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研究生： 溫永樂
Untaryo, Bryan Kristanto
論文名稱： 不同軸壓比下中空鋼管與鋼管混凝土柱火害後結構行為之比較研究
Comparative Study on Post-Fire Structural Behaviour of Steel and Concrete-Filled Steel Tube Columns under Different Axial Load Ratio
指導教授： 賴啟銘
Lai, Chi-Ming
共同指導: 張惠雲
Chang, Heui-Yung
學位類別： 碩士
Master
系所名稱： 工學院 - 土木工程學系
Department of Civil Engineering
論文出版年： 2026
畢業學年度： 114
語文別： 英文
論文頁數： 158
中文關鍵詞： 火害後行為 、混凝土填充鋼管柱 、軸向載重比 、循環載重 、遲滯反應
外文關鍵詞： post-fire behaviour, CFST column, axial load ratio, cyclic loading, hysteresis response.
相關次數： 點閱：3  下載：0 
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    • 本研究評估空心鋼管柱與混凝土填充鋼管（concrete-filled steel tubular, CFST）柱在火害後承受循環載重及不同軸向壓力條件下之結構反應。研究使用 ANSYS 有限元素模擬分析五組模型，包含 S19、S16、SC19、SC16 及 SC12。分析流程首先進行時間相依之熱傳分析，以模擬單側受熱情況，並將所得溫度分布匯入結構模型中進行循環側向載重分析。結果顯示，混凝土填充可顯著提升柱構件之火害後結構性能。在 0.3Pn 軸向載重下，SC19 之最大彎矩達 8655 kN·m，而 S19 僅達 3229 kN·m。空心鋼管試體呈現較有限之層間變位能力，並較早發生局部挫屈；相較之下，CFST 試體可在 4% 層間變位角下維持穩定之遲滯反應。軸向載重比較結果亦顯示，隨著軸向載重增加，S19 之穩定性明顯降低；而 SC19 在 0.1Pn、0.3Pn 及 0.5Pn 條件下皆能維持整體穩定。然而，SC19 在 0.5Pn 條件下產生較高之局部塑性應變。整體而言，混凝土填充可提升強度、延緩局部挫屈，並改善火害後之循環穩定性。然而，高軸向壓力仍可能增加局部損傷。因此，火害後性能評估應同時考量整體遲滯反應與局部塑性應變分布。

    This research evaluates the structural response of hollow and concrete-filled steel tubular (CFST) columns subjected to cyclic loading after fire exposure under various levels of axial compression. Finite element simulations using ANSYS were performed on five specific models: S19, S16, SC19, SC16, and SC12. Initially, a time-dependent thermal simulation was conducted to represent one-sided heating. The resulting temperature distribution was then applied to the structural model for cyclic lateral loading. The results show that concrete infill significantly improves post-fire performance. Under 0.3Pn, SC19 reached a maximum moment of 8655 kN·m, while S19 reached only 3229 kN·m. The hollow steel specimens showed limited drift capacity and early local buckling. In contrast, the CFST specimens maintained stable hysteresis responses up to 4% drift. The axial load comparison also showed that S19 became less stable as axial load increased, while SC19 maintained global stability at 0.1Pn, 0.3Pn, and 0.5Pn. However, SC19 at 0.5Pn developed high local plastic strain. Overall, concrete infill improves strength, delays local buckling, and enhances cyclic stability after fire exposure. However, high axial compression can still increase local damage. Therefore, post-fire evaluation should consider both global hysteresis response and localized plastic strain.

    摘要 ii ABSTRACT iii ACKNOWLEDGEMENT iv LIST OF TABLES viii LIST OF FIGURES ix LIST OF SYMBOLS xii CHAPTER I INTRODUCTION 1 1.1 Background 1 1.2 Research Objectives 2 1.3 Research Methodology 3 1.4 Thesis Structure 3 1.5 Limitation of Study 4 CHAPTER II LITERATURE REVIEW 6 2.1 General Behaviour of CFST Columns 6 2.2 Cyclic Loading Behaviour and Protocols 7 2.3 Finite Element Method (FEM) and ANSYS Modelling 8 2.4 Mechanical Properties of Materials at Elevated Temperature 9 2.5 Effect of Temperature on CFST Structural Behaviour 10 2.6 Specific Heat 16 2.6.1 Thermal Conductivity Coefficient 18 2.6.2 Steel-Concrete Contact Behaviour 21 CHAPTER III METHODOLOGY 24 3.1 Finite Element Modelling 24 3.2 Static Structural and Transient Thermal Analysis 25 3.3 Behaviour Indicators 25 3.3.1 Von Mises Stress 26 3.3.2 Equivalent Plastic Strain (PEEQ) 26 3.3.3 Stress Triaxiality, ST 27 3.4 Geometry Model 28 3.5 Material Nonlinearity 31 3.5.1 BCP 325 31 3.5.2 Concrete 33 3.6 Boundary Condition 34 3.6.1 Mesh 34 3.6.2 Contact Settings 36 3.6.3 Boundary Conditions and Loading Protocol 39 3.6.4 Heating Mode 42 CHAPTER IV RESULTS AND DISCUSSIONS 47 4.1 Introduction 47 4.2 Design Specifications 47 4.3 Width to Thickness Ratio Limits 47 4.3.1 AISC 341-22 48 4.3.2 AISC 360-22 49 4.3.3 Section Classification Based on Width to Thickness Ratio 49 4.4 Design Axial Strength 53 4.4.1 Yield Strength 53 4.4.2 Buckling Strength 54 4.4.3 Nominal Axial Strength 54 4.5 Nominal Flexural Strength 55 4.5.1 Hollow Steel Column 55 4.5.2 Concrete-Filled Steel Tube (CFST) Column 58 4.6 Axial Force-Moment Interaction 59 4.6.1 Hollow Steel Columns 59 4.6.2 Concrete-Filled Steel Tube (CFST) Column 60 4.7 Mesh Evaluation 61 4.7.1 Aspect ratio 62 4.7.2 Element Quality 63 4.7.3 Warping Factor 65 4.8 Case Model 67 4.8.1 Case 1 Reference Models (0.3Pn) 67 4.8.2 Case 2 Effect of Reduced Axial Load (0.1Pn) 76 4.8.3 Case 3 Effect of Increased Axial Load (0.5Pn) 80 4.9 Comparison and Discussion 84 4.9.1 Comparative Analysis of Axial Load Ratios in Model S19 84 4.9.2 Comparative Analysis of Axial Load Ratios in Model SC19 86 4.9.3 Axial Load Effect Based on P-M Interaction 89 CHAPTER V CONCLUSION AND SUGGESTIONS 138 5.1 Conclusion 138 5.2 Suggestions 140 REFERENCES 142

