Innovative Seismic Solutions for Precast Structures: Experimental and Numerical Studies on Beam-Column Joints

Area of Science:

• Structural Engineering
• Seismic Design
• Materials Science

Background:

• Traditional precast systems often rely on pendulum-based seismic isolation, which can be costly and complex.
• Existing seismic solutions may compromise long-term reparability for construction speed and initial cost-efficiency.

Purpose of the Study:

• To present a novel structural framing solution for precast construction that enhances seismic energy dissipation and limits displacements.
• To offer a practical and economically viable alternative to conventional seismic isolation systems.

Main Methods:

• Developed a system integrating seismic performance enhancements within the structural frame using pinned and semi-rigid beam-to-column joints.
• Conducted experimental testing and numerical simulations to analyze the cyclic response of the connections.
• Focused on understanding energy dissipation and damage progression under dynamic loading.

Main Results:

• The novel connections demonstrate robust hysteretic behavior and deformation control under dynamic loading.
• The system effectively dissipates seismic energy and delays damage progression.
• Experimental and numerical results validate the proposed framing solution's performance.

Conclusions:

• The proposed structural framing solution is a promising and economically viable option for seismic applications in precast construction.
• It enhances post-earthquake functionality and reduces downtime, aligning with performance-based design trends.
• This advancement improves the structural reliability of dry-assembled systems in seismic regions without compromising construction practicality.