The component failure of spoke-wheel cable structures is a major concern among the present structural engineering community. This paper investigated the effect of component failure on the spoke-wheel cable structures through numerical and experimental studies. Firstly, a new simulation modification method was introduced based on the building information modelling (BIM) and three-dimensional laser scanning (3DLS). Then, the finite element (FE) simulation was carried out using the original or modified model and related to the experimental study on the component failure of a typical spoke-wheel cable structure. Breakages of the spoke cables, poles, and inner-rings were considered to evaluate their influences on the behaviour of the spoke-wheel cable structure. The accuracy enhancement brought by the novel approach based on BIM + 3DLS was demonstrated. Furthermore, the structural reliability analysis after the component failure based on the modified FE model was conducted. The result indicates that the breakage of the ring cable caused the collapse of the entire structure and the breakage of the lower spoke cable led to a negative reliability index indicating a structural failure as well. However, after breaking the upper spoke cable, the reliability index remained positive, although large displacements occurred at some nodes. In contrast, the breakage of the pole had a relatively small influence on the structure and did not cause the failure of the whole structure. Moreover, the method based on BIM + 3DLS could help to establish a more accurate simulation model and reduce the calculation errors of the cable force and structural displacement significantly.

辐条轮索结构的部件失效是当前结构工程界关注的主要问题。本文通过数值和实验研究研究了部件失效对辐条轮索结构的影响。首先，介绍了一种基于建筑信息模型（BIM）和三维激光扫描（3DLS）的仿真修改方法。然后，使用原始或修改模型进行有限元（FE）模拟，并与典型辐条轮电缆结构的部件失效的实验研究相关。考虑辐条电缆、杆和内环的断裂，以评估它们对辐条轮电缆结构行为的影响。展示了基于 BIM + 3DLS 的新方法带来的精度提升。基于改进的有限元模型进行构件失效后的结构可靠性分析。结果表明，环索断裂导致整个结构倒塌，下辐条索断裂导致负可靠性指数也表明结构失效。然而，在上辐条电缆断裂后，可靠性指数仍然为正，尽管在一些节点处发生了较大的位移。相比之下，电杆的断裂对结构的影响相对较小，不会导致整个结构的失效。此外，基于BIM+3DLS的方法有助于建立更精确的仿真模型，显着降低索力和结构位移的计算误差。