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学者姓名：祁皑
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为了对比不同开孔形式对腹板开孔钢梁抗冲击性能的影响,比较了腹板开六边形与圆形孔的钢梁在孔间距和孔高不同时的等效抗弯刚度,开展了落锤冲击试验和有限元分析.在试验过程中采集了落锤冲击力、位移以及孔周围应变的数据,主要对开孔形式、冲击能量、孔间距、孔高和冲击作用位置进行参数分析.结果表明:相较于圆形腹板开孔钢梁,六边形腹板开孔钢梁在落锤冲击作用下产生变形更大;圆形腹板开孔钢梁的冲击力平台值更大,抵抗冲击作用的能力和能量耗散能力更强;圆形腹板开孔钢梁产生的最大位移为六边形腹板开孔钢梁最大位移的86.49%.有限元数值模型可以较为准确地模拟腹板开孔钢梁在冲击作用下的动力响应.两种腹板开孔钢梁的冲击最不利位置均在距离梁端大约1/4计算长度处.冲击作用在梁端附近产生的位移最小,且受开孔形式的影响较小.
Keyword ：
动力响应 动力响应 开孔形式 开孔形式 抗冲击性能 抗冲击性能 有限元数值模拟 有限元数值模拟 腹板开孔钢梁 腹板开孔钢梁
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| GB/T 7714 | 陈华艳 , 刘用滨 , 罗才松 et al. 腹板开六边形与圆形孔的钢梁冲击动力响应对比研究 [J]. | 建筑钢结构进展 , 2025 , 27 (3) : 55-65 . |
| MLA | 陈华艳 et al. "腹板开六边形与圆形孔的钢梁冲击动力响应对比研究" . | 建筑钢结构进展 27 . 3 (2025) : 55-65 . |
| APA | 陈华艳 , 刘用滨 , 罗才松 , 傅佳铭 , 王枫轩 , 付朝江 et al. 腹板开六边形与圆形孔的钢梁冲击动力响应对比研究 . | 建筑钢结构进展 , 2025 , 27 (3) , 55-65 . |
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为实现建筑和工业废弃物的再利用,采用镍铁渣代替部分水泥、再生粗骨料代替天然骨料制备镍铁渣再生混凝土(RFC).进一步地,将RFC填入圆钢管中形成钢管掺镍铁渣再生混凝土(RFCFST)柱.对 11 根RFCFST柱进行水平低周往复抗震性能试验研究.试验变量包括再生粗骨料取代率、轴压比、约束水平和剪跨比.试验结果表明,RFCFST柱与传统钢管混凝土柱的破坏模式相似.P-Δ效应会显著降低柱的抗侧能力和变形能力,尤其是在大轴压比和大剪跨比情况下.骨料取代率对RFCFST柱的承载力、变形能力和耗能能力几乎无影响.随着轴压比的增大,柱的变形能力降低,但单圈耗能能力增强.试件的水平承载力和延性随着套箍水平的提高而提高,随着剪跨比的增大而降低.基于试验结果和理论分析,提出了RFCFST柱水平力-位移角恢复力模型.
