计算力学学报2016，Vol.33Issue(3)：313-320,8.DOI:10.7511/jslx201603006
钢筋混凝土开孔深梁有限元分析与设计研究
Finite element analysis of RC deep beams with openings and researching of the design method
摘要
Abstract
The behavior of reinforced concrete (RC) deep beams is different from shallow beams and the situation becomes more complex since the presence of web openings .All codes presented are short of explaining the exact behavior of deep beams and the scope of application .However ,no code provision exists for the deep beams with openings .In this paper ,nonlinear finite element analysis method is used to the effectiveness of design methods for RC deep beams ,including reinforcement bond‐slip model and fracture‐plastic model ,w hich is suitable for nonlinear analysis of concrete structures .A series of RC deep beams with openings ,are analyzed and the simulation results are found agreed well with test results .And it can exactly predict such as cracks ,failure modes and limit strengths .It finds out that strut‐and‐tie model (STM ) method is more optimized than the internal forces method and the stress graphical method among the present design methods .Based on these results ,a new nonlinear design method ,generally applying to all deep beams with opening ,is presented and proved the most optimized one w hen compared capacity ,ductility ,steel amount and material utilization with the others .关键词
开孔深梁/仿真/断裂塑性/压拉杆模型/内力法/应力图形法/非线性设计方法Key words
deep beam with openings/simulation/fracture-plastic/strut-and-tie model/internal force method/stress graphic method/nonlinear design分类
建筑与水利引用本文复制引用
谭子希,刘霞,易伟建..钢筋混凝土开孔深梁有限元分析与设计研究[J].计算力学学报,2016,33(3):313-320,8.基金项目
国家自然科学基金（51338004，51078133）资助项目． （）
