Collapse of Prefabricated Panel Houses

There are multiple real-world cases of the collapse of prefabricated panel houses, with diverse causes and varying degrees of severity in the consequences.

Specific Cases

• Prefabricated Floor Collapse in a Hubei House: In Hubei, the prefabricated floor in a house collapsed due to waterlogging, causing four people to fall into nearly 2-meter-deep basement water. Fortunately, they were rescued in time and were uninjured. This case indicates that waterlogging can damage the structure of prefabricated panels, reducing their load-bearing capacity and leading to collapse accidents.
• Collapse of an Old Prefabricated Panel and Brick-Concrete Structure Building in Shijiazhuang: On the early morning of August 19, 2026, the third and fourth floors of a four-story old prefabricated panel and brick-concrete structure building built in the 1980s in the Railway 55 Dormitory, Xinhua District, Shijiazhuang, suddenly collapsed, resulting in three fatalities. Initial investigations suspect a gas leak triggered an explosion, but the building itself had poor integrity and weak earthquake resistance, and the floor panels had not undergone substantial renovation during the 2020 urban renewal project. This shows that prefabricated panel houses are prone to collapse when subjected to external forces if their structures are aged and have poor integrity.
• Dangerous House Renovation Collapse Accident in Banan District, Chongqing: On May 22, 2024, a dangerous house in Dongwenquan Town, Banan District, Chongqing, collapsed during the process of chiseling and cleaning the cushion layer of the prefabricated panel floor on the second floor during renovation, resulting in one death and three injuries. The direct cause of the accident was improper demolition sequence, and the indirect cause was the inadequate implementation of the enterprise's main responsibility for work safety. This reflects that non-standard operations and management loopholes during construction can trigger the collapse of prefabricated panel houses.

Conclusion

The collapse of prefabricated panel houses can be caused by multiple factors, including waterlogging, structural aging, poor integrity, weak earthquake resistance, and non-standard construction. These collapse accidents not only cause damage to houses but also pose a threat to human life safety. Therefore, for prefabricated panel houses, daily maintenance and inspections should be strengthened to promptly identify and address potential safety hazards. During renovation or demolition operations, relevant norms and operational procedures should be strictly followed to ensure construction safety.