Keyword ：
再生骨料混凝土 再生骨料混凝土 恢复力模型 恢复力模型 抗震性能 抗震性能 钢管混凝土 钢管混凝土 镍铁渣 镍铁渣
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| GB/T 7714 | 罗才松 , 许力 , 陈华艳 et al. 圆钢管掺镍铁渣再生混凝土柱抗震性能及恢复力模型研究 [J]. | 建筑钢结构进展 , 2025 , 27 (2) : 104-114 . |
| MLA | 罗才松 et al. "圆钢管掺镍铁渣再生混凝土柱抗震性能及恢复力模型研究" . | 建筑钢结构进展 27 . 2 (2025) : 104-114 . |
| APA | 罗才松 , 许力 , 陈华艳 , 付朝江 , 祁皑 . 圆钢管掺镍铁渣再生混凝土柱抗震性能及恢复力模型研究 . | 建筑钢结构进展 , 2025 , 27 (2) , 104-114 . |
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Finding an optimal isolator arrangement for asymmetric structures using traditional conceptual design methods that can significantly minimize torsional response while ensuring efficient horizontal seismic isolation is cumbersome and inefficient. Thus, this work develops a multi-objective optimization method to enhance the torsional resistance of asymmetric base-isolated structures. The primary objective is to simultaneously minimize the interstory rotation of the superstructure, the rotation of the isolation layer, and the interstory displacement of the superstructure without exceeding the isolator displacement limits. A fast non-dominated sorting genetic algorithm (NSGA-II) is employed to satisfy this optimization objective. Subsequently, the isolator arrangement, encompassing both positions and categories, is optimized according to this multi-objective optimization method. Additionally, an optimization design platform is developed to streamline the design operation. This platform integrates the input of optimization parameters, the output of optimization results, the finite element analysis, and the multi-objective optimization method proposed herein. Finally, the application of this multi-objective optimization method and its associated platform are demonstrated on two asymmetric base-isolated structures of varying heights and plan configurations. The results indicate that the optimal isolator arrangement derived from the optimization method can further improve the control over the lateral and torsional responses of asymmetric base-isolated structures compared to conventional conceptual design methods. Notably, the interstory rotation of the optimal base-isolated structure is significantly reduced, constituting only approximately 33.7% of that observed in the original base-isolated structure. The proposed platform facilitates the automatic generation of the optimal design scheme for the isolators of asymmetric base-isolated structures, offering valuable insights and guidance for the burgeoning field of intelligent civil engineering design. © Institute of Engineering Mechanics, China Earthquake Administration 2025.
Keyword ：
Conceptual design Conceptual design Genetic algorithms Genetic algorithms Multiobjective optimization Multiobjective optimization Optimal systems Optimal systems Shape optimization Shape optimization Structural design Structural design Structural optimization Structural optimization
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| GB/T 7714 | Zhang, Jiayu , Qi, Ai , Yang, Mianyue . Multi-objective optimal design of asymmetric base-isolated structures using NSGA-II algorithm for improving torsional resistance [J]. | Earthquake Engineering and Engineering Vibration , 2025 , 24 (3) : 811-825 . |
| MLA | Zhang, Jiayu et al. "Multi-objective optimal design of asymmetric base-isolated structures using NSGA-II algorithm for improving torsional resistance" . | Earthquake Engineering and Engineering Vibration 24 . 3 (2025) : 811-825 . |
| APA | Zhang, Jiayu , Qi, Ai , Yang, Mianyue . Multi-objective optimal design of asymmetric base-isolated structures using NSGA-II algorithm for improving torsional resistance . | Earthquake Engineering and Engineering Vibration , 2025 , 24 (3) , 811-825 . |
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Asymmetric base-isolated structures subjected to severe torsion may suffer further aggravation of their torsional and translational responses under pulse-type earthquakes. To counteract these detrimental impacts, this study introduces a two-stage optimal design method. The first stage involved the application of the NSGA-II algorithm for determining an optimal isolator arrangement-namely, position and category-with the objective of reducing both the maximum interstory rotation of the superstructure and the isolation layer. In the second stage, the inclusion of viscous dampers served to minimize the excessive translational response triggered by pulse-type earthquakes. The influence of these dampers' positions on the structural response was carefully evaluated. The final application of this optimal design method was demonstrated on an asymmetric base-isolated structure. The results indicated a significant reduction in the translational and torsional responses of the asymmetric base-isolated structure when the two-stage optimal design method was utilized, compared to those of structures designed using traditional conceptual methods. It was found that by installing viscous dampers in the isolation layer along both the x and the y directions-specifically, underneath the mass center of the superstructure (CMS)-the effectiveness of the torsional resistance from the first stage could be effectively maintained.
