基于场景迭代的数字孪生城市构建逻辑

The Scenario Iteration Logic for Constructing the Digital Twins City

田 颖
清华大学建筑学院 博士研究生中规院（北京）规划设计有限公司 规划师

杨 滔
清华大学建筑学院 副教授，博士自然资源部智慧人居环境与空间规划治理技术创新中心 副主任

党安荣
清华大学建筑学院 教授，博士生导师

摘要: 数字孪生概念自被提出以来便不断发展，从在航天器、工业产品、电力等领域的应用到城市学领域，并在各国逐渐上升到国家战略层次。随着相关实践工作推进，数字孪生模型在理论和技术上也不断发展和成熟，随着数字孪生在城市方面认识的深入，实践者和学者们逐渐意识到仅通过数据构建数字孪生城市是不够的，城市本身的复杂特性决定了基于数据的模型建构及其交互机制更为重要。因此，面向可操作性的数字孪生城市建设，应针对有限对象、有限目标、有限能力，从城市中人、财、物等不同方面的需求入手，探索多时间和空间维度的“场景体系”，以场景中的“业务流程决策树”搭建与数据、模型的关系，形成以场景为核心的“数据—模型生态系统”，借助多模态的大模型技术，建构起城市超复杂系统的孪生演进机制。同时，以上海数字孪生城市标识系统、苏州城市信息基础平台（CIM）建设为例，展示“业务流程”与“数据”和“模型”的互动而形成的场景迭代机制探索，展现以场景自主迭代为驱动力的城市发展过程，最终演化为全要素、全周期、全开放的数字孪生城市。

Abstract: The concept of digital twins, since it was proposed, has continued to develop from spacecraft manufacture, industrial products,and electricity to urban science, and gradually rising to the national strategic level in various countries. With the advancement ofrelated practical works, digital twins models are also developing and maturing in both theory and technology. However, due to thein-depth understanding of the digital twins for cities, practitioners and scholars gradually realize that it is not enough to build digitaltwin cities by mining various data, and the complexity of cities gives more weight to the data-based modeling and its interactivemechanism. Therefore, this paper argues that the construction of the operable-oriented digital twins city could start with the different needs—such as people, finances and materials—found in the city, but focus on limited items, limited goals and limited capabilities.In this way, it explores the "scenario system" with multiple temporal-spatial dimensions, builds the relationship with data and models with the "business process decision tree" in the scenarios, forms a "data-model ecosystem" in which the scenarios play a key role, and constructs the twin evolution mechanism of the urban ultra-complex system with the assistance of multi-modal large model technology. At the same time, this paper takes the construction of Shanghai Digital Twins City Identification System and Suzhou City Information Modeling Platform (CIM) as examples to show the exploration of the scenario iteration mechanism formed by the interaction between "business process" and "data-model", forming a city development process driven by independent iteration of scenarios, and finally evolving into an all-item, full-cycle, and fully-open digital twins city.

关键词：数字孪生；决策树；城市信息模型；场景体系

Keyword: digital twins city; decision tree; city information modeling; scenario system

中图分类号：TU984

文献标识码: A

资金资助

国家重点研发计划项目 面向城市治理CIM的理论框架与方法体系研究 2022YFC3800601

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