基于离散模型有限元分析的 GBESO 方法及其在 RC D 区构件辅助设计中的应用

IF 1.6 4区 工程技术 Q3 CONSTRUCTION & BUILDING TECHNOLOGY
Hu-zhi Zhang, Yi-jun Kang, Li-kun Li, Jian-qun Wang
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引用次数: 0

摘要

为了更好地利用拓扑优化理论协助设计钢筋混凝土(RC)D-区域构件,提出了一种新的应用模式,即基于离散模型有限元分析(FEA)的遗传双向进化结构优化(GBESO)方法。相应地,还推导出了 RC D 区构件加固布局的设计方法。在涉及带开口的深梁的数值实例中进行了非线性有限元分析验证。结果表明,与进化结构优化算法(ESO)相比,GBESO 算法具有更好的全局优化能力。它还提供了更符合优化目标的钢筋拓扑结构,从而降低了钢材消耗,提高了钢筋利用率。此外,与经验法相比,通过在构件中引入倾斜钢筋,构件的抗剪强度提高到了与抗弯强度相当的水平,从而显著提高了极限承载能力和弹塑性变形能力,并改善了延性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The GBESO Method Based on FEA with Discrete Models and Application for Aided Design to Members in RC D-Region

To better utilize topology optimization theory to assist in designing reinforced concrete (RC) D-region members, a novel application mode, the Genetic Bi-directional Evolutionary Structural Optimization (GBESO) method based on Finite Element Analysis (FEA) with discrete models is proposed. Correspondingly a design method for reinforcement layout of RC D-region members is also derived. Non-linear FEA verification is conducted on numerical examples involving deep beams with openings. The results demonstrate that the GBESO algorithm exhibits better global optimization capacities compared to Evolutionary Structural Optimization-type (ESO-type) algorithms. It also provides rebar topologies that are more in line with the optimization objective, bringing lower steel consumption and higher rebar utilization rates. Moreover, by introducing inclined rebar to the members, their shear strength is enhanced to a level comparable to the flexural one, significantly improving ultimate load-bearing capacity, elastoplastic deformation capacity, and better ductility compared to empirical method.

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来源期刊
Journal of Advanced Concrete Technology
Journal of Advanced Concrete Technology 工程技术-材料科学:综合
CiteScore
3.70
自引率
10.00%
发文量
45
审稿时长
3.5 months
期刊介绍: JACT is fast. Only 5 to 7 months from submission to publishing thanks to electronic file exchange between you, the reviewers and the editors. JACT is high quality. Peer-reviewed by internationally renowned experts who return review comments to ensure the highest possible quality. JACT is transparent. The status of your manuscript from submission to publishing can be viewed on our website, greatly reducing the frustration of being kept in the dark, possibly for over a year in the case of some journals. JACT is cost-effective. Submission and subscription are free of charge . Full-text PDF files are available for the authors to open at their web sites. Scope: *Materials: -Material properties -Fresh concrete -Hardened concrete -High performance concrete -Development of new materials -Fiber reinforcement *Maintenance and Rehabilitation: -Durability and repair -Strengthening/Rehabilitation -LCC for concrete structures -Environmant conscious materials *Structures: -Design and construction of RC and PC Structures -Seismic design -Safety against environmental disasters -Failure mechanism and non-linear analysis/modeling -Composite and mixed structures *Other: -Monitoring -Aesthetics of concrete structures -Other concrete related topics
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