【摘要】 利用有限元分析软件ANSYS设置混凝土、钢筋和外包角钢的单元类型、控制参数及材料模型,进行精细网格划分,建立实足尺寸的湿式外包钢加固RC-L形柱的有限元模型。有限元仿真分析得到了RC-L形柱模型中混凝土、钢筋骨架及外包角钢的应力云图和相应的荷载位移曲线。在相同的边界条件及加载模式下,相比未加固柱模型,湿式外包钢加固模型破坏前用了较多荷载子步数且产生较小位移。对比分析结果,得出湿式外包钢加固法应用于钢筋混凝土异形柱构件的加固具有良好的性能。更多还原

【Abstract】 The finite element model of full size RC-L column is established by using finite element analysis software ANSYS.The element types,control parameters and material models of concrete,steel bar and angle are set respectively and the grids are divided finely.Based on the analysis of FEM simulation,the stress and the corresponding load-displacement curves of concrete,steel skeleton and the external angle of RC-L-shaped column model are obtained.Under the same boundary conditions and loading,the model reinforced by wet-enclosing steel takes more load steps and produces a smaller sub-shift before the damage when compared with the model without reinforcement.Comparing with the analysis results,it can be seen that it has a good performance to reinforce RC column with special shape by wet-enclosing steel reinforcement method.更多还原