文章摘要

文章信息/Info

作者:: 何超¹; 罗奇峰²; 洪钟³; (1.同济大学结构工程与防灾研究所,上海 200092; 2.同济大学上海防灾救灾研究所,上海 200092; 3.国核工程有限公司,上海 200092)

Author(s):: HE Chao¹; LUO Qi-feng²; HONG Zhong³; (1.Research Institution of Structural Engineering and Disaster Reduction,Tongji University,Shanghai 200092,China)(2.Shanghai Institution of Disaster Prevention and Relief,Tongji University,Shanghai 20092,China)(3.National Nuclear Engineering Limited Company,Shanghai 20092,China)

Keywords:: seismic motion; rotational components; numerical simulation method

摘要:: 列举了多次地震中的地震动转动现象,概括了国内外对地震动转动分量的产生、传播、合成方法及其对结构的作用等方面的研究成果。还介绍了由地震动平动分量计算转动分量的弹性波动方法,并讨论了其局限性; 还介绍了欧洲规范对转动分量的部分规定,指出有必要在结构抗震设计中考虑转动分量的作用。此外,在转动分量的产生、对结构的作用及数值模拟方面还做了一些假设与解释。

Abstract:: An intuitionistic description of the seismic rotational phenomena is listed firstly,and then the research results both at home and abroad in several fields are summarized,such as the generation,propagation of the seismic rotational components and its effects on structure.The elastic wave method used to calculate the rotational components through translational components is introduced and its limitation is discussed.Some parts of rules of Eurocodes about rotational components are referred and the necessity of adding the seismic rotational effects in the design of structures for earthquake resistance is pointed out.Further,some hypotheses and explanations in rotational component's generation,effects on structure,and structure's numerical simulation are proposed.