［提要］  采用了弹塑性纤维单元模拟钢筋混凝土梁、柱杆件，通过材料应力应变本构关系对截面动态积分，直接得到构件刚度及恢复力特性，提出了适用于该模型的计算方法和相应的钢筋和混凝土材料单轴应力应变本构关系。并应用通用有限元软件ABAQUS对钢筋混凝土悬臂柱及钢筋混凝土框架进行了拟动力反复加载计算，并与试验结果进行对比分析。

［关键词］  弹塑性  截面纤维模型  材料本构模型  ABAQUS

Study on Elasticplastic Finite Element Analysis Based on Section Fiber Beamcolumn Elements/Li Chengming1，2, Li Zhishan3, Wang Guojian2(1 Civil Engineering College of Tongji Uni., Shanghai 200092, China; 2 Shanghai Xiandai Architectural Design (Group) Co., Ltd., Shanghai 200442, China; 3 SCL Consultants Pty Ltd., Guangzhou 510170, China)

Abstract:The elastic-plastic fiber model has been used to simulate beam and column. Dynamic integral was carried out from material stress-strain constitutive relation. Frame rigidity and restoring forces properties were obtained directly. Computational methodology suitable for the fiber model and uniaxial stress-strain relation of reinforcement and concrete are presented. FEM software of ABAQUS was used to calculate the pseudo dynamic cyclic loads on concrete cantilever column and frame, and comparative analysis with test results was done.

Keywords:elastic-plastic; section fiber model; material constitutive model; ABAQUS

1)      同济大学土木工程学院，上海，200092；2)上海现代建筑设计(集团)有限公司，200442；3)广州数力工程顾问有限公司，510170。