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Journal articles on the topic 'High strength concrete Columns'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Lahoud, Antoine E. "Slenderness effects in high-strength concrete columns." Canadian Journal of Civil Engineering 18, no. 5 (1991): 765–71. http://dx.doi.org/10.1139/l91-093.

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High-strength concretes are being increasingly used in the columns of high-rise buildings. Analytical studies of the slenderness effects in these columns have been very limited. The behavior of slender columns with normal- and high-strength concretes is studied using a finite element program. Differences and similarities in long-term and short-term behaviors between high-strength and normal-strength slender concrete columns are noted and discussed. Key words: columns, slenderness, high-strength concrete, creep, finite elements.

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2

Vasilenko, Anastasia, Dmitry Chernogorsky, Dmitry Strakhov, and Leonid Sinyakov. "High-strength concrete eccentrically compressed elements." E3S Web of Conferences 140 (2019): 02017. http://dx.doi.org/10.1051/e3sconf/201914002017.

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The article is devoted to the analysis of technical and economic efficiency of application of high-strength concrete (HSC) in the eccentrically compressed columns. In the first part of the paper, the effect of concrete grade on in-creasing the column stiffness depending on steel ratio at different values of the relative eccentricity is considered. According to the results of the calculation, application of HSC is most effective at low values of the relative ec-centricity because increasing the concrete strength leads to more intensive increasing of column stiffness than increasing of steel rat

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3

Liang, Yong Duo, Zhi Guo Sun, Gong Cai Chi, and Bing Jun Si. "Analysis of Equivalent Plastic Hinge Length of High Strength Concrete Bridge Columns by Using High Strength Reinforcements." Applied Mechanics and Materials 90-93 (September 2011): 1144–48. http://dx.doi.org/10.4028/www.scientific.net/amm.90-93.1144.

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The use of high strength reinforcement and high strength concrete in bridge columns is increasing due to many advantages of the high strength materials. In order to study the equivalent plastic hinge length of reinforced concrete bridge columns，37 column test results by using high strength reinforcement and high concrete were collected. Then, the equations proposed by Priestley, Paulay, Telemachos and JTG/T B02-01-2008 to predict the equivalent plastic hinge length of the columns were evaluated based on the experimental results. Influence factors which affect the equivalent plastic hinge lengt

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4

Fenollosa, Ernesto, Iván Cabrera, Verónica Llopis, and Adolfo Alonso. "Non-linear Analysis of Slender High Strength Concrete Column." Civil Engineering Journal 5, no. 7 (2019): 1440–51. http://dx.doi.org/10.28991/cej-2019-03091343.

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This article shows the influence of axial force eccentricity on high strength concrete columns design. The behavior of columns made of normal, middle and high strength concrete with slenderness values between 20 and 60 under an eccentric axial force has been studied. Structural analysis has been developed by means of software which considers both geometrical and mechanical non-linearity. The sequence of points defined by increasing values of axial force and bending moment produced by eccentricity has been represented on the cross-section interaction diagram until failure for each tested column

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5

Zhang, Shaohua, Xizhi Zhang, Shengbo Xu, and Xingqian Li. "Seismic behavior of normal-strength concrete-filled precast high-strength concrete centrifugal tube columns." Advances in Structural Engineering 23, no. 4 (2019): 614–29. http://dx.doi.org/10.1177/1369433219878855.

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This study reports the cyclic loading test results of normal-strength concrete-filled precast high-strength concrete centrifugal tube columns. Seven half-scale column specimens were tested under cyclic loads and axial compression loads to investigate their seismic behavior. The major parameters considered in the test included axial compression ratio, filled concrete strength, and volumetric stirrup ratio. The structural behavior of each specimen was investigated in terms of failure modes, hysteresis behavior, bearing capacity, dissipated energy, ductility, stiffness degradation, drift capacity

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6

Ali, A., Z. Soomro, S. Iqbal, N. Bhatti, and A. F. Abro. "Prediction of Corner Columns’ Load Capacity Using Composite Material Analogy." Engineering, Technology & Applied Science Research 8, no. 2 (2018): 2745–49. http://dx.doi.org/10.48084/etasr.1879.

