Mechanical Performance and Safety Evaluation of Connection Nodes in Prefabricated Assembled Structures
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Abstract
The long-term reliability of communication infrastructures, antenna supporting systems, and integrated engineering platforms in Electromagnetic Waves, Antennas and Propagation increasingly depends on the mechanical stability and safety of their structural connection components. To address the difficulty of quantitatively evaluating the stress behavior and safety performance of prefabricated assembled joints, this study proposes a comprehensive framework integrating structural parameter modeling, finite element analysis (FEA), mechanical performance extraction, and multi-index safety assessment. A three-dimensional numerical model is established to characterize stress distribution, deformation evolution, stiffness degradation, and failure mechanisms under combined loading conditions. Based on the simulated mechanical responses, ultimate bearing capacity, equivalent stiffness retention coefficient, and ductility coefficient are extracted and incorporated into a normalized weighted evaluation model to construct a comprehensive safety index for quantitative reliability assessment. Experimental results show that under C50 concrete, HRB500 reinforcement, and a sleeve length of 180 mm, the connection node achieves an ultimate bearing capacity of 356 kN, an equivalent stiffness retention coefficient of 0.82, a ductility coefficient of 3.59, and an overall safety index exceeding 0.90, demonstrating excellent structural performance. The proposed framework provides a robust methodology for structural reliability evaluation and engineering optimization of complex load-bearing systems, with potential applications in antenna supporting structures, communication infrastructure design, and mechanically integrated platforms associated with Electromagnetic Waves, Antennas and Propagation.
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References
X. Li, C. Wang, M. A. Kassem, H. H. Alhajlah, and S. Bimenyimana, “Evaluation method for quality risks of safety in prefabricated building construction using SEM-SDM approach,” International Journal of Environmental Research and Public Health, vol. 19, no. 9, pp. 5180-5187, 2022, doi: 10.3390/ijerph19095180.
X. Li, R. Chen, W. Chen, and C. Y. Jim, “Safety-risk assessment system for prefabricated building construction in China,” Engineering, Construction and Architectural Management, vol. 32, no. 12, pp. 8073-8096, 2025, doi: 10.1108/ECAM-03-2024-0287.
C. Yang, B. Xu, J. Xia, H. Chang, X. Chen, and R. Ma, “Mechanical behaviors of inter-module connections and assembled joints in modular steel buildings: a comprehensive review,” Buildings, vol. 13, no. 7, pp. 1727-1734, 2023, doi: 10.3390/buildings13071727.
R. Chang, N. Zhang, and Q. Gu, “A review on mechanical and structural performances of precast concrete buildings,” Buildings, vol. 13, no. 7, pp. 1575-1582, 2023, doi: 10.3390/buildings13071575.
Z. Zhu, F. Wu, and J. Hao, “Mechanical behavior of a novel precast concrete beam-column joint using the mortise-tenon connection,” Sustainability, vol. 15, no. 19, pp. 14586-14592, 2023, doi: 10.3390/su151914586.
M. Guan, J. Xiao, Y. Wang, Y. Zhang, Z. Liang, and Z. Lai, “Seismic behavior of innovative precast hybrid steel reinforced concrete beam-column connections,” Journal of Constructional Steel Research, vol. 203, no. 1, pp. 107817-107825, 2023, doi: 10.1016/j.jcsr.2023.107817.
G. Hu, Z. Zhang, B. Cao, Z. Pan, and L. Zeng, “Seismic behavior of precast concrete beam-column joints with bending moment-shear separation controllable plastic hinge,” Engineering Structures, vol. 304, no. 1, pp. 117585-117592, 2024, doi: 10.1016/j.engstruct.2024.117585.
R. Zhang, Y. Zhang, A. Li, and T. Y. Yang, “Experimental study on a new type of precast beam-column joint,” Journal of Building Engineering, vol. 51, no. 1, pp. 104252-104259, 2022, doi: 10.1016/j.jobe.2022.104252.
L. Chen, J. Feng, Y. Xue, and C. Liang, “Seismic behavior of an innovative prefabricated steel-concrete composite beam-column joint,” Journal of Building Engineering, vol. 76, no. 1, pp. 107211-107218, 2023, doi: 10.1016/j.jobe.2023.107211.
