Behavior of innovative circular ice filled steel tubular stub columns under axial compression

Wang, Yanlei; Chen, Guipeng; Wan, Baolin; Lin, Huakuan; Zeng, Jin

doi:10.1016/j.conbuildmat.2018.03.208

Cited by 35 publications

(24 citation statements)

References 34 publications

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“…The volume expansion during ice formation would squeeze the voids of the hollow hoses. Therefore, the radical pressure during water freezing process would be significantly released, leading to a great decrease in the number of cracks in ice [5,43]. 3For sawdust-reinforced ice specimens, the sawdust was uniformly mixed with the water at the weight ratio of 14 (the sawdust) to 86 (the water) via mechanical stirrer.…”

Section: Preparation Of Specimensmentioning

confidence: 99%

“…The value of β was around 0.53 for PIFFT short columns and approximately linearly decreased with D/t a ratio for SIFFT short columns. The value of β was determined using Equation (5). Figure 20 shows the comparison of ultimate bearing capacities between predicted and experimental results.…”

Section: Ultimate Bearing Capacity Of Short Columnsmentioning

confidence: 99%

“…Ice belongs to a brittle material relatively strong under compression but very weak under tension, which is very similar to concrete [4]. However, the cylinder compressive of plain ice at −2 • C is less than 1/10 of that of normal concrete specimen with the same size [5]. Therefore, appropriate measures need to be taken to ameliorate the mechanical properties of plain ice.…”

Section: Introductionmentioning

confidence: 99%

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Compressive Behavior of Circular Sawdust-Reinforced Ice-Filled Flax FRP Tubular Short Columns

et al. 2020

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Sawdust-reinforced ice-filled flax fiber-reinforced polymer (FRP) tubular (SIFFT) columns are newly proposed to be used as structural components in cold areas. A SIFFT column is composed of an external flax FRP tube filled with sawdust-reinforced ice. The compressive behavior of circular SIFFT short columns was systematically investigated. Four types of short columns with circular sections, including three plain ice specimens, three sawdust-reinforced ice specimens (a mixture of 14% sawdust and 86% ice in weight), nine plain ice-filled flax FRP tubular (PIFFT) specimens and nine SIFFT specimens, were tested to assess the concept of the innovative composite columns. The test variables were the thickness of flax FRP tubes and the type of ice cores. The test results indicated that the lateral dilation and the development of cracks of the ice cores were effectively suppressed by outer flax FRP tubes, thus causing a considerable enhancement in the compressive strength. Moreover, the compressive behavior, energy-absorption capacity, and anti-melting property of sawdust-reinforced ice cores were better than those of plain ice cores confined by flax FRP tubes with the same thicknesses. The proposed equations for estimating ultimate bearing capacities of PIFFT and SIFFT short columns were shown to provide reasonable and accurate predictions.

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Section: Preparation Of Specimensmentioning

confidence: 99%

Section: Ultimate Bearing Capacity Of Short Columnsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Compressive Behavior of Circular Sawdust-Reinforced Ice-Filled Flax FRP Tubular Short Columns

et al. 2020

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“…This process is repeated by changing the value of e cf until equation (1) is satisfied. The bending moment can be then obtained by substituting the determined parameters into equation (2). As a result, for the beams failed by the fracture of CFRP, the theoretical estimates are compared with the experimental results in Table 2 and Figure 10, where the bending moment of the IHB-FRP-strengthened beam is calculated according to literature.…”

Section: Simplified Analytical Procedures Of the Load Capacitymentioning

confidence: 99%

“…This technique is achieved by bonding the fibrereinforced polymer (FRP) strips to the processed surface of concrete, thus the strengthening effect of the system is highly dependent on the interfacial behaviour between FRP and the substrate concrete. 1,2 Because of the relatively low strength of adhesives and concrete substrate, debonding might occur before full utilization of FRP strips when numerous plies of FRP are involved in strengthening systems. To this day, based on different inspection equipment, several non-destructive evaluation methods have been proposed to detect the interfacial defects within the adhesive layer for EB-FRP systems.…”

Section: Introductionmentioning

confidence: 99%

An approach of steel plate hybrid bonding technique to externally bonded fibre-reinforced polymer strengthening system

Zhang

Cheng

2018

International Journal of Distributed Sensor Networks

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The strengthening efficiency of externally bonded fibre-reinforced polymer to concrete structure is usually limited owing to the unexpected debonding of fibre-reinforced polymer laminates. In this study, a new steel plate hybrid bonding technique was developed to supply additional anchorage for traditional externally bonded fibre-reinforced polymer strengthening system. With this approach, the fibre-reinforced polymer debonding can be effectively prevented. Moreover, the stress concentration, which probably results in a premature fracture of fibre-reinforced polymer laminates as that performed for available hybrid bonding anchorage techniques, can be eliminated by introducing a steel plate between the mechanical fasteners and fibre-reinforced polymer strips. To verify the effect of this new method, 21 carbon fibrereinforced polymer-strengthened beams were studied on the flexural behaviours. Test results showed that, compared to available hybrid bonding anchorage techniques, steel plate hybrid bonding is more capable of making the full use of fibre-reinforced polymer laminates and further enhance the ultimate capacity and ductility of externally bonded fibrereinforced polymer-strengthened beams. Based on the experimental results, the effect of interfacial treatment, ply of carbon fibre-reinforced polymer and mechanical fastener spacing on the failure mode and ultimate load ratio were discussed. Eventually, a simplified analytical procedure was proposed and verified to estimate the flexural resistance of steel plate hybrid bonding -fibre-reinforced polymer-strengthened beam.

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Compressive Behavior of Circular Sawdust-Reinforced Ice-Filled Large Rupture Strain Fiber-Reinforced Polymer Tubular Short Columns

Wang¹,

Chen²,

Wan³

2021

Lecture Notes in Civil Engineering

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Behavior of innovative circular ice filled steel tubular stub columns under axial compression

Cited by 35 publications

References 34 publications

Compressive Behavior of Circular Sawdust-Reinforced Ice-Filled Flax FRP Tubular Short Columns

Compressive Behavior of Circular Sawdust-Reinforced Ice-Filled Flax FRP Tubular Short Columns

An approach of steel plate hybrid bonding technique to externally bonded fibre-reinforced polymer strengthening system

Compressive Behavior of Circular Sawdust-Reinforced Ice-Filled Large Rupture Strain Fiber-Reinforced Polymer Tubular Short Columns

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