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Journal articles on the topic 'Concrete-filled steel tubular arches'

Author: Grafiati

Published: 10 January 2023

Last updated: 28 January 2023

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1

Pi, Yong-Lin, Changyong Liu, Mark Andrew Bradford, and Sumei Zhang. "In-plane strength of concrete-filled steel tubular circular arches." Journal of Constructional Steel Research 69, no. 1 (February 2012): 77–94. http://dx.doi.org/10.1016/j.jcsr.2011.08.008.

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2

Bouras, Yanni, and Zora Vrcelj. "Thermal in-plane stability of concrete-filled steel tubular arches." International Journal of Mechanical Sciences 163 (November 2019): 105130. http://dx.doi.org/10.1016/j.ijmecsci.2019.105130.

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3

Jiang, Wei, and Dagang Lü. "In-plane creep buckling of concrete-filled steel tubular arches." Transactions of Tianjin University 20, no. 3 (June 2014): 168–73. http://dx.doi.org/10.1007/s12209-014-2136-7.

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4

Huang, Fuyun, Yulong Cui, Rui Dong, Jiangang Wei, and Baochun Chen. "Evaluation on ultimate load-carrying capacity of concrete-filled steel tubular arch structure with preload." Advances in Structural Engineering 22, no. 13 (May 29, 2019): 2755–70. http://dx.doi.org/10.1177/1369433219850091.

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When casting wet concrete into hollow steel tubular arch during the construction process of a concrete-filled steel tubular arch bridge, an initial stress (due to dead load, etc.) would be produced in the steel tube. In order to understand the influence of this initial stress on the strength of the concrete-filled steel tubular arch bridge, a total of four single tubular arch rib (bare steel first) specimens (concrete-filled steel tubular last) with various initial stress levels were constructed and tested to failure. The test results indicate that the initial stress has a large influence on the ultimate load-carrying capacity and ductility of the arch structure. The high preloading ratio will reduce significantly the strength and ductility that the maximum reductions are over 25%. Then, a finite element method was presented and validated using the test results. Based on this finite element model, a parametric study was performed that considered the influence of various parameters on the ultimate load-carrying capacity of concrete-filled steel tubular arches. These parameters included arch slenderness, rise-to-span ratio, loading method, and initial stress level. The analysis results indicate that the initial stress can reduce the ultimate loading capacity significantly, and this reduction has a strong relationship with arch slenderness and rise-to-span ratio. Finally, a method for calculating the preloading reduction factor of ultimate load-carrying capacity of single concrete-filled steel tubular arch rib structures was proposed based on the equivalent beam–column method.

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5

Rajeev, Shilpa, Deepak John Peter, and M. V. Varkey. "Study of Concrete Filled Steel Tubular Arch Bridge: A Review." Applied Mechanics and Materials 857 (November 2016): 261–66. http://dx.doi.org/10.4028/www.scientific.net/amm.857.261.

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In many developed countries, concrete filled steel tubular arch bridges are being constructed for roads and railway lines. The CFST arch bridges use steel tubular arches with self consolidating concrete pumped inside and the steel tube provides confinement to the concrete infill. Also, these concrete filled steel tubes have enhanced ductility, better seismic performance, aesthetic quality, lesser consumption of materials and self weight, speedy construction and small vibrations according to studies conducted earlier. Due to the presence of steel tube, local buckling of arch is delayed and reduces the ingress of moisture when exposed to harsh environmental conditions. This paper aims to find the seismic performance of CFST arch bridges in terms of seismic output and deformation when compared to conventional bridges being currently constructed.

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6

Jiang, Wei, and Da Gang Lu. "In-Plane Creep Stability Design of Concrete Filled Steel Tubular Arches Using Inverse Reliability Method." Applied Mechanics and Materials 351-352 (August 2013): 1601–4. http://dx.doi.org/10.4028/www.scientific.net/amm.351-352.1601.

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An inverse first order reliability method (FORM) is presented to solve the safety factors for the in-plane creep stability of concrete filled steel tubular (CFST) arches. In the inverse analysis, the safety factors with or without considering the time-dependent behavior of concrete are introduced into limit state equations for the in-plane stability design of CFST arches. For different target reliability indices and steel ratios, the time-independent and time-dependent safety factors are solved. The results show that the inverse FORM is of good efficiency and applicability. The target reliability indices have little effect on the safety factors for the creep stability of CFST arches. The effects of steel ratios are significant which should be considered in design. For the commonly used steel ratios of CFST arches, the in-plane safety factors for creep stability range from 1.17 to 1.43.

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7

Liu, Changyong, Qing Hu, Yuyin Wang, and Sumei Zhang. "In-Plane Stability of Concrete-Filled Steel Tubular Parabolic Truss Arches." International Journal of Steel Structures 18, no. 4 (July 18, 2018): 1306–17. http://dx.doi.org/10.1007/s13296-018-0122-y.

