基于可靠度理论的简支梁配筋选型

Simply supported beam reinforcement configuration and model selection based on the reliability theory

针对钢筋和混凝土等材料的性能在空间上的变异性、不均匀性问题,考虑到可靠度理论以不确定因素作为研究对象,能更好地模拟构件的实际受力情况,得到更可取的配筋方案。据此提出了基于可靠度理论的配筋方法,应用于简支梁的优化设计。结果表明:基于可靠度理论的算法比常规算法更节省材料用量,所得配筋方案经规范公式检验满足设计要求。

For materials such as steel, concrete performance on the spatial variability and non - uniformity problem, considering the reliability theory to uncertain factors as the research object, which can better to simulate the actual stress distribution of components. Getting preferable reinforcement calculation scheme will be useful to put forward the reinforcement method based on reliability theory applied to the optimization of beam design. The results show that the algorithm based on reliability theory is better than conventional algorithm to save the material consumption. The results obtained by the standard formula test meet the design requirements and can provide a reference for practical engineering design.