E. F. Deng, J. Y. Lian, Z. Zhang, H. Qian, G. C. Zhang, P. Zhang, et al., “Axial mechanical behavior of an innovative liftable connection for modular steel construction,” Thin-Walled Structures, vol. 182, pp. 110256-110262, 2023, doi: 10.1016/j.tws.2022.110256.
S. Xiao and N. I. Fomin, “Development and systematic review of connection techniques for RC Precast structural elements: Beam and Column Connection,” Heliyon, vol. 10, no. 16, Art. no. e35886-e35904, 2024, doi: 10.1016/j.heliyon.2024.e35886.
A. L. Zhang, X. D. Chen, Y. X. Zhang, X. Zhao, and W. Z. Huang, “Experimental and theoretical investigation of prefabricated separated core tube flange column connection joint,” Journal of Constructional Steel Research, vol. 201, no. 1, pp. 107694-107700, 2023, doi: 10.1016/j.jcsr.2022.107694.
X. Pang and Y. Li, “Seismic performance evaluation of precast post-tensioned high-performance concrete frame beam-column joint under cyclic loading,” Scientific Reports, vol. 14, no. 1, pp. 12327-12342, 2024, doi: 10.1038/s41598-024-63083-y.
Y. Helal, R. Garcia, T. Imjai, P. Aosai, M. Guadagnini, and K. Pilakoutas, “Seismic behaviour of Exterior RC beam-column joints repaired and strengthened using post-tensioned metal straps,” Bulletin of Earthquake Engineering, vol. 22, no. 6, pp. 3261-3286, 2024, doi: 10.1007/s10518-024-01904-1.
X. Hu, W. Xue, and Y. Lv, “Experimental studies on structural performance of precast concrete shear walls with innovative UHPC-based connections,” Journal of Building Engineering, vol. 73, no. 1, pp. 106748-106755, 2023, doi: 10.1016/j.jobe.2023.106748.
D. Kim and H. Ju, “Shear Strength Evaluation of Precast Concrete Beam-Column Joints Considering Key Influencing Parameters,” Sustainability, vol. 18, no. 1, pp. 468-475, 2026, doi: 10.3390/su18010468.
L. Chen, Z. Wang, B. Ma, G. Peng, C. Wang, and L. Zhou, “Seismic performance of a novel steel-concrete composite beam-column joint,” Journal of Constructional Steel Research, vol. 229, no. 1, pp. 109479-109486, 2025, doi: 10.1016/j.jcsr.2025.109479.
Y. Xiao, M. Yu, and W. Liu, “Finite Element Analysis of Prefabricated Semi-Rigid Concrete Beam-Column Joint with Steel Connections,” Applied Sciences, vol. 14, no. 12, pp. 5070-5077, 2024, doi: 10.3390/app14125070.
J. Zheng, Z. Pan, H. Zhen, X. Deng, C. Zheng, and Z. Qiu, “Experimental investigation on the seismic behavior of precast concrete beam-column joints with five-spiral stirrups,” Buildings, vol. 13, no. 9, pp. 2357-2364, 2023, doi: 10.3390/buildings13092357.
M. L. Zhuang, J. Cheng, D. Fei, C. Sun, Z. Wang, B. Chen, et al., “Numerical Simulation Study on the Seismic Performance of Prefabricated Fiber-Reinforced Concrete Beam-Column Joints With Grouted Sleeve Connections,” International Journal of Concrete Structures and Materials, vol. 18, no. 1, pp. 26-41, 2024, doi: 10.1186/s40069-024-00671-2.
M. Ebadi-Jamkhaneh, D. P. N. Kontoni, and A. H. Ebrahimi, “Assessment of different methods for enhancing progressive collapse resistance of irregular reinforced concrete buildings using pushdown analysis,” Arabian Journal for Science and Engineering, vol. 49, no. 10, pp. 13861-13883, 2024, doi: 10.1007/s13369-024-08847-4.
U. A. Noor, M. A. Jadoon, K. Onyelowe, A. Shahzad, K. Ghaedi, and H. Alabduljabbar, “Non-linear finite element analysis of SFRC beam-column joints under cyclic loading: enhancing ductility and structural integrity,” Scientific Reports, vol. 14, no. 1, pp. 18152-18183, 2024, doi: 10.1038/s41598-024-69270-1.
