The seismic damage simulation of buildings has become a research focus because of the rapid urbanisation and the increase in the building density. However, there is no consensus regarding whether the spatial variability of ground motions at the local sites must be considered in collapse simulations. Thus, in the present study, a numerical model based on the finite element method that can effectively predict the collapse behaviour of reinforced concrete buildings is developed. Then, field ground motion records are selected from the measurement database. Finally, a building neighbourhood comprising four typical three-storey reinforced concrete frame structures is established as a numerical example, and the effects of the spatial variability and intensity of ground motions on the structural response and collapse behaviour of buildings are comprehensively investigated. The results indicate that the spatial variability of the ground motions significantly affects the structural responses and collapse behaviours of the buildings within a certain range of the ground motion intensity. The collapse behaviour of a single building exhibits significant differences with different ground motion intensities. These differences are attributed to the coupling of the nonlinearity of the structures and the randomness of the ground motions. It is concluded that the spatial variability of ground motions should be fully considered in the collapse simulation of buildings.

由于城市化的快速发展和建筑密度的提高，建筑的地震破坏模拟已成为研究的重点。但是，关于塌陷模拟中是否必须考虑地面运动在空间上的空间变异性尚无共识。因此，在本研究中，建立了一种基于有限元方法的数值模型，可以有效地预测钢筋混凝土建筑物的倒塌行为。然后，从测量数据库中选择地震动记录。最后，建立了一个包含四个典型的三层钢筋混凝土框架结构的建筑物邻域作为数值示例，全面研究了地震动的空间变异性和强度对建筑物的结构响应和倒塌行为的影响。结果表明，地震动的空间变异性在一定程度的地震动强度范围内显着影响建筑物的结构响应和倒塌行为。单个建筑物的倒塌行为在不同的地面运动强度下表现出显着差异。这些差异归因于结构的非线性与地震动的随机性的耦合。结论是，在建筑物倒塌模拟中应充分考虑地震动的空间变异性。结果表明，地震动的空间变异性在一定程度的地震动强度范围内显着影响建筑物的结构响应和倒塌行为。单个建筑物的倒塌行为在不同的地面运动强度下表现出显着差异。这些差异归因于结构的非线性与地震动的随机性的耦合。结论是，在建筑物倒塌模拟中应充分考虑地震动的空间变异性。结果表明，地震动的空间变异性在一定程度的地震动强度范围内显着影响建筑物的结构响应和倒塌行为。单个建筑物的倒塌行为在不同的地面运动强度下表现出显着差异。这些差异归因于结构的非线性与地震动的随机性的耦合。结论是，在建筑物倒塌模拟中应充分考虑地震动的空间变异性。这些差异归因于结构的非线性与地震动的随机性的耦合。结论是，在建筑物倒塌模拟中应充分考虑地震动的空间变异性。这些差异归因于结构的非线性与地震动的随机性的耦合。结论是，在建筑物倒塌模拟中应充分考虑地震动的空间变异性。