Causes, Risk Analysis, and Countermeasures of Urban Road Collapse in China from 2019 to 2020
Publication: Journal of Performance of Constructed Facilities
Volume 36, Issue 6
Abstract
Urban road collapse seriously threatens people’s lives and property. In recent years, with the accelerating pace of urbanization in China, the number of road collapse accidents (RCAs) has been increasing. Based on 334 RCAs in China’s inland cities from 2019 to 2020, this paper divided the severity of urban road collapse into five grades and analyzed the causes, risks, and countermeasures of urban road collapse. The results indicated that causes of RCAs include rainfall, underground pipe problems, construction in progress, geological environment, road aging, road overload, and unqualified backfilling. Rainfall and underground pipe problems cause 75% of RCAs, and the risk of RCAs caused by underground pipe problems is the greatest. Its calculated value is 6.13, which is 3.2 times that of construction in progress and 22 times that of unqualified backfilling. Construction in progress and geological environment problems are more likely to lead to RCAs with higher severity. Underground pipe problems, rainfall, construction in progress, and geological environmental problems are all more likely to cause RCAs in summer, resulting in 45.9% of RCAs occurring in summer. The risk of RCAs in June is the highest, and its calculated value is 1.5 times that in September and 25 times that in February. According to the calculated values and geographical location factors, China was divided into five regions. Finally, the countermeasures before and after road collapse were introduced.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
This work was jointly supported by the Project Program of National Nature Science Foundation of China (51908061), the Project of China Railway First Survey and Design Institute Group Co., Ltd. [2021KY34ZD(XJJ)-02], the Project on Social Development of Shaanxi Provincial Science and Technology Department (No. 2021SF-474), Key Laboratory of Urban Underground Engineering of Ministry of Education (TUL2020-01), and the Construction Science and Technology Project of Xi’an (No. SZJJ2019–23). We also acknowledge the editors for their valuable suggestions.
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Information & Authors
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Published In
Journal of Performance of Constructed Facilities
Volume 36 • Issue 6 • December 2022
Copyright
© 2022 American Society of Civil Engineers.
History
Received: Mar 5, 2022
Accepted: Jun 15, 2022
Published online: Sep 7, 2022
Published in print: Dec 1, 2022
Discussion open until: Feb 7, 2023
ASCE Technical Topics:
- Buried pipes
- Climates
- Construction engineering
- Disaster risk management
- Environmental engineering
- Geology
- Geotechnical engineering
- Highway and road management
- Highway transportation
- Highways and roads
- Infrastructure
- Meteorology
- Pipeline systems
- Pipes
- Precipitation
- Rainfall
- Risk management
- Special condition construction
- Transportation engineering
- Underground construction
- Urban and regional development
- Urban areas
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