Prefabricated Panel House Earthquake Video
Currently, there is no directly available earthquake video of prefabricated panel houses, but their performance in earthquakes can be understood through textual descriptions.
Actual Performance of Prefabricated Panel Houses in Earthquakes
The performance of prefabricated panel houses in earthquakes is often closely related to factors such as earthquake intensity, structural quality of the house, and construction year. Taking the 5.2-magnitude earthquake that occurred in Liuzhou, Guangxi, in the early morning of May 18, 2026, as an example, this earthquake caused the collapse of 13 prefabricated panel houses in the local area. This case indicates that under the action of earthquakes of a certain intensity, prefabricated panel houses have a relatively high risk of collapse. Prefabricated panel houses are usually assembled from prefabricated concrete panels, and their overall structural integrity is relatively weak. The joint connections may loosen or be damaged due to the repeated action of earthquakes, leading to partial or complete collapse of the house.
Limitations of the Seismic Performance of Prefabricated Panel Houses
From a structural perspective, the seismic performance of prefabricated panel houses has certain limitations. On the one hand, the connection methods between prefabricated panels are mostly welding or bolt connections. Under the repeated action of horizontal and vertical forces generated by earthquakes, the connection parts are prone to fatigue damage, resulting in connection failure. On the other hand, the overall stiffness distribution of prefabricated panel houses is uneven. Under the action of seismic waves, the deformation of different parts is uncoordinated, which is prone to stress concentration and accelerates structural damage. In addition, some prefabricated panel houses built in the early days have seismic performances that are even more difficult to meet modern seismic fortification requirements due to low design standards and uneven construction quality.
Measures to Improve the Seismic Capacity of Prefabricated Panel Houses
To enhance the seismic capacity of prefabricated panel houses, a series of reinforcement measures can be taken. For example, strengthen the connection joints between prefabricated panels and adopt more reliable connection methods, such as adding shear keys and improving welding quality. Add seismic supports at key parts of the house to improve the overall stiffness and stability of the structure. Conduct comprehensive inspections and evaluations of old prefabricated panel houses and carry out targeted reinforcement and renovation according to the evaluation results, such as adding structural columns and ring beams. Through these measures, the seismic performance of prefabricated panel houses can be improved to a certain extent, reducing the losses caused by earthquake disasters.