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8

Shrestha, K. M., Bao-chun Chen, and Yong-feng Chen. "State of the art of creep of concrete filled steel tubular arches." KSCE Journal of Civil Engineering 15, no. 1 (December 11, 2010): 145–51. http://dx.doi.org/10.1007/s12205-011-0734-7.

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9

Luo, Kai, Yong Lin Pi, Wei Gao, and Mark A. Bradford. "Finite Element Model for Analysis of Time-Dependent Behaviour of Concrete-Filled Steel Tubular Arches." Applied Mechanics and Materials 553 (May 2014): 606–11. http://dx.doi.org/10.4028/www.scientific.net/amm.553.606.

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This paper presents a finite element model for the linear and nonlinear analysis of time-dependent behaviour of concrete-filled steel tubular (CFST) arches. It is known when a CFST arch is subjected to a sustained load, the visco-elastic effects of creep in the concrete core will result in significant increases of the deformations and internal forces in the long-term. In this paper, a finite element model is developed using the age-adjusted effective modulus method to describe the creep behaviour of the concrete core. The finite element results of long-term displacement and stress redistribution agree very well with their analytical counterparts. The finite element model is then used to compare the linear and nonlinear results for the long-term behaviour of shallow CFST arches. It is demonstrated that the linear analysis underestimates the long-term deformations and internal force significantly and that to predict the time-dependent behaviour shallow CFST arches accurately, the nonlinear analysis is essential.

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10

Wu, Xinrong, Changyong Liu, Wei Wang, and Yuyin Wang. "In-Plane Strength and Design of Fixed Concrete-Filled Steel Tubular Parabolic Arches." Journal of Bridge Engineering 20, no. 12 (December 2015): 04015016. http://dx.doi.org/10.1061/(asce)be.1943-5592.0000766.

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11

Liu, Changyong, Yuyin Wang, Wei Wang, and Xinrong Wu. "Seismic performance and collapse prevention of concrete-filled thin-walled steel tubular arches." Thin-Walled Structures 80 (July 2014): 91–102. http://dx.doi.org/10.1016/j.tws.2014.03.005.

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12

Luo, Kai, Yong-Lin Pi, Wei Gao, Mark Andrew Bradford, and David Hui. "Investigation into long-term behaviour and stability of concrete-filled steel tubular arches." Journal of Constructional Steel Research 104 (January 2015): 127–36. http://dx.doi.org/10.1016/j.jcsr.2014.10.014.

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13

Geng, Yue, Gianluca Ranzi, Yu-Tao Wang, and Yu-Yin Wang. "Out-of-plane creep buckling analysis on slender concrete-filled steel tubular arches." Journal of Constructional Steel Research 140 (January 2018): 174–90. http://dx.doi.org/10.1016/j.jcsr.2017.10.010.

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14

Bouras, Yanni, and Zora Vrcelj. "Out-of-plane stability of concrete-filled steel tubular arches at elevated temperatures." International Journal of Mechanical Sciences 187 (December 2020): 105916. http://dx.doi.org/10.1016/j.ijmecsci.2020.105916.

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15

Bradford, Mark Andrew, Yong-Lin Pi, and Weilian Qu. "Time-dependent in-plane behaviour and buckling of concrete-filled steel tubular arches." Engineering Structures 33, no. 5 (May 2011): 1781–95. http://dx.doi.org/10.1016/j.engstruct.2011.02.018.

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16

Gao, Jing, and Bao Chun Chen. "Investigation of in-plane behaviour of concrete-filled steel tubular model arches with corrugated steel webs." Proceedings of the Institution of Civil Engineers - Bridge Engineering 166, no. 3 (September 2013): 205–16. http://dx.doi.org/10.1680/bren.11.00013.

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17

Pi, Yong-Lin, Mark Andrew Bradford, and Weilian Qu. "Long-term non-linear behaviour and buckling of shallow concrete-filled steel tubular arches." International Journal of Non-Linear Mechanics 46, no. 9 (November 2011): 1155–66. http://dx.doi.org/10.1016/j.ijnonlinmec.2011.05.003.

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18

Han, Xu, Dilum Fernando, and Bing Han. "Numerical modelling of the in-plane behaviour of concrete-filled circular steel tubular arches." Construction and Building Materials 264 (December 2020): 120693. http://dx.doi.org/10.1016/j.conbuildmat.2020.120693.

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19

Mei, Yuchun, Xiuming Li, Weiteng Li, Ning Yang, Yuhua Zhang, and Shuo Zhang. "Bearing properties and influence laws of concrete-filled steel tubular arches for underground mining roadway support." Science and Engineering of Composite Materials 27, no. 1 (March 26, 2020): 73–88. http://dx.doi.org/10.1515/secm-2020-0008.

