Seismic Experiment on Prefabricated Panel Houses

The seismic experiment on prefabricated panel houses primarily evaluates their seismic performance by simulating ground motion on a seismic testing platform. Details are as follows:

Experimental Method:
The experiment relies on a seismic testing platform to simulate real ground motion based on nationally specified seismic wave parameters (such as acceleration and frequency). During the test, sensors are used to record dynamic parameters such as acceleration, velocity, and displacement on the platform in real time. These data, combined with the actual response data of the prefabricated panel house, are analyzed to assess its seismic performance.

Evaluation Criteria and Indicators:
According to the "Code for Seismic Design of Buildings" GB50011-2010, the evaluation indicators include:

1. Seismic displacement angle: Reflects the deformation capacity of the structure under seismic action and is a key parameter for measuring overall stability.
2. Seismic capacity indicator: Comprehensively evaluates the matching degree between the structural load-bearing capacity and seismic energy.
3. Period: The difference between the natural vibration period of the structure and the period of the seismic wave affects the risk of resonance, which needs to be verified through experiments for its rationality.
4. Crack control performance: Observes the location, width, and expansion of cracks to determine the degree of structural damage.
5. Displacement limit: Limits the maximum displacement of the structure during an earthquake to ensure safety reserves.

Key Observations in the Experiment:
The seismic test provides dynamic responses of the prefabricated panel house under different seismic waves (such as El-Centro waves and Taft waves). Specific observations include:

• Deformation: Whether the structure exhibits excessive lateral displacement or inter-story displacement angle exceedances.
• Crack development: Whether components such as walls and floors develop through cracks or shear failures.
• Overall stability: Whether joint connections fail or components detach or collapse.

Application of Special Structures:
The prefabricated concrete sandwich panel structural system performs outstandingly in rural housing. Studies confirm that through the composite action of inner and outer concrete panels with an insulating core layer, it significantly enhances seismic performance, flexural and shear capacities, making it particularly suitable for use as wall and floor panels in seismic zones. By optimizing the design of connection joints, such structures can further enhance their integrity and reduce seismic damage.