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Автор: Grafiati
Опубліковано: 10 грудня 2022
Оновлено: 28 січня 2023

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1

PATEL, VIPULKUMAR ISHVARBHAI, QING QUAN LIANG, and MUHAMMAD N. S. HADI. "NUMERICAL ANALYSIS OF CIRCULAR CONCRETE-FILLED STEEL TUBULAR SLENDER BEAM-COLUMNS WITH PRELOAD EFFECTS." International Journal of Structural Stability and Dynamics 13, no. 03 (April 2013): 1250065. http://dx.doi.org/10.1142/s0219455412500654.

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Анотація:
This paper presents a new numerical model for the nonlinear analysis of circular concrete-filled steel tubular (CFST) slender beam-columns with preload effects, in which the initial geometric imperfections, deflections caused by preloads, concrete confinement and second order effects are incorporated. Computational algorithms are developed to solve the nonlinear equilibrium equations. Comparative studies are undertaken to validate the accuracy of computational algorithms developed. Also included is a parametric study for examining the effects of the preloads, column slenderness, diameter-to-thickness ratio, loading eccentricity, steel yield stress and concrete confinement on the behavior of circular CFST slender beam-columns under eccentric loadings. The numerical model is demonstrated to be capable of predicting accurately the behavior of circular CFST slender beam-columns with preloads. The preloads on the steel tubes can affect significantly the behavior of CFST slender beam-columns and must be taken into account in the design.
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2

Ahmed, Mizan, Qing Quan Liang, and Ahmed Hamoda. "Fiber element modeling of circular double-skin concrete-filled stainless-carbon steel tubular columns under axial load and bending." Advances in Structural Engineering 25, no. 5 (January 10, 2022): 1114–35. http://dx.doi.org/10.1177/13694332211065187.

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Circular concrete-filled double-skin steel tubular (CFDST) columns with external stainless-steel are high-performance composite columns that have potential applications in civil construction including the construction of offshore structures, bridge piers, and transmission towers. Reflecting the limited research performed on investigating their mechanical performance, this study develops a computationally efficient fiber model to simulate the responses of short and slender beam-columns accounting for the influences of material and geometric nonlinearities. Accurate material laws of stainless steel, carbon steel, and confined concrete are implemented in the mathematical modeling scheme developed. A new solution algorithm based on the Regula-Falsi method is developed to maintain the equilibrium condition. The independent test results of short and slender CFDST beam-column are utilized to validate the accuracy of the theoretical solutions. The influences of various column parameters are studied on the load-axial strain [Formula: see text] curves, load-lateral deflection [Formula: see text] curves, column strength curves, and interaction curves of CFDST columns. Design formulas are suggested for designing short and beam-columns and validated against the numerical results. The computational model is found to be capable of simulating the responses of CFDST short and slender columns reasonably well. Parametric studies show that the consideration of the concrete confinement is important for the accuracy of the prediction of their mechanical responses. Furthermore, high-strength concrete can be utilized to enhance their load-carrying capacity particularly for short and intermediate slender beam-columns. The strengths of CFDST columns computed by the suggested design model are in good agreement with the test and numerical results.
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3

TSUDA, Keigo, Chiaki MATSUI, and Takashi FUJINAGA. "SIMPLIFIED DESIGN FORMULA OF SLENDER CONCRETE FILLED STEEL TUBULAR BEAM-COLUMNS." Journal of Structural and Construction Engineering (Transactions of AIJ) 64, no. 518 (1999): 141–46. http://dx.doi.org/10.3130/aijs.64.141_2.

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4

Chung, Jinan, Chiaki Matsui, and Keigo Tsuda. "Simplified design formula of slender concrete filled steel tubular beam-columns." Structural Engineering and Mechanics 12, no. 1 (July 25, 2001): 71–84. http://dx.doi.org/10.12989/sem.2001.12.1.071.

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5

Bembade, Nikhil S., and S. N. Tande. "Assessment of Concrete Filled Steel Tubular Members: An Experimental Review." IOP Conference Series: Materials Science and Engineering 1197, no. 1 (November 1, 2021): 012026. http://dx.doi.org/10.1088/1757-899x/1197/1/012026.

