居住区绿地改造夏季热环境模拟与优化策略研究  

Research on Thermal Environment Simulation and Human Thermal Comfort Optimization of Green Space in Residential Areas

作　　者：冯晓刚[1] 杨永佺 李萌[1] 周在辉[1] 李凤霞[1] FENG Xiaogang;YANG Yongquan;LI Meng;ZHOU Zaihui;LI Fengxia

机构地区：[1]西安建筑科技大学建筑学院 [2]山东省冶金设计院股份有限公司

出　　处：《西部人居环境学刊》2023年第5期59-64,共6页Journal of Human Settlements in West China

基　　金：国家自然科学基金青年基金(51608419);陕西省自然科学基金项目(2018JM5073);陕西省教育厅专项基金项目(18JK0453);西安建筑科技大学自然科学专项基金项目(ZR19001)。

摘　　要：为了定量分析绿地结构及其模式对夏日室外温湿度、风速的影响,综合运用三维非静力模式ENVI-met对住宅区绿地改造前后进行对比分析。结果表明:ENVI-met模拟结果与实况接近,能较好反映温湿度变化情况;“中心+宅间”绿地模式中,增加高大乔木及场地树阴,改造后温度平均降幅0.2~1.13℃;改造后相对湿度提升1.61%~5.87%,且上午较下午显著;改造后由于缺失通风廊道而导致风速降低。UTCI结果显示改造后的居住区热舒适下午改善效果较上午明显,平均降幅0.72℃。因此,基于现有场地约束性条件对小区内现存绿地的布局、形态结构、植被搭配及通风廊道的营造,是现阶段针对老旧小区人居热舒适提升的可行性方法。Urban green space is one of the ecological landscapes coupling the artificial and natural elements of the city,which provides the basic environment for urban biodiversity on the one hand and the urban thermal ecology on the other,which is of great significance to the ecological barrier to build livability and effectively enhance the thermal comfort and happiness of the community.This paper focuses on the impact of urban green space systems on the thermal environment at the community scale based on the three-dimensional non-hydrostatic ENVI-met model,it is centered on“plant-surface-atmosphere”interactions.This paper takes the renewal and optimal transformation of urban green spaces in the neighborhoods in urban renewal actions as a starting point,and use the ENVI-met model to simulate the thermal environment outdoors in the neighborhoods,and the study the quantitative effects of green space transformation on temperature and humidity,wind speed,and habitat thermal comfort at the neighborhood scale in hot summer weather.Meanwhile,we conduct quantitative analysis of habitat thermal comfort before and after green space transformation in the study area based on the Universal Thermal Climate index(UTCI)model,to clarify the effects of green space combination pattern and its structural layout and vegetation configuration on the local thermal environment,and to propose corresponding optimization strategies.The model od UTCI is a comprehensive consideration of multiple factors such as human metabolic heat dissipation and clothing thermal resistance,combined with a multi node thermophysiological model and clothing models.The research results show that the UTCI is more sensitive to meteorological factors than other thermal comfort indices,and can be used for research on high temperature and human health.In order to provide a quantitative basis for the influence of green space layout and structural configuration on outdoor temperature,humidity,wind speed and thermal comfort in urban renewal.This study takes residential are

关 键 词：居住区绿地 环境模拟 小区更新 热舒适度 通用热气候指数 

分 类 号：TU985.125[建筑科学—城市规划与设计]