Keyword ：
asymmetric base-isolated structures asymmetric base-isolated structures isolator arrangement isolator arrangement NSGA-II algorithm NSGA-II algorithm pulse-type earthquakes pulse-type earthquakes structural response structural response two-stage optimal design method two-stage optimal design method viscous dampers viscous dampers
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| GB/T 7714 | Zhang, Jiayu , Qi, Ai , Yang, Mianyue . Two-Stage Optimal Design Method for Asymmetric Base-Isolated Structures Subject to Pulse-Type Earthquakes [J]. | BUILDINGS , 2024 , 14 (6) . |
| MLA | Zhang, Jiayu et al. "Two-Stage Optimal Design Method for Asymmetric Base-Isolated Structures Subject to Pulse-Type Earthquakes" . | BUILDINGS 14 . 6 (2024) . |
| APA | Zhang, Jiayu , Qi, Ai , Yang, Mianyue . Two-Stage Optimal Design Method for Asymmetric Base-Isolated Structures Subject to Pulse-Type Earthquakes . | BUILDINGS , 2024 , 14 (6) . |
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In order to study the impact resistance of recycled concrete columns of steel tubular with nickel iron slag, 11 specimens of recycled concrete columns of round steel tubes are designed with coarse aggregate substitution rate, axial compression ratio, weight of drop weight and impact energy as the changing parameters. The influence of axial compression ratio, coarse aggregate substitution rate, impact energy and drop weight steel tube on the lateral impact performance of recycled concrete column is studied. The results show that the impact resistance of recycled concrete filled steel tube column is good, and the energy absorption rate is basically constant at about 67%. Compared with the replacement rate of 0%, the mid-span deflection of the specimen decreased by 8.9% on average when the replacement rate of recycled coarse aggregate is 30%. The replacement rate of recycled coarse aggregate is 70%, and the mid-span deflection of the specimen decreases by 11.4% on average. With the increase of impact energy, the mid-span residual displacement increases significantly. When the axial compression ratio is less than 0~0.4, the axial force can improve the impact resistance of recycled concrete filled steel tube. The drop weight increases from 330 kg to 430 kg, and the impact duration increases by 16%. As the collar coefficient increases, the mid-span deflection decreases. © 2024 Nanjing University of Aeronautics an Astronautics. All rights reserved.
Keyword ：
Acceleration Acceleration Axial compression Axial compression Concrete aggregates Concrete aggregates Concrete construction Concrete construction Drops Drops Recycling Recycling Slags Slags Tubes (components) Tubes (components) Tubular steel structures Tubular steel structures
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| GB/T 7714 | Luo, Caisong , Chen, Huayan , Fu, Chaojiang et al. Impact Performance Experiment of Recycled Ferronickel Slag Concrete Column with Round Steel Tube [J]. | Journal of Vibration, Measurement and Diagnosis , 2024 , 44 (2) : 291-297 . |
| MLA | Luo, Caisong et al. "Impact Performance Experiment of Recycled Ferronickel Slag Concrete Column with Round Steel Tube" . | Journal of Vibration, Measurement and Diagnosis 44 . 2 (2024) : 291-297 . |
| APA | Luo, Caisong , Chen, Huayan , Fu, Chaojiang , Deng, Shupeng , Qi, Ai , Wang, Bizhen et al. Impact Performance Experiment of Recycled Ferronickel Slag Concrete Column with Round Steel Tube . | Journal of Vibration, Measurement and Diagnosis , 2024 , 44 (2) , 291-297 . |
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To study the damage of a recycled aggregate concrete filled-steel tubular (RACFST) column under impact load, 16 RACFST columns were subjected to drop hammer impact tests. Based on the test, a finite element model of RACFST was established to analyze the influence of different impact velocity, impact mass and section steel content on the damage degree of the RACFST columns. By controlling impact mass and impact velocity, damage assessment grades were divided based on damage factor d^ and elastic-plastic angle 0, and the damage assessment curves of the RACFST columns were fit by simulation. The results show that the difference between FEM results and experimental results is less than 10%, and the former can reflect the change of the latter. The peak time of mid-span deflection in the impact process lagged far behind the peak time of impact force, and impulse is 1. 23 times of momentum. With the increase of impact velocity, the mid-span deflection increases in a parabolic trend. The increase of impact mass has little effect on the peak of impact force but has great effect on the mid-span deflection. With the increase of steel content in the section, the energy consumption of the member almost stabilizes around 90% . The overall damage and local damage of the RACFST columns could be quickly judged from the damage curve. © 2024 Chinese Vibration Engineering Society. All rights reserved.
