结构动力可靠性理论在建筑结构,特别是复杂的大跨空间结构及高层建筑结构的抗震、抗风等领域中有着重要作用.结构随机反应分析、结构破坏界限或失效准则的确定、结构动力响应可靠概率的计算方法是结构动力可靠性分析的三大关键问题.结合近年来的研究进展,本文归纳总结了解决上述问题的研究发展历程,其中重点阐述了研究最多的基于首次超越破坏机制的结构动力可靠性研究的发展与现状.最后提出了该研究领域今后发展方向的展望,以便为结构动力可靠性理论的进一步理论研究及其工程应用提供有益的参考.
Structural dynamic reliability theory plays an important role in the field of earthquake-resistance and structural wind-resistant of building structure,especially complex large span structure and tall building structure.Key problems in structural dynamic reliability analysis are the structural random response analysis,the structural failure bound or failure criterion and the reliability probability calculation of structural dynamic response.Combining research progress in recent years,research development of those problems is generalized in this paper.Detailed description is made on the development and existing states of structural dynamic reliability based on the first excursion mechanism which most attention has been paid on.Finally the development perspectives of this research field is put forward in order to provide useful reference for further study and application of structural dynamic reliability theory.