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学者姓名：陈誉
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基于落锤冲击试验和数值模拟研究了侧向冲击下圆形双钢管混凝土(concrete-filled double-tube,CFDT)柱的损伤模式;以弯矩-转角关系作为评估指标,建立了圆形CFDT柱的冲击质量-冲击速度、冲击能量-冲击质量损伤评估模型;讨论了冲击位置、外钢管强度、内钢管径厚比和轴压比等参数对损伤评估模型的影响规律.结果表明:在冲击能量不变的情况下,圆形CFDT柱的损伤程度随冲击质量与冲击速度比值的增大而显著增加.圆形CFDT柱的临界冲击能量曲线随冲击质量的增大逐渐下降后趋于平缓,收敛于水平渐近线;不同损伤程度对应的临界冲击能量间存在显著差别.当冲击质量恒定时,增大内钢管径厚比、外钢管强度以及冲击点距自由端距离,可以提高圆形CFDT柱的临界冲击能量;增大轴压比则会使临界冲击能量呈先增大后减小的趋势.各参数对临界冲击质量的影响随着冲击速度的增大而减小,其中外钢管强度对损伤评估模型的影响最大,轴压比和冲击位置次之,内钢管径厚比的影响最小.
Keyword ：
冲击性能 冲击性能 圆形双钢管混凝土(CFDT)柱 圆形双钢管混凝土(CFDT)柱 弯矩-转角关系 弯矩-转角关系 损伤评估模型 损伤评估模型 有限元分析 有限元分析
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| GB/T 7714 | 阳霞 , 王久元 , 吴杰 et al. 侧向冲击作用下圆形双钢管混凝土柱损伤评估模型研究 [J]. | 振动与冲击 , 2025 , 44 (2) : 21-29 . |
| MLA | 阳霞 et al. "侧向冲击作用下圆形双钢管混凝土柱损伤评估模型研究" . | 振动与冲击 44 . 2 (2025) : 21-29 . |
| APA | 阳霞 , 王久元 , 吴杰 , 陈誉 , 陈娟 . 侧向冲击作用下圆形双钢管混凝土柱损伤评估模型研究 . | 振动与冲击 , 2025 , 44 (2) , 21-29 . |
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As one of the regions with frequent engineering construction and frequent geological disasters, the alpine gorge area of the Qinghai-Xizang Plateau is of great significance for its environmental risk assessment. This paper takes Chaya County in the region as the research object, combined with the essential data survey, using remote sensing images and a geographic information system (GIS) platform to carry out spatial statistics and analyze common geological disasters in the study area. Based on this, the SMOTE-Tomek-random forest (STRF) geological disaster evaluation model and the information method model were used to explore the impact of engineering construction on the susceptibility and vulnerability of geological disasters in the Alpine Canyon area. The results show that small geological disasters are mainly distributed in the study area, accounting for 67.95%; the vulnerability zoning of geological disasters in the study area is mainly low vulnerability area and low vulnerability area. Among them, the high vulnerability area accounts for 3.2%, and the high vulnerability area accounts for 9.86%. From the perspective of administrative regions, the vulnerability values of Yanduo Town, Xiangdui Town, and Jitang Town are higher, which is consistent with the distribution law regarding hidden danger points of geological disasters. Based on the STRF susceptibility model and the traditional random forest susceptibility model, the AUC values are all above 0.9. In the test set and training set, the accuracy of the STRF model is slightly reduced. However, the interpretability of the address disaster model in the Alpine Gorge area is enhanced. The region's susceptibility area is the highest, accounting for 50.59, 46.96, and 38.74%, respectively. The project's construction has increased the geological disaster-prone areas in the study area by 183.21 and 38.9 km2, respectively. The results show that the STRF model is feasible in assessing geological disaster susceptibility in the Alpine Canyon area.