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Анотація:
Abstract In this world with rapid development, durable and fast construction techniques lead to the invention of composite materials that are robust and advantageous over conventional materials. Recently invented Concrete-filled steel tubular members are the composite members used in civil engineering works to replace conventional steel and concrete members. This paper deals with an overview of the experimental performance of various types of composite members such as columns, short columns, stub columns, beam-columns, and slender columns deals with various loads such as axial compression, flexural load, cyclic bending, long-term sustained load, torsional load, and impact load. Effects due to the variation in the parameters like steel and concrete strength, diameter to thickness ratio, axial load level, shapes of tubes of these composite members on load-carrying capacity, flexural stiffness, ductility, torsional capacity, and cyclic performance of these members are discussed in this paper. The future scope is mentioned for study related to these composite members in the paper.
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6

MATSUI, Chiaki, Keigo TSUDA, Isao OZAKI, and Yasuo ISHIBASHI. "STRENGTH OF SLENDER CONCRETE FILLED STEEL TUBULAR COLUMNS." Journal of Structural and Construction Engineering (Transactions of AIJ) 62, no. 494 (1997): 137–44. http://dx.doi.org/10.3130/aijs.62.137_1.

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7

Guan, Ping, and Lan Xiang Chen. "Mechanical Behaviors of Slender Steel Tubular Columns Filled with Steel-Reinforced High-Strength Concrete." Advanced Materials Research 1089 (January 2015): 235–38. http://dx.doi.org/10.4028/www.scientific.net/amr.1089.235.

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Анотація:
To study on the mechanical behaviors of the new slender steel-concrete composite columns that are named after steel tubular columns filled with steel-reinforced high-strength concrete(STSRHC), the mechanical models of slender STSRHC are established for the analysis with the finite element software ABAQUS. There are seven influencing factors on the mechanical behaviors of slender STSRHC, they are: slender ratio, eccentricity, the thickness of steel tube, the yield stress of steel tube, the yield stress of inserted steel, the cube strength of high-strength concrete, the shape of inserted steel cross section. The results show the results calculated by software have good agreements with the tested ones; slender ratio, eccentricity and the thickness are the most effective factors on the mechanical properties of slender STSRHC.
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8

Li, Wei Wei, and Hui Feng Zhang. "Slenderness Sensitivity Analysis of Thin-Walled Square Steel Tubular Columns Filled with Demolished Concrete Lumps." Advanced Materials Research 1163 (April 2021): 158–73. http://dx.doi.org/10.4028/www.scientific.net/amr.1163.158.

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The demolished concrete lumps (DCLs) have been demonstrated to replacement partial coarse aggregates when casting concrete. However, few studies had focused on the sensitivity of factors affecting mechanical behavior of slender square steel slender columns filled with DCLs and fresh concrete (FC) under axial compression. This research was carried out on the basis of Bo Wu's study. The Orthogonal design method was adopted in this experiment. The experimental studied involved 12 Concrete-Filled Steel Tube (CFST) columns. Each columns diameter was 159mm, the length of specimens was 2000, 2200 and 2400 mm. The Diameter-to-thickness (D/t) ratio was 79, 53 and 40. The replacement ratio of FC by DCLs was 0, 20, 40 and 60%. Test results indicated that the slenderness ratio was the most sensitive factor on the bearing capacity of slender columns under axial compression, followed by D/t ratio, and the DCLs replacement ratio was smallest factor. The ultimate bearing capacity decreased slightly with increasing DCL replacement ratio. The DCLs had slightly affect on the mechanical performances of slender CFST columns. the code CECS 28:2012 was used to calculate the bearing capacity of slender CFST columns filled with DCLs under axial compression.
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9

Sant'anna, Matheus Sarcedo, Armando Lopes Moreno Jr, and Kleber Aparecido Gomide. "Slender Mixed Concrete Filled Steel Columns, in Fire Condition." Advanced Materials Research 875-877 (February 2014): 490–95. http://dx.doi.org/10.4028/www.scientific.net/amr.875-877.490.

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Анотація:
This research is part of an extensive developing line at the Laboratory of Structures at Faculty of Civil Engineering in State University of Campinas, UNICAMP, about the behavior of columns in fire situation. In this paper, experimental results on the behavior of steel columns, slender, unfilled or filled with usual strength concrete in fire situation, are presented and compared with standard codes. It was observed that concrete filling of columns made of tubular steel profiles may provide significant improvement in structures fire safety.
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10

TSUDA, Keigo, Chiaki MATSUI, and Yasuo ISHIBASHI. "DESIGN FORMULA OF SLENDER CONCRETE FILLED STEEL TUBULAR COLUMNS." Journal of Structural and Construction Engineering (Transactions of AIJ) 62, no. 496 (1997): 119–26. http://dx.doi.org/10.3130/aijs.62.119_1.

