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首页> 外文期刊>Journal of Earthquake Engineering >Multi-Mode Response of Shear and Flexural Buildings to Pulse-Type Ground Motions in Near-Field Earthquakes
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Multi-Mode Response of Shear and Flexural Buildings to Pulse-Type Ground Motions in Near-Field Earthquakes

机译：在近场地震中抗剪和抗弯建筑物对脉冲型地震动的多模式响应

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This article presents an investigation of multi-mode effect of tall buildings subjected to near-field pulse-like ground motions. Multi-story buildings are modeled as an equivalent continuum structure consisting of a combination of a flexural cantilever beam and a shear cantilever beam. The simplified model is subjected to near-field ground motions and the representative simplified pulses. The maximum interstory drift spectra and its location along the height are calculated on the basis of modal summation approach. So, the method is largely based upon the assumption of linearity of the system. The effects of shear to flexural deformation ratio, structural to input pulse period ratio, and the velocity pulse shape on the structural response are discussed. The applicability of first-mode estimation is also investigated. In the end, it is shown that the response of structures to near-field pulse-like ground motions can be predicted by the structural response to the simple velocity pulses.
机译：本文介绍了高层建筑在近场脉冲状地震动作用下的多模态效应研究。多层建筑被建模为等效的连续结构，该结构由弯曲悬臂梁和剪切悬臂梁组成。简化模型要经受近场地面运动和代表性的简化脉冲。在模态求和方法的基础上，计算了最大的层间漂移谱及其沿高度的位置。因此，该方法主要基于系统线性的假设。讨论了剪切与挠曲变形比，结构与输入脉冲周期比以及速度脉冲形状对结构响应的影响。还研究了第一模式估计的适用性。最后，表明可以通过对简单速度脉冲的结构响应来预测结构对近场脉冲状地震动的响应。

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