Seismic Response of Friction Damped Braced Frames
Seismic Response of Friction Damped Braced Frames
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发表时间：
1982-06
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影响因子：
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通讯作者：
A. Pall;C. Marsh
中科院分区：
文献类型：
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作者：
A. Pall;C. Marsh
提出了钢框架结构抗震设计的新概念。通过在框架结构的支撑体系中设置滑动摩擦装置，可以大大提高框架结构的抗震能力和控制破坏的潜力。在强烈的地震激励期间，摩擦装置滑动，并且大部分振动能量以机械方式消耗在摩擦中，而不是主要结构部件的非弹性屈服中。非弹性时程动力分析结果表明，与其他结构体系的计算响应相比，摩擦阻尼支撑钢框架具有上级性能。所提出的摩擦装置的作用，在影响，作为安全阀和结构阻尼器。该装置还可以方便地结合在现有的框架建筑物中，以提高其抗震能力。
A new concept of aseismic design for steel framed buildings is proposed. By providing sliding friction devices in the bracing system of the framed buildings, their earthquake resistance and damage control potential can be considerably enhanced. During severe earthquake excitations, the friction device slips and a large portion of the vibrational energy is dissipated mechanically in friction rather than inelastic yielding of the main structural components. Results of inelastic time-history dynamic analysis show superior performance of the friction damped braced steel frames when compared to computed responses of other structural framing systems. The proposed friction devices act, in affect, both as safety valves and structural dampers. The device may also be conveniently incorporated in existing framed buildings to upgrade their earthquake resistance.