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11

T, Sreelakshmi, and Divya K K. "Study on Axial Load Carrying Capacity of Concrete-Filled Double Skin Slender Waist-Shaped Stub Column." International Journal for Research in Applied Science and Engineering Technology 10, no. 6 (June 30, 2022): 4915–19. http://dx.doi.org/10.22214/ijraset.2022.45114.

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Анотація:
Abstract: In the present scenario, concrete-filled steel tubular members have become very popular in the construction industry. These types of members utilize both the advantages of steel and concrete such as the high strength and ductility of steel and the high strength and stiffness of concrete. In the present concrete-filled double skin slender waist-shaped column is used. These columns are composed of two steel tubes such that they are arranged in a concentric configuration with concrete sandwiched between them. It has the ability to impart equal or superior characteristics when compared to traditional concrete-filled steel tubular columns. The finite element method using ANSYS software is used for the study. In this work, the nonlinear structural behavior of CFDST columns is investigated by varying the cross-sectional shapes of steel tubes used. Various parameters that can be evaluated from this study are stress, strain, and deformation values. Comparative results of values of these parameters are obtained.
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12

Huang, Youqin, Jiyang Fu, Di Wu, Airong Liu, Wei Gao, and Yonglin Pi. "Dynamic Stability of Slender Concrete-Filled Steel Tubular Columns with General Supports." International Journal of Structural Stability and Dynamics 19, no. 04 (April 2019): 1950045. http://dx.doi.org/10.1142/s0219455419500457.

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Анотація:
The static stability of slender concrete-filled steel tubular (CFST) columns has been explored thoroughly while few researches have been carried out on the dynamic stability of CFST columns even if all applied loadings are naturally time-dependent. This paper presents an analytical procedure for evaluating the dynamic stability of CFST columns of various composite cross-sections under general boundary conditions. This paper is featured by the following facts: (1) proportional damping is considered in derivation of the governing equations on the lateral parametric vibration of the CFST columns subject to axial excitation; (2) Bolotin’s method is used to determine the boundaries of the regions of dynamic instability for the CFST columns with general supports; (3) the relationship of static and dynamic stability, and the effects of boundary conditions and cross-sectional forms are uncovered. New findings of this investigation are (1) larger amplitude or constant component of excitation make it easier for the dynamic instabilities of the CFST columns to occur, while increasing the constant component of excitation reduces the critical value of frequency ratio for the dynamic instability to occur; (2) the dynamic stability analysis can determine the critical loads for both the static and dynamic instability of CFST columns, and the critical instability load decreases with increasing disturbance on the static load; (3) under the same consumptions of steel and concrete, the square columns have better performance of dynamic stability than the circular columns, but there is no definite conclusion on the effect of hollow size on the dynamic stability of double-skin columns.
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13

Liang, Qing Quan. "High strength circular concrete-filled steel tubular slender beam–columns, Part I: Numerical analysis." Journal of Constructional Steel Research 67, no. 2 (February 2011): 164–71. http://dx.doi.org/10.1016/j.jcsr.2010.08.006.

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14

Liang, Qing Quan. "High strength circular concrete-filled steel tubular slender beam–columns, Part II: Fundamental behavior." Journal of Constructional Steel Research 67, no. 2 (February 2011): 172–80. http://dx.doi.org/10.1016/j.jcsr.2010.08.007.

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15

Patel, Vipulkumar Ishvarbhai, Qing Quan Liang, and Muhammad N. S. Hadi. "Nonlinear analysis of circular high strength concrete-filled stainless steel tubular slender beam-columns." Engineering Structures 130 (January 2017): 1–13. http://dx.doi.org/10.1016/j.engstruct.2016.10.004.

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16

Patel, Vipulkumar Ishvarbhai, Qing Quan Liang, and Muhammad N. S. Hadi. "Nonlinear analysis of biaxially loaded rectangular concrete-filled stainless steel tubular slender beam-columns." Engineering Structures 140 (June 2017): 120–33. http://dx.doi.org/10.1016/j.engstruct.2017.02.071.