    Liu, J., Yu, W., Fang, Y., & Pan, Z. (2024). Experimental study on the seismic performance of concrete-filled steel tube columns with a multiple-chamber round-ended cross-section. Frontiers in Materials.
    Xu, D., Chen, Z., & Zhou, C. (2020). Seismic performance of recycled concrete filled circular steel tube columns.
    Fan, X., Lyu, F., Fan, J., & Ding, F. (2023). Prediction of axial compressive load–strain curves of circular concrete-filled steel tube columns using long short-term memory network.
    Liew, J. Y. R., & Xiong, M. X. (2015). Design guide for concrete-filled tubular members. Journal of Constructional Steel Research.
    Ilanthalir, A., Jerlin Regin, J., & Maheswaran, J. (2020). Concrete-filled steel tube columns of different cross-sectional shapes under axial compression: A review. IOP Conference Series: Materials Science and Engineering.
    Ganijzadeh, A., Dolatshahi, K. M., & Hamidia, M. (2026). Data-driven clustering of quasi-static cyclic loading protocols: Application to steel beam-to-column connections. Engineering Structures.
    Alebrahim, R., Thamburaja, P., Srinivasa, A., & Reddy, J. N. (2026). A robust pseudoinverse-based 3D finite-element solver constructed using LU decomposition for fracture simulations.
    Sakr, M. A., Seleemah, A. A., Kharoob, O. F., & Aboelnour, M. M. (2024). Numerical modelling of steel fiber reinforced recycled concrete filled steel tube column under cyclic loading. Electronic Journal of Structural Engineering.
    Tang, J., Ma, W., Gu, Z., Zhang, Y., Fang, D., & Zhao, L. (2023). Study on mechanical properties and microstructure of aluminate cement-based materials incorporating recycled brick powder after exposure to elevated temperatures. Journal of Building Engineering.
    Tang, H., Zhu, J., Xiao, W., & Ba, G. (2025). Stress–strain relationship for steel bars at elevated temperatures. Buildings, 15(24), 4475.
    AISC. (2022a). Seismic provisions for structural steel buildings. ANSI/AISC 341 22. American Institute of Steel Construction, Chicago, Illinois.
    AISC. (2022b). Specification for structural steel buildings. ANSI/AISC 360-22. American Institute of Steel Construction, Chicago, Illinois.
    American Institute of Steel Construction. (2016). Seismic provisions for structural steel buildings (ANSI/AISC 341-16). American Institute of Steel Construction.ANSYS, ANSYS Contact Technology Guide. SAS, 2007.
    ASCE, Structural fire protection. 1992.
    Tu, C., Shi, Y., Chen, K., Wang, W., & Ban, H. (2023). Cyclic loading tests and numerical modelling of concrete-filled 700 MPa high-strength steel tubes incorporating deep plasticity. Thin-Walled Structures, 191, 110991.
    Xia, H. J., Basha, S. H., Hu, H. S., & Yang, Z. J. (2024). Behaviour of circular ultra-high-strength concrete-filled steel tube columns subjected to combined high-axial and cyclic lateral loads. Journal of Building Engineering, 96, 110442.
    Mao, W. J., Wang, W. D., Zhou, K., & Du, E. F. (2021). Experimental study on steel-reinforced concrete-filled steel tubular columns under the fire. Journal of Constructional Steel Research, 185, 106867.
    Hu, H. S., Chen, Z. X., Wang, H. Z., & Guo, Z. X. (2022). Seismic behaviour of square spiral-confined high-strength concrete-filled steel tube columns under high axial load ratio. Engineering Structures, 250, 113600.
    Wang, S., Wang, W., & Xie, Z. (2023). Nonlinear cyclic behaviour of steel tube in concrete-filled steel tube members including local buckling. Thin-Walled Structures, 191, 111055.
    Romero, M. L., Espinos, A., Portoles, J. M., Hospitaler, A., & Ibañez, C. (2013). Heat transfer in concrete-filled carbon and stainless-steel tubes exposed to fire. Fire Safety Journal, 61, 1-11.
    Guo et al. (2021). Experimental investigation on hysteretic behaviour of circular hollow steel tubular columns after lateral impacts. Engineering Structures, 232, 111861.
    Tao, Z., Song, T. Y., Uy, B., & Han, L. H. (2016). Bond behaviour in concrete-filled steel tubes. Journal of Constructional Steel Research, 120, 81-93.
    Mukherjee, N., Makem, J. E., & Fogg, H. J. (2016). A 3D constrained optimization smoother to post-process quadrilateral meshes for body-in-white. Procedia Engineering, 163, 262-275.
    Architecture and Building Research Institute, Ministry of the Interior. (2021). 鋼構造建築物鋼結構設計技術規範之修正研擬. Ministry of the Interior, Taiwan.

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