基于改进离散粒子群算法的高层型钢混凝土混合结构地震失效模式优化

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中文摘要
通过优化失效模式有目的地控制结构的屈服机制和损伤破坏过程,提高高层混合结构抗地震倒塌能力。本项目以型钢混凝土框架-核心筒混合结构为研究对象,采用数值分析、结构试验、数学优化相结合的方法,系统地开展地震失效模式优化与灾变过程控制研究。首先,结合精细化数值模拟和整体结构拟动力试验揭示该类结构在地震作用下的可能失效模式;然后,研究不同失效模式时构件损伤、局部破坏与整体失效的内在联系,了解地震能量在主要构件之间、结构楼层之间的分配迁移规律,基于能量分析建立结构抗倒塌能力的量化指标函数;进而,针对失效模式优化问题具有的强非线性、多目标、多约束、离散变量、计算成本高等特点改进粒子群算法,以抗地震倒塌能力和经济效益为目标函数,建立优化模型并实现动态求解;最后,了解最优失效模式与设计参数、地震动的关系,提出基于结构最优失效模式的参数优选及灾变控制方法。
英文摘要
By optimizing the failure mode, the yield mechanism and damage process of the structure are controlled, and the seismic collapse-resistant capacity of the high-rise hybrid structure is improved. In order to systematically carry out the research of earthquake failure mode optimization and catastrophe process control, this project is intended to study on steel reinforced concrete frame-reinforced concrete core wall hybrid structure based on the method of combining numerical analysis, structural testing and mathematical optimization. First, combining with the fine numerical simulation and pseudo-dynamic test on overall structure, the potential failure models of this kind of structure under earthquake will be revealed. Next, the internal relationship between damage, local damage and overall failure under different failure modes is researched to understand the distribution and evolution of energy between the main component and the structure level. Thus, quantitative index function of structure resistance to collapse is established based on energy distribution. And then, according to the characteristics of failure mode optimization problem such as strongly nonlinear, multi-objective, multiple constraints, discrete variable, high computational expense and so on, the particle swarm algorithm is improved. The optimization model is established and the dynamic solution is realized by taking the anti-earthquake collapse ability and economic benefit as the objective function. Finally, the relationship among the best failure model, design parameter and ground motion will be investigated. Parameter optimization and cataclysm control methods based on the optimal failure mode of the structure will be put forward. The project results will provide theoretical and experimental support for the aseismic and optimal design of the hybrid structure.
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DOI:10.12989/sem.2020.76.4.465
发表时间:2020
期刊:Structural Engineering and Mechanics
影响因子:--
作者:Yanhua Liu;Lei Zeng;Changjun Liu;Jinxu Mo;Buqing Chen
通讯作者:Buqing Chen
DOI:--
发表时间:2021
期刊:科学技术与工程
影响因子:--
作者:王振宇;陈得意;杜磊;曾磊
通讯作者:曾磊
DOI:--
发表时间:2023
期刊:土木工程与管理学报
影响因子:--
作者:蔡炳良;陈得意;胡俊亮;曾磊
通讯作者:曾磊
DOI:10.13197/j.eeev.2021.06.114.wangb.011
发表时间:2021
期刊:地震工程与工程振动
影响因子:--
作者:王斌;霍光;李藤;曾磊;王家滨
通讯作者:王家滨
DOI:10.1016/j.istruc.2023.06.004
发表时间:2023-08
期刊:Structures
影响因子:4.1
作者:Yunfeng Xiao;Yaoting Zhang;L. Zeng;Yanhua Liu;Kangkang Zhou;Ao Wang;Ruige Li
通讯作者:Yunfeng Xiao;Yaoting Zhang;L. Zeng;Yanhua Liu;Kangkang Zhou;Ao Wang;Ruige Li
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