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17

Patel, Vipulkumar Ishavarbhai, Qing Quan Liang, and Muhammad N. S. Hadi. "Inelastic stability analysis of high strength rectangular concrete-filled steel tubular slender beam-columns." Interaction and multiscale mechanics 5, no. 2 (June 25, 2012): 91–104. http://dx.doi.org/10.12989/imm.2012.5.2.091.

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18

Ahmed, Mizan, Qing Quan Liang, Vipulkumar Ishvarbhai Patel, and Muhammad N. S. Hadi. "Behavior of circular concrete-filled double steel tubular slender beam-columns including preload effects." Engineering Structures 220 (October 2020): 111010. http://dx.doi.org/10.1016/j.engstruct.2020.111010.

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19

Goode, C. Douglas, Artiomas Kuranovas, and Audronis Kazimieras Kvedaras. "BUCKLING OF SLENDER COMPOSITE CONCRETE‐FILLED STEEL COLUMNS." JOURNAL OF CIVIL ENGINEERING AND MANAGEMENT 16, no. 2 (June 30, 2010): 230–36. http://dx.doi.org/10.3846/jcem.2010.26.

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The paper presents the analysis of the experimental data of 1817 on concrete‐filled steel tubes ‐ CFSTs. These results are compared with the predicted results of the load‐bearing capacity of calculations of slender elements according to the methods suggested by Eurocode 4. The following types of tested CFSTs were analysed: circular and rectangular hollow section stub and long columns fully filled with concrete, which were with or without applied moments at the ends of specimen. During the results obtained in the result of the tests on the load bearing capacity for circular concrete‐filled steel tubular columns correspond with the calculated values based on methods presented by Eurocode 4. The experimental values of load bearing capacity for members of concrete‐filled rectangular hollow sections agree very well with the theoretical values where the concrete cylinder strength is below 75 N/mm2. The analysis demonstrated that preloading of concrete‐filled hollow section members does not influence the load bearing capacity. This paper also presents the examination of stress state distribution for concrete‐filled hollow section members, influence of concrete preloading and of longitudinal stress strain curves. Santrauka Straipsnyje aptariami 1817 betonšerdžiu plieniniu vamzdiniu strypu eksperimentiniai duomenys. Šie duomenys lyginami su rezultatais, gautais remiantis Eurocode 4 pateiktais kompozitiniu elementu laikomosios galios nustatymo metodais. Analizuojami tokie betonšerdžiu plieniniu strypu bandiniu tipai: pilnavidures trumpos arba liaunos apskritojo ir stačiakampio skerspjūvio vamzdines betonšerdes plienines kolonos su ju galuose veikiančiu lenkiamuoju momentu arba be jo. Apskritojo skerspjūvio betonšerdžiu kolonu bandymu metu gautieji laikomosios galios rezultatai atitinka remiantis Eurocode 4 pateiktais metodais apskaičiuotasias ju reikšmes. Stačiakampio skerspjūvio betonšerdžiu elementu laikomosios galios bandymais rastosios reikšmes labai gerai atitinka teorines reikšmes, kai šerdies betono ritininis stipris nesiekia 75 N/mm2. Analizuojant nustatyta, kad išankstinis betonšerdžiu elementu apkrovimas neturi beveik jokio poveikio elementu laikomajai galiai. Šiame straipsnyje taip pat nagrinejamas betonšerdžiu elementu itempiu būviu pasiskirstymas, betono apspaudimo poveikis bei išilginiu deformaciju ir itempiu kreives.
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20

Yao, Yao, Hao Li, Hongcun Guo, and Kanghai Tan. "Fire resistance of eccentrically loaded slender concrete-filled steel tubular columns." Thin-Walled Structures 106 (September 2016): 102–12. http://dx.doi.org/10.1016/j.tws.2016.04.025.

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21

Uy, Brian, Zhong Tao, and Lin-Hai Han. "Behaviour of short and slender concrete-filled stainless steel tubular columns." Journal of Constructional Steel Research 67, no. 3 (March 2011): 360–78. http://dx.doi.org/10.1016/j.jcsr.2010.10.004.

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22

Ibañez, Carmen, Vicente Albero, Ana Espinos, Manuel L. Romero, and Antonio Hospitaler. "10.21: Post-fire response of slender concrete-filled steel tubular columns." ce/papers 1, no. 2-3 (September 2017): 2698–707. http://dx.doi.org/10.1002/cepa.319.