Keyword ：
Alpine and canyon areas Alpine and canyon areas Engineering construction Engineering construction Geological hazards Geological hazards GIS GIS SMOTE-Tomek-RF SMOTE-Tomek-RF Susceptibility assessment Susceptibility assessment Vulnerability assessment Vulnerability assessment
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| GB/T 7714 | Fei, Zheng , Zhang, Xin , Liu, Guichuan et al. Study on the impact of engineering construction on environmental risk assessment in alpine canyon area: a case study of Chaya County, Xizang [J]. | SCIENTIFIC REPORTS , 2025 , 15 (1) . |
| MLA | Fei, Zheng et al. "Study on the impact of engineering construction on environmental risk assessment in alpine canyon area: a case study of Chaya County, Xizang" . | SCIENTIFIC REPORTS 15 . 1 (2025) . |
| APA | Fei, Zheng , Zhang, Xin , Liu, Guichuan , Xu, Huihong , Chen, Yu , Liu, Baoxian et al. Study on the impact of engineering construction on environmental risk assessment in alpine canyon area: a case study of Chaya County, Xizang . | SCIENTIFIC REPORTS , 2025 , 15 (1) . |
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Damage modes of concrete-filled double-tube (CFDT) columns under lateral impact were studied by drop impact tests and numerical simulations. Using the moment-rotation relationship as the assessment indicator, the velocity-mass and mass-energy damage evaluation models for CFDT columns were established. The influences of the parameters including the impact position, external steel tube strength, diameter-thickness ratio of internal steel tube and axial compression ratio on the damage evaluation models were discussed. The results show that under constant impact energy, the damage degree of the CFDT columns increases remarkably as the ratio of impact mass to impact velocity increases. The critical impact energies at different damage degrees are significantly different. As the impact mass remains constant, the critical impact energy increases with the increase of the internal steel tube diameter-thickness ratio, external steel tube strength and distance from free-end to impact point, while it increases first and then reduces with increasing of the axial compression ratio. The influences of these parameters on critical impact mass decrease with the increase of impact velocity. Among them, the external steel tube strength has the greatest influence on the damage evaluation model, the axial compression ratio and the impact position take the second place, and the influence of the internal steel tube diameter-thickness ratio is the least. © 2025 Chinese Vibration Engineering Society. All rights reserved.
Keyword ：
Columns (structural) Columns (structural) Compressive strength Compressive strength Pressure vessels Pressure vessels Tubular steel structures Tubular steel structures
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| GB/T 7714 | Yang, Xia , Wang, Jiuyuan , Wu, Jie et al. Study on evaluation model of circular concrete-filled double tube columns under lateral impact [J]. | Journal of Vibration and Shock , 2025 , 44 (2) : 21-29 . |
| MLA | Yang, Xia et al. "Study on evaluation model of circular concrete-filled double tube columns under lateral impact" . | Journal of Vibration and Shock 44 . 2 (2025) : 21-29 . |
| APA | Yang, Xia , Wang, Jiuyuan , Wu, Jie , Chen, Yu , Chen, Juan . Study on evaluation model of circular concrete-filled double tube columns under lateral impact . | Journal of Vibration and Shock , 2025 , 44 (2) , 21-29 . |
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This study investigates the post-fire axial compression behavior of concrete-filled stainless steel tube (CFSST) stub columns, aiming to inform strategies for strengthening and retrofitting fire-damaged CFSST structures. The paper reviews the mechanical properties and fire resistance of CFSST, presenting results from a series of fire and axial compression tests conducted on 69 circular CFSST stub columns. Key parameters included fire exposure conditions, stainless steel tube wall thickness, concrete strength, and cooling methods. The analysis includes the failure mode, load-deformation relationship, ultimate bearing capacity, initial compressive stiffness, and ductility of specimens post-fire. The primary post-fire axial compression failure mode of the specimens was characterized by localized buckling uniformly distributed along the vertical axis. For fire durations of 60 min or less, the ultimate bearing capacity of the specimens was largely restored after cooling, with a bearing capacity loss of less than 10 %. Specimens subjected to water cooling exhibited lower initial compressive stiffness and ultimate bearing capacity compared to those cooled by air. Lastly, a formula is proposed for predicting the ultimate bearing capacity of CFSST stub columns following exposure to ISO 834 standard fire conditions.