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There are numerous reasons for which concrete has become the most widely used construction material in buildings, one of them being its availability in different types, such as fiber-reinforced, lightweight, high strength, conventional and self-compacting concrete. This advantage is specially realized in high-rise building construction, where common construction practice is to use concretes of different types or strength classes in slabs and columns. Columns in such structures are generally made from concrete which is higher in compressive strength than the one used in floors or slabs. This ra

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7

Li, Xiao Wei, Xue Wei Li, and Xin Yuan. "Seismic Performance of High Titanium Heavy Slag High Strength Concrete Columns." Applied Mechanics and Materials 174-177 (May 2012): 455–59. http://dx.doi.org/10.4028/www.scientific.net/amm.174-177.455.

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For expedite the development of high titanium heavy slag concrete, eight high titanium heavy slag high strength reinforced concrete (HTHS-HSRC) scale model column are studied. The eight HTHS-HSRC model columns are tested under reversed horizontal force. Primary experimental parameters include axial load ratio varying from 0.3 to 0.5, volumetric ratios of transverse reinforcement ranging from 1.38% to 1.56%, strength of high titanium heavy slag high strength concrete varying from 55.9 to 61.6 N/mm2 and configurations of transverse reinforcement. It is found from the test result that HTHS-HSRC m

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8

Qi, Yue. "Experimental Research on Bearing Capacity of Concrete Columns with High Strength Concrete Core under Axial Compression Loading." Advanced Materials Research 479-481 (February 2012): 2041–45. http://dx.doi.org/10.4028/www.scientific.net/amr.479-481.2041.

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Based on experimental research on plain concrete columns with high strength concrete core, the formula to predict the bearing capacity of concrete columns with high strength concrete core under axial compression loading was brought forward in previous paper, in order to verify the formula whether right, axial compression test including 3 concrete columns with high strength concrete core and 1 ordinary reinforced concrete column were completed, and the failure characteristic was analyzed additionally. According to experimental results, it can be shown that the failure modes of concrete columns

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9

Majeet, Anas Hameed, and Ahmad Jabar Hussain Alshamary. "The Performance of Self-Compacted High Strength Concrete Columns with Laced Steel Section." Civil Engineering Journal 4, no. 11 (2018): 2606. http://dx.doi.org/10.28991/cej-03091185.

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In view of the great orientation to the steel buildings and the large role played by the columns in carrying and transferring the loads it is necessary to go to strengthen the steel rolled columns to meet the requirements of the architecture that witch is looking for large spacing. In present paper this research the objectives of this research can be summarized as following: prevent local buckling occurs in columns, strengthen the steel columns from the weak axis in a new methodology, to compare buckling loads of single lacing reinforcement versus double lacing reinforcement and obtain a high

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10

Kleshchevnikova, Varvara, Ksenia Strelets, Svetlana Belyaeva, Olga Nikonova, Yulia Volkova, and Aleksandr Panfilov. "Dispersed reinforcement of columns of a high-rise building." E3S Web of Conferences 157 (2020): 06029. http://dx.doi.org/10.1051/e3sconf/202015706029.

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The article deals with the application of combined reinforcement of concrete with steel and basalt fibers. A model of a high-rise building was calculated in the LIRA-SAPR 2013 software. Design and characteristic strength of steel fiber and basalt fiber reinforced concretes to compression and tension and the initial elastic modulus were determined to calculate the model. Comparison of the effect of B40 concrete steel fiber reinforced concrete (SFRC) and basalt fiber reinforced concrete (BFRC) on column reinforcement was performed by comparing the required areas of reinforcement, as well as the

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11

Zhang, Jianwei, Deli Zhang, Xiangyu Li, and Zhaoxv Shen. "Experimental study on seismic performance of partially precast steel fiber high-strength concrete columns with high-strength steel bars." Advances in Structural Engineering 24, no. 12 (2021): 2841–53. http://dx.doi.org/10.1177/13694332211011551.