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23

Phan, Dao Hoang Hiep, Vipulkumar Ishvarbhai Patel, Qing Quan Liang, Haider Al Abadi, and Huu-Tai Thai. "Simulation of uniaxially compressed square ultra-high-strength concrete-filled steel tubular slender beam-columns." Engineering Structures 232 (April 2021): 111795. http://dx.doi.org/10.1016/j.engstruct.2020.111795.

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24

Patel, Vipulkumar Ishvarbhai, Qing Quan Liang, and Muhammad N. S. Hadi. "Behavior of biaxially-loaded rectangular concrete-filled steel tubular slender beam-columns with preload effects." Thin-Walled Structures 79 (June 2014): 166–77. http://dx.doi.org/10.1016/j.tws.2014.02.013.

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25

Patel, Vipulkumar Ishvarbhai, Qing Quan Liang, and Muhammad N. S. Hadi. "High strength thin-walled rectangular concrete-filled steel tubular slender beam-columns, Part I: Modeling." Journal of Constructional Steel Research 70 (March 2012): 377–84. http://dx.doi.org/10.1016/j.jcsr.2011.10.019.

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26

Patel, Vipulkumar Ishvarbhai, Qing Quan Liang, and Muhammad N. S. Hadi. "High strength thin-walled rectangular concrete-filled steel tubular slender beam-columns, Part II: Behavior." Journal of Constructional Steel Research 70 (March 2012): 368–76. http://dx.doi.org/10.1016/j.jcsr.2011.10.021.

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27

Liang, Qing Quan, Vipulkumar Ishvarbhai Patel, and Muhammad N. S. Hadi. "Biaxially loaded high-strength concrete-filled steel tubular slender beam-columns, Part I: Multiscale simulation." Journal of Constructional Steel Research 75 (August 2012): 64–71. http://dx.doi.org/10.1016/j.jcsr.2012.03.005.

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28

Patel, Vipulkumar Ishvarbhai, Qing Quan Liang, and Muhammad N. S. Hadi. "Biaxially loaded high-strength concrete-filled steel tubular slender beam-columns, part II: Parametric study." Journal of Constructional Steel Research 110 (July 2015): 200–207. http://dx.doi.org/10.1016/j.jcsr.2012.03.029.

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29

Patel, Vipulkumar Ishvarbhai, Qing Quan Liang, and Muhammad N. S. Hadi. "Numerical analysis of high-strength concrete-filled steel tubular slender beam-columns under cyclic loading." Journal of Constructional Steel Research 92 (January 2014): 183–94. http://dx.doi.org/10.1016/j.jcsr.2013.09.008.

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30

Jiang, Zhi Guo, Xiong Zhao, Qing Xin Ren, Jin Guo Wu, and Chuang Tan. "Primary Analysis of Concrete-Filled Steel Tubular Slender Columns with Elliptical Section under Axial Compression." Advanced Materials Research 671-674 (March 2013): 736–39. http://dx.doi.org/10.4028/www.scientific.net/amr.671-674.736.

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Анотація:
This paper reports a finite element analysis of the axial compressive behaviour of concrete-filled steel tubular slender columns with elliptical section. A set of test data were used to verify the FE modeling. Typical curves of axial load (N) versus deflection at mid-height (um), as well as stress distributions of steel tube and concrete of the composite columns were compared and discussed. The results clearly show that the FE model is available for predicting the load-bearing capacities and the failure modes of the specimens.
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31

Kamil, Ghanim Mohammed, Qing Quan Liang, and Muhammad N. S. Hadi. "Fire-Resistance of Eccentrically Loaded Rectangular Concrete-Filled Steel Tubular Slender Columns Incorporating Interaction of Local and Global Buckling." International Journal of Structural Stability and Dynamics 19, no. 08 (August 2019): 1950085. http://dx.doi.org/10.1142/s0219455419500858.

