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该文利用有限元法对一幢12层钢筋混凝土框架结构进行了土──上部结构的空间协同工作分析，旨在研究地基土中发生支承损失（即土中孔洞）时对框架梁弯矩的影响。数值结果表明，当支承损失发生于基础底面时，会对梁弯矩产生较明显的影响，随着孔洞尺寸的加大，弯矩变化意为剧烈。但随着孔洞与基础底面距离的增大及楼层的提高，其影响迅速减小。
In this paper, a 12-story reinforced concrete frame structure was analyzed by using the finite element method to analyze the spatial collaborative work of the soil-superstructure to study the bending moment of the frame beam when the support loss (ie the hole in the soil) occurred in the foundation soil. influences. The numerical results show that when the bearing loss occurs on the bottom of the foundation, it will have a significant impact on the bending moment of the beam. With the increase of the size of the hole, the bending moment change is intense. However, as the distance between the hole and the base floor increases and the floor increases, the impact decreases rapidly.