Experimental and analytical study on seismic performance of concrete-filled steel tubular column–partially encased composite beam connections

Key Points

• Seismic performance was enhanced through improved design features in concrete-filled steel tubular connections, and analysis indicates stronger connections may reduce failure rates.
• The study shows that partial encasement significantly influences the structural integrity, with connections showing enhanced performance during seismic events in laboratory settings.
• Experimental assessment focused on concrete-filled steel tubular and composite beam interfaces, providing insights into connection behaviors under dynamic loads.
• These findings highlight the necessity for updated codes in structural design to ensure robustness during earthquakes, reinforcing the need for further studies.