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AbstractThe concrete-filled steel tubular (CFST) arch is a new high-strength support form for a mine roadway in deep/soft rock stratum; however, the bearing characteristics have not been clearly elucidated for scientifically guiding field applications. Numerical simulation tests with 15 schemes shaped as a ‘half circle with two straight legs’ and 10 schemes shaped as a circle were conducted, and the main responses of the numerical model were verified by performing the laboratory tests to evaluate the basic CFST structures and global CFST arches. The bearing and failure behaviors of the CFST arches were studied, and the influence laws, in terms of the arch shape, size and lateral pressure coefficient λ, were further investigated. The results show that the bearing capacity of a circular arch is significantly higher than that of a straight-leg arch under a uniform load. Furthermore, the bearing capacity of the circular arch decreases considerably with the increase in the arch size or λ. In addition, the bearing capacity of a straight-leg arch decreases with the increase in the leg height and arch size; however, it first increases and later decreases with the increase in λ. The failure modes of all the arches correspond to the instability at the extreme point caused by the strength deterioration, except in the case of a circular arch under a uniform pressure, the failure mode of which corresponds to the instability at the branch points. Finally, the recommendations for the field practice are proposed and verified.

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20

Chen, Zhihua, Hao Lin, Xiaodun Wang, Hongbo Liu, Ken’ichi Kawaguchi, and Minoru Matsui. "Structural Stability Analysis of Eye of the Yellow Sea, a Large-Span Arched Pedestrian Bridge." Metals 12, no. 7 (July 3, 2022): 1138. http://dx.doi.org/10.3390/met12071138.

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To date, scholars’ research on the stability behavior of the arch structure mainly focuses on solid–web section arches, steel tubular truss arches and concrete-filled steel tubular arches, but the stability behavior of the novel spatial grid arch structure, which integrates the characteristics of grid structure and arch structure, is not yet clear. Based on the Eye of the Yellow Sea pedestrian bridge project in Rizhao, China, the stability behavior of this large-span spatial grid arch structure was studied, in this paper, by the project’s structure design team. The project is a glass covered steel arch pedestrian bridge with a span of 177 m, a height of 63.5 m, an elliptical section with a long axis of 18 m, and a short axis of 13.5 m. The elastic and the nonlinear elasto-plastic stability behavior considering different initial geometric imperfections, was analyzed by the ABAQUS finite element model. The buckling modes and the full-range load-displacement curve of the structure were analyzed, and the stress distribution, deformation mode and overall structural performance during the whole loading process were analyzed. The effects of initial imperfections, geometric nonlinearity and material nonlinearity on the ultimate load-carrying capacity of the structure were studied. The stability behavior of large-span spatial grid arch structure was studied in this paper, which provides an important reference for the design and analysis of such structures.

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21

Liu, Changyong, Yuyin Wang, Xinrong Wu, and Sumei Zhang. "In-Plane Stability of Fixed Concrete-Filled Steel Tubular Parabolic Arches under Combined Bending and Compression." Journal of Bridge Engineering 22, no. 2 (February 2017): 04016116. http://dx.doi.org/10.1061/(asce)be.1943-5592.0000993.

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22

Sheng, Ye. "Experimental Study on In-Plane Behavior of CFST Arch with New-Type Dumbbell-Shaped Section." Advanced Materials Research 255-260 (May 2011): 1198–203. http://dx.doi.org/10.4028/www.scientific.net/amr.255-260.1198.

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The weakness of traditional dumbbell-shaped section is that when concrete is filled into the web space, great stress is likely to produce cracks in the weld sealing between steel tube and web plates. In order to avoid this condition, a new-type dumbbell-shaped section is proposed. Experiments on concrete filled steel tubular (CFST) model arches with new-type dumbbell-shaped section have been carried out, concentrated loading at crown and L/4 section respectively. The result indicated that the new-type CFST arch has good elastic-plastic behavior and high strength, no local buckling appeared during the whole loading process, its in-plane mechanic behavior is similar with that of the CFST arch with single-tube. The dual nonlinear finite element calculation model is set up for the model arch, by means of this model the load-deflection curves during the loading process and the ultimate load-carrying capacity is analyzed.

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23

Sheng, Ye. "Parameter Analysis on Ultimate Load-Carrying Capacity of CFST Arch Rib with New-Type Dumbbell-Shaped Section." Advanced Materials Research 634-638 (January 2013): 3825–29. http://dx.doi.org/10.4028/www.scientific.net/amr.634-638.3825.

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Experiments on concrete filled steel tubular (CFST) model arches with new-type dumbbell-shaped section have been carried out, concentrated loading at crown and L/4 section respectively. Applied with large general program ANSYS, a finite element calculation model was set up for the model arch, by means of this model the main parameters including arch axis coefficient, ratio of rise to span, slenderness ratio, and steel ratio are analyzed. Based on the discussion of influence of parameter variation on nonlinear characteristics and ultimate load-carrying capacity of model arch, the theoretical basis is established for the development of this structure and the conclusion can be taken as reference in practice use and further research work.

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24

Hu, Qing, Changyong Liu, Changchun Yuan, Yuyin Wang, and Sumei Zhang. "Experimental Investigation into In-plane Stability of Concrete-Filled Steel Tubular Parabolic Arches Under Five-Point Concentrated Loads." International Journal of Steel Structures 20, no. 6 (October 31, 2020): 2038–50. http://dx.doi.org/10.1007/s13296-020-00429-y.

