摘要
长期以来,人们用线弹性理论来分析钢筋混凝土结构的应力或内力,而以极限状态的设计方法确定构件的承载能力、刚度和抗裂性,显然二者是互不协调的.采用非线性有限元方法,引入了混凝土多参数强度准则和非线性本构关系,能较好地反映了混凝土和钢筋的非线性特性,并编写了一个非线性有限元计算程序,计算结果与试验结果吻合较好,为进一步研究工作和设计提供了参考.
For a long time, people always use linear elasticity theory to analyze reinforced concrete structure stress, while use limit state design methods to calculate the carrying capacity, rigidity and crack resisting. It is apparent that the metheds aren't in harmony with each ether. In this paper, the authors adopt nonlinear finite element method and introduce several parameter strength criterion and nonlinear stress-strain relations, which can well reflect the nonlinear characteristic or reinforce concrete structures. The authors have designed a nonlinear finite element program.The results of the calculation coincide with those measured in experiments. It will provide some references for designers and deep research.
出处
《南昌工程学院学报》
CAS
2005年第2期49-52,共4页
Journal of Nanchang Institute of Technology
基金
江西省经贸委发革改基金资助项目(Z-1968).
关键词
钢筋混凝土结构
非线性分析
有限元
程序设计
reinforced concrete structure
nonlinear analysis
finite element
program design
