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首页> 外文期刊>Bulletin of earthquake engineering >Direct damage controlled seismic design of plane steel degrading frames
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Direct damage controlled seismic design of plane steel degrading frames

机译：平面钢降解框架的直接损伤控制抗震设计

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A new method for seismic design of plane steel moment resisting framed structures is developed. This method is able to control damage at all levels of performance in a direct manner. More specifically, the method: (a) can determine damage in any member or the whole of a designed structure under any given seismic load, (b) can dimension a structure for a given seismic load and desired level of damage and (c) can determine the maximum seismic load a designed structure can sustain in order to exhibit a desired level of damage. In order to accomplish these things, an appropriate seismic damage index is used that takes into account the interaction between axial force and bending moment at a section, strength and stiffness degradation as well as low cycle fatigue. Then, damage scales are constructed on the basis of extensive parametric studies involving a large number of frames exhibiting cyclic strength and stiffness degradation and a large number of seismic motions and using the above damage index for damage determination. Some numerical examples are presented to illustrate the proposed method and demonstrate its advantages against other methods of seismic design.
机译：提出了一种抗弯矩钢框架结构抗震设计的新方法。此方法能够直接控制所有性能级别的损坏。更具体地说，该方法：（a）可以确定在任何给定地震载荷下设计构件的任何构件或整体的损坏;（b）可以确定给定地震载荷和所需破坏水平的结构尺寸;（c）可以确定设计结构可以承受的最大地震载荷，以表现出所需的破坏水平。为了完成这些任务，使用了适当的地震破坏指数，该指数考虑了截面上的轴向力和弯矩之间的相互作用，强度和刚度下降以及低周疲劳。然后，在广泛的参数研究的基础上构建损伤等级，该研究涉及显示循环强度和刚度下降以及大量地震运动的大量框架，并使用上述损伤指数来确定损伤。给出了一些数值算例，以说明所提出的方法并证明其相对于其他抗震设计方法的优势。

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