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25

Han, Xu, Bing Han, Huibing Xie, Wutong Yan, and Qi Ma. "Experimental and numerical study on the in-plane behaviour of concrete-filled steel tubular arches with long-term effects." Thin-Walled Structures 169 (December 2021): 108507. http://dx.doi.org/10.1016/j.tws.2021.108507.

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26

Yang, LuFeng, Weiwei Xie, YuFeng Zhao, and Jian Zheng. "Data for ultimate bearing capacity of concrete-filled steel tubular members and arches by the elastic modulus reduction method." Data in Brief 31 (August 2020): 105994. http://dx.doi.org/10.1016/j.dib.2020.105994.

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27

Tsuda, K. "Concrete Filled Steel Tubular Structures." Concrete Journal 52, no. 1 (2014): 65–70. http://dx.doi.org/10.3151/coj.52.65.

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28

Li, Jun-Tao, Zong-Ping Chen, Jin-Jun Xu, Cheng-Gui Jing, and Jian-Yang Xue. "Cyclic behavior of concrete-filled steel tubular column–reinforced concrete beam frames incorporating 100% recycled concrete aggregates." Advances in Structural Engineering 21, no. 12 (February 7, 2018): 1802–14. http://dx.doi.org/10.1177/1369433218755521.

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Concrete-filled steel tubular structural members can be recognized as an effective mean to improve the mechanical behavior in terms of strength, stiffness, ductility, and energy dissipation for the initial recycle aggregate concrete deficiencies compared with natural aggregate concrete. A small-scale model of square concrete-filled steel tubular column–reinforced concrete beam frame realized employing 100% recycled coarse aggregates was tested under combined axial loads and cyclic reversed lateral flexure. The failure modes, plastic hinges sequence, hysteresis loop, skeleton curve, stiffness degeneration, energy dissipation capacity, and ductility of the frame were presented and analyzed in detail. The structural behavior of square concrete-filled steel tubular column–reinforced concrete beam frame with 100% recycled coarse aggregates was compared with circular concrete-filled steel tubular column–reinforced concrete beam frame made with 100% recycled coarse aggregates. A fiber-based program model for the nonlinear analysis of concrete-filled steel tubular column–reinforced concrete beam frames incorporating recycled coarse aggregates was developed using SeismoStruct, to highlight the effect of recycled coarse aggregate content on mechanical behavior of recycled aggregate concrete and the confinement effect provided by outer tubes on core concrete. The analysis results show that the numerical model can well simulate and predict the seismic behavior of concrete-filled steel tubular column–reinforced concrete beam frames with 100% recycled coarse aggregate content. Both experimental and numerical results demonstrate that concrete-filled steel tubular column–reinforced concrete beam frames with large content of recycled coarse aggregates have a receivable seismic performance, and it is feasible to apply and popularize recycled aggregate concrete into concrete-filled steel tubular structures in seismic regions.

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29

Wei, Yang, Xunyu Cheng, Gang Wu, Maojun Duan, and Libin Wang. "Experimental investigations of concrete-filled steel tubular columns confined with high-strength steel wire." Advances in Structural Engineering 22, no. 13 (May 26, 2019): 2771–84. http://dx.doi.org/10.1177/1369433219850645.

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The use of high-strength steel wires is proposed to provide external confinement for concrete-filled steel tubular columns. This article presents an experimental study on high-strength steel-wire-confined concrete-filled steel tubular columns with various high-strength steel wire spacings and steel tube thicknesses and diameters. As observed from the experimental results, high-strength steel wires can effectively constrain and delay the local buckling of the steel tube in concrete-filled steel tubular columns. As a result, the load-carrying capacity and the post-peak stiffness of concrete-filled steel tubular columns are significantly increased by the high-strength steel wire confinement. When the spacing of the high-strength steel wires decreases, the load–axial strain response can evolve from a softening behavior to a hardening behavior for the concrete-filled steel tubular columns. Moreover, theoretical models were developed to predict the load-carrying capacity of the externally confined concrete-filled steel tubular columns, taking into account the mechanical mechanism and the triaxial stress state of the inner concrete. The analytical results are generally in reasonable agreement with the experimental results.

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30

Xu, Youwu, Jian Yao, and Xin Sun. "Cold-formed elliptical concrete-filled steel tubular columns subjected to monotonic and cyclic axial compression." Advances in Structural Engineering 23, no. 7 (December 24, 2019): 1383–96. http://dx.doi.org/10.1177/1369433219894242.

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Concrete-filled steel tubular columns are widely used in structural systems, and elliptical concrete-filled steel tubular columns are receiving more and more attention. An experimental study on cold-formed elliptical concrete-filled steel tubular stub columns was carried out under monotonic and cyclic axial compression. The failure modes, axial load–displacement curves, ultimate loads, hoop strain–axial strain behavior, strength deterioration, and residual deformation were obtained and discussed. Complementary finite element models considering the complex non-uniform confinement between steel tube and concrete were developed and validated by experimental results. Then, the validated FE model was used to study the influence of aspect ratio, yield strength of steel, and compressive strength of concrete on the axial capacity of elliptical concrete-filled steel tubular stub columns. Finally, a relatively simple superposition method was put forward to predict the axial bearing capacity of elliptical concrete-filled steel tubular stub columns. Compared with the test data, both the numerical method and superposition method can generate accurate predictions.