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Анотація:
A mathematical model using the fiber approach is presented in this paper for quantifying the strength and fire-resistance of eccentrically loaded slender concrete-filled steel tubular (CFST) columns with rectangular sections incorporating the interaction of local and global buckling. The model utilizes the thermal simulator to ascertain the temperature distribution in cross-sections, and the nonlinear global buckling analysis to predict the interaction responses of local and global buckling of loaded CFST slender columns to fire effects. The initial geometric imperfection, air gap between the concrete and steel tube, tensile concrete strength, deformations caused by preloads, and temperature-dependent material behavior are included in the formulation. The computational theory, modeling procedure and numerical solution algorithms are described. The computational model is verified by existing experimental and numerical results. The structural responses and fire-resistance of CFST columns of rectangular sections exposed to fire are investigated. The mathematical model proposed is demonstrated to be an efficient computer simulator for the fire-performance of slender CFST columns loaded eccentrically.
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32

Ahmed, Mizan, Qing Quan Liang, Vipulkumar Ishvarbhai Patel, and Muhammad N. S. Hadi. "Local-global interaction buckling of square high strength concrete-filled double steel tubular slender beam-columns." Thin-Walled Structures 143 (October 2019): 106244. http://dx.doi.org/10.1016/j.tws.2019.106244.

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33

Liu, Lai Bao, Ke Feng Tan, and Hai Long Yu. "Mechanical Properties of High Strength Concrete Filled Steel Tubular Columns Part 2: Slender Columns and Eccentrically Loaded Columns." Advanced Materials Research 476-478 (February 2012): 2534–38. http://dx.doi.org/10.4028/www.scientific.net/amr.476-478.2534.

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Анотація:
This study continued the investigation into the mechanical properties of high strength concrete filled steel tubular columns, (HSCFST). The test results for slender columns show that the load bearing capacities and maximum displacement ratio (the ratio of displacement to the initial length at peak load) of the column decreases as slenderness ratio, determined as the ratio of the length to diameter, increases. The test results for eccentrically loaded columns show that when the slenderness ratio is kept constant, the load bearing capacity and maximum strain decrease as the eccentricity ratio increases, with the eccentricity ratio defined as the ratio as the ratio of eccentricity to radius. The formula for calculating the load bearing capacities of slender columns and the eccentrically loaded columns are presented in the paper. These formulas are designed for inclusion in design code documents.
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34

Phan, Dao Hoang Hiep, Vipulkumar Ishvarbhai Patel, Qing Quan Liang, Haider Al Abadi, and Huu-Tai Thai. "Numerical investigations of circular double-skin steel tubular slender beam-columns filled with ultra-high-strength concrete." Engineering Structures 254 (March 2022): 113814. http://dx.doi.org/10.1016/j.engstruct.2021.113814.

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35

Schnabl, S., G. Jelenić, and I. Planinc. "Analytical buckling of slender circular concrete-filled steel tubular columns with compliant interfaces." Journal of Constructional Steel Research 115 (December 2015): 252–62. http://dx.doi.org/10.1016/j.jcsr.2015.08.035.

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36

Albero, V., C. Ibañez, A. Piquer, and D. Hernández-Figueirido. "Behaviour of slender concrete-filled dual steel tubular columns subjected to eccentric loads." Journal of Constructional Steel Research 176 (January 2021): 106365. http://dx.doi.org/10.1016/j.jcsr.2020.106365.

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37

Hassanein, M. F. "Numerical modelling of concrete-filled lean duplex slender stainless steel tubular stub columns." Journal of Constructional Steel Research 66, no. 8-9 (August 2010): 1057–68. http://dx.doi.org/10.1016/j.jcsr.2010.03.008.

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38

Portolés, J. M., E. Serra, and M. L. Romero. "Influence of ultra-high strength infill in slender concrete-filled steel tubular columns." Journal of Constructional Steel Research 86 (July 2013): 107–14. http://dx.doi.org/10.1016/j.jcsr.2013.03.016.

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39

Wu, Bo, Wei-Feng Li, and Xin-Yu Zhao. "Behavior of slender square steel tubular columns filled with fresh concrete and demolished concrete lumps." Procedia Engineering 210 (2017): 196–202. http://dx.doi.org/10.1016/j.proeng.2017.11.066.

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40

Al Zand, Ahmed W., Mustafa M. Ali, Riyadh Al-Ameri, Wan Hamidon Wan Badaruzzaman, Wadhah M. Tawfeeq, Emad Hosseinpour, and Zaher Mundher Yaseen. "Flexural Strength of Internally Stiffened Tubular Steel Beam Filled with Recycled Concrete Materials." Materials 14, no. 21 (October 23, 2021): 6334. http://dx.doi.org/10.3390/ma14216334.

