钢筋混凝土楼板均质化有限元模型  

Finite Element Model of Reinforced Concrete Slabs with Assumed Homogeneous Material

作　　者：王洪涛[1] 刘嫄春[1] 邵新妍[1] 李爽[2] 

机构地区：[1]东北农业大学水利与土木工程学院,哈尔滨159036 [2]哈尔滨工业大学土木工程学院,159006

出　　处：《特种结构》2017年第3期21-26,共6页Special Structures

基　　金：黑龙江省教育厅科学技术研究项目(12511057)

摘　　要：根据已有的钢筋混凝土楼板实验数据,首次提出一种采用假设的非线性均质材料、壳元模型,能够在结构整体分析中模拟钢筋混凝土楼板。首先,提出假设材料的参数化应力-应变关系,然后根据已有实验数据标定公式中参数,进而给出模拟各种强度等级混凝土楼板的材料应力-应变关系。通过计算结果与实验数据对比,证明该模型可以很好地模拟钢筋混凝土楼板的平面内非线性行为,并且在结构整体有限元分析中易于收敛。Based on existing experimental data of reinforced concrete slabs, for the first time, a numerical method to simulate reinforced concrete slabs in the structural analysis was proposed using shell elements and homogeneous, isotropie, and nonlinear material. A parametric stress-strain curve formula was proposed for this assumed material, in which the parameters were determined based on the experimental data. Various stressstrain curves were then obtained for concrete with different strength grades. At last, compared with experimental results, the proposed numerical model was verified to be used to simulate the nonlinear behavior of reinforced concrete floors so that the finite element analysis results of entire structure system can easily converge.

关 键 词：钢筋混凝土楼板 均质化有限元模型 非线性分析 

分 类 号：TU375[建筑科学—结构工程]