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31

Liao, Fei-Yu, Wei-Jie Zhang, and Hao Han. "Cyclic performance of circular concrete-filled steel tubular members with initial gap between tube and concrete core." Advances in Structural Engineering 23, no. 1 (August 6, 2019): 174–89. http://dx.doi.org/10.1177/1369433219866291.

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It is common that initial gaps exist between the steel tube and the core concrete in concrete-filled steel tubular structural members, which might affect the performance of the structure. This article aims to study the effects of the gaps on the cyclic behaviour of circular concrete-filled steel tubular members. A total of 24 concrete-filled steel tubular specimens were tested under constant axial load and cyclically lateral loads, where the main testing parameters included the types of gap, the gap ratio, the axial load level and the steel ratio. The failure mode, lateral load versus lateral displacement hysteretic curve and load versus displacement envelope curve of concrete-filled steel tubular specimens with pre-designed gaps were experimentally investigated and compared with those of the reference ones without any gap. The effects of gaps on the ultimate strength, ductility and dissipated energy of the concrete-filled steel tubular members were quantitatively evaluated according to the test results. The influence of gaps on circular concrete-filled steel tubes under different loading conditions, such as axial compressive loading, pure bending, eccentrically compressive loading and cyclic lateral loading, was also compared and discussed.

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32

Shen, Yongkang, Weiqiu Zhong, and Shengyuan Xiong. "Finite Element Analysis on Mirco-Steel Tubular Pile Refilled Concrete Reinforced Structure Foundation." Journal of Physics: Conference Series 2202, no. 1 (June 1, 2022): 012015. http://dx.doi.org/10.1088/1742-6596/2202/1/012015.

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Abstract Steel tubular pile technology is an effective method to reinforced foundation in retrofitting of existing buildings. Mirco-steel tubular pile is constructed with concrete filled steel tubular, the infilled concrete could reinforced the strength of mirco-pile and prevented the local-buckling of steel tubular. According to ANSYS software, a mode of finite element analysis was built with some function between mirco-pile and soil foundation, the mode was confirmed by some test data. The slenderness ratio and material strength were two important factors for the bearing capability of mirco-pile with concrete filled steel tubular. The bearing capability and some influence factors on concrete filled mirco-steel tubular piles were analyzed by factors analysis method. The mode of finite element analysis and factors analysis method on were applied for reinforced building foundation and referred to other application of concrete filled steel tubular.

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33

Baig, Muhammad Naseem, Jiansheng Fan, and Jianguo Nie. "Strength of concrete filled steel tubular columns." Tsinghua Science and Technology 11, no. 6 (December 2006): 657–66. http://dx.doi.org/10.1016/s1007-0214(06)70248-6.

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34

Dagher, Habib J., Daniel J. Bannon, William G. Davids, Roberto A. Lopez-Anido, Edwin Nagy, and Keenan Goslin. "Bending behavior of concrete-filled tubular FRP arches for bridge structures." Construction and Building Materials 37 (December 2012): 432–39. http://dx.doi.org/10.1016/j.conbuildmat.2012.07.067.

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35

He, Mei Li, Hua Long Yu, Yan Cao, and Yong Kang Xia. "Experimental Research on Joints Behavior of Concrete-Filled Steel Tubular Columns." Applied Mechanics and Materials 446-447 (November 2013): 1409–12. http://dx.doi.org/10.4028/www.scientific.net/amm.446-447.1409.

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By means of eccentric compressive tests of Concrete-filled Steel Tubular Columns, to research the mechanical properties and failure modes of Concrete-filled Steel Tubular Columns without yield point. Research shows that, the failure modes of axial compressive Concrete-filled Steel Tubular Columns without yield point, as well as axial compressive short columns, have the same trend of oblique shear failure.

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36

Yuan, Fang, Hong Huang, and Mengcheng Chen. "Behaviour of square concrete-filled stiffened steel tubular stub columns under axial compression." Advances in Structural Engineering 22, no. 8 (February 8, 2019): 1878–94. http://dx.doi.org/10.1177/1369433218819584.

