Abstract Behavior factor and displacement amplification factor play an important role in the seismic design of structures. In the previous research investigations, no attention has been paid to study these factors for single-layer barrel vaults, and these factors have not been specified for these structures in seismic design codes. Therefore, in this paper, special attention is focused on the determination of the seismic response modification factors for this type of structures. This paper aims to investigate the mentioned factors considering the effect of the parameters of the rise-to-span ratio and the length of the structure. To this end, 15 single-layer barrel vaults with different rise-to-span ratios and different lengths were designed and these factors together with the ductility and over-strength factors were computed and discussed in detail. The results indicate that the seismic response modification factors are dependent on the rise-to-span ratio and are almost small. Finally, by means of the regression analysis implemented on the results extracted, two equations were presented individually in terms of the rise-to-span ratio to obtain the behavior factor and displacement amplification factor for single-layer barrel vault structures. Furthermore, an equation was proposed in terms of the height of the structure to compute the fundamental period of this type of structures. A criterion was presented for the determination of the target displacement at the reference point in the pushover analysis corresponding to the design basis earthquake (DBE) level as well.

中文翻译：

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单层筒形拱顶抗震设计的行为系数和位移放大系数

摘要 行为因子和位移放大因子在结构抗震设计中起着重要作用。在以往的研究调查中，对单层桶形拱顶的这些因素没有进行研究，并且在抗震设计规范中也没有对这些结构进行规定。因此，本文特别关注此类结构的地震响应修正系数的确定。本文的目的是研究考虑到立跨比和结构长度参数的影响的上述因素。为此，设计了15个不同纵跨比和不同长度的单层桶形拱顶，并详细计算和讨论了这些因素以及延性和超强度因素。结果表明，地震响应修正因子依赖于立跨比并且几乎很小。最后，通过对提取的结果进行回归分析，分别根据立跨比提出两个方程，以获得单层桶形拱顶结构的行为因子和位移放大因子。此外，还提出了一个关于结构高度的方程来计算这种结构的基本周期。