Keyword ：
Columns (structural) Columns (structural) Concrete aggregates Concrete aggregates Deflection (structures) Deflection (structures) Hammers Hammers Tubular steel structures Tubular steel structures
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| GB/T 7714 | Chen, Huayan , Liu, Yongbin , Luo, Caisong et al. Damage assessment of recycled aggregate concrete filled-steel tubular column under impact load [J]. | Journal of Vibration and Shock , 2024 , 43 (12) : 97-108 . |
| MLA | Chen, Huayan et al. "Damage assessment of recycled aggregate concrete filled-steel tubular column under impact load" . | Journal of Vibration and Shock 43 . 12 (2024) : 97-108 . |
| APA | Chen, Huayan , Liu, Yongbin , Luo, Caisong , Huang, Jianzhong , Xu, Li , Fu, Chaojiang et al. Damage assessment of recycled aggregate concrete filled-steel tubular column under impact load . | Journal of Vibration and Shock , 2024 , 43 (12) , 97-108 . |
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To study the effects of the replacement rate of recycled coarse aggregate (R C A) and eccentricity on the mechanical properties of recycled aggregate concrete with ferronickel slag filled circular steel tube columns, 13 specimens were designed for axial and eccentric compression tests, and load-mid-span deflection curve, lateral deflection curve, stiffness degradation and energy dissipation were analyzed. Based on the research results of ordinary concrete filled steel tube (CFST) column, the prediction formula for the compression-bending capacity of recycled CFST is regressed. Results show that the deflection shape of the biased specimen conforms to the sinusoidal half wave curve. The position of the neutral axis of the cross section deviates to the compression zone during loading. When the replacement rate exceeds 30%, with the increase of R C A replacement rate, the ultimate bearing capacity of the specimen decreases, the stiffness degrades more,and the energy dissipation coefficient of the specimen decreases. With the increase of eccentricity,the ultimate bearing capacity of the specimen decreases,the envelops area of the lateral deflection curve increases gradually,and the stiffness degenerates more. The values calculated by the fitting formulas are in good agreement with the experimental results. © 2024 Xi'an Jiaotong University. All rights reserved.
Keyword ：
bearing capacity formula bearing capacity formula eccentric compression loading test eccentric compression loading test energy dissipation capacity energy dissipation capacity ferronickel slag ferronickel slag recycled aggregate concrete-filled steel tube recycled aggregate concrete-filled steel tube stiffness degradation stiffness degradation
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| GB/T 7714 | Luo, C. , Wang, F. , Fu, C. et al. Study on the mechanical behavior of recycled aggregate concrete with ferronickel slag filled circular steel tube column under bias compression; [圆钢管再生鎳铁渣混凝土柱偏压力学性能研究] [J]. | Chinese Journal of Applied Mechanics , 2024 , 41 (3) : 546-556 . |
| MLA | Luo, C. et al. "Study on the mechanical behavior of recycled aggregate concrete with ferronickel slag filled circular steel tube column under bias compression; [圆钢管再生鎳铁渣混凝土柱偏压力学性能研究]" . | Chinese Journal of Applied Mechanics 41 . 3 (2024) : 546-556 . |
| APA | Luo, C. , Wang, F. , Fu, C. , Qi, A. . Study on the mechanical behavior of recycled aggregate concrete with ferronickel slag filled circular steel tube column under bias compression; [圆钢管再生鎳铁渣混凝土柱偏压力学性能研究] . | Chinese Journal of Applied Mechanics , 2024 , 41 (3) , 546-556 . |
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Compared with traditional seismic structures, it is easier to control the critical parameters in a reasonable range by adjusting the layout of isolators, so as to reduce the adverse impact caused by superstructure eccentricities. Therefore, from the perspective of the torsional mechanism of asymmetric base-isolated structures, the influence law and degree of the torsional to lateral frequency ratio of base-isolated structures and the eccentricity in the isolation system on the torsional effect in different value ranges were analyzed. Results show that, the smaller the torsional to lateral frequency ratio is, the more obvious the torsional response is, and the small eccentricity in the isolation system will aggravate the torsional response. Torsional response is weakened when the torsional to lateral frequency ratio is greater than 1.2, and the eccentricity in the isolation system is close to a positive correlation with torsional response. Then, the explicit limit displacement ratio of the furthest isolator from the center of mass with or without eccentricity was derived under the condition that the displacement of isolator did not exceed the allowable value. The results of analysis indicate that there is a maximum isolation period to make the limit value obtain a minimum value. According to this, the limit value of the eccentricity under different torsional to lateral frequency ratios can be obtained, and the torsional response can be controlled within the limit range effectively, which provides effective references for designers in torsional design of asymmetric base-isolated structures. © 2023 Chinese Vibration Engineering Society. All rights reserved.