Keyword ：
CFSST CFSST Compressive behavior Compressive behavior Failure modes Failure modes Post-fire Post-fire Ultimate bearing capacity Ultimate bearing capacity
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| GB/T 7714 | He, Kang , He, Yaohui , Li, Xin et al. Compressive behavior of concrete-filled stainless steel tube stub columns post-fire [J]. | JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH , 2025 , 226 . |
| MLA | He, Kang et al. "Compressive behavior of concrete-filled stainless steel tube stub columns post-fire" . | JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH 226 (2025) . |
| APA | He, Kang , He, Yaohui , Li, Xin , Chen, Yu . Compressive behavior of concrete-filled stainless steel tube stub columns post-fire . | JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH , 2025 , 226 . |
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Ultra-high-performance concrete structures play an essential role in global infrastructure development. The structural behaviors of ultra-high-performance concrete (UHPC) structures may be substantially different under multi-hazard conditions, including impact loading. The dynamic response of UHPC beams under an impact load is studied experimentally and numerically in this research. Five UHPC beams were fabricated for the test and divided into mass and velocity groups to examine the effect of different impact energies as well as different drop hammer masses and impact velocities at the same impact energy on the dynamic response of UHPC beams. According to the test results, all specimens exhibit flexural damage. The characteristic values of impulse, impact duration, maximum displacement, residual displacement, and absorbed energy all increase gradually with the impact energy. Under the same impact energy increase, the growth rate of each characteristic value of the mass group is greater than that of the velocity group. The impact energy change has little effect on the plateau impact force and the energy absorption rate. The finite element software ABAQUS was used to simulate the impact test, and the accuracy of the simulation was verified with the test results. Finally, the effects of various parameters on the dynamic response and residual flexural bearing capacity of UHPC beams were investigated through parametric studies. A parametric formulation of the flexural bearing capacity degradation coefficient D f is proposed.
Keyword ：
Beam Beam Dynamic response Dynamic response Flexural bearing capacity Flexural bearing capacity Impact energy Impact energy Impact load Impact load Ultra-high-performance concrete Ultra-high-performance concrete
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| GB/T 7714 | Xing, Zhiquan , Su, Zezhou , Liu, Qingan et al. Dynamic behavior of ultra-high performance concrete beams under different impact behaviors [J]. | STRUCTURES , 2025 , 71 . |
| MLA | Xing, Zhiquan et al. "Dynamic behavior of ultra-high performance concrete beams under different impact behaviors" . | STRUCTURES 71 (2025) . |
| APA | Xing, Zhiquan , Su, Zezhou , Liu, Qingan , Wang, Zongcheng , Chen, Jinbiao , Chen, Yu et al. Dynamic behavior of ultra-high performance concrete beams under different impact behaviors . | STRUCTURES , 2025 , 71 . |
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High-strength reinforcement is characterized with excellent strength and ductility, and when combined with ultra-high-performance fiber-reinforced concrete (UHPFRC), it leverages the strengths of both materials. To study the dynamic response of high-strength reinforced UHPFRC(HSR-UHPFRC) beams under impact loading, this work integrates drop-weight impact testing with ABAQUS numerical simulations to examine the effects of longitudinal reinforcement ratio, stirrup ratio, impact mass, impact velocity and shear span-to-depth ratio. The research findings indicate that under impact loading, HSR-UHPFRC beams primarily experience flexural failure. When the reinforcement ratio increases from 1. 15% to 1. 53%, the energy absorption efficiency drops by about 10%. Use of stirrups can effectively reduce the deflection of the beam without altering its failure mode. Under the equivalent impact energy, the impact mass has a more pronounced effect on the damage of beam. Elastoplastic rotation damage assessments suggest that increasing the longitudinal reinforcement ratio and reducing the shear span-to-depth ratio can effectively mitigate the damage of beam under impact loading. When the longitudinal reinforcement ratio is less than 1. 15%, a design without stirrups can be adopted. When it exceeds 1. 5%, however, it is recommended that stirrups shall be provided to prevent brittle failure of beam under impact loading. © 2025 Chinese Society of Civil Engineering. All rights reserved.
