Experimental Study on the Flexural Behavior of Concrete-Filled Steel Box Slabs

Lin, Yi; Zhong, Chongting; Song, Jiankai; Qu, Shuang

doi:10.3390/pr9040649

Cited by 4 publications

(2 citation statements)

References 13 publications

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“…The main input parameters are compressive strength and aggregate diameter. Concrete is coupled with steel bar that is made of Q235 low-carbon steel, with beam as the element property (Chen et al, 2021;Lin et al, 2021;Lu et al, 2021;Luo et al, 2021). The quadrilateral shell unit is adopted for the components of the W-beam guardrail.…”

Section: Design Of the Wing-wall-free Transition Guardrail And Numeri...mentioning

confidence: 99%

Research and Design of a Wing-Wall-Free Guardrail in Transition Between the Subgrade and the Bridge

Shen¹,

Hu²,

Wang³

2022

Front. Mater.

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Considering the difficulty and high cost of guardrail installation in the transition between the highway subgrade and the bridge, this paper proposes a wing-wall-free guardrail based on comprehensive research. It has carried out a performance analysis of material Q690 before proposing the scheme. It is found that this type of material has high yield strength and tensile strength as well as high plasticity. Accordingly, the guardrail structure of the transition section of the wing-wall-free guardrail is designed, and the DYNA numerical simulation is carried out to optimize the structure. Moreover, vehicle crash tests are used to verify the performance of the newly designed guardrail. The results of the above-mentioned research methods are as follows: the vehicle crash tests show that the wing-wall-free guardrail can reach a protection level of Grade SB, with a collision energy of 280 KJ. All performance indicators meet the industry standards. The guardrail can be used in the transition between W-beam subgrade guardrails and concrete or combined bridge barriers. This proposed guardrail is beautifully designed with low cost and great conveniency for installation and maintenance.

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Section: Design Of the Wing-wall-free Transition Guardrail And Numeri...mentioning

confidence: 99%

Research and Design of a Wing-Wall-Free Guardrail in Transition Between the Subgrade and the Bridge

Shen¹,

Hu²,

Wang³

2022

Front. Mater.

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“…Furthermore, for plates of the same material and with the same diameter, there was less variation among the extreme values of the burst pressure for thinner plates. Thinner plates have less flexural rigidity [42,43] and are less able to resist deformation. Additionally, they offer less resistance to forming, and their final structure more closely resembles the mould.…”

Section: Figure 13mentioning

confidence: 99%

Influence of Moulding Pressure on the Burst Pressure of Reverse-Acting Rupture Discs

Liu

Yuan

et al. 2021

Processes

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Rupture discs, also called bursting discs, are widely used in pressure vessels, pressure equipment, and pressure piping in process industries, such as nuclear power, fire protection, and petrochemical industries. To explore the relationship between the burst pressure of reverse-acting rupture discs and their production, two common manufacturing methods, air pressure moulding and hydraulic moulding, were compared in this study. Reverse-acting rupture discs that complied with the form recommended by API 520-2014 were prepared with four release diameters, and burst pressure tests were carried out. These results showed an obvious negative correlation between the forming pressure of rupture discs and their actual burst pressure for all experimental samples. Further study showed that the main reason for this correlation was a reduction in thickness at the top of the rupture disc caused by large plastic deformation during compression moulding. To explore the relationship between the thickness reduction effect and moulding method, this study defined the “relative ratio of thickness reduction” and concluded that the effect of decreasing the thickness of the rupture disc was more obvious for rupture disc substrates with less flexural rigidity. The above conclusions have important significance for guiding the control of the burst pressure of rupture discs.

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