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首页> 外文期刊>Bulletin of Earthquake Engineering >Understanding the trends in torsional effects in asymmetric-plan buildings
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Understanding the trends in torsional effects in asymmetric-plan buildings

机译：了解不对称建筑中扭转效应的趋势

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This paper studied the reasons behind the four trends in torsional effects in asymmetric-plan buildings observed in the current literature. It was found that the modal eccentricities and the non-proportionality between the modal translations and the modal rotation are key to understanding these trends in torsional effects in asymmetric-plan buildings. These key points were obtained from the three-degree-of-freedom modal systems, which represent the single vibration mode of a two-way asymmetric-plan building. This paper showed that the modal eccentricities, rather than the overall structural eccentricities, are the critical parameters for deciding the trend of the unequal displacement demand on the floor diaphragm. In addition, the non-proportionality between the modal translations and the modal rotation leads to the trend that the torsional effects generally decrease when plastic deformations increase.
机译：本文研究了在当前文献中观察到的非对称平面建筑扭转效应的四个趋势背后的原因。结果发现，模态偏心和模态平移与模态旋转之间的非比例性是理解非对称建筑中扭转效应趋势的关键。这些关键点是从三自由度模态系统获得的，该系统代表了双向非对称计划建筑物的单振动模式。本文表明，模态偏心率而不是整体结构偏心率是决定地板膜片上不等位移需求趋势的关键参数。另外，模态平移与模态旋转之间的非比例性导致了这样一种趋势，即当塑性变形增加时，扭转效应通常会减小。

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