取夏季典型日的最热时段,在站台层进行热环境实测,根据测算结果分析该工况下的热环境分布状况.以实测的风速、温度等数据为基础,采用计算流体力学软件Fluent模拟了该气候条件下侧式和岛式高架站的风速场和温度场变化情况,提取了1.5m处风速和温度的平均数值,并选用相对热指标RWI评价了站台层的热舒适性.结果表明:现场实测的热环境除温度和风速外,均满足室内空气质量标准;相同的室外气象条件下,侧式站台和岛式站台的风速场和温度场变化明显不同,岛式站台的热舒适性体验和侧式站台相差不大.
Abstract
In order to study the thermal comfort experience status of passengers under natural ventilation conditions at elevated subway stations in subtropical monsoon area and improve the level of subway service,a side and island elevated subway station in Changsha City was selected as the object,and the thermal environment was measured at the platform floor during the hottest period of a typical summer day,and the thermal environment distribution was analyzed according to the calculation results.Based on measurements of wind speed,temperature,and other data,the computational hydrodynamics software,Fluent,was used to simulate the variability of the wind speed and temperature fields at the side and island elevated stations in this climate.The mean values of the wind speed and temperature at 1.5 m were extracted and the relative thermal index(RWI)was used to assess the thermal comfort of the platform layer.The results showed that the measured thermal environment met the indoor air quality standards,except for the temperature and wind speed.Under the same outdoor meteorological conditions,wind speed and temperature field variations are significantly different on the side platform and the island platform,and the thermal comfort experience on the island platform is similar to that of the side platform.
关键词
高架站/热舒适性/自然通风/数值模拟/现场实测Key words
elevated station/thermal comfort/natural draft/numerical simulation/field measurement引用本文复制引用
出版年
2023
NETL
NSTL
维普
万方数据