A. Hamoda, G. Elsamak, M. Emara, M. Ahmed, and Q. Q. Liang, “Experimental and numerical studies of reinforced concrete beam-to-steel column composite joints subjected to torsional moment,” Engineering Structures, vol. 275, no. 1, pp. 115219-115226, 2023, doi: 10.1016/j.engstruct.2022.115219.
L. Chen, X. Qiang, X. Jiang, and J. Bai, “Numerical study of steel-concrete composite beams strengthened by CFRP plates with prestressed unbonded reinforcement system,” Engineering Failure Analysis, vol. 157, no. 1, pp. 107905-107912, 2024, doi: 10.1016/j.engfailanal.2023.107905.
W. Mansour, M. Ghalla, W. Li, P. Wang, M. Badawi, and A. Albogami, “Evaluation of the axial compressive response of reinforced concrete brick columns externally wrapped with stainless steel sheets: experimental and numerical analysis,” Construction and Building Materials, vol. 490, no. 1, pp. 142501-142508, 2025, doi: 10.1016/j.conbuildmat.2025.142501.
Z. Wang, J. Zhao, X. Chen, S. Liu, and B. Ma, “Experimental investigation of seismic response of precast concrete panels with castellated keys support pillar connections under in-plane cyclic loading,” Scientific Reports, vol. 13, no. 1, pp. 21764-21785, 2023, doi: 10.1038/s41598-023-35386-z.
W. Yin, Y. Chang, and E. Xiong, “Research on the Mechanical Performance of Ultra-High Performance Concrete Reinforced Truss Precast Slabs during the Construction Phase,” International of Civil Engineering, vol. 24, no. 1, pp. 89-100, 2026, doi: 10.1007/s40999-025-01173-2.
M. D’Aniello, R. Montuori, E. Nastri, V. Piluso, and P. Todisco, “Parametric Finite Element Study on FREEDAM Beam to Column Joints with Different Details of the Haunch Slotted Holes,” Applied Sciences, vol. 14, no. 7, pp. 2770-2776, 2024, doi: 10.3390/app14072770.
W. Li, H. Ye, H. Liu, and B. Chen, “Development and testing of demountable RC column-to-steel beam connections under cyclic loading,” Soil Dynamics and Earthquake Engineering, vol. 159, no. 1, pp. 107342-107348, 2022, doi: 10.1016/j.soildyn.2022.107342.
C. Wang, R. Liu, X. Wang, et al., “Review of the Rearch on the Imapct Resistance Mechanical Performance of Prestressed Segmental Precast and Assembled Piers,” Structural Durability & Health Monitoring, pp. 1-10, 2025, doi: 10.32604/sdhm.2025.060580.
W. K. Hong, T. D. Pham, D. H. Nguyen, T. A. Le, M. C. Nguyen, and V. T. Nguyen, “Experimental and nonlinear finite element analysis for post-tensioned precast frames with mechanical joints,” Journal of Asian Architecture and Building Engineering, vol. 22, no. 5, pp. 2922-2945, 2023, doi: 10.1080/13467581.2023.2171733.
Z. Xiong, Y. Lin, Q. Wang, W. Yang, C. Shen, and J. Zhang, “Research on safety performance evaluation and improvement path of prefabricated building construction based on DEMATEL and NK,” Applied Sciences, vol. 14, no. 17, pp. 8010-8017, 2024, doi: 10.3390/app14178010.
M. Cai, H. Zhu, Q. Chen, T. Rabczuk, and X. Zhuang, “Mechanical behavior of ultra-high toughness concrete (UHTC) tunnel segmental joints,” Tunnelling and Underground Space Technology, vol. 151, no. 1, pp. 105838-105844, 2024, doi: 10.1016/j.tust.2024.105838.
Y. E. Kim, J. Park, Q. B. To, K. Lee, and J. Shin, “Finite element analysis-based blast performance evaluation for reinforced concrete columns with shear and flexure failure modes,” Sustainability, vol. 15, no. 20, pp. 14967-14974, 2023, doi: 10.3390/su152014967.
L. Q. Zheng, X. Y. Chen, C. G. Wei, and G. Y. Yan, “Seismic performance of prefabricated beam-to-column joint with replaceable energy-dissipating steel hinge,” Bulletin of Earthquake Engineering, vol. 20, no. 3, pp. 1865-1895, 2022, doi: 10.1007/s10518-021-01310-x.