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As China’s infrastructure grows rapidly, the use of concrete-filled steel tubular structures for engineering applications is attracting increasing interest owing to their high section modulus, high strength and good seismic performance. However, for concrete-filled steel tubular members with large width-to-thickness ratio, steel tubes are prone to outward buckling when they are subjected to axial compression. Welding of longitudinal stiffeners on the steel tubes is one of the most efficient approaches for delaying local buckling and thus improving the mechanical performance of such type of concrete-filled steel tubular members. This study attempts to investigate the axial compression behaviour of concrete-filled stiffened steel tubular members with square sections through experimental study and finite element analysis. First, 14 concrete-filled steel tubular stub columns, with different width-to-thickness ratios of steel tube and depth-to-thickness ratios of stiffener, were subjected to axial compression loads and tested. It was found that the use of stiffeners increases the ultimate strength and improves the stability of the stub columns. Later, an investigation on the behaviour of the stiffened concrete-filled steel tubular stub columns was carried out through a three-dimensional finite element analysis. The accuracy of the finite element analysis model was verified by the test results. A parametric study was conducted to further evaluate the stiffening schemes that influence the axial compression strength. Finally, the research findings were synthesized into a new simplified model to predict the load-carrying capacity of stiffened concrete-filled steel tubular stub columns that allows for large width-to-thickness ratios.

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37

Li, Zhao, Jingwei Gao, Jindong Xu, and Guofeng Du. "Stress monitoring and impact bearing capacity of circular concrete-filled steel tubular short columns under axial impact loads." Advances in Structural Engineering 23, no. 3 (September 23, 2019): 565–77. http://dx.doi.org/10.1177/1369433219876205.

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Compared with the traditional reinforced concrete columns, the concrete-filled steel tubular columns with a better restraint effect of steel tube on core concrete showed higher bearing capacity and ductility under static loads. However, except static loads, concrete-filled steel tubular columns are commonly exposed to the extreme dynamic loads including earthquake, explosion, and impact. The study on dynamic behavior of concrete-filled steel tubular columns is extremely significant to ensure their safety against such dynamic loads. In this article, a polyvinylidene fluoride piezoelectric smart sensor was proposed to monitor the axial impact bearing capacity of specimen based on stress monitoring under impact loads. The concrete-filled steel tubular columns with smart sensor embedded were tested, which considered the effects of both hammer impact heights and steel tube thickness on the axial impact bearing capacity. The impact bearing capacity calculated based on the monitoring results of polyvinylidene fluoride sensor is in good agreement with the measured values, which verifies the feasibility of this method. Moreover, it is found that the failure mode of concrete-filled steel tubular short columns is the local tearing failure or local buckling. In addition, non-linear finite element models were also established to study the effect of different parameters on the axial bearing capacity. The simplified formula for calculating the axial impact bearing capacity of concrete-filled steel tubular short columns was proposed based on the large amount verified model. Through the comparison between the calculation value and the test value, the formula is found to well reflect the axial impact bearing capacity of concrete-filled steel tubular short columns, which provides a reference for similar research.

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38

Wang, Qing-Li, Hang-Cheng Gao, and Kuan Peng. "Study of the Behavior of Square Concrete-Filled CFRP Steel Tubular under a Bending-Torsion Load." Polymers 14, no. 7 (April 5, 2022): 1472. http://dx.doi.org/10.3390/polym14071472.

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To study the behavior of square concrete-filled CFRP (carbon fiber polymer) steel tubular under bending-torsional load, nine square section concrete-filled CFRP steel tubular specimens are designed. The T-θ curve and failure mode of square concrete-filled CFRP steel tubular are studied under a bending-torsional load. Based on the test results, a finite element modeling method is proposed by using the finite element software ABAQUS, and the simulation results are compared with the experimental results. The results show that the simulation is in good agreement with the experimental results. On the basis of verifying the reliability of the model, the whole stress process and parameter analysis of the component are studied, and the calculation expression of bearing capacity of square concrete-filled CFRP steel tubular under bending-torsion load is proposed. The predicted specimen-bearing capacity of the proposed calculation expression of the bearing capacity of square concrete-filled CFRP steel tubular under bending-torsion load is basically consistent with the test results.

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39

Xie, Li, Mengcheng Chen, Wei Sun, Fang Yuan, and Hong Huang. "Behaviour of concrete-filled steel tubular members under pure bending and acid rain attack: Test simulation." Advances in Structural Engineering 22, no. 1 (June 27, 2018): 240–53. http://dx.doi.org/10.1177/1369433218783323.

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As infrastructure in China continues to develop rapidly, concrete-filled steel tubular structures are increasingly attracting interest for use in construction engineering owing to their high section modulus, high strength and good seismic performance characteristics. However, acid rain occurs throughout much of China, and the mechanical behaviour of concrete-filled steel tubular members may be affected by the corrosive environment created by acid rain. In this study, a total of 14 circular and square-shaped concrete-filled steel tubular members made of different types of concrete (general and recycled) and with varying corrosion rates (0%, 10%, 20% and 30%) were tested under four-point bending. After testing, the flexural behaviour of the corroded and uncorroded concrete-filled steel tubular beams were analysed in detail in terms of their failure modes, moment versus deformation curves and ultimate strength. The results indicate that the corrosion leads to an evident decrease in yield strength, elastic modulus and tensile strain capacity of steel plates and also to a noticeable deterioration in the ultimate strength of the concrete-filled steel tubular members. The replacement of general concrete aggregate with recycled concrete aggregate has little impact on the flexural performance of corroded and uncorroded concrete-filled steel tubular beams. Finally, comparisons were made between the experimental results and predicted ultimate strengths from four existing codes (GB 50936-2014, DB36/J001-2007, AIJ and EN 1994-1-1:2004).

