Hysteretic dampers for earthquake‐resistant structures
Hysteretic dampers for earthquake‐resistant structures
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DOI：
10.1002/eqe.4290030307
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发表时间：
1974
影响因子：
4.5
通讯作者：
R. Skinner;J. Kelly;A. Heine
中科院分区：
文献类型：
--
作者：
R. Skinner;J. Kelly;A. Heine
许多结构的抗震性能可以通过加入特殊的元件来提高，这些元件起到滞回阻尼器的作用。在中等强度地震期间，这些阻尼器充当刚性构件，其减少结构变形，而在非常严重的地震期间，阻尼器充当能量吸收器，其限制结构变形和力的准共振积累。滞后阻尼器不需要承受主要的结构载荷，因此可以针对其所需的刚度和能量吸收特征进行优化。另一方面，主要结构部件不再需要大的能量吸收能力，因此它们可以针对其所需的刚度和承载特征进行优化。对于许多结构来说，这种部件功能的分离将导致以较低的初始成本提高可靠性。在地震作用下，应尽量减少结构的破坏。在中等强度的地震中，非结构性破坏应该较低，对于某些类型的结构，在非常严重的地震中也应该较低。简要讨论了滞回阻尼器在结构中应用的各种方式。介绍了几种适用于结构的高性能、低成本滞回阻尼器的研制情况。阻尼器利用实心钢梁，在扭转、弯曲和剪切变形的各种组合中塑性变形。
The earthquake resistance of many structures can be increased by the inclusion of special components which act as hysteretic dampers. During moderately severe earthquakes these dampers act as stiff members which reduce structural deformations, while during very severe earthquakes the dampers act as energy absorbers which limit the quasi-resonant build-up of structural deformations and forces. The hysteretic dampers are not required to withstand the main structural loads, and may therefore be optimized for their required stiffness and energy-absorbing features. On the other hand, the main structural components no longer require large energy-absorbing capacities and they may therefore be optimized for their required stiffnesses and load-bearing features. For many structures this separation of component functions should lead to increased reliability at a lower initial cost. Under earthquake attack structural damage should be reduced. Non-structural damage should be lower during moderately severe earthquakes, and for certain types of structure it should also be lower for very severe earthquakes. Various ways in which hysteretic dampers may be utilized in structures are discussed briefly. The development of several types of high-capacity, low-cost hysteretic damper, suitable for use in structures, is described. The dampers utilize solid steel beams deformed plastically in various combinations of torsional, flexural and shear deformations.