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An Efficient Method for Considering the Directionality Effect of Earthquakes on Structures

机译：考虑地震对结构方向性效应的一种有效方法

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Recent research have proven the importance of considering the directionality effect on the expected seismic damage of structures. However, it demands a high computational effort if the nonlinear dynamic analysis (NLDA) is used to estimate the seismic response. This paper presents a simplified approach to obtain peak response parameters for a building subjected to bi-directional ground motions considering the directionality effect. To do so, the maximum and median response spectra, considering all the non-redundant response spectra, of several ground motion pairs are calculated. Afterwards, a spectral matching technique is applied to these spectra and new acceleration components are obtained. A series of NLDA are performed with these new components and the roof displacement and base shear values are calculated. These results are compared with the maximum and median values, calculated by performing a series of NLDA, after rotating the earthquakes records by considering increments of 1 degrees in the interval 0 degrees-180 degrees. The results agree with both approaches validating the efficiency of the simplified proposed approach.
机译：最近的研究已经证明了考虑方向性影响结构的抗震损伤的重要性。然而，如果非线性动态分析（NLDA）用于估计地震反应，则需要高计算工作。本文介绍了考虑定向性效应的双向地面运动的建筑物的峰值响应参数的简化方法。为此，计算考虑到所有非冗余响应光谱的最大和中值响应谱进行计算。之后，将频谱匹配技术应用于这些光谱，并且获得了新的加速分量。使用这些新部件进行一系列NLDA，并计算屋顶位移和基部剪切值。这些结果与最大和中值值进行比较，通过执行一系列NLDA，在旋转地震记录之后通过考虑在0度-180度的时间为1度的增量来计算。结果同意验证简化拟议方法效率的两种方法。

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