Keyword ：
ABAQUS ABAQUS Fiber reinforced concrete Fiber reinforced concrete Fiber reinforced plastics Fiber reinforced plastics Ultra-high performance concrete Ultra-high performance concrete
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| GB/T 7714 | Xing, Zhiquan , Zhang, Weiwei , Nie, Renjie et al. Study on the dynamic response of high⁃strength reinforced UH⁃ PFRC beams under impact loading [J]. | China Civil Engineering Journal , 2025 , 58 (5) : 27-40 . |
| MLA | Xing, Zhiquan et al. "Study on the dynamic response of high⁃strength reinforced UH⁃ PFRC beams under impact loading" . | China Civil Engineering Journal 58 . 5 (2025) : 27-40 . |
| APA | Xing, Zhiquan , Zhang, Weiwei , Nie, Renjie , Wang, Zongcheng , Huang, Zhoufeng , Sun, Shiyuan et al. Study on the dynamic response of high⁃strength reinforced UH⁃ PFRC beams under impact loading . | China Civil Engineering Journal , 2025 , 58 (5) , 27-40 . |
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Steel frame structures repaired after fire exposure exhibit markedly different collapse behavior, compared to their performance under ambient conditions, when subjected to extreme loads. This study investigates the progressive collapse resistance of steel frame structures with reduced beam section (RBS) connections in post-fire conditions, using ten beam-column substructures: one tested at room temperature and nine exposed to various fire conditions. Results show that fire exposure shifts the failure from the RBS to the beam-column connection, significantly impairing the RBS's ability to relocate the plastic hinge, especially at higher fire temperatures. Fire temperature significantly affects collapse resistance, especially above 600 degrees C, whereas fire duration has a comparatively smaller influence on deformation capacity, particularly at 800 degrees C. Elevated temperatures weaken tensile catenary action (TCA), with substructures exposed to 800 degrees C for 90 min failing to transition to the TCAdominated stage. Numerical simulations show that for substructures exposed to 400 degrees C and 600 degrees C, collapse resistance increases with greater flange reduction length, while the relationship between collapse resistance and starting reduction distance follows a rise-and-fall pattern. At 800 degrees C, collapse resistance remains relatively consistent across different starting reduction distances, but increasing the reduction length initially enhances and then reduces resistance. Increasing the reduction depth to 30 mm significantly reduces both the flexural and tensile capacities of the RBS region, shifting the failure mode from the beam-column connection to the RBS region.
Keyword ：
Flange reduced parameters Flange reduced parameters Post-fire conditions Post-fire conditions Progressive collapse Progressive collapse Reduced beam section (RBS) Reduced beam section (RBS) Steel frame structure Steel frame structure
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| GB/T 7714 | Zhang, Weiwei , Xu, Zhijun , Xu, Haolong et al. Post-fire progressive collapse resistance of beam-column substructures with RBS connections [J]. | JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH , 2025 , 224 . |
| MLA | Zhang, Weiwei et al. "Post-fire progressive collapse resistance of beam-column substructures with RBS connections" . | JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH 224 (2025) . |
| APA | Zhang, Weiwei , Xu, Zhijun , Xu, Haolong , Zhang, Wanpeng , Wang, Zongcheng , Chen, Yu . Post-fire progressive collapse resistance of beam-column substructures with RBS connections . | JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH , 2025 , 224 . |
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3-mercaptopropyltriethoxysilane (KH580) surface organic layered double hydroxides (LDHs) was synthesized to simultaneously bolster the anti-ageing property of SBS copolymer modified bitumen (SMB). The X-ray diffraction and X-ray photoelectron spectroscopy proved that the KH580 was successfully grafted on the surface of LDHs (KH-LDHs). After KH580 surface organic modification, the aggregation and hydrophilicity of LDHs were significantly restrained, and the UV absorbing capacity was concurrently enhanced. Compared with LDHs, KHLDHs exhibited superior compatibility within SMB and could improve the high-temperature performance and elastic behavior of SMB much better. After ageing, SMB became stiff and crisp, the rheological properties worsened, and the number of oxygen-containing groups (C--O and S--O) in SMB experienced a considerable rise. Simultaneously, SBS copolymer also degraded during the ageing process, further deteriorating the performance of SMB. LDHs was able to inhibit the ageing repercussions on the rheological properties, chemical structure and SBS copolymer, thus bolstering both the anti-ageing property of SMB and the degradation resistance of SBS copolymer. Furthermore, the role of LDHs would be dramatically strengthened by KH580 surface organic modification.
