论文部分内容阅读
钢筋混凝土D区的配筋设计是一个难点。基于试验结果的经验设计方法一直饱受诟病,拉压杆模型等应力方法却又不够成熟,基于整体式模型的遗传演化算法还存在诸多问题。基于分离式模型和非线性分析结果的遗传演化算法可以直观地得到较为分散的配筋设计,利用钢筋分离模型遗传演化结构优化构造了悬臂深梁、异形梁、牛腿等多种钢筋混凝土D区构件的配筋拓扑,验证了钢筋分离模型遗传演化结构优化在钢筋混凝土D区配筋优化方面的普遍能力。还借助有限元软件探讨了一组开洞剪力墙的非线性力学性能,证实了钢筋分离模型遗传演化结构优化设计的构件在比弹性应力方法节省20%左右钢筋用量、比经验方法节省超过75%钢筋用量的前提下,与弹性应力方法设计的构件承载能力基本相当,比经验方法设计的构件极限承载力仅低不到15%;且钢筋分离模型遗传演化结构优化从延性方面对钢筋混凝土D区构件的性能进行了改善。
Reinforced concrete D zone reinforcement design is a difficult point. Empirical design methods based on experimental results have been criticized for a long time. However, stress methods such as tension and compression rod models are not yet mature enough. There are still many problems in the genetic evolution algorithm based on the integral model. The genetic evolutionary algorithm based on the separation model and the nonlinear analysis results can intuitively obtain a more decentralized reinforcement design. By using the genetic evolution structure optimization of the steel separation model, a variety of reinforced concrete sections D, such as cantilever deep beam, special shaped beam, The reinforcement topology of the members verified the universal ability of structural optimization of the steel-reinforced separation model to optimize the reinforcement in the D zone of reinforced concrete. The nonlinear mechanical properties of a group of shear walls with openings were also discussed by means of finite element software. It was confirmed that the structural optimization design of the steel-reinforced separation model can save about 20% more steel than the elastic stress method and save more than 75% Under the premise of the amount of steel reinforcement, the bearing capacity of the member designed by the method of elastic stress is almost equal, only less than 15% lower than the ultimate bearing capacity of the member designed by the empirical method. And the structural evolution of the steel- Zone member performance has been improved.