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To study the cyclic behavior of partially precast steel fiber high-strength concrete columns with high-strength steel bars, four full-sized square column specimens were fabricated and tested under constant axial load and horizontal cyclic load. The effects of the strength of precast concrete shell and the diameter of cast-in-place column core were analyzed in detail. The results show that partially precast steel fiber high-strength concrete columns have good seismic performance and deformation ability. Compared to the concrete column with lower strength of precast concrete shell, the concrete

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12

Zhang, Guo Jun, Xi Lin Lu, and Bo Quan Liu. "Study on Resilience Model of High-Strength Concrete Frame Columns." Advanced Materials Research 919-921 (April 2014): 969–72. http://dx.doi.org/10.4028/www.scientific.net/amr.919-921.969.

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Based on the horizontaldisplacements and loads of column at top end deduced according to sectionalbalanceable conditions at yield of high-strength frame columns, the lateralmaximum loads of column at top end calculated according to the Chinese currentconcrete code and involved regressive formulas, the resilience model ofhigh-strength concrete frame columns were established. The main results show:the resilience models of high-strength concrete frame columns proposed in thispaper consider influenced multi-facts and conveniently applied to engineering.

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13

Eid, Rami, Avi Cohen, Reuven Guma, Eliav Ifrach, Netanel Levi, and Avidor Zvi. "High-Strength Concrete Circular Columns with TRC-TSR Dual Internal Confinement." Buildings 9, no. 10 (2019): 218. http://dx.doi.org/10.3390/buildings9100218.

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The standard requirements for transverse steel reinforcement (TSR) confinement in reinforced-concrete (RC) columns are mainly to provide the following: ductile behavior, minimum axial load capacity of the column’s core, and prevention of longitudinal bars buckling. It is well-known that the passive confinement due the TSR action is less effective in high-strength concrete (HSC) compared to normal-strength concrete (NSC). Therefore, the TSR amounts required by the standards for HSC columns are high, and in some cases, especially in the lower stories columns of high-rise buildings, are impractic

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14

Deng, Mingke, and Yangxi Zhang. "Seismic Performance of High-Ductile Fiber-Reinforced Concrete Short Columns." Advances in Civil Engineering 2018 (2018): 1–11. http://dx.doi.org/10.1155/2018/3542496.

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This study mainly aims to investigate the effectiveness of high-ductile fiber-reinforced concrete (HDC) as a means to enhance the seismic performance of short columns. Six HDC short columns and one reinforced concrete (RC) short column were designed and tested under lateral cyclic loading. The influence of the material type (concrete or HDC), axial load, stirrup ratio, and shear span ratio on crack patterns, hysteresis behavior, shear strength, deformation capacity, energy dissipation, and stiffness degradation was presented and discussed, respectively. The test results show that the RC short

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15

Hou, Chongchi, Wenzhong Zheng, and Wei Chang. "BEHAVIOUR OF HIGH-STRENGTH CONCRETE CIRCULAR COLUMNS CONFINED BY HIGH-STRENGTH SPIRALS UNDER CONCENTRIC COMPRESSION." JOURNAL OF CIVIL ENGINEERING AND MANAGEMENT 26, no. 6 (2020): 564–78. http://dx.doi.org/10.3846/jcem.2020.12913.

