Behaviour and design method of short square tubed-steel-reinforced-concrete columns under eccentric loading

Wang, Xuanding; Liu, Jiepeng; Zhou, Xuhong

doi:10.1016/j.jcsr.2015.09.018

Cited by 49 publications

(6 citation statements)

References 16 publications

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“…Fiber-based numerical models for this kind of column were also established. Similar conclusions can be found in the studies of Wang et al [24,26]. Hence, the above researchers have confirmed that discontinuous steel tubes can effectively improve the ductility and bearing capacity of SRC columns.…”

Section: Introductionsupporting

confidence: 88%

“…Some experimental investigations have been performed on steel-tubed concrete columns. Wang et al [24] studied the behavior of slender circular tubed reinforced concrete columns under eccentric load and found that a discontinuous steel tube can improve the ductility of the structure. Qi et al [25] researched the behavior of tubed steel reinforced-concrete (SRC) stub columns under axial compression.…”

Section: Introductionmentioning

confidence: 99%

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Performance of Circular Concrete-Filled FRP-Grooved Steel Composite Tube Columns under Axial Compression

et al. 2021

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A new structure termed “concrete-filled FRP-grooved steel composite tube (CFGCT) column” is proposed, which is composed of a stress-released steel tube (i.e., grooved steel tube), fiber-reinforced polymer (FRP) and concrete. Axial load tests were carried out on twenty-four specimens to investigate the constraint effect of this structure. Three main experimental variables were considered: the steel tube thickness, the FRP type, and the FRP layer. The failure modes, stress-strain relationships and the effect of the main experimental variables were discussed. The stress-strain curves of this new structure are composed of an initial linear part, a nonlinear transition part, a strengthening part and a residual part. The test results demonstrate that the bearing capacity of the structure was improved, and that the mechanical mechanism of the structure was simplified due to the stress-released grooves. Based on the test results and previous studies, formulas for calculating the ultimate stress (fcu), ultimate strain (εcu), peak stress (fcc) and peak strain (εcc) were proposed. In addition, models for predicting the stress-strain curves of CFGCT columns were put forward, and the models could precisely simulate the stress-strain curve of this new composite structure. Hence, this study indicates that a structure composed of FRP and stress-released steel tube can effectively constrain concrete.

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Section: Introductionsupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Performance of Circular Concrete-Filled FRP-Grooved Steel Composite Tube Columns under Axial Compression

et al. 2021

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“…Results of this investigation demonstrated the potential for using a concrete-filled tube as a bridge girder [10]. In addition, there are a large number of research studies on the behavior of steel tube-confined concrete columns under eccentric compression, and also numerical modeling program was developed to study different characteristics of columns [11][12][13][14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Bearing Capacity Studies on Square Steel Tube Confined Steel Reinforced Concrete Column under Eccentric Load

Tong-feng¹

2020

Advances in Civil Engineering

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In the present study, an experimental research was conducted on square steel tube confined steel reinforced concrete column under eccentric load. The major parameters of the specimens included slenderness ratio, eccentricity ratio, and structural steel reinforced ratio. According to the tested results, the eccentricity ratio, from 0 to 0.55, significantly affects the structural bearing capacity. The slenderness ratio, from 3 to 8, and steel reinforced ratio, from 0.3 to 0.41, slightly affect the capacity. Furthermore, a numerical analysis program was developed, and the calculated results are well consistent with the experimental results. Also, the theoretical formula for eccentrically loaded columns was proposed based on numerical results.

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“…Steel‐concrete composite columns have possessed excellent load bearing capacity, stiffness, ductility as well as resistance to fire and corrosion 1–3 . The axial compressive behavior of composite columns under different welding methods for steel tubes 4,5 and the combination of new materials, such as steel and wood, 6 have become the research hotspot.…”

Section: Introductionmentioning

confidence: 99%

Experimental research on interfacial bonding performance of high‐strength steel pipe and surrounding concrete/grout for assembled composite columns

Zhu,

Wang

2023

Structural Concrete

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High‐strength steel pipe joints are proposed for assembled composite columns. The steel pipe extends into the upper and lower prefabricated columns and is anchored by poured concrete or grout to realize the connection of the prefabricated columns. Bonding performance of high‐strength steel pipe and surrounding concrete/grout is critical to the joint reliability. Steel pipe push‐out test was carried out, considering parameters of steel pipe section specification, bonding length, bonding material, and outer wall treatment of the steel pipe. Comparative analysis of measured load–displacement/slip curves and calculated bond strength were conducted. Bonding length of 600 mm could provide sufficient bond strength. Increasing bonding length could delay the slippage, but the bond strength decreased. High‐strength grout significantly increased the peak load size. The slenderness ratio and diameter–thickness ratio of the steel pipe had no obvious influence on the bonding performance. Steel pipe with D114*25 section obtained higher bonding strength with smaller ratio of bonding area to cross‐sectional area. Spiral ribs welded to the outer wall of the steel pipe could effectively improve the bonding strength and delay the interface slip. With easy construction and reliable performance, spiral ribs were recommended to be applied in prRactical projects.

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Behaviour and design method of short square tubed-steel-reinforced-concrete columns under eccentric loading

Cited by 49 publications

References 16 publications

Performance of Circular Concrete-Filled FRP-Grooved Steel Composite Tube Columns under Axial Compression

Performance of Circular Concrete-Filled FRP-Grooved Steel Composite Tube Columns under Axial Compression

Bearing Capacity Studies on Square Steel Tube Confined Steel Reinforced Concrete Column under Eccentric Load

Experimental research on interfacial bonding performance of high‐strength steel pipe and surrounding concrete/grout for assembled composite columns

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