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Анотація:
The flexural strength of Slender steel tube sections is known to achieve significant improvements upon being filled with concrete material; however, this section is more likely to fail due to buckling under compression stresses. This study investigates the flexural behavior of a Slender steel tube beam that was produced by connecting two pieces of C-sections and was filled with recycled-aggregate concrete materials (CFST beam). The C-section’s lips behaved as internal stiffeners for the CFST beam’s cross-section. A static flexural test was conducted on five large scale specimens, including one specimen that was tested without concrete material (hollow specimen). The ABAQUS software was also employed for the simulation and non-linear analysis of an additional 20 CFST models in order to further investigate the effects of varied parameters that were not tested experimentally. The numerical model was able to adequately verify the flexural behavior and failure mode of the corresponding tested specimen, with an overestimation of the flexural strength capacity of about 3.1%. Generally, the study confirmed the validity of using the tubular C-sections in the CFST beam concept, and their lips (internal stiffeners) led to significant improvements in the flexural strength, stiffness, and energy absorption index. Moreover, a new analytical method was developed to specifically predict the bending (flexural) strength capacity of the internally stiffened CFST beams with steel stiffeners, which was well-aligned with the results derived from the current investigation and with those obtained by others.
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41

Li, Song, Chu-jie Jiao, and Song-song He. "Axial behavior of slender reactive powder concrete-filled steel tubular columns confined by CFRP." Engineering Structures 240 (August 2021): 112304. http://dx.doi.org/10.1016/j.engstruct.2021.112304.

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42

Lee, Ho-Jun, Hong-Gun Park, and In-Rak Choi. "Compression loading test for concrete-filled tubular columns with high-strength steel slender section." Journal of Constructional Steel Research 159 (August 2019): 507–20. http://dx.doi.org/10.1016/j.jcsr.2019.04.040.

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43

Liang, Qing Quan. "Numerical simulation of high strength circular double-skin concrete-filled steel tubular slender columns." Engineering Structures 168 (August 2018): 205–17. http://dx.doi.org/10.1016/j.engstruct.2018.04.062.

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44

Ahmed, Mizan, Qing Quan Liang, Vipulkumar Ishvarbhai Patel, and Muhammad N. S. Hadi. "Nonlinear analysis of square concrete-filled double steel tubular slender columns incorporating preload effects." Engineering Structures 207 (March 2020): 110272. http://dx.doi.org/10.1016/j.engstruct.2020.110272.

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45

Liu, Ruyue, Jianbin Wu, Guiyun Yan, Jianfeng Ye, and Di Wang. "Axial compressive behavior of geopolymer recycled brick aggregate concrete-filled steel tubular slender columns." Construction and Building Materials 364 (January 2023): 130013. http://dx.doi.org/10.1016/j.conbuildmat.2022.130013.

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46

Chen, Junbo, and Tak-Ming Chan. "Compressive behaviour and design of compact to slender octagonal concrete-filled steel tubular stub columns." Thin-Walled Structures 167 (October 2021): 108211. http://dx.doi.org/10.1016/j.tws.2021.108211.

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47

Yu, Chao-Qun, Jing-Zhong Tong, and Gen-Shu Tong. "Behavior and design of slender concrete-filled wide rectangular steel tubular columns under axial compression." Structures 33 (October 2021): 3137–46. http://dx.doi.org/10.1016/j.istruc.2021.06.065.

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48

Rizwan, Muhammad, Qing Quan Liang, and Muhammad N. S. Hadi. "Numerical analysis of rectangular double-skin concrete-filled steel tubular slender columns incorporating interaction buckling." Engineering Structures 245 (October 2021): 112960. http://dx.doi.org/10.1016/j.engstruct.2021.112960.

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49

Hassanein, M. F., and O. F. Kharoob. "Analysis of circular concrete-filled double skin tubular slender columns with external stainless steel tubes." Thin-Walled Structures 79 (June 2014): 23–37. http://dx.doi.org/10.1016/j.tws.2014.01.008.

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50

Ahmed, Mizan, Qing Quan Liang, Vipulkumar Ishvarbhai Patel, and Muhammad N. S. Hadi. "Computational simulation of eccentrically loaded circular thin-walled concrete-filled double steel tubular slender columns." Engineering Structures 213 (June 2020): 110571. http://dx.doi.org/10.1016/j.engstruct.2020.110571.

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