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This paper tested the behaviour of 32 high-strength concrete columns confined by high-strength spirals under concentric compression. The test parameters included unconfined concrete compressive strength, spiral yield strength, volumetric ratio, and spiral spacing. The results showed that bulging and shear sliding were the two characteristic types of failure patterns of the thirty-two confined columns, depending on spiral spacing and concrete strength. Moreover, the spiral in most specimens did not yield at the confined concrete compressive strength. An analytical confinement model for high-str

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16

Rodsin, Kittipoom. "Ductility Enhancement of High Strength RC Columns Using Steel Fiber Reinforced Concrete (SFRC)." Advanced Materials Research 931-932 (May 2014): 463–67. http://dx.doi.org/10.4028/www.scientific.net/amr.931-932.463.

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The principal aim of this research is to improve the seismic performance of high strength concrete (HSC) reinforced columns using fiber reinforced concrete (FRC) by mixing steel fiber into the concrete. Two reinforced concrete columns 200mm x 300mm in cross-section with a height of 1250 mm were tested under cyclic lateral loading. The first specimen was casted using high strength concrete of 100 MPa and the second specimens were also casted using similar concrete strength but the steel fiber of 0.5% by volume was added to the concrete in the plastic hinge region. Both columns were subjected to

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17

Yang, Yong, Xing Du, Yunlong Yu, and Yongpu Pan. "Experimental study on the seismic performance of composite columns with an ultra-high-strength concrete-filled steel tube core." Advances in Structural Engineering 23, no. 4 (2019): 794–809. http://dx.doi.org/10.1177/1369433219879805.

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The ultra-high-strength concrete-encased concrete-filled steel tube column consists of a concrete-filled steel tube core and a rectangle-shaped reinforced concrete encasement. This article presents the seismic performance analysis of ultra-high-strength concrete-encased concrete-filled steel tube columns subjected to cyclic loading. Based on the measured load-lateral displacement hysteresis curves of six ultra-high-strength concrete-encased concrete-filled steel tube columns and two conventional RC columns, the seismic behaviours, such as the ductility, energy dissipation, stiffness and load-b

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18

Teng, Jin-Guang, Zihao Wang, Tao Yu, Yang Zhao, and Li-Juan Li. "Double-tube concrete columns with a high-strength internal steel tube: Concept and behaviour under axial compression." Advances in Structural Engineering 21, no. 10 (2018): 1585–94. http://dx.doi.org/10.1177/1369433217746838.

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This article presents a new form of fibre-reinforced polymer-concrete-steel hybrid columns and demonstrates some of its expected advantages using results from an experimental study. These columns consist of a concrete-filled fibre-reinforced polymer tube that is internally reinforced with a high-strength steel tube and are referred to as hybrid double-tube concrete columns. The three components in hybrid double-tube concrete columns (i.e. the external fibre-reinforced polymer tube, the concrete infill and the internal high-strength steel tube) are combined in an optimal manner to deliver excel

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19

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 col

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20

Fu, Guo. "The Research on Ultimate Displacement Angle of Concrete Columns with High-Strength Materials." Advanced Materials Research 742 (August 2013): 51–55. http://dx.doi.org/10.4028/www.scientific.net/amr.742.51.

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Not collapse under strong earthquake is an important goal of the seismic design of reinforced concrete structure, seismic collapse resistance performance is directly affected by the deformation behavior of reinforced concrete column. The application of high-strength steel, high-strength stirrup and high-strength concrete can enhance the concrete material properties and mechanical properties of reinforced concrete column, but their deformation behavior have large differences. The research on the seismic performance of columns with high-strength materials, especially its deformation behavior, be

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21

Li, Jun, and Chengqing Wu. "Damage evaluation of ultra-high performance concrete columns after blast loads." International Journal of Protective Structures 9, no. 1 (2018): 44–64. http://dx.doi.org/10.1177/2041419617743986.