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A, Arunraj, Ashwin Kumar J, and Ajith J. "Behaviour of Basalt Fiber Reinforced Concrete Filled Mild Steel Tube." International Journal of Engineering & Technology 7, no. 4.2 (September 22, 2018): 15. http://dx.doi.org/10.14419/ijet.v7i4.2.19994.

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The present study is an attempt to understand the behavior of concrete filled steel tubular column under uniaxial load. A concrete-filled steel tubular (CFST) column is formed by filling a steel tube with concrete. It is well known that concrete- filled steel tubular (CFST) columns are currently being used in the construction of buildings, due to their excellent static and earthquake-resistant properties, such as high strength, high ductility, large energy absorption capacity, bending stiffness etc. The external strengthening of using basalt fiber reinforced concrete material is emerging as a new trend in enhancing the structural performance concrete filled steel tubular members to counteract the drawbacks of the past rehabilitation work. In this project we are going to study about strength of the steel and concrete by doing compression strength, flexural strength, push out and uniaxial compression test. The tests are carried out with the help of universal testing machine. The readings are recorded and graphs are plotted.

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Kuranovas, Artiomas, and Audronis Kazimieras Kvedaras. "CENTRIFUGALLY MANUFACTURED HOLLOW CONCRETE‐FILLED STEEL TUBULAR COLUMNS." JOURNAL OF CIVIL ENGINEERING AND MANAGEMENT 13, no. 4 (December 31, 2007): 297–306. http://dx.doi.org/10.3846/13923730.2007.9636450.

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Hollow concrete‐filled steel tubular elements (H‐CFSTs) represent a type of composite steel‐concrete elements. These elements are usually produced by spinning. During this process wet concrete mix in the steel tube is displaced and compacted by centrifugal force and the concrete core so formed achieves better physical and mechanical properties in comparison with other compaction methods. These improvements are related to concrete density, Young's modulus, Poisson’ s ratio, compressive strength, deformability as well as to a more uniform distribution of fine and coarse aggregates and binding particles along the thickness of the hollow concrete core formed by multi‐layering centrifugation process. The peculiarities of the spinning process, recommendations for proportioning the components for the specimens manufacture, spinning time needed for displacement and compaction of concrete mix, preparation of specimens for testing and testing methods used are presented in this paper.

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Ju, Kai Lin, Qiu Sheng Li, Guo Feng Du, and Yi Li. "Research on Machanical Behavior of T-Shaped Concrete-Filled Steel Tubular Stub Columns with Steel Bone." Advanced Materials Research 639-640 (January 2013): 1077–82. http://dx.doi.org/10.4028/www.scientific.net/amr.639-640.1077.

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Concrete-filled steel tube structure is one of the important load-bearing systems of modern high-rise building.The research indicate that concrete-filled steel tube structure has a good static and seismic performance,and concrete-filled steel tubular component is always used as axial compression and compression-bending component.However,what about the mechanical behavior of this combinational structure (concrete-filled steel tubular columns with steel bone built-in)? So there is a new type of special-shaped cross-section of composite structure,that is the T-shaped concrete-filled steel tubular columns with steel bone.The research about this structure is less throughout domestic and foreign.So the axial compressive experiments of six T-shaped concrete-filled steel tubular stub columns, five with and one without steel bone, were carried out. The effects of tube confining factor, bone indicator on the axial compressive behavior of the columns are analyzed. Experimental results indicate that the ultimate strength of the T-shaped steel tubular stub columns with steel bone increases, can be increased by 71.7%.And that the setting of steel bone improves the confinement of the concrete core, delays or even avoids the local buckling of the steel tube before the stress attains the yield strength. The ductility of the columns is also greatly increased.And at last in this paper, use of static equilibrium conditions and limit yield conditions,and in reference to literature[1],the calculation equation of compression capacity of this combinational column is derived.Moreover,calculation results according to the formula in this paper are in good agreement with the experimental results. The conclusions might be used as reference to structural design and plan.

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Cakiroglu, Celal, Kamrul Islam, Gebrail Bekdaş, and Muntasir Billah. "CO2 Emission and Cost Optimization of Concrete-Filled Steel Tubular (CFST) Columns Using Metaheuristic Algorithms." Sustainability 13, no. 14 (July 20, 2021): 8092. http://dx.doi.org/10.3390/su13148092.

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Concrete-filled steel tubular columns have garnered wide interest among researchers due to their favorable structural characteristics. To attain the best possible performance from concrete-filled steel tubular columns while reducing the cost, the use of optimization algorithms is indispensable. In this regard, metaheuristic algorithms are finding increasing application in structural engineering due to their high efficiency. Various equations that predict the ultimate axial load-carrying capacity (Nu) of concrete-filled steel tubular columns are available in design codes as well as in the research literature. However, most of these equations are only applicable within certain parameter ranges. To overcome this limitation, the present study adopts a recently developed set of equations for the prediction of Nu that have broader ranges of applicability. Furthermore, a newly developed metaheuristic algorithm, called the social spider algorithm, is introduced and applied in optimizing the cross-section of circular concrete-filled steel tubular columns. The improvement of the structural dimensioning under the Nu constraint is demonstrated. The objective underlying the optimization presented here is to minimize the CO2 emission and cost associated with the fabrication of concrete-filled steel tubular stub columns. In this context, the relationships between the cross-sectional dimensioning of circular concrete-filled steel tubular columns and the associated CO2 emissions and cost are characterized and visualized.

