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Towards an Integrated Pedestrian Thermal Comfort Assessment System: An Agent-Based Approach.

机译：迈向综合行人热舒适性评估系统：一种基于代理的方法。

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摘要

Pedestrians are important to sustainable cities. How to make outdoor spaces attractive to pedestrians has long been a primary concern in urban planning and design. The outdoor microclimate is found to be an important factor in affecting pedestrian's behaviors, i.e. space use. One key issue in this respect, is to evaluate the impact of the microclimate on pedestrian's thermal comfort condition. An effective tool that allows detailed investigation of pedestrian's thermal comfort and also provides implications of space use is in great need.;Effective assessment of pedestrian's thermal comfort is both a research challenge and a practical crux. Traditional bio-meteorological indicators such as PMV are only suitable for steady state subjects therefore will normally result in discrepancies when applied to transient conditions. Evaluation methodologies are also absent in the behavioral aspects: pedestrian traffic is always directed by certain activities, suggesting that their thermal comfort assessment should bear considerations of pedestrian's behaviors in order to provide pertinent planning implications.;The thesis establishes a conceptual framework for "context-sensitive" assessment on the meso-scale, and proposes to link the assessment of pedestrian's thermal comfort condition to the comprehensive urban context and therefore their activities . An integrated system is implemented with a comprehensive representation of the urban environment. A promising modeling technique, the agent-based modeling approach is taken to overcome the limitations imposed by traditional top-down models . The agent-based model simulates pedestrian's behaviors from the disaggregated scale, allowing detailed investigations of individual pedestrian's dynamic thermal comfort conditions . By examining system behavior emerged from the interactions of different individuals, implications for planning could also be revealed on the aggregated scale. With support of geographical information system, the system could be applied in real world context with complex urban environment. A detailed case study using a downtown area in Hong Kong as an example is explored to demonstrate the advantage of the agent-based modeling approach.;Through the case study, it is found that the presented agent-based simulation system can bring dynamic and behavioral understandings in investigating pedestrian's thermal comfort, which are more relevant in outdoor space planning but is not possible using traditional thermal comfort assessment methods. This suggests that the agent-based modeling approach is a good complement to traditional static and aggregated methods.;To sum up, the thesis work has significance from conceptual, technical and practical perspectives in terms of developing a spatial decision support tool. Conceptually, the thesis identifies the need for "context-sensitive" assessment in investigating pedestrian's thermal comfort, and adopts the agent-based modeling paradigm to account for pedestrian's dynamic and individualized features. Technically, an integrated GIS-based computational system is implemented to simulate pedestrian movement and assess pedestrian's thermal comfort from both static and dynamic aspects. Practically , the system can be applied in real world context and provide implications in urban design.
机译：行人对可持续发展的城市至关重要。长期以来，如何使室外空间对行人具有吸引力一直是城市规划和设计中的首要问题。发现室外小气候是影响行人行为即空间使用的重要因素。在这方面，一个关键问题是评估微气候对行人热舒适状况的影响。迫切需要一种能够对行人的热舒适度进行详细调查并提供空间使用含义的有效工具。有效评估行人的热舒适度既是研究的挑战，也是实践的重点。传统的生物气象指标（例如PMV）仅适用于稳态对象，因此在应用于瞬态条件时通常会导致差异。在行为方面也没有评估方法：行人交通总是由某些活动指导的，这表明行人的热舒适性评估应考虑行人的行为，以提供相关的规划含义。本文为“上下文-环境”建立了概念框架。中等规模的“敏感”评估，并建议将对行人的热舒适条件的评估与城市综合环境以及他们的活动联系起来。实施综合系统，全面反映城市环境。基于代理的建模方法是一种有前途的建模技术，它可以克服传统自上而下模型带来的限制。基于代理的模型从分解的规模模拟行人的行为，从而可以详细研究各个行人的动态热舒适条件。通过检查系统行为是从不同个人的互动中产生的，对计划的影响也可以在总体规模上揭示出来。在地理信息系统的支持下，该系统可以在复杂的城市环境下应用于现实世界。以香港市区为例进行了详细的案例研究，以证明基于主体的建模方法的优势。通过案例研究，发现所提出的基于主体的仿真系统可以带来动态和行为在研究行人的热舒适度方面的理解，这与室外空间规划更相关，但使用传统的热舒适度评估方法则不可能。这表明基于智能体的建模方法是对传统的静态和聚合方法的很好补充。综上所述，论文的工作从概念，技术和实践的角度对开发空间决策支持工具具有重要意义。从概念上讲，本文确定了在研究行人的热舒适性时需要进行“上下文敏感”评估，并采用基于代理的建模范例来说明行人的动态和个性化特征。从技术上讲，基于GIS的集成计算系统可用于模拟行人运动并从静态和动态方面评估行人的热舒适度。实际上，该系统可以在现实世界中应用，并为城市设计提供启示。

著录项

  • 作者

    Chen, Liang.;

  • 作者单位

    The Chinese University of Hong Kong (Hong Kong).;

  • 授予单位 The Chinese University of Hong Kong (Hong Kong).;
  • 学科 Environmental Sciences.;Urban and Regional Planning.
  • 学位 Ph.D.
  • 年度 2010
  • 页码 243 p.
  • 总页数 243
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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