Life‐cycle cost optimization of wind‐excited tall buildings using surrogate models

Summary As buildings become taller and slender, they more sensitive to wind‐induced vibrations. Commonly used solutions mitigate vibrations are structural system modifications integration of supplemental damping devices. This paper presents a procedure optimize the device configuration with goal reducing The performance building is expressed in terms life‐cycle cost (LCC), allowing consider not only initial costs associated vibration mitigation but also lifetime savings due suppression. proposed employs set Kriging surrogate models analyze large number different properties/damping characteristics. combination that minimizes LCC taken as optimal configuration. demonstrated on wind‐sensitive 39‐story equipped passive dampers. Results accuracy depends input variables considered, an average root mean square error 2.5% for floors without dampers 5% devices, respectively. It was stiffness–damping depend assumed modifications.