平面不规则结构非弹性扭转地震反应研究进展

不规则建筑结构在侧向地震荷载作用下由于质量中心和刚度中心的不重合导致平扭耦联反应的发生,使得结构构件的变形需求分布在结构平面内并不一致,从而产生附加的强度和变形需求。尽管不规则建筑结构在地震作用下的扭转问题一直受到研究学者的关注和研究,并取得了很多显著的成果,但仍然存在着一些争议,有待于继续深入研究。本文从结构的分析模型、影响参数及地震动输入等方面回顾总结了平面不规则建筑结构在地震作用下非弹性扭转的研究进展,结合当前的研究工作指出今后研究的发展方向。

Progress in study on inelastic torsional seimic response of asymmetric buildings

The deformation and strength demands in resistant elements of asymmetric buildings are not uniformly dis-tributed due to the inconsistency of the center of mass and the center of rigidity, which results in additional drift and strength demands in critical resistant elements and even damage to buildings. Although extensive researches on the inelastic torsional effect have been conducted, there still exist some aspects on the issue which are essential to un-derstanding and solution of the response of asymmetric buildings. Factors influencing the inelastic torsional effect of asymmetric buildings, such as analytical model, structural properties and ground motion properties are presented and summarized on the basis of a large numbers of research articles and the present work as well as the future work is pointed out, so as to get the further understanding of the inelastic torsional response.