采用组合式钢筋混凝土非线性有限元方法，对集中荷载作用下钢筋混凝土板进行了极限承载力分析．混凝土材料采用弹塑性本构模型；为考虑材料达到极限强度后的性能，用弥散裂缝模式模拟混凝土拉裂后的应变软化及应力释放，用应变空间破坏面近似处理混凝土的压碎型破坏；钢筋采用等效薄膜模拟．经与试验结果对比，两者吻合性较好． The ultimate bearing capacity of reinforced concrete slab subjected to concentrated loads was analyzed using the combined finite element method of reinforced concrete. The elasto-plastic constitutive model is adopted for concrete materials. In order to consider the properties of the material after reaching its ultimate strength, the distorted crack model is used to simulate the strain softening and stress release after the concrete cracking, and the strain space damage surface is used to approximate the crushing failure of the concrete. Equivalent thin film simulation. Compared with the test results, the two are in good agreement.