MULTI-OBJECTIVE EVOLUTIONARY OPTIMIZATION OF PASSIVE ENERGY DISSIPATION SYSTEMS UNDER SEISMIC LOADING
With the conceptual development of performance-based design, the earthquake engineering community has begun to recognize the importance of controlling both interstory drifts and absolute floor accelerations.However, these often present conflicting requirements for design. In this paper, we present a multi-objective genetic algorithm to address this conflict by identifying a Pareto front of optimal solutions. This provides decision makers with the information needed to understand the tradeoffs between the two objectives of minimizing drift and acceleration. Furthermore, the multi-objective approach allows broad comparisons between different types of structural response control strategies and devices. Here we focus on several passive energy dissipation systems, with particular emphasis on nonlinear viscous fluid dampers. In addition to presenting the overall multi-objective framework, we consider an example of a five story steel building and evolve some interesting Pareto front structural designs.
Passive energy dissipation systems Performance-based seismic design Non-structural components Structural optimization Genetic algorithms Pareto front
O. Lavan G.F. Dargush A.M. Reinhorn
Faculty of Civil and Environmental Engineering , Technion Israel Institute of Technology,Haifa, Isra Dept. Of Mechanical and Aerospace Engineering , University at Buffalo, Buffalo, NY, USA Dept. Of Civil, Structural and Environmental Engineering , University at Buffalo, Buffalo, NY, USA
国际会议
14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)
北京
英文
2008-10-12（万方平台首次上网日期，不代表论文的发表时间）