Cantilevered RC Wall Subjected to Combined Static and Impact Actions

Yong, Arnold C.Y.; Lam, Nelson; Menegon, Scott J.; Gad, Emad

doi:10.1016/j.ijimpeng.2020.103596

Cited by 10 publications

(2 citation statements)

References 9 publications

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“…These structures are mainly safety barri-2021/4/50 ers built in stationary facilities and along vulnerable roadside territory. In previous five decades, the design of safety barriers was mainly based on deterministic specification of blast and impact loads and deterministic assessment of structural response to these loads [19,37,39,48]. However, a probabilistic design of safety barriers is a more natural and scientifically justified approach due to considerable uncertainties on the side of blast and impact loads.…”

Section: Review Of Related Work and Available Datamentioning

confidence: 99%

Bayesian Processing of Data on Bursts of Pressure Vessels

Vaidogas

2021

ITC

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Two alternative Bayesian approaches are proposed for the prediction of fragmentation of pressure vessels triggered off by accidental explosions (bursts) of these containment structures. It is shown how to carry out this prediction with post-mortem data on fragment numbers counted after past explosion accidents. Results of the prediction are estimates of probabilities of individual fragment numbers. These estimates are expressed by means of Bayesian prior or posterior distributions. It is demonstrated how to elicit the prior distributions from relatively scarce post-mortem data on vessel fragmentations. Specifically, it is suggested to develop priors with two Bayesian models known as compound Poisson-gamma and multinomial-Dirichlet probability distributions. The available data is used to specify non-informative prior for Poisson parameter that is subsequently transformed into priors of individual fragment number probabilities. Alternatively, the data is applied to a specification of Dirichlet concentration parameters. The latter priors directly express epistemic uncertainty in the fragment number probabilities. Example calculations presented in the study demonstrate that the suggested non-informative prior distributions are responsive to updates with scarce data on vessel explosions. It is shown that priors specified with Poisson-gamma and multinomial-Dirichlet models differ tangibly; however, this difference decreases with increasing amount of new data. For the sake of brevity and concreteness, the study was limited to fire induced vessel bursts known as boiling liquid expanding vapour explosions (BLEVEs).

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Section: Review Of Related Work and Available Datamentioning

confidence: 99%

Bayesian Processing of Data on Bursts of Pressure Vessels

Vaidogas

2021

ITC

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“…Yan et al [8] set slot steel connectors in shear walls to study the impact resistance of steel-concrete-steel composite shear walls; the results show that reducing the spacing of slot steel connectors could significantly reduce the deformation of the wall. Yong et al [9] studied the dynamic response of reinforced concrete walls under the megalithic impact and verified that the displacement-based model could accurately predict the deformation of the wall through the megalithic impact test. Wu studied the dynamic response of reinforced concrete slab-buffer layer composite structure under rockfall impact and analyzed the influence of different impact velocities and buffer layer thickness on the damage of reinforced concrete slab [10].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study and Numerical Analysis on Impact Resistance of Civil Air Defense Engineering Shear Wall

Shi

Zhang

et al. 2021

Advances in Civil Engineering

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In order to study the impact resistance of civil air defense engineering shear wall, the impact resistance of civil air defense engineering shear wall was studied by combining finite element numerical simulation with pendulum impact test. The effects of impact height, pendulum mass, and impact times on the impact resistance of civil air defense engineering shear walls were analyzed. It was shown that when the impact height increased from 0.4 m to 2.5 m, the failure mode of civil air defense engineering shear wall tended to be local impact failure, and the horizontal displacement in the middle of the wall span increased. The concrete crushing occurred in the impact area of the back of the civil air defense engineering shear wall. The increase in the impact height is a negative factor for the impact resistance of the civil air defense engineering shear wall. With the increase of pendulum weight, the number of concrete horizontal cracks in the back of the civil air defense engineering shear wall increased, while the number of vertical cracks decreased, but the impact surface was destroyed. Through multiple impact tests on the civil air defense engineering shear wall, the civil air defense engineering shear wall had accumulated damage. The longitudinally loaded steel on the back reached the ultimate strength, and there are large cracks at the bottom and even collapses. The increase of impact times has a great influence on the impact resistance of the civil air defense engineering shear wall. Through the analysis of the factors affecting the impact resistance of civil air defense engineering shear wall, it provides guidance for civil air defense engineering shear wall to resist impact load.

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