拟建三星级绿色高铁站房室外风环境评价与优化设计策略

Outdoor Wind Environment Evaluation and Optimization Design Strategy of the Proposed Three-Star Green High-Speed Railway Station

以拟建合肥西站为例,应用CFD软件Fluent模拟典型工况下拟建建筑室外风环境,并结合《绿色建筑评价标准》进行达标判断。结果显示:夏季工况下,高铁站室外北部风速小于0.2 m/s的区域较多,西北部和南部均有小范围风速超限区和旋涡区;冬季工况下,人行区出现风速超过5 m/s的区域、户外休息区域和儿童娱乐区域风速不能超过2 m/s、人行区存在风速放大系数大于等于2的区域。针对室外风环境现状问题建立不同模拟工况,从场地布局、建筑形态和景观设计等方面提出风环境优化设计策略。研究可丰富我国交通建筑在绿色技术方面的理论架构,为铁路客站绿色设计和改造提供参考。

This paper took the proposed Hefei West Station as an example,used CFD software Fluent to simulate the outdoor wind environment of the proposed building under typical working conditions,and made a judgement on meeting the standard by combining with the Assessment Standard for Green Building.The results show that:under summer conditions,there is a large area with wind speed less than 0.2 m/s in the north of the high-speed railway station outdoor,and there are a small range of wind speed overrun areas in the northwest and south,with some vortex areas;under winter conditions,areas with wind speeds greater than 5 m/s occur in the pedestrian area,while the wind speed in the outdoor rest area and children′s entertainment area is no greater than 2 m/s,areas with a wind speed amplification factor greater than or equal to 2 also appear in the pedestrian area.Based on the current problems of outdoor wind environment,different simulation conditions were established,wind environment optimization design strategies were proposed from aspects of site layout,architectural form,and landscape design.The research can enrich the theoretical framework of green technology in China′s transportation buildings,and provide a reference for the green design and transformation of railway passenger stations.