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As emerging advanced construction material, ultra-high performance concretes have seen increasing field applications over the past two decades to take advantages of their ultra-high mechanical strength and durability; yet the systematic study on its dynamic behaviour under impact and blast loads is not commonly seen. This article presents an experimental and numerical study on the static and dynamic behaviour of an existing ultra-high performance concrete material. Experimental study on its flexural behaviour under static loads is conducted and an inverse study is carried out to derive its uni

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22

Kodur, VKR. "Performance of high strength concrete-filled steel columns exposed to fire." Canadian Journal of Civil Engineering 25, no. 6 (1998): 975–81. http://dx.doi.org/10.1139/l98-023.

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Results from an experimental program on the behaviour of high strength concrete-filled steel hollow structural section (HSS) columns will be presented for three types of concrete filling. A comparison will be made of the fire-resistance performance of HSS columns filled with normal strength concrete, high strength concrete, and steel-fibre-reinforced high strength concrete. The various factors that influence the structural behaviour of high strength concrete-filled HSS columns under fire conditions are discussed. It is demonstrated that, in many cases, addition of steel fibres into high streng

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23

Aryan, Hadi. "Seismic Resistant Bridge Columns with NiTi Shape Memory Alloy and Ultra-High-Performance Concrete." Infrastructures 5, no. 12 (2020): 105. http://dx.doi.org/10.3390/infrastructures5120105.

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Reinforced concrete bridge columns often endure significant damages during earthquakes due to the inherent deficiencies of conventional materials. Superior properties of the new materials such as shape memory alloy (SMA) and ultra-high-performance concrete (UHPC), compared to the reinforcing steel and the normal concrete, respectively, are needed to build a new generation of seismic resistant columns. Application of SMA or UHPC in columns has been separately studied, but this paper aims to combine the superelastic behavior of NiTi SMA and the high strength of UHPC, in order to produce a column

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24

Van, Kyung-Oh, Hyun-Do Yun, and Sun-Kyoung Hwang. "Effect of Confined High-Strength Concrete Columns." Journal of the Korea Concrete Institute 15, no. 5 (2003): 747–58. http://dx.doi.org/10.4334/jkci.2003.15.5.747.

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25

Lokuge, W. P., S. Setunge, and J. G. Sanjayan. "Modelling eccentrically loaded high-strength concrete columns." Magazine of Concrete Research 55, no. 4 (2003): 331–41. http://dx.doi.org/10.1680/macr.2003.55.4.331.

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26

Hwang, S. K., H. D. Yun, W. S. Park, and B. C. Han. "Seismic performance of high-strength concrete columns." Magazine of Concrete Research 57, no. 5 (2005): 247–60. http://dx.doi.org/10.1680/macr.2005.57.5.247.

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27

Hwang, S. K., H. D. Yun, W. S. Park, and B. C. Han. "Seismic performance of high-strength concrete columns." Magazine of Concrete Research 57, no. 5 (2005): 247–60. http://dx.doi.org/10.1680/macr.57.5.247.64287.

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28

Diniz, Sofia M. C., and Dan M. Frangopol. "Reliability Assessment of High-Strength Concrete Columns." Journal of Engineering Mechanics 124, no. 5 (1998): 529–36. http://dx.doi.org/10.1061/(asce)0733-9399(1998)124:5(529).

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29

Uy, Brian. "High Strength Steel-Concrete Composite Box Columns." IABSE Symposium Report 88, no. 3 (2004): 79–84. http://dx.doi.org/10.2749/222137804796302473.

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30

Diniz, Sofia M. C., and Dan M. Frangopol. "Reliability Bases for High-Strength Concrete Columns." Journal of Structural Engineering 123, no. 10 (1997): 1375–81. http://dx.doi.org/10.1061/(asce)0733-9445(1997)123:10(1375).

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31

Xiao, Yan, and Armen Martirossyan. "Seismic Performance of High-Strength Concrete Columns." Journal of Structural Engineering 124, no. 3 (1998): 241–51. http://dx.doi.org/10.1061/(asce)0733-9445(1998)124:3(241).

