Seismic stability of single-layer dome structures is closely related to both the external seismic ground motions and structural properties. The physical mechanism of seismic instability of single-layer reticulated dome structures is investigated from the perspective of energy, which can take into account both the external excitations and structural properties. First, the energy balance equation is established and the accuracy for calculating each energy component of structures is verified. Then, the energy-based criterion is introduced as a quantitative index for the identification of seismic stability/instability, where the first-passage of the intrinsic energy over the input energy demonstrates the seismic instability of single-layer reticulated dome structures. Besides, some qualitative indices are also employed to further confirm the judgement by the energy-based criterion. By using the proposed criterion, the critical peak ground acceleration for seismic stability of single-layer reticulated dome structures can be identified by using the incremental dynamic analysis. The energy-based criterion is also validated by comparisons with the B-R criterion. Parametric analyses are implemented to investigate the impacts of different structural parameters on seismic stability and characteristic responses of single-layer dome structures.

单层拱顶结构的地震稳定性与外部地震地震动和结构特性密切相关。从能量的角度研究了单层网状圆顶结构地震不稳定性的物理机制，该机制既要考虑外部激励，又要考虑结构特性。首先，建立了能量平衡方程，并验证了计算结构中每个能量分量的准确性。然后，引入基于能量的标准作为定量指标，以识别地震的稳定性/不稳定性，其中固有能量在输入能量之上的第一次通过证明了单层网状圆顶结构的地震不稳定性。除了，一些定性指标也被用来进一步证实基于能量的标准的判断。通过使用所提出的标准，可以通过使用增量动力分析来识别单层网状圆顶结构的地震稳定性临界峰值地面加速度。还通过与BR准则进行比较来验证基于能量的准则。进行参数分析以研究不同结构参数对单层圆顶结构的地震稳定性和特征响应的影响。通过与BR准则进行比较，也验证了基于能量的准则。进行参数分析以研究不同结构参数对单层圆顶结构的地震稳定性和特征响应的影响。通过与BR准则进行比较，也验证了基于能量的准则。进行参数分析以研究不同结构参数对单层圆顶结构的地震稳定性和特征响应的影响。