Semiactive Structural Control of a Nonlinear Building Model: Considering Reliability

The reliability of the semiactive controlled SAC Los Angeles 3-story structure is examined accounting for the variability of the seismic excitation. An evaluation model is developed, a semiactive control strategy proposed, and results on the improved reliability of the structural performance presented. The semiactive control strategy is able to reduce the maximum damage measures as compared to the uncontrolled system. The median and dispersion of the damage measures are similarly reduced for the semiactive controlled structure. The reliability of the semiactive controlled structure is increased with respect to the uncontrolled structure. Considering the reliability provides a useful perspective on the overall performance of a semiactive control strategy.