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32

Canbay, Erdem, Guney Ozcebe, and Ugur Ersoy. "High-Strength Concrete Columns under Eccentric Load." Journal of Structural Engineering 132, no. 7 (2006): 1052–60. http://dx.doi.org/10.1061/(asce)0733-9445(2006)132:7(1052).

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33

Wang, Qingxiang, Guofan Zhao, and Liyan Lin. "Ductility of high strength reinforced concrete columns." Nuclear Engineering and Design 156, no. 1-2 (1995): 75–81. http://dx.doi.org/10.1016/0029-5493(94)00936-s.

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34

Hadi, M. N. S., and J. Li. "External reinforcement of high strength concrete columns." Composite Structures 65, no. 3-4 (2004): 279–87. http://dx.doi.org/10.1016/j.compstruct.2003.11.003.

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Diniz, Sofia M. C., and Dan M. Frangopol. "Strength and Ductility Simulation of High-Strength Concrete Columns." Journal of Structural Engineering 123, no. 10 (1997): 1365–74. http://dx.doi.org/10.1061/(asce)0733-9445(1997)123:10(1365).

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36

Dundar, Cengiz, and Serkan Tokgoz. "Strength of biaxially loaded high strength reinforced concrete columns." Structural Engineering and Mechanics 44, no. 5 (2012): 649–61. http://dx.doi.org/10.12989/sem.2012.44.5.649.

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37

Mak, S. L., M. M. Attard, D. W. S. Ho, and P. LeP Darvall. "Cross-sectional strength gradients in high strength concrete columns." Cement and Concrete Research 24, no. 1 (1994): 139–49. http://dx.doi.org/10.1016/0008-8846(94)90095-7.

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38

Yoo, S. H., S. W. Shin, and I. K. Kim. "Optimum Dosage of PP Fiber for the Spalling Control of High Strength Reinforced Concrete Columns." Key Engineering Materials 348-349 (September 2007): 621–24. http://dx.doi.org/10.4028/www.scientific.net/kem.348-349.621.

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Spalling is defined as damages to concrete exposed to high temperature during fire, causing cracks and localized bursting of small pieces of concrete. As the concrete strength increases, the degree of damage caused by spalling becomes more serious due to impaired permeability. It has been reported that polypropylene(PP) fiber has an important role in protecting concrete from spalling, and the optimum dosage of PP fiber is 0.2%. However, this result was based on the fire test of non-reinforced concrete specimens. The high-temperature behavior of highstrength reinforced concrete columns with var

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39

Ding, Hui, Jian Ping Wang, and Li Song. "Numerical Test Research on High-Strength Concrete Square Columns with High-Strength Aseismic Transverse Reinforcement under Concentric Compression." Advanced Materials Research 1120-1121 (July 2015): 1475–79. http://dx.doi.org/10.4028/www.scientific.net/amr.1120-1121.1475.

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This paper focuses on the the relationship between strength and ductility of high-strength concrete (HSC) columns with high-strength aseismic transverse reinforcement under concentric compression and its influencing factors. Some confining models for HSC with high-strength aseismic transverse reinforcement are introduced. Based on 10 groups of high-strength aseismic stirrup confined high-strength concrete square columns are tested under concentric compression, the influence of stirrup in binding strength and the ductility of concrete columns on different stirrup strength, different volume rati

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40

Nair, Anjaly, and Osama (Sam) Salem. "Experimental determination of the residual compressive strength of concrete columns subjected to different fire durations and load ratios." Journal of Structural Fire Engineering 11, no. 4 (2020): 529–43. http://dx.doi.org/10.1108/jsfe-10-2019-0034.

