斜拉桥承台结构非线性有限元配筋设计研究

基于承载能力和裂缝控制双重因素 ,对斜拉桥承台结构进行了配筋设计研究。首先 ,对结构进行三维弹性有限元分析 ,结合拉应力图形配筋公式确定初步配筋方案 ;然后 ,利用平面子结构方法计算控制区裂缝宽度、深度和钢筋应力 ,对配筋方案进一步优化。结果表明 ,三维有限元结合平面子结构方法可以有效解决非杆系钢筋混凝土结构的配筋问题

NON-LINEAR FEM REINFORCEMENT-DISPOSITION STUDY ONPIPELINE BRIDGE PILE-SUPPORT

Considering the load-carrying capability and crack control,reinforcement-disposition of plie-support is researched.First,the whole structure is studied in three-dimension elastic FEM,and the initial reinforcement-disposition plan is drawn according to tensile stress graph;then,crack width,crack depth and steel stress are computed in plane substructure method,and the initial plan is optimized.The results indicate three-dimension FEM combining with plane substructure method is an efficacious way to settle the reinforcement-disposition of non-pole reinforced concrete structure.