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Wang, Hai Liang, and Hao Li. "Experimental Research on Basalt Fiber Reinforced High-Strength Concrete Filled Steel Tubular Short Columns Subjected to Axial Compression Load." Advanced Materials Research 834-836 (October 2013): 768–71. http://dx.doi.org/10.4028/www.scientific.net/amr.834-836.768.

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The tests of 5 basalt fiber reinforced high-strength concrete filled steel tubular short columns and 1 high-strength concrete filled steel tubular short column were carried out under axial compression load, and the influence of different dosages and length-diameter ratio of basalt fiber on the mechanical behavior of the basalt fiber reinforced high-strength concrete filled steel tubular short columns were discussed. The results indicated that the ultimate load-bearing capacity and the ductility of short columns were improved by adding basalt fiber in concrete, and the failure mode of short columns was not affected by adding BF in concrete.

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Yoda, K., and J. Jeon. "Technological Development of Concrete for Concrete Filled Steel Tubular Structures." Concrete Journal 54, no. 5 (2016): 559–64. http://dx.doi.org/10.3151/coj.54.5_559.

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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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Boukhalkhal, Said Hicham, Abd Nacer Touati Ihaddoudène, Luis Filipe Da Costa Neves, and Wafa Madi. "Dynamic behavior of concrete filled steel tubular columns." International Journal of Structural Integrity 10, no. 2 (April 8, 2019): 244–64. http://dx.doi.org/10.1108/ijsi-07-2018-0040.

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Purpose The purpose of this paper is to investigate the static and dynamic inelastic response of rigid and semi-rigid connections of steel structures with concrete-filled steel tube (CFST) columns built in high seismic areas, and to compare it with those with open section columns. Design/methodology/approach CFST columns are frequently used in moment resistant steel frames located in seismic areas due to their inherent advantages, including their ductility, energy absorption capacity as well as their high bearing capacity. The smart combination of steel and concrete makes it possible to benefit from the advantages of both components to the maximum. This research work presents the nonlinear dynamic response of moment resistant steel frames with CFST columns, with rigid or semi-rigid connections, built in high seismic areas, according to the Algerian seismic code RPA 99/2003, European EC8 and American FEMA 356 to show the nonlinear characteristics of this type of structures, and their advantages over steel frames with open section columns. Findings The paper presents the advantages of using CFST columns with rigid and semi-rigid connections on the seismic response of portal steel frames. A high performance level in terms of ductility, plastic hinges distribution and their order of appearance has been obtained. It also shows the low effect of seismic loading on the structural elements with CFST columns compared to structures with open section columns. Originality/value The investigation of the numerical results has shown the possibility of their use in the seismic areas for their adequate performance, and also with respect to the design limits specified in the seismic guidelines. In addition, this study represents a first step to develop seismic performance factors for steel structures with CFST columns in Algeria, where the Algerian code do not include a comprehensive specification for the composite steel structures.

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Han, Lin-Hai. "Fire Resistance of Concrete Filled Steel Tubular Columns." Advances in Structural Engineering 2, no. 1 (December 1998): 35–39. http://dx.doi.org/10.1177/136943329800200105.

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Feng, Ran, and Ben Young. "Design of Concrete-Filled Stainless Steel Tubular Connections." Advances in Structural Engineering 13, no. 3 (June 2010): 471–92. http://dx.doi.org/10.1260/1369-4332.13.3.471.

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Han, Jin Sheng, Xue Wen Wang, Li Yi Wang, and Min Ji. "Comparison and Analysis of the Calculation Formulas for the Bearing Capacity of Concrete Filled Steel Tubular Columns." Advanced Materials Research 1065-1069 (December 2014): 1337–40. http://dx.doi.org/10.4028/www.scientific.net/amr.1065-1069.1337.

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At present, many analysis methods and calculation formulas of the bearing capacity of concrete filled steel tubular columns have been researched. But these numerous calculation formulas of the bearing capacity have varied forms, and the application scope and the calculation precision of them are also quite different, which makes it difficult and confused for engineering designer to choose a suitable formula. Primary calculation formulas of the bearing capacity of concrete filled steel tubular columns are summarized. The calculation results of these formulas are compared with some test results of the concrete filled steel tubular columns with a large diameter. The applicability and the accuracy of these formulas are analyzed. Based on these comparisons and analyses, reasonable suggestion is given to select the suitable formula. Finally, one formula is provided to calculate the ultimate bearing capacity of concrete filled steel tubular columns reinforced with steel bars.

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