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Purpose At elevated temperatures, concrete undergoes changes in its mechanical and thermal properties, which mainly cause degradation of strength and eventually may lead to the failure of the structure. Retrofitting is a desirable option to rehabilitate fire damaged concrete structures. However, to ensure safe reuse of fire-exposed buildings and to adopt proper retrofitting methods, it is essential to evaluate the residual load-bearing capacity of such fire-damaged reinforced concrete structures. The focus of the experimental study presented in this paper aims to investigate the fire performan

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41

Fang, Xiao Dan, Guan Xin Chen, Hong Wei, and Zheng Qin Yao. "Experimental Research on Steel Bar Reinforced High-Strength Concrete Columns." Advanced Materials Research 671-674 (March 2013): 454–60. http://dx.doi.org/10.4028/www.scientific.net/amr.671-674.454.

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4 steel bar reinforced high-strength concrete column specimens were tested under axial compression in order to study how different height width ratios, different stirrup ratios and different steel bar reinforcement ratios influence the failure mode of the members and the bearing capacity. Results show that the steel bar reinforced high-strength concrete columns are applicable to practical engineering.

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42

Alaee, Pooya, Yoshiharu Sato, and Bing Li. "Drift capacity of high-strength concrete columns with mixed-grade longitudinal reinforcements." Advances in Structural Engineering 22, no. 2 (2018): 519–34. http://dx.doi.org/10.1177/1369433218794270.

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A unique reinforced concrete column design method which aims to improve the ductile behavior of reinforced concrete columns by utilizing various steel grades for longitudinal reinforcements is evaluated in this article. Six large-scale reinforced concrete columns were tested, with the columns subjected to axial load and cyclic forces under reversed bending. The parameters varied in the test program including the axial loading level and the ratio and strength of longitudinal steel reinforcement. It was found from the test results that utilizing longitudinal high-strength steel reinforcement by

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43

Kim, Heung Youl, Hyung Jun Kim, Kyung Hoon Park, Bum Youn Cho, and Jae Sung Lee. "Fire Resistance Performance of High-Strength Concrete Columns Reinforced with Pre-Stressed Wire Ropes." Applied Mechanics and Materials 470 (December 2013): 880–83. http://dx.doi.org/10.4028/www.scientific.net/amm.470.880.

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In this study, the fire resistance performance of high-strength concrete columns was evaluated to see the influence of lateral confinement reinforcement with wire ropes for improving ductility, fire resistance reinforcement with fiber cocktail and load ratio. For this, loaded fire test was conducted under ISO834 standard fire condition. The axial ductility of the 60MPa high-strength concrete column reinforced with pre-stressed wire ropes was improved and its fire resistance performance was also improved by 23% compared with its counterpart without wire ropes. The appropriate load for the 60MPa

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44

Chen, Su Wen, Meng Yang, Zhao Xin Hou, Guo Qiang Li, and Qing Liu. "Experimental and Numerical Studies on Seismic Behavior of Q460 High Strength Steel Reinforced Concrete Column." Key Engineering Materials 763 (February 2018): 763–70. http://dx.doi.org/10.4028/www.scientific.net/kem.763.763.

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High strength steel reinforced concrete (HSRC) column refers to steel reinforced concrete column using high strength steel with its yield strength over 420MPa. So far, research on seismic behavior of HSRC columns is limited. This paper presents experimental and numerical studies on seismic behavior of HSRC columns. Two Q460 high strength steel reinforced concrete columns have been tested under low cyclic loading with constant axial compression ratio of 0.3. Flexural failure is observed in the test. From the hysteresis curves, the specimens exhibit good ductility and satisfactory energy dissipa

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Bukovská, Pavla, Marcela Karmazínová, and Michal Štrba. "Benefit of Ultra-High Strength Infill in Concrete-Filled Steel Tubular Columns." Key Engineering Materials 898 (August 27, 2021): 93–99. http://dx.doi.org/10.4028/www.scientific.net/kem.898.93.

