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学者姓名：祁皑
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Abstract ：
为研究掺镍铁渣钢管再生混凝土柱抗冲击性能，以粗骨料替代率、轴压比、落锤质量及冲击能量为变化参数，设计并制作了11根圆钢管再生混凝土柱。通过落锤冲击试验，得到了试件的破坏形态、位移时程曲线及冲击力时程曲线，研究了轴压比、粗骨料取代率、冲击能量和落锤质量对钢管再生混凝土柱侧向冲击性能的影响。结果表明：钢管再生混凝土柱抗冲击性能良好，能量吸收率基本恒定在67%左右；与取代率为0%相比，再生粗骨料取代率为30%时，试件跨中挠度平均降低8.9%；再生粗骨料取代率为70%时，试件跨中挠度平均降低11.4%；随着冲击能量的增加，试件跨中残余位移显著增大；轴压比在0～0.4以内，轴向力对钢管再生混凝土抗冲击性能有提高作用；落锤质量由330 kg增加至430 kg，冲击持续时间增加16%；套箍系数增大，跨中挠度减小。
Keyword ：
再生块体混凝土 再生块体混凝土 冲击能量 冲击能量 时程曲线 时程曲线 落锤冲击 落锤冲击 轴压比 轴压比 钢管混凝土柱 钢管混凝土柱
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| GB/T 7714 | 罗才松 , 陈华艳 , 付朝江 et al. 圆钢管再生镍铁渣混凝土柱冲击性能试验 [J]. | 振动.测试与诊断 , 2024 , 44 (02) : 291-297,409-410 . |
| MLA | 罗才松 et al. "圆钢管再生镍铁渣混凝土柱冲击性能试验" . | 振动.测试与诊断 44 . 02 (2024) : 291-297,409-410 . |
| APA | 罗才松 , 陈华艳 , 付朝江 , 邓蜀鹏 , 祁皑 , 王碧珍 et al. 圆钢管再生镍铁渣混凝土柱冲击性能试验 . | 振动.测试与诊断 , 2024 , 44 (02) , 291-297,409-410 . |
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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. © 2024 by the authors.
Keyword ：
Design Design Earthquakes Earthquakes Optimal systems Optimal systems
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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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为了研究再生粗骨料取代率和偏心距对圆钢管再生镍铁渣混凝土柱力学性能的影响，设计了13个试件进行轴心和偏心受压试验，分析试件的荷载-跨中挠度曲线、侧向挠度曲线、刚度退化和耗能。在普通钢管混凝土的研究结果基础上，回归拟合适用于钢管再生混凝土的压弯承载力预测公式。结果表明：偏压试件的挠度沿柱高呈对称分布，形状符合正弦半波曲线；加载过程中截面中性轴的位置向受压区偏移，表明受压区面积逐渐缩小，受压区高度减小；当取代率超过30%后，随着再生粗骨料取代率的增加，试件的极限承载力降低，刚度逐渐退化，试件破坏时的耗能系数表现为降低的趋势；随着偏心距的增大，试件的极限承载力降低，侧向挠度曲线的包络面积逐渐增大，刚度逐渐退化；根据拟合的压弯承载力计算公式得到的计算值与试验结果吻合较好。
Keyword ：
偏压试验 偏压试验 刚度退化 刚度退化 承载力公式 承载力公式 耗能能力 耗能能力 钢管再生混凝土 钢管再生混凝土 镍铁渣 镍铁渣
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| GB/T 7714 | 罗才松 , 王枫轩 , 付朝江 et al. 圆钢管再生镍铁渣混凝土柱偏压力学性能研究 [J]. | 应用力学学报 , 2024 , 41 (03) : 546-556 . |
| MLA | 罗才松 et al. "圆钢管再生镍铁渣混凝土柱偏压力学性能研究" . | 应用力学学报 41 . 03 (2024) : 546-556 . |
| APA | 罗才松 , 王枫轩 , 付朝江 , 祁皑 . 圆钢管再生镍铁渣混凝土柱偏压力学性能研究 . | 应用力学学报 , 2024 , 41 (03) , 546-556 . |
