韧性城市视角下震后城市结构异化与人口短时再分布

Alienation of Urban Structure and Short-term Population Redistribution After Earthquakes from Perspective of Resilient Cities

摘要:

在对典型灾害考察的基础之上，基于韧性城市视角，揭示了震后城市结构异化这一现象。基于城市恢复的基本过程，提出了城市系统社会影响因子这一关键指标，进行了地震工程科学与社会科学的交叉耦合研究，从而进一步修正了城市系统韧性度量的评价方式。最后，以Agent模型为基础，量化研究了对于决定城市系统社会影响因子这一指标的人口再分布问题，通过定量的方式研究了防灾教育、地震烈度和震后人群信息沟通效率对人口短时再分布的影响。

关键词:韧性城市;地震;城市结构;人口分布;Agent模型

Abstract:

Based on the investigation of typical earthquake disasters， this paper reveals the phenomenon of post-earthquake urban structure alienation from the perspective of resilient cities. Based on the basic process of urban restoration， a key indicator named the social impact factor of urban systems is proposed， which couples engineering science with social science and further revises the function evaluation for the urban system resilience. Finally， based on the Agent model， this paper quantitatively studies the population redistribution for determining the social impact factor of urban systems， and quantitatively studies the influence of disaster prevention education， earthquake intensity， and post-earthquake crowd information communication efficiency on the short-term population redistribution.

Key words:resilient city;earthquake;urban structure;population distribution;Agent Model