A Design Methodology for Hysteretic Dampers in Buildings under Extreme Earthquakes .............. a Chairman, Departmental Committee on Gradtiate Students Jun 0 7 2004 a Design Methodology for Hysteretic Dampers in Buildings under Extreme Earthquakes

This research proposes a design methodology for hysteretic dampers in buildings under high levels of seismic hazard. Developments in structural materials have led to designs that satisfy strength requirements but are often very flexible. This trend, along with increasingly stringent building performance criteria, suggests a philosophy of controlling structural motion as opposed to merely designing for strength, particularly when related to earthquake design. Included in this thesis is a design algorithm that calibrates stiffness and yield force level, two controlling parameters in the implementation of hysteretic dampers, in order to obtain optimal structural response under two levels of earthquake severity. In addition, a parametric study illustrates the merits and drawbacks of various stiffness and yield force allocations.

本研究提出了一种在高地震危险水平下建筑物中滞回阻尼器的设计方法。结构材料的发展使得设计能够满足强度要求，但往往具有很高的柔性。这种趋势，以及日益严格的建筑性能标准，表明了一种控制结构运动的理念，而不仅仅是针对强度进行设计，特别是在与抗震设计相关时。本论文包含一种设计算法，该算法校准刚度和屈服力水平（这是滞回阻尼器应用中的两个控制参数），以便在两种地震强度水平下获得最佳的结构响应。此外，一项参数研究阐明了各种刚度和屈服力分配的优缺点。