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为研究钢管再生混凝土柱在冲击荷载作用下的损伤，进行了16根钢管再生混凝土柱的落锤冲击试验。在试验的基础上建立了钢管再生混凝土柱的有限元模型，分析不同冲击速度、冲击质量、截面含钢率对钢管再生混凝土柱损伤程度的影响。通过控制冲击质量与冲击速度，基于损伤因子d_s和弹塑性转角θ,划分损伤评估等级，拟合钢管再生混凝土柱损伤评估曲线。结果表明：建立的有限元模型能很好地吻合落锤冲击试验的结果，最大误差不超过10%;冲击过程中跨中挠度峰值出现时间远远滞后于冲击力峰值出现的时间，冲量是动量的1.23倍；随着冲击速度的增加，跨中挠度呈抛物线形的增长趋势，冲击质量增加对冲击力峰值影响较小，但对跨中挠度有较大影响，随着截面含钢率的增加，构件的耗能几乎稳定在90%附近；从损伤曲线图可以快速判断钢管再生混凝土柱的整体损伤情况及局部损伤情况。
Keyword ：
冲击能量 冲击能量 损伤评估 损伤评估 有限元模拟 有限元模拟 落锤冲击 落锤冲击 钢管再生混凝土柱 钢管再生混凝土柱
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| GB/T 7714 | 陈华艳 , 刘用滨 , 罗才松 et al. 冲击荷载作用下钢管再生混凝土柱损伤评估分析 [J]. | 振动与冲击 , 2024 , 43 (12) : 97-108 . |
| MLA | 陈华艳 et al. "冲击荷载作用下钢管再生混凝土柱损伤评估分析" . | 振动与冲击 43 . 12 (2024) : 97-108 . |
| APA | 陈华艳 , 刘用滨 , 罗才松 , 黄建忠 , 许力 , 付朝江 et al. 冲击荷载作用下钢管再生混凝土柱损伤评估分析 . | 振动与冲击 , 2024 , 43 (12) , 97-108 . |
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The safety and reliability of the double-deck variable-depth composite truss bridge (DDVD-CTB) during earthquakes can be ensured by a hybrid friction-based seismic isolation system (HFBSIS). However, the overturning effects on seismic performance of HFBSIS is a significant concern, as it can induce vertical actions of isolation bearings. In this study, a single-degree-of-freedom (SDOF) system was first employed to describe the isolation system with the consideration of overturning effects. Following the nondimensionalization of motion equation, it indicated that the ratio of total axial load variations of spherical bearings to deadweight of the girder (gamma) was a good indicator for the overturning effects on seismic performance. Then, the finite element (FE) model of SDOF system was developed and verified by the quasi-static cyclic test results. Finally, parametric sensitivity analyses were carried out to evaluate the degree of overturning effects on the seismic performance of the isolation system under different design parameters. Therefore, the maximum value gamma of was less than 5 x 10(-7) degree in the engineering practice. The nondimensionalization of motion equation considering overturning effects was approximately the same as that neglecting overturning effects, suggesting that overturning effects could be neglected when designing the HFBSIS in DDVD-CTB.
