Seismic performance of prefabricated hollow core slab walls with horizontally connected embedded steel frames

With the advancement of urban prefabricated construction, prefabricated hollow core panel assembled wall structures have achieved widespread attention for their lightweight and high-strength characteristics. However, due to weak horizontal connections, there are still some challenges, such as the complexity of assembling hollow core panel nodes and the instability of seismic performance. To improve the reliability of horizontal node connections in hollow core panel assemblies and meet the seismic performance requirements of prefabricated hollow core panel wall structures, a new method using embedded steel frame horizontal connections is proposed. Through experimental tests, the load-bearing performance of the entire prefabricated hollow core wall is compared with that of horizontally connected embedded steel frame walls. In addition, a comparative analysis is conducted on the seismic performance of assembled wall structures, including changes in concrete strength, axial compression ratio, and number of filling holes. The findings indicate that the horizontal node connection method using prefabricated steel frames can improve the load-bearing capacity of prefabricated hollow core walls. Increasing the concrete strength, selecting an appropriate axial compression ratio, and optimizing the number of grouting holes are beneficial for improving the seismic performance of prefabricated hollow core wall structures.