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| GB/T 7714 | Zhang, Jiayu , Qi, Ai , Yang, Mianyue . Research on mechanism of torsional effect and limits of critical parameters of asymmetric base-isolated structures [J]. | Journal of Vibration and Shock , 2023 , 42 (24) : 32-41 . |
| MLA | Zhang, Jiayu et al. "Research on mechanism of torsional effect and limits of critical parameters of asymmetric base-isolated structures" . | Journal of Vibration and Shock 42 . 24 (2023) : 32-41 . |
| APA | Zhang, Jiayu , Qi, Ai , Yang, Mianyue . Research on mechanism of torsional effect and limits of critical parameters of asymmetric base-isolated structures . | Journal of Vibration and Shock , 2023 , 42 (24) , 32-41 . |
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提出一种节点核心区采用钢套筒约束的装配式混凝土节点,实现梁柱节点的完全预制,提高结构的装配效率.约束钢套筒内沿梁上下部纵筋位置各设置一块可使柱钢筋穿过的内隔板,约束钢套筒外侧与梁纵筋连接.设计了 3 个采用钢套筒约束的装配式混凝土节点试件、1 个现浇钢筋混凝土节点试件进行低周往复荷载试验,研究钢套筒厚度、轴压比等不同参数下装配式混凝土节点的滞回性能.结果表明:钢套筒约束装配式混凝土节点滞回性能优于现浇钢筋混凝土节点;钢套筒约束核心区屈服后预制梁端发生塑性铰破坏,钢套筒约束装配式混凝土节点性能可达到预期效果;钢套筒约束装配式混凝土节点在相同轴压比 0.6 作用下,钢套筒厚度对滞回性能影响不大;试件钢套筒厚度相同情况下,试件SPJ-3 在轴压比 0.3 作用下,前期刚度下降.
Keyword ：
低周往复荷载试验 低周往复荷载试验 节点核心区 节点核心区 装配式混凝土 装配式混凝土 轴压比 轴压比 钢套筒厚度 钢套筒厚度
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| GB/T 7714 | 马永超 , 祁皑 , 郑莲琼 et al. 采用钢套筒约束装配式混凝土节点的滞回性能 [J]. | 南昌大学学报（工科版） , 2023 , 45 (1) : 44-50 . |
| MLA | 马永超 et al. "采用钢套筒约束装配式混凝土节点的滞回性能" . | 南昌大学学报（工科版） 45 . 1 (2023) : 44-50 . |
| APA | 马永超 , 祁皑 , 郑莲琼 , 薛潘荣 . 采用钢套筒约束装配式混凝土节点的滞回性能 . | 南昌大学学报（工科版） , 2023 , 45 (1) , 44-50 . |
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福州琅岐岛某酒店公寓楼改造为中学宿舍，抗震设防类别由标准设防(丙类)提升为重点设防类(乙类)，采用黏滞阻尼器对其进行抗震加固。对加设黏滞阻尼器模型和传统加固模型进行了罕遇地震下的抗震验算，对结构层间位移角、楼层位移、楼层剪力、地震输入能量分布和结构构件损伤等进行抗震性能分析，以及经济性对比。采用黏滞阻尼器进行抗震加固能有效将位移控制在2～3 倍的弹性层间位移角限值，大幅提高结构抗震超强能力，替代主体结构构件耗散50％～60％地震能量，减轻结构构件的损伤。加设阻尼器加固后的结构抗震性能明显优于传统的抗震加固方式，且大幅降低结构在改造加固中的工程造价(降低约30％)，可作为类似工程的参考。
Keyword ：
抗震加固 抗震加固 抗震性能分析 抗震性能分析 经济性 经济性 耗能 耗能 黏滞阻尼器 黏滞阻尼器
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| GB/T 7714 | 赵欣 , 祁皑 , 商昊江 . 速度型减震技术在抗震水准提高的改造工程中的应用 [C] //第十届全国再生混凝土学术交流会暨第六届全国建筑固废学术交流会论文集 . 2023 : 191-198 . |
| MLA | 赵欣 et al. "速度型减震技术在抗震水准提高的改造工程中的应用" 第十届全国再生混凝土学术交流会暨第六届全国建筑固废学术交流会论文集 . (2023) : 191-198 . |
| APA | 赵欣 , 祁皑 , 商昊江 . 速度型减震技术在抗震水准提高的改造工程中的应用 第十届全国再生混凝土学术交流会暨第六届全国建筑固废学术交流会论文集 . (2023) : 191-198 . |
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