| 摘要: |
| 干热地区室外高温、干旱的气候特
征显著，商业街区作为城市经济发展和市民
社交活动的主要场所，改善其室外热舒适将
直接影响市民对商业街区的满意度及街区商
业价值。为了探究干热地区商业街区夏季热
舒适影响因素，本研究以位于干热地区石河
子市某商业街区作为研究对象，在夏季对该
街区室外热环境进行实测调研， 并利用
ENVI-met 从街区遮阳设施、水体景观、绿
植覆盖率等方面进行数值优化模拟，选取
UTCI 作为热舒适评价指标，生成街区热舒
适优化方案。研究发现，综合提升绿植覆盖
率、设计遮阳设施与水体景观能显著改善街
区热舒适。本研究对提升干热地区商业街区
夏季室外热环境质量、改善人体热舒适具有
重要意义。 |
| 关键词: 干热地区 商业街区 室外热舒
适 室外热环境 优化策略 |
| DOI：10.13791/j.cnki.hsfwest.20241212003 |
| 分类号: |
| 基金项目:国家自然科学基金面上项目（52278093） |
|
| Simulation research on the influence factors of summer thermal comfort in urban commercialstreets in dry and hot area: Taking Shihezi City as an example |
|
SU Yuan,PENG Tiantian,LI Jiaqi
|
| Abstract: |
| The outdoor high temperature and arid climate of dry and hot area are significant, and as
the main place of urban economic development and citizens’ social activities, improving the outdoor
thermal comfort of commercial neighborhoods will directly affect citizens’ satisfaction with
commercial neighborhoods and the commercial value of the neighborhoods. In this study, a
commercial block in Shihezi City, a dry and hot area, was selected as the research object, and the
outdoor thermal environment of the block were measured and investigated in the summer, and
numerical optimization simulation was carried out by using the ENVI-met software in terms of the
block shading facilities, water landscape, green plant coverage, etc., to generate the optimization
scheme of the block's thermal comfort, so that the optimization scheme of the block's thermal comfort
can provide a reference for the planning and transformation of the urban commercial street area in a
hot and dry area and the improvement of the thermal comfort in the summer. The optimization scheme
was generated in order to provide a reference for the planning and renovation of urban commercial
streets in dry and hot area and the improvement of summer thermal comfort.Given the complex urban
environment, commercial districts are often characterized by high building density and extensive hard
surfacing, such as asphalt roads and concrete structures, which can lead to significant urban heat
island effects. In dry and hot climates, these factors are further exacerbated by the lack of natural
water bodies and limited vegetation cover. This study aims to address these challenges by providing
practical and sustainable solutions for improving outdoor thermal comfort in such environments.To
achieve this goal, the research employed a multi-method approach. Field investigations were
conducted during peak summer conditions to collect extensive microclimate data, including air
temperature, relative humidity, wind speed, and solar radiation intensity, at multiple locations
throughout the commercial district. These measurements provided the foundation for detailed ENVImet
simulations that evaluated various environmental modification strategies.The Universal Thermal
Climate Index (UTCI) served as the primary metric for assessing thermal comfort improvements. The
study systematically examined three key intervention approaches: enhancement of vegetation
coverage, implementation of shading structures, and integration of water features. The research
revealed that vegetation plays a crucial role in moderating thermal conditions, with optimal benefits
achieved through strategic placement of drought-resistant species that provide adequate shade while
minimizing water requirements. Increasing vegetation coverage to approximately 35%-40%
demonstrated significant cooling effects, particularly when concentrated in high-activity zones.
Shading structures proved most effective when combining permanent architectural elements with
adjustable components, allowing for flexibility in response to changing solar angles throughout the
day. Water features, while providing valuable evaporative cooling, required careful design to balance
their thermal benefits with water conservation needs in the arid environment.The study also identified
critical periods when interventions would yield maximum benefits, particularly during early afternoonhours when thermal stress peaks. Spatial optimization models helped identify priority areas for intervention, with gateway plazas, seating areas, and main
pedestrian corridors showing particularly strong responses to combined mitigation strategies. The practical implications of this research extend beyond
immediate thermal comfort improvements. The proposed strategies demonstrate how careful environmental design can enhance the commercial viability and
social functionality of urban spaces in challenging climates. By establishing quantitative relationships between design parameters and thermal comfort
outcomes, the study provides a framework for evidence-based decision making in urban development projects. The integration of sustainability principles
throughout the proposed solutions ensures that thermal comfort improvements align with broader environmental goals, particularly in water-scarce regions.
This research contributes to the growing body of knowledge on climate-responsive urban design, offering specific, actionable strategies for creating more
livable commercial spaces in dry-hot climates. Based on the extensive field measurements and advanced computational simulations, the study not only offers
valuable guidance for urban planners and designers working in similar climatic conditions but also highlights the nonlinear relationships between intervention
intensity and thermal improvement, suggesting optimal thresholds beyond which additional investments yield diminishing returns. Furthermore, this research
underscores the importance of considering the interplay between different environmental factors and their cumulative impact on thermal comfort, which is
essential for developing holistic and effective urban design strategies in dry and hot regions. |
| Key words: dry and hot regions commercial block outdoor thermal comfort outdoor thermal environment optimization strategi |