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Concrete filled steel tubes (CFST) represent a composite building member suitable especially for the construction of columns of a skeleton frame. Filling the steel tube with concrete allows the use of suitable properties of both materials and their interaction. This is very beneficial in a fire exposure, where a circular column has slightly better fire resistance than a square column. In case of an assessment of columns at the ultimate limit state (ULS), a buckling resistance decides. In previous research, it was found that increasing the strength of concrete increases buckling resistance only

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Lu, Wen-Yao, and Ing-Juang Lin. "Failure Probability of Short High-Strength Concrete Tied Columns." Journal of Mechanics 19, no. 2 (2003): 299–309. http://dx.doi.org/10.1017/s1727719100004330.

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ABSTRACTThis paper aims to investigate the failure probability of short high-strength concrete tied columns using the Monte Carlo technique. The random variables considered in this study are the strength of concrete, the strength of steels, the cross-section dimensions, the location of the steel reinforcement, the variability of strength model and the loads. The results show that the failure probabilities of high-strength concrete columns designed according to the ACI Code are relatively high. The current ACI Code may not be conservative for design of short high-strength concrete tied columns.

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Paultre, Patrick, and Denis Mitchell. "Background to seismic design provisions in CSA A23.3–04 for high-strength concrete." Canadian Journal of Civil Engineering 36, no. 4 (2009): 565–79. http://dx.doi.org/10.1139/l08-110.

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This paper presents the background experimental and analytical research that was carried out to develop the provisions for the seismic design of high-strength concrete structures in the 2004 Canadian standard CSA A23.3–04. It is noted that the 1994 Canadian standard CSA A23.3–94 limited the concrete compressive strength to 55 MPa for the seismic design of nominally ductile and ductile structures, while the 1995 New Zealand Standard limited the concrete compressive strength to 70 MPa. In contrast, the 2008 American Concrete Institute (ACI) code ACI 318M has no upper limit on concrete strength,

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Jin, Liu, Zixing Ding, Dong Li, and Xiuli Du. "Experimental and numerical investigations on the size effect of moderate high-strength reinforced concrete columns under small-eccentric compression." International Journal of Damage Mechanics 27, no. 5 (2017): 657–85. http://dx.doi.org/10.1177/1056789517699054.

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The paper deals with an experimental investigation and numerical simulation of moderate high-strength reinforced concrete (RC) columns subjected to a small-eccentric compressive loading ( e0 = 0.25 h0). A series of tests on the behavior of 12 geometrically similar moderate high-strength reinforced concrete columns with two different stirrups ratios (i.e., 0% and 0.66%) were conducted. The maximum structural size of the square reinforced concrete columns was 800 mm. A 2D mesoscale method for the simulation of the behavior of reinforced concrete columns was established. The numerical tests on th

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Basset, R., and S. M. Uzumeri. "Effect of confinement on the behaviour of high-strength lightweight concrete columns." Canadian Journal of Civil Engineering 13, no. 6 (1986): 741–51. http://dx.doi.org/10.1139/l86-109.

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This paper summarizes an experimental investigation into the behaviour of high strength sand – lightweight concrete columns confined with rectangular ties. Fifteen reinforced and three unreinforced specimens were tested under monotonically increasing axial compression. Variables considered in this study were the longitudinal steel distribution and tie configuration, the tie steel spacing, the amount of tie steel, and the amount of longitudinal steel.The results indicated that unconfined high-strength lightweight aggregate concrete is a brittle material. The addition of lateral confining steel

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Martirossyan, Armen, and Yan Xiao. "Flexural-Shear Behavior of High-Strength Concrete Short Columns." Earthquake Spectra 17, no. 4 (2001): 679–95. http://dx.doi.org/10.1193/1.1423656.

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This paper discusses the seismic performance of high-strength concrete columns. The research is a part of an ongoing comprehensive experimental program to investigate seismic design methods of high-strength concrete structures. The first stage of the program involved testing of fifteen high-strength concrete stub columns under concentric axial compression. The concrete compressive strength was about 69 MPa (10,000 psi). In addition, a large database including eighty-six similar tests conducted by other researchers was constructed, and stress-strain behavior of high-strength concrete was invest

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