Keyword ：
Anti-ageing property Anti-ageing property Bitumen Bitumen Degradation resistance Degradation resistance Layered double hydroxides Layered double hydroxides SBS copolymer SBS copolymer Surface organic modification Surface organic modification
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| GB/T 7714 | Dong, Hongjun , Zhang, Canlin , Weng, Yiwei et al. Investigating the anti-ageing property of SBS copolymer modified bitumen incorporating surface organic layered double hydroxides [J]. | CONSTRUCTION AND BUILDING MATERIALS , 2025 , 463 . |
| MLA | Dong, Hongjun et al. "Investigating the anti-ageing property of SBS copolymer modified bitumen incorporating surface organic layered double hydroxides" . | CONSTRUCTION AND BUILDING MATERIALS 463 (2025) . |
| APA | Dong, Hongjun , Zhang, Canlin , Weng, Yiwei , Wang, Ting , Yang, Shuai , Ma, Shijie et al. Investigating the anti-ageing property of SBS copolymer modified bitumen incorporating surface organic layered double hydroxides . | CONSTRUCTION AND BUILDING MATERIALS , 2025 , 463 . |
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The impact performance of ultra-high-performance fiber-reinforced concrete (UHPFRC) beams under impact loading is studied experimentally and numerically in this research. Ten UHPFRC beams were fabricated for the test to examine the effects of impact energy and reinforcement configuration on the cracking patterns and dynamic response of UHPFRC beams. According to the test results, all specimens exhibited flexural-brittle failure. The characteristic values of impulse, impact duration, maximum displacement, residual displacement, and absorbed energy all increased gradually with the impact energy. The longitudinal reinforcement ratio decreased, the maximum width and height of the bending main crack gradually increased. The specimen equipped with double-layer tensile longitudinal bars could better limit the development of cracks in the specimen. The effect of stirrups ratio on dynamic response of UHPFRC beams was limited. Finite element software ABAQUS was used to simulate the impact test, and the accuracy of the simulation was verified with the test results. The effects of various parameters on the dynamic responses of UHPFRC beams were further investigated through parametric studies. Genetic algorithms were utilized to predict the parameter values of UHPFRC beams under the most unfavorable impact resistance state. These findings inform structural and strengthening design for UHPFRC beams under impact loading.
Keyword ：
Dynamic response Dynamic response Impact energy Impact energy Impact load Impact load UHPFRC beam UHPFRC beam Unfavorable state Unfavorable state
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| GB/T 7714 | Zhu, Yao , Liu, Qingan , Zhang, Xiaoyong et al. Experimental and numerical investigations of UHPFRC beams under impact loading [J]. | STRUCTURES , 2025 , 74 . |
| MLA | Zhu, Yao et al. "Experimental and numerical investigations of UHPFRC beams under impact loading" . | STRUCTURES 74 (2025) . |
| APA | Zhu, Yao , Liu, Qingan , Zhang, Xiaoyong , Xing, Zhiquan , Zhang, Wanpeng , Chen, Yu et al. Experimental and numerical investigations of UHPFRC beams under impact loading . | STRUCTURES , 2025 , 74 . |
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Aluminum alloy axial compression members are extensively utilized in engineering involving long-span space structures, owing to their lightweight and high-strength properties. To facilitate assembly or allow for the passage of pipelines, wires, and other installations, it is necessary to create cross openings in the columns. This study investigates the buckling behavior of square hollow section (SHS) aluminum alloy slender columns with cross openings under axial compression load. Through an axial compression test involving 21 members, buckling failure characteristics, load-carrying capacity, and development of displacement and strain are analyzed. The findings reveal the effects of opening diameter, opening number, and column slenderness on the axially compressed properties. The finite element method is further utilized to conduct the extensive parameter analysis involving 60 column models, complementing the experimental findings and elucidating the correlation between failure modes and the influence of opening parameters on column strength. For members characterized by local buckling, increasing the cross-section opening ratio significantly reduces the load-carrying capacity. For members characteristic of global-local coupling buckling, reducing the opening spacing has a more considerable adverse impact. The load-carrying capacity is predicted using two methods: nonlinear regression and BP artificial neural network based on k-fold cross-validation. The prediction results demonstrate minor errors and discretization, providing a valuable reference for the application and advancement of aluminum alloy members in engineering.
Keyword ：
Aluminum alloy member Aluminum alloy member Axial compression load Axial compression load Buckling behavior Buckling behavior Cross opening Cross opening Square hollow section Square hollow section
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| GB/T 7714 | Kong, Wenyuan , Li, Zhihui , Yang, Hang et al. Stability analysis of square hollow section aluminum alloy slender columns with cross openings [J]. | STRUCTURES , 2025 , 72 . |
| MLA | Kong, Wenyuan et al. "Stability analysis of square hollow section aluminum alloy slender columns with cross openings" . | STRUCTURES 72 (2025) . |
| APA | Kong, Wenyuan , Li, Zhihui , Yang, Hang , Wang, Zongcheng , Chen, Yu , Guo, Zhan et al. Stability analysis of square hollow section aluminum alloy slender columns with cross openings . | STRUCTURES , 2025 , 72 . |
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