吉林建筑大学学报

建筑抗震设计规范的持续完善显著提升了建筑主体结构的抗震性能，但非结构构件的抗震问题尚未得到充分重视，尤其在空间结构中存在研究空白。该研究旨在分析带下部支承结构的四边支承网架的动力性能，并评估GB 50011—2010《建筑抗震设计标准》（2024）对网架内非结构构件抗震设计的适用性。通过建立有限元模型进行动力时程分析，研究提出了智能识别节点动力响应的方法，系统揭示了跨度、支承方式、长宽比和坡度等参数对非结构构件地震荷载的影响规律。结果表明，该类网架中非结构构件所受地震荷载可能超出中国规范设计值，表明现行规范适用性不足；上弦支承网架的节点最大水平加速度响应均值高于下弦支承网架；节点水平加速度随跨度增大而降低，随坡度增大而升高；最大竖向加速度响应均值则随长宽比增加而显著增大。基于上述规律，研究结合智能建造理念构建了沈阳南站中央屋盖的数字孪生模型，评估了其非结构构件地震荷载，并提出了针对性的智能抗震策略。

The continuous improvement of the seismic design code for buildings has significantly enhanced the seismic performance of the main building structure. However, the seismic issues of non structural components have not received sufficient attention, especially in the research on spatial structures, where there are gaps. This study aims to analyze the dynamic performance of four-sided supported space grids with lower supporting structures and evaluate the applicability of GB 50010—2010 Code for seismic design of buildings(2024) for the seismic design of non-structural components in space grids. Through the establishment of a finite element model for dynamic time-history analysis, the study proposes a method for intelligently identifying the dynamic responses of nodes, and systematically reveals the influence laws of parameters such as span, support mode, length-to-width ratio, and slope on the seismic loads of non-structural components. The results show that the seismic loads on non-structural components in this type of space grid may exceed the design values in the Chinese code, indicating the insufficient applicability of the current code. The mean value of the maximum horizontal acceleration respones of nodes in the upper-chord supported space grid is higher than that in the lowerchord supported one. The horizontal acceleration of nodes decreases with the increase of span and increases with the increase of slope. The mean value of the maximum vertical acceleration respones significantly increases with the increase of the length to width ratio. Based on the above laws, the study constructs a digital twin model of the central roof of Shenyang south station combined with the concept of intelligent construction, evaluates the seismic loads on its non-structural components, and proposes targeted intelligent seismic strategies.