City-scale disaster simulation and resilience assessment: From physics-based to AI methods ABSTRACT: "Resilient city" and "smart city" have emerged as the development directions of urban disaster prevention. As a result, it's critical to use physics-based models to investigate the mechanisms of urban disaster and resilience evolution, as well as to continue developing AI-driven urban disaster simulation and resilience assessment methods.

This presentation will first introduce the nonlinear time history analysis at the building and city scales against earthquake disasters. The lecturer will then present a physics-based multi-hazard simulation framework based on the city information model (CIM) to assess the resilience of the community in the face of multiple hazards (i.e., earthquake, fire, wind, and COVID-19 disasters). Because the developed physics-based models do not rely entirely on historical disaster data, they can be applied to a wide range of communities. The database, which is powered by CIM, standardizes the data format required by simulations for various hazards and scales, improving simulation efficiency. Furthermore, the potential of AI in provid-ing a competitive advantage over traditional disaster simulation methods is investigated. AI-driven urban disaster simula-tion and assessment methods, in particular, are being developed to facilitate intelligent data acquisition, model establish-ment, vibration identification, and damage prediction. The proposed AI models can significantly improve modeling and computing efficiencies by learning and illustrating characteristics of the disaster evolution process

BIO: Prof. Lu got his BS and Ph.D. degrees from Tsinghua University of China. Now he is a full professor and the Head of the Institute of Disaster Prevention and Mitigation of the Department of Civil Engineering at Tsinghua University. He is also the Editor-in-Chief of Engineering Mechanics journal of China Society of Theoretical and Applied Mechanics, Associate Editor of Journal of Structural Engineering-ASCE, and a member of the editorial boards of Earthquake Engineering & Structural Dynamics and Journal of Earthquake Engineering.  Prof. Lu’s major research interests cover disaster prevention and mitiga-tion of civil engineering. He has been listed as one of the “most cited Chinese researchers from 2014-2021” by Elsevier. Many of his research findings have been adopted by ACI guidelines, Chinese national and industrial design codes, import-ant simulation platforms such as OpenSees and US-NSF NHERI SimCenter, and landmark buildings such as CITIC Tower (528 m), Beijing. He has received several important awards, including the Second Class National Natural Science Award, the First-Class Natural Science Award of the Ministry of Education of China, the Distinguished Professor of the Chang Jiang Scholars Program of the Ministry of Education of China, the XPLORER PRIZE of the Tencent Foundation, and the Excellent Young Scientist Fund of the National Natural Science Foundation of China.

CIRCLE: The Center for Infrastructure Resilience in Cities as Livable Environments is one of three research themes support-ed by the joint Dynamic Research Enterprise for Multidisciplinary Engineering Sciences (DREMES), established between the University of Illinois at Urbana-Champaign (UIUC) and Zhejiang University (ZJU). The CIRCLE Distinguished Lecture Series is intended to provide opportunities for faculty and students to meet and interact with internationally renowned experts in the field.