Experimental and numerical study of the innovative dual slope structural fuse with self-buckling mechanism

Experimental and numerical study of the innovative dual slope structural fuse with self-buckling mechanism

Conventional seismic design, while effective in preventing collapse, often results in high post-earthquake repair costs. This study proposes a novel Dual-Slope (DS) structural fuse to address this issue. The DS fuse utilizes opposing inclineslotted infill plates, ensuring consistent stiffness and superior energy dissipation during earthquakes. This innovative design also offers self-buckling restraint through interaction between the plates, eliminating the need for additional components. This simplification not only reduces construction complexity but also decreases weight and cost compared to traditional metallic yielding fuses. The effectiveness of the DS fuse was confirmed through experimental tests and finite element (FE) analysis, demonstrating stable behavior and efficient energy dissipation. Numerical models validated against experimental data enabled comprehensive parametric studies to explore the effects of key design parameters on performance. Furthermore, FE analysis led to the development of a relationship for estimating the load-bearing capacity of the DS fuse based on key parameters for specific DS structural fuse (240 MPa yield stress, and 3 mm thickness). This research highlights the DS structural fuse as a promising advancement in passive control technologies, paving the way for enhanced seismic resilience and significant reductions in postearthquake damage.

Conventional seismic design, while effective in preventing collapse, often results in high post-earthquake repair costs. This study proposes a novel Dual-Slope (DS) structural fuse to address this issue. The DS fuse utilizes opposing inclineslotted infill plates, ensuring consistent stiffness and superior energy dissipation during earthquakes. This innovative design also offers self-buckling restraint through interaction between the plates, eliminating the need for additional components. This simplification not only reduces construction complexity but also decreases weight and cost compared to traditional metallic yielding fuses. The effectiveness of the DS fuse was confirmed through experimental tests and finite element (FE) analysis, demonstrating stable behavior and efficient energy dissipation. Numerical models validated against experimental data enabled comprehensive parametric studies to explore the effects of key design parameters on performance. Furthermore, FE analysis led to the development of a relationship for estimating the load-bearing capacity of the DS fuse based on key parameters for specific DS structural fuse (240 MPa yield stress, and 3 mm thickness). This research highlights the DS structural fuse as a promising advancement in passive control technologies, paving the way for enhanced seismic resilience and significant reductions in postearthquake damage.