Tuned liquid wall damper for multi-hazard mitigation

Abstract

Safety and serviceability are critical objectives in design of civil infrastructure, including buildings and energy, lifeline, communication, and transportation systems. Recent structures tend to be more flexible as a result of advances in material science and construction techniques, making them vulnerable to hazard loadings, and the design has shifted to serviceability. One challenge for current structural design is to meet the motion requirement under operational and extreme loadings. A typical approach for this motion-related design problem is a motion-based design that considers the satisfaction of the motion requirement as the primary objective and views strength requirement as a constraint. Motion-based design employs structural control techniques, including appropriately size structural stiffness and supplemental damping. Supplemental damping devices, including passive, semi-active, and active systems, were introduced over the last several decades showing the effectiveness at reducing excessive vibrations.However, these devices have shown several challenges: 1) passive systems are restricted to single