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学者姓名：祁皑
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Abstract ：
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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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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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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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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Abstract ：
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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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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本实用新型公开可预制装配的多阶耗能自复位框架结构，涉及消能减震技术领域，包括两个立柱，两立柱相对的一侧顶部均固定安装有箱形连接块，两立柱之间设置有主梁，主梁的两端均固定安装有主梁端头，两主梁端头分别与两箱形连接块对应设置，对应设置的主梁端头与箱形连接块相对的一端均固定安装有摩擦组件，相对的两摩擦组件之间可拆卸安装有耗能组件，主梁的两端均固定安装有若干个梁预应力钢绞线，若干个梁预应力钢绞线分别贯穿两耗能组件并分别与两耗能组件滑动配合，且若干个梁预应力钢绞线的末端分别与两箱形连接块固定连接；本实用新型可以在地震时减小结构的残余变形，使结构实现良好的自复位效果。
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| GB/T 7714 | 祁皑 , 郑钿晓 , 李安铨 et al. 可预制装配的多阶耗能自复位框架结构 : CN202321467953.X[P]. | 2023-06-09 00:00:00 . |
| MLA | 祁皑 et al. "可预制装配的多阶耗能自复位框架结构" : CN202321467953.X. | 2023-06-09 00:00:00 . |
| APA | 祁皑 , 郑钿晓 , 李安铨 , 种迅 , 颜学渊 . 可预制装配的多阶耗能自复位框架结构 : CN202321467953.X. | 2023-06-09 00:00:00 . |
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