The ASCE Forensic Engineering Division (FED) traditionally selects a paper published in this journal during the previous calendar year for our Outstanding Paper Award. For 2021, the Journal Editorial Board selected the paper “Catastrophic Failure of Shanghai Metro Line 4 in July, 2003: Occurrence, Emergency Response, and Disaster Relief,” by Yong Tan, Ye Lu, and Dalong Wang. The paper was published online October 23, 2020, and in print in the January issue.According to the paper’s abstract, “The failure of Shanghai Metro Line 4 in 2003 was one of the most striking accidents in the history of subway construction in China. It involved the first breach failure of a cross passage being mined by an artificial ground-freezing method, followed by a massive ingress of water and soil, dramatic ground subsidence, rapid sinking of existing structures, failure of the adjacent dike and floodwall along the Huang-Pu River, flooding of the site, and collapse of buildings and metro tunnels. The accident directly resulted from the failure of the cross passage being excavated within a confined aquifer. In the beginning, artesian water broke the frozen mass; then, water and soil gushed into the cross passage and metro tunnels. As a result of massive ground loss, the ground level underwent significant subsidence up to 4 m, and those preexisting structures were damaged. Inherently, this event was a typical project management failure, associated with a number of procedural and ethical blunders. To rebuild the destructive failure case, this paper outlines the design and construction for the cross passage along with the geological conditions, describes those preceding events incurring the failure, depicts the catastrophic scene, and introduces the postfailure emergency responses and disaster-relief measures. Finally, technical, procedural, and ethical factors leading to the failure are summarized.”The editorial board would like to encourage you to read the full paper.Yong Tan, Ph.D., M.ASCEDr. Yong Tan (Fig. 1) is a full professor of the Department of Geotechnical Engineering, College of Civil Engineering, Tongji University in Shanghai, China. He received his B.Eng. in building engineering from Tongji University (1999), M.Eng. in Geotechnical Engineering from Tongji University (2002), and Ph.D. in civil engineering from the University of Massachusetts (2005). Subsequent to his doctoral research, he joined Terracon Consultants, Inc., in Savannah, Georgia, as Staff Geotechnical Engineer and later was promoted to Project Engineer. In June of 2009, Dr. Tan joined Tongji University as Lecturer and then was promoted to Associate Professor in December 2011 and Full Professor in December 2016. He had been a visiting scholar at the Department of Structural Engineering, University of California, San Diego, during 2015–2016. Dr. Tan’s areas of specialization include deep excavation and tunnelling, foundation engineering, forensic geotechnical engineering, and engineering failures associated with climate change. His research has been supported by both state agencies and local industrial companies. Within the past 20 years, the key research and consulting projects that he has been involved in included the relocation of US Route 44 in Massachusetts, expansion of both the Port of Savannah and the Southern Elba Island Liquefied Natural Gas (LNG) Terminal in Georgia, construction of metro lines in both Shanghai and Nantong, deep excavations for the mega basements of several landmark buildings in Shanghai, and forensic investigations on several civil engineering failures in China.To date, Dr. Tan has already published over 50 technical papers in leading professional journals, of which eight were top 1% highly cited papers and two were top 0.1% hot papers as measured by essential science indicators (ESI). He was recognized by Elsevier as one of the most cited Chinese researchers in civil engineering (2020) and in geological resources and geological engineering (2021). Dr. Tan is the recipient of the prestigious Outstanding Journal Paper Award of 2014 from the Journal of Performance of Constructed Facilities for his integrated research on spatial corner stiffening behaviors of subway excavations in Shanghai soft clay. He is a reviewer of more than 80 international journals and was awarded the 2021 ASCE Outstanding Reviewer by the Journal of Geotechnical and Geoenvironmental Engineering. Dr. Tan is an active member in several professional societies, including ASCE, Deep Foundation Institute, Associated Research Centers for the Urban Underground Space, Underground Space Committee of Chinese Society of Rock Mechanics and Engineering, and the Tunnel and Underground Engineering Committee of the Chinese Society of Civil Engineers (CSCE).Ye Lu, Ph.D., A.M.ASCEDr. Ye Lu (Fig. 2) is an associate professor of the Department of Civil Engineering at Shanghai University in Shanghai, China. She holds a B.Eng. in building engineering from Tongji University (2001), a M.S. in civil engineering from the University of Massachusetts (2005), and a Ph.D. in geotechnical engineering from the Georgia Institute of Technology (2010). Dr. Lu joined Shanghai University in 2011 as Lecturer and then was promoted to Associate Professor in 2014.Her main research interests include deep excavations, pile foundations, slope stability analysis, microstructure of engineering materials, fluid–solid coupling numerical simulation, and image analysis. Dr. Lu has already published over 30 technical papers in international journals. She is a reviewer of over 10 international journals and supervisor of more than 20 graduate students in geotechnical engineering. In addition, Dr. Lu is a member of ASCE.Dalong Wang, P.E.Mr. Dalong Wang (Fig. 3) is currently a senior engineer and General Manager of the Engineering Instrumentation and Monitoring Company affiliated with Shanghai Geotechnical Investigation and Design Institute Engineering Consulting (Group) Co., Ltd., in Shanghai, China.He is a licensed professional geotechnical engineering and has over 20 years of working experience in field instrumentation, monitoring, and management of underground engineering projects. He has been in charge of numerous civil engineering projects in China, e.g., Rehabilitation of the Collapsed Shanghai Metro Line 4, Shanghai Bund Underground Passage, Shanghai World Financial Centre, Shanghai Tower, Shanghai International Financial Centre, Shanghai Deep Drainage and Storage Pipeline System Project underneath Suzhou River, and Qingdao Metro Line 2. He has received several awards, including the Shanghai Excellent Engineering Survey Award. Mr. Wang received his B.Eng. in geology and M.Eng. in geotechnical engineering from Tongji University in 1999 and 2002, respectively.The editorial board also selected as an honorable mention the paper “Protecting the Historic Buildings of Mexico: The Barrel Vault of San Agustin Church in Morelia,” by Leslie E. Alejo, Nuno Mendes, Paulo B. Lourenço, and Guillermo Martínez, which was published in the April 2021 issue.

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