Seismic Design of Energy Dissipation Systems for Optimal Structural Performance

文摘：摩擦阻尼器、屈服金属阻尼器、粘弹性阻尼器和粘性流体阻尼器等耗能装置现已成为既有结构改造或新结构设计的抗震体系。设计这些系统以使其以最佳方式实现特定性能目标的方法远远落后于硬件开发。这项研究将开发一种方法，用于优化布置和设计几种常用的消能系统，以实现特定的结构性能目标。由于这些设备有它们自己的属性和限制，因此将考虑两个或更多不同类型的设备的最佳组合，以从它们中提取最佳性能。对于最优搜索，将使用基于遗传算法的程序。这项研究将考虑几个基本的和更全面的绩效目标。这一研究成果将为建筑结构消能系统的优化设计提供一种实用的方法。它将促进和加速使用这些有效的系统来设计更安全和经济的建筑结构。

ABSTRACT: Several energy dissipation devices such as friction dampers, yielding metallic dampers, viscoelastic dampers, and viscous fluid dampers are now available as seismic protective systems for retrofitting existing structures or for the design of new structures. Methods to design these systems such that they optimally achieve certain performance objectives are lagging far behind their hardware development. This research will develop a methodology for optimal placement and design of several commonly available energy dissipation systems to achieve certain structural performance objectives. Since these devices have their own attributes and limitations, optimal combination of two or more different types of devices will be considered to extract the best performance from them. For optimal search, the genetic algorithm-based procedures will be used. The research will consider several basic, as well as more comprehensive, performance objectives. The outcome of this research will be a practical methodology for optimal design of energy dissipating systems for building structures. It will facilitate and accelerate the use of these effective systems to design more safe and economical building structures.