Keyword ：
Double-deck variable-depth composite truss bridge Double-deck variable-depth composite truss bridge Hybrid friction-based seismic isolation system Hybrid friction-based seismic isolation system Overturning effects Overturning effects Parametric sensitivity analysis Parametric sensitivity analysis SDOF system SDOF system Seismic performance Seismic performance
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| GB/T 7714 | Yang, Mianyue , Qi, Ai , Zhang, Jiayu . Overturning effects on seismic performance of the hybrid friction-based seismic isolation system [J]. | JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH , 2023 , 201 . |
| MLA | Yang, Mianyue et al. "Overturning effects on seismic performance of the hybrid friction-based seismic isolation system" . | JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH 201 (2023) . |
| APA | Yang, Mianyue , Qi, Ai , Zhang, Jiayu . Overturning effects on seismic performance of the hybrid friction-based seismic isolation system . | JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH , 2023 , 201 . |
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Currently, the shear pin connection (SPC) is a structural measure in the double spherical seismic isolation bearing (DSSIB). However, there is no unified design methodology for the SPC. In addition, the existing shear constitutive model is the linear elastic model (LEM). Its drawback is the inability to capture the gap in the bearing and the plasticity, damage, as well as fracture behavior of the SPC. Therefore, based on the performance requirements for two-level seismic fortification, a detailed design methodology for the SPC is proposed. With the SPC in the Fuzhou Daoqingzhou Bridge as a prototype, the finite element model of the SPC is developed in order to discuss the applicability of the LEM for predicating the shear behavior of SPC. The results showed that the fracture displacement and absorbed energy obtained by the finite element analysis were significantly larger than those predicted by the LEM. Then, to compensate the drawback of the LEM, a tri-linear model (TLM) is proposed as the modified shear constitutive model of the SPC. Finally, the effects of TLM and LEM of the SPC on seismic performance of the isolated bridge were investigated. Obviously, the maximum displacement of the bearing calculated by the TLM is up to 1.38 times that calculated by the LEM. This suggests that the TLM has accurate predictions of mechanical property of the SPC.
Keyword ：
Design methodology Design methodology Double spherical seismic isolation bearing Double spherical seismic isolation bearing Modified shear constitutive model Modified shear constitutive model Seismic performance Seismic performance Shear pin connection Shear pin connection
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| GB/T 7714 | Yang, Mianyue , Qi, Ai , Zhang, Jiayu et al. Design methodology and modified shear constitutive model of the shear pin connection [J]. | STRUCTURES , 2023 , 47 : 1225-1240 . |
| MLA | Yang, Mianyue et al. "Design methodology and modified shear constitutive model of the shear pin connection" . | STRUCTURES 47 (2023) : 1225-1240 . |
| APA | Yang, Mianyue , Qi, Ai , Zhang, Jiayu , Chen, Yongjian . Design methodology and modified shear constitutive model of the shear pin connection . | STRUCTURES , 2023 , 47 , 1225-1240 . |
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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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为了研究高层基础隔震结构的高阶效应及其控制方法，揭示了高层基础隔震结构的高阶效应机理。以实际工程为原型，进行了1/15比例的缩尺模型地震振动台试验，同时建立有限元模型，通过时程分析方法获得加速度与位移响应，并将分析结果与试验数据进行对比验证了有限元模型的有效性。研究结果表明：在一定条件下，高层基础隔震结构高位部分可能产生较明显的高阶效应，其响应突变层位置基本置于高位部分质量与结构总质量占比约为1/5处；8度罕遇地震作用下，结构顶部加速度放大系数超过2,响应突变层附近层间位移角超过1/100,该类型结构可能具有较大安全隐患；提出的基础隔震与TMD混合减震方案和基础与层间混合隔震方案均能有效的解决高层基础隔震结构的高阶效应，其中基础隔震与TMD混合减震方案振动控制效果能达50%左右；基础与层间混合隔震方案的最佳减震效果可接近50%。
Keyword ：
振动台试验 振动台试验 混合减震 混合减震 质量比 质量比 高层隔震结构 高层隔震结构 高阶效应 高阶效应
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| GB/T 7714 | 郑国琛 , 曹凌涛 , 吴应雄 et al. 考虑高阶效应的高层基础隔震结构振动与控制 [J]. | 建筑结构学报 , 2023 , 44 (09) : 93-103 . |
| MLA | 郑国琛 et al. "考虑高阶效应的高层基础隔震结构振动与控制" . | 建筑结构学报 44 . 09 (2023) : 93-103 . |
| APA | 郑国琛 , 曹凌涛 , 吴应雄 , 祁皑 , 许航莉 , 蒋国平 . 考虑高阶效应的高层基础隔震结构振动与控制 . | 建筑结构学报 , 2023 , 44 (09) , 93-103 . |
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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 [J]. | 福州大学学报(自然科学版) , 2023 , 51 (02) : 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" . | 福州大学学报(自然科学版) 51 . 02 (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 . | 福州大学学报(自然科学版